Master Protocol to Assess the Safety and Recommended Phase 2 Dose of Next Generations of Autologous Enhanced NY-ESO-1/ LAGE-1a TCR Engineered T-cells, Alone or in Combination With Other Agents, in Participants With Advanced Tumors
Phase: PHASE1
Conditions: Neoplasms
Sponsor: Adaptimmune

Protocol Amendment 4
Study ID:  209012 Core
Official Title of Study: Master Protocol to Assess the Safety and Recommended 
Phase 2 Dose of Next Generations of Autologous Enhanced NY-ESO-1/ LAGE-1a TCR 
Engineered T-cells, Alone or in Combination With Other Agents, in Participants With 
Advanced Tumors
NCTID: NCT04526509
Date of Document: 27 May 2022

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
Gl a x o S mit h Kli n e gr o u p of c o m p a ni e s  
2 0 9 0 1 2  
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1  
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TI T L E P A G E  
Pr ot oc ol Title:  M aster Pr ot oc ol t o Assess t he Safet y a n d Rec o m me n de d P hase 2 D ose of 
Ne xt Ge nerati o n s of A ut ol o g o us E n ha n ce d  N Y -E S O -1/ L A G E -1 a T C R E n gi neere d  
T  cells, al o ne or i n c o m bi nati o n wit h ot her a ge nts, i n Partici pa nts  wit h A d va nce d T u m ors  
Pr ot oc ol N u m ber : 2 0 9 0 1 2/ A me n d me nt 0 4  
C o m p o u n d N u m ber: G S K 3 9 0 1 9 6 1, G S K 3 8 4 5 0 9 7, G S K 4 4 2 7 2 9 6  
S h ort Title : Master Pr ot oc ol of A ut ol o g o us E n h a nce d  T  Cells i n A d va nce d T u m ors  
S p o ns or N a me a n d Le g al Re gistere d A d dress: 
Gla x o S mit h Kli ne L L C  
5 Cresce nt Dri v e  
P hila del p hia, P A 1 9 1 1 2  
U S  
Me dic al M o nit or N a me a n d C o nt act I nf or m ati o n  ca n be f o u n d i n t he St u d y Refere n ce 
Ma n ual  
Cli nical De v el o p me nt Lea d 
O nc ol o g y , C ell a n d Ge ne T hera p y 
Gla x o S mit h Kli ne  
, B M B C h M A 
 
O nc ol o g y , C ell a n d Ge ne T hera p y 
Gla x o S mit h Kli ne   
Re g ul at or y A ge nc y I de ntif yi n g N u m ber(s):  
I N D N u m ber: 1 9 7 5 1  
E u dr a C T N u m ber : 2 0 1 9 -0 0 4 4 4 6 -1 4  
A p pr o v al D ate:  2 7 Ma y 2 0 2 2  
© 2 0 2 2  G S K gr o u p of c o m p a nies or its lice ns or . All ri g hts res er ve d. U na ut h orize d 
c o p yi n g or use of t his i nf or mati o n is pr o hi bite d
P P D
P P D
P P D

TMF-14682560 
CONFIDENTIAL 
 
209012 
 
Protocol Amd 04 
 
2 
Core 
 
PROTOCOL AMENDMENT SUMMARY OF CHANGES TABLE 
DOCUMENT HISTORY 
Document 
Date 
GSK Document Number  
Amendment 04 
27 May 2022 
 
TMF-14682560 
Amendment 03 
20 December 2021 
TMF-14357914 
Amendment 02 
04 November 2021 
TMF-14137790 
Amendment 01 
21 May 2021 
TMF-13779299 
Original Protocol 
02 December 2019 
2019N419717_00 
 
Amendment 04 – 27 May 2022 
 
Overall Rationale for Amendment 04: 
The primary reasons for Amendment 04 are as follows: 
• Changes to correct text inadvertently modified during the publication of 
Amendment 2. Edits in Amendment 04 reflect intended language 
• Updated eligibility criteria on prior therapies across indications to incorporate 
standard of care practice and Investigator’s discretion 
• Minor changes to Substudies 1, 2, and 3 to ensure alignment of design and 
procedures across the 3 substudies 
 
Section # and Name 
Description of Change 
Brief Rationale 
Core Section 
Throughout the protocol 
Made administrative changes and corrected 
clerical errors. Added mentions of MRCLS 
where missing. 
For clarity and consistency 
 
The designation number of the planned 
Long-term Follow-up Study (i.e., 208750) 
was added. 
Update information 
Section 5.2 – Participant 
Journey (Part 3) 
 
Section 9.10.1 – Tumor 
Biopsy 
If it is not feasible to obtain a fresh biopsy, 
an archival tumor biopsy (FFPE block) 
taken preferably after completion of the 
participant’s last line of therapy, preferably 
within 90 days prior to initiating 
lymphodepleting chemotherapy, may be 
accepted at the discretion of the Medical 
Monitor (or designee). 
Text edited to ensure clarity 

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S e cti o n # a n d N a m e  
D e s cri pti o n of C h a n g e  
Bri ef R ati o n al e  
S ecti o n 5. 2 –  P artici p a nt 
J o ur n ey ( P art 4) 
A s e nt e nc e w as a d d e d t o cl arify t h at t h e 
tr a nsf er of a ny i n divi d u al p artici p a nt t o t h e 
L o n g -T er m F oll o w -U p ( L T F U ) pr ot oc ol 
2 0 8 7 5 0 s h o ul d n ot exc e e d 6  m o nt hs of 
c o m pl eti n g t h e i nt erv e nti o n al p orti o n of a 
s u bst u dy. 
F or cl arity a n d t o ali g n t ext wit h 
Su bst u di es’ t ext  
S ecti o n 6. 3 –  
R escr e e ni n g/ Tr a nsf er  
M o difi e d s e nt e nc e t o i n dic at e t h at 
r escr e e ni n g f or a nti g e n ex pr essi on  m ay n ot 
b e r e q uir e d d e p e n di n g o n t h e t est 
pl atf or m(s) us e d a n d w h et h er t h ey m e et 
st u dy r e q uir e m e nts 
F or cl arity  
S ecti o n 9. 1. 8 –  M o nit ori n g 
f or I m m u n e Eff ect or C ell-
Ass oci at e d N e ur ot oxicity 
Sy n dr o m e  
a n d  
S ecti o n 1 2. 7. 8. 2 –  
M a n a g e m e nt of I m m u n e 
Eff ect or C ell -Ass oci at e d 
N e ur ot oxicity Sy n dr o m e 
(I C A N S) 
M o difi e d existi n g l a n g u a g e o n Br ai n M RI at 
b as eli n e t o cl arify t h at it s h o ul d b e o bt ai n e d  
a m o n g p artici p a nts wit h n o hist ory of C N S 
m est ast asis if m or e t h a n 3 m o nt hs h av e 
el a ps e d b et w e e n t h e l ast br ai n M RI a n d t h e 
st art of ly m p h o d e pl eti o n or if t h ey  s h o w 
n e ur ol o gic al sy m pt o ms c o nsist e nt wit h 
C N S m et ast asis . Br ai n M RI at b as eli n e 
s h o ul d b e o bt ai n e d f or all  p artici p a nts wit h 
a hist ory of br ai n m et ast asis . 
T o cl arify ass ess m e nt wi n d o w  a n d f or 
s af ety p ur p os es 
Ali g n e d t h e l a n g u a g e b et w e e n t h e t w o 
s ecti o ns 
F or c o nsist e ncy  
S ecti o n 9. 2. 1 - Ti m e P eri o d 
a n d Fr e q u e ncy f or 
C oll ecti n g A E a n d S A E 
I nf or m ati o n (i ncl u di n g 
Fi g ur e 4)  
T ext c o nc er ni n g t h e A E/ S A E c oll ecti o n 
p eri o ds w as m o difi e d t o diff er e nti at e 
b et w e e n t h e e n d of t h e i nt erv e nti o n al p h as e 
a n d t h e e n d of t h e st u dy, a n d f or cl arity 
p ur p os es.  
T ext e dit e d t o e ns ur e cl arity  
S ecti o n 9. 2. 7 –  A dv ers e 
Ev e nts of S p eci al I nt er est 
( A E SIs) 
S plit  existi n g A E SI of p a ncyt o p e ni a / a pl astic 
a n e mi a  i nt o 2 s e p ar at e A E SIs  t o av oi d 
c o nf usi o n 
T o  e ns ur e cl arity  
 
M o difi e d A E SI of p n e u m o nitis/ p n e u m o ni a 
t o acc ur at ely r efl ect i nt e nt t o c o m m u nic at e 
ev e nts of p n e u m o nitis, n ot p n e u m o ni a, as 
s o o n as s us p ect e d 
T o ali g n wit h A E SI i nt e nt  
 
A d d e d l a n g u a g e t o A E SI of I C A N S t o n ot e 
t h at ev e nts t h at ar e Gr a d e 3 or hi g h er 
s h o ul d b e r e p ort e d as S A E wit hi n 2 4 h o urs 
A d d e d l a n g u a g e t o A E SI of a pl astic a n e mi a  
t o n ot e all ev e nts of a pl astic a n e mi a  s h o ul d 
b e r e p ort e d as S A E wit hi n 2 4 h o urs  
T o ali g n wit h s af ety m o nit ori n g i nt e nt  
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TMF-14682560 
CONFIDENTIAL 
 
209012 
 
Protocol Amd 04 
 
4 
Core 
 
Section # and Name 
Description of Change 
Brief Rationale 
Section 9.3.1 – Evaluation 
of Anti-Cancer Activity 
Minor changes in language on acceptable 
imaging modalities for the study 
For clarity 
 
Added statement to clarify that confirmation 
of progression is only required in 
participants who are clinically stable after 
criteria for progression were first met 
For clarity and consistency with 
language in Substudies 1-3 
Section 9.10.1 
General Guidance on Biopsies: Added 
language on biopsy of single measurable 
lesions if non-target lesions are absent or 
not accessible 
Post T-Cell Infusion Biopsies: removed 
“non-target lesion” to align with change 
above 
For clarity 
Section 12.3.2 – Definition 
of SAE 
Added language to SAE definition to 
indicate that all events of aplastic anemia 
and Grade ≥3 events of ICANS or GVHD 
must be reported as SAEs within 24 hours 
To align with Section 9.2.7 
Section 12.3.5 – Reporting 
of SAE to GSK 
Added language to SAE reporting 
requirements to clarify that email 
notifications do not replace the need for the 
Investigator to complete and sign the SAE 
CRF pages 
For clarity 
Section 12.5 – Appendix 5 
– Genetics  
Deleted mention of stool sample 
Removed because sample is no 
longer collected, as of PA02 
Section 12.6.1 – RECIST 
v1.1 Assessment 
Guidelines 
Added definitions of target and non-target 
lesions 
For clarity 
Section 12.7.2.3 - 
Cytomegalovirus 
Added language to clarify that participants 
will be screened for CMV IgG seropositivity 
at baseline, following the Schedule of 
Activities 
For clarity 
 

TMF-14682560 
CONFIDENTIAL 
 
209012 
 
Protocol Amd 04 
 
5 
Core 
 
TABLE OF CONTENTS 
PAGE 
TITLE PAGE ................................................................................................................... 1 
1. 
SYNOPSIS ............................................................................................................. 11 
2. 
SCHEDULE OF ACTIVITIES (SOA) ....................................................................... 18 
3. 
INTRODUCTION .................................................................................................... 19 
3.1. 
Study Rationale .......................................................................................... 19 
3.2. 
Background ................................................................................................ 20 
3.2.1. 
Adoptive cell therapies and NY-ESO-1/LAGE-1a ......................... 20 
3.2.2. 
GSK3377794 (letetresgene autoleucel, lete-cel) .......................... 21 
3.2.3. 
Next Generation Engineering ....................................................... 22 
4. 
OBJECTIVES AND ENDPOINTS ........................................................................... 23 
5. 
STUDY DESIGN .................................................................................................... 24 
5.1. 
Overall Design ............................................................................................ 24 
5.1.1. 
Dose Confirmation Phase ............................................................ 25 
5.1.2. 
Dose Expansion Phase ................................................................ 25 
5.2. 
Participant Journey ..................................................................................... 25 
5.3. 
Number of Participants ............................................................................... 29 
5.4. 
Scientific Rationale for Protocol Design ...................................................... 29 
5.4.1. 
Data Monitoring Committee ......................................................... 29 
5.5. 
End of Study Definition ............................................................................... 30 
5.5.1. 
End of Study for Individual Participants ........................................ 30 
5.5.2. 
End of Master Protocol ................................................................ 30 
6. 
PROTOCOL POPULATION ................................................................................... 31 
6.1. 
Screen Failures........................................................................................... 31 
6.2. 
Screening under Other GSK Studies .......................................................... 31 
6.3. 
Rescreening/Transfer ................................................................................. 31 
7. 
STUDY INTERVENTION ........................................................................................ 33 
8. 
DISCONTINUATION OF STUDY INTERVENTION AND PARTICIPANT 
DISCONTINUATION/WITHDRAWAL ..................................................................... 34 
8.1. 
Discontinuation of Study Intervention .......................................................... 34 
8.1.1. 
Single Dose Administration .......................................................... 34 
8.1.2. 
Split Dose Administration ............................................................. 34 
8.2. 
Dose Limiting Toxicity ................................................................................. 35 
8.2.1. 
Liver Chemistry Stopping and Increased Monitoring 
Criteria ......................................................................................... 37 
8.2.1.1. 
Stopping Criteria ......................................................... 37 
8.2.1.2. 
Level 1 Monitoring ...................................................... 37 
8.2.1.3. 
Level 2 Monitoring ...................................................... 38 
8.2.1.4. 
Administration of Subsequent T Cell Dose(s) 
after Liver Stopping Criteria Met ................................. 39 
8.2.2. 
QTc Stopping Criteria .................................................................. 39 
8.2.3. 
Temporary Discontinuation .......................................................... 40 

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8. 3.  
P arti ci p a nt Di s c o nti n u ati o n/ Wit h dr a w al fr o m t h e St u d y  ............................... 4 0  
8. 4.  
L o st t o F oll o w U p  ........................................................................................ 4 1  
8. 5.  
St u d y St o p pi n g a n d P a u si n g R ul e s  ............................................................. 4 2  
9.  
S T U D Y A S S E S S M E N T S A N D P R O C E D U R E S  ..................................................... 4 3  
9. 1.  
S af et y A s s e s s m e nt s  ................................................................................... 4 3  
9. 1. 1.  
D o s e S el e cti o n C o m mitt e e  .......................................................... 4 3  
9. 1. 2.  
G S K S af et y R e vi e w T e a m  ........................................................... 4 4  
9. 1. 3.  
P h y si c al E x a mi n ati o n s  ................................................................. 4 4  
9. 1. 4.  
E C O G P erf or m a n c e St at u s  .......................................................... 4 4  
9. 1. 5.  
Vit al Si g n s  .................................................................................... 4 4  
9. 1. 6.  
C ar di a c A s s e s s m e nt s  .................................................................. 4 4  
9. 1. 7.  
P ul m o n ar y A s s e s s m e nt s  ............................................................. 4 5  
9. 1. 8.  
M o nit ori n g f or I m m u n e Eff e ct or C ell -A s s o ci at e d 
N e ur ot o xi cit y  S y n dr o m e  ............................................................... 4 6  
9. 1. 9.  
M o nit ori n g f or D e m y eli n ati n g N e ur o p at h y a n d  ot h er 
N e ur ol o gi c al E v e nt s  ..................................................................... 4 7  
9. 1. 1 0.  
Cli ni c al S af et y L a b or at or y A s s e s s m e nt s  ...................................... 4 7  
9. 2.  
A d v er s e E v e nt s a n d S eri o u s A d v er s e E v e nt s  ............................................. 5 0  
9. 2. 1.  
Ti m e P eri o d a n d Fr e q u e n c y f or C oll e cti n g A E a n d S A E 
I nf or m ati o n ................................................................................... 5 1  
9. 2. 2.  
M et h o d of D et e cti n g A E s a n d S A E s  ............................................. 5 2  
9. 2. 3.  
F oll o w -u p of A E s a n d S A E s  ......................................................... 5 3  
9. 2. 4.  
R e g ul at or y R e p orti n g R e q uir e m e nt s f or S A E s  ............................. 5 3  
9. 2. 5.  
C ar di o v a s c ul ar E v e nt s a n d D e at h  ................................................ 5 3  
9. 2. 6.  
Pr o gr e s si o n of U n d erl yi n g M ali g n a n c y  ......................................... 5 4  
9. 2. 7.  
A d v er s e E v e nt s of S p e ci al I nt er e st ( A E SI s)  ................................. 5 4  
9. 3.  
Effi c a c y A s s e s s m e nt s  ................................................................................. 5 5  
9. 3. 1.  
E v al u ati o n of A nti -C a n c er A cti vit y  ................................................ 5 5  
9. 3. 2.  
L o n g -T er m F oll o w -u p  ................................................................... 5 6  
9. 4.  
P ati e nt R e p ort e d O ut c o m e s  ........................................................................ 5 6  
9. 5.  
Tr e at m e nt of O v er d o s e  ............................................................................... 5 6  
9. 6.  
P h ar m a c o ki n eti c s  ....................................................................................... 5 7  
9. 7.  
P h ar m a c o d y n a mi c s  .................................................................................... 5 7  
9. 8.  
G e n eti c s  ..................................................................................................... 5 7  
9. 9.  
I m m u n o g e ni cit y A s s e s s m e nt s ..................................................................... 5 8  
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1 0.  S T A TI S TI C A L C O N SI D E R A TI O N S  ........................................................................ 6 4  
1 0. 1.  St ati sti c al H y p ot h e s e s ................................................................................. 6 4  
1 0. 2.  S a m pl e Si z e D et er mi n ati o n  ........................................................................ 6 4  
1 0. 3.  D at a A n al y si s C o n si d er ati o n s  ..................................................................... 6 4  
1 0. 4.  P o p ul ati o n s f or A n al y s e s  ............................................................................ 6 4  
1 0. 5.  St ati sti c al A n al y s e s  ..................................................................................... 6 5  
1 0. 5. 1.  
I nt eri m A n al y s e s .......................................................................... 6 5  
1 0. 5 . 2. 
K e y El e m e nt s of A n al y si s Pl a n  .................................................... 6 5  
1 0. 5. 2. 1.  S af et y A n al y s e s  .......................................................... 6 5  
1 0. 5. 2. 2.  Effi c a c y A n al y s e s  ....................................................... 6 6  
1 1.  R E F E R E N C E S  ....................................................................................................... 6 7  
1 2.  S U P P O R TI N G D O C U M E N T A TI O N A N D O P E R A TI O N A L  
C O N SI D E R A TI O N S  ............................................................................................... 7 1  
1 2. 1.  A p p e n di x 1: R e g ul at or y, Et hi c al, a n d St u d y O v er si g ht 
C o n si d er ati o n s  ............................................................................................ 7 1  
1 2. 1. 1.  
R e g ul at or y a n d Et hi c al C o n si d er ati o n s  ........................................ 7 1  
1 2. 1. 2.  
Fi n a n ci al Di s cl o s ur e  ..................................................................... 7 1  
1 2. 1. 3.  
I nf or m e d C o n s e nt Pr o c e s s .......................................................... 7 2  
1 2. 1. 4.  
D at a Pr ot e cti o n  ............................................................................ 7 2  
1 2. 1 . 5. 
Di s s e mi n ati o n of Cli ni c al St u d y D at a  ........................................... 7 3  
1 2. 1. 6.  
D at a Q u alit y A s s ur a n c e  ............................................................... 7 3  
1 2. 1. 7.  
S o ur c e D o c u m e nt s  ...................................................................... 7 4  
1 2. 1. 8.  
St u d y a n d Sit e Cl o s ur e  ................................................................ 7 4  
1 2. 1. 9.  
R e m ot e M o nit ori n g a n d S o ur c e D at a V erifi c ati o n  ......................... 7 5  
1 2. 2.  A p p e n di x  2: Cli ni c al L a b or at or y T e st s  ......................................................... 7 6  
1 2. 3.  A p p e n di x 3: A d v er s e E v e nt s: D efi niti o n s a n d Pr o c e d ur e s f or 
R e c or di n g, E v al u ati n g, F oll o w -u p, a n d R e p orti n g  ....................................... 7 8  
1 2. 3. 1.  
D efi niti o n of A E  ............................................................................ 7 8  
1 2. 3. 2.  
D efi niti o n  of S A E  .......................................................................... 7 9  
1 2. 3. 3.  
D efi niti o n of C ar di o v a s c ul ar E v e nt s  ............................................. 8 0  
1 2. 3. 4.  
R e c or di n g a n d F oll o w -U p of A E a n d S A E  .................................... 8 0  
1 2. 3. 5.  
R e p orti n g of S A E t o G S K  ............................................................. 8 2  
1 2. 4.  A p p e n di x 4: C o ntr a c e pti v e G ui d a n c e a n d C oll e cti o n of Pr e g n a n c y 
I nf or m ati o n .................................................................................................. 8 4  
1 2. 4. 1.  
D efi niti o n s  .................................................................................... 8 4  
1 2. 4. 2.  
C o ntr a c e pti o n G ui d a n c e  .............................................................. 8 5  
1 2. 4. 3.  
C oll e cti o n of Pr e g n a n c y I nf or m ati o n:  ........................................... 8 6  
1 2. 5.  A p p e n di x  5: G e n eti c s  .................................................................................. 8 8  
1 2. 5. 1.  
C o m p a ni o n Di a g n o sti c s  ............................................................... 8 8  
1 2. 6.  A p p e n di x 6: G ui d eli n e s f or A s s e s s m e nt of Di s e a s e, Di s e a s e 
Pr o gr e s si o n, a n d R e s p o n s e Crit eri a  ........................................................... 9 0  
1 2. 6. 1.  
R E CI S T v 1. 1 A s s e s s m e nt G ui d eli n e s  .......................................... 9 0  
1 2. 6. 2.  
i R E CI ST G ui d eli n e s  ..................................................................... 9 5  
1 2. 7.  A p p e n di x 7: S u p p orti v e C ar e G ui d a n c e  .................................................... 1 0 2  
1 2. 7. 1.  
T -C ell I nf u si o n S y m pt o m M a n a g e m e nt  ...................................... 1 0 2  
1 2. 7. 2.  
I nf e cti o n ..................................................................................... 1 0 2  
1 2. 7. 2. 1.  P n e u m o c y sti s c ari nii  P n e u m o ni a ( P C P)  ................... 1 0 3  
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1 2. 7. 2. 2.  H er p e s Si m pl e x, V ari c ell a Z o st er a n d E p st ei n 
B arr vir u s ( E B V)  ....................................................... 1 0 3  
1 2. 7. 2. 3.  C yt o m e g al o vir u s  ....................................................... 1 0 3  
1 2 . 7. 2. 4. H e p atiti s B Pr o p h yl a xi s  ............................................. 1 0 3  
1 2. 7. 2. 5.  S y p hili s  ..................................................................... 1 0 3  
1 2. 7. 2. 6.  Ot h er A nti -Mi cr o bi al Pr o p h yl a xi s  ............................... 1 0 4  
1 2. 7. 3.  
H e m at ol o gi c a n d Bl o o d Pr o d u ct S u p p ort  ................................... 1 0 4  
1 2. 7. 3. 1.  Irr a di at e d Bl o o d Pr o d u ct ........................................... 1 0 4  
1 2. 7. 3. 2.  C M V S cr e e n e d Bl o o d Pr o d u ct s  ................................ 1 0 4  
1 2. 7. 4.  
M a n a g e m e nt of A ut oi m m u nit y  ................................................... 1 0 5  
1 2. 7. 5.  
M a n a g e m e nt of C yt o ki n e R el e a s e S y n dr o m e  ............................ 1 0 5  
1 2. 7. 6.  
M a n a g e m e nt of Gr aft -v er s u s -H o st Di s e a s e ( G v H D)  .................. 1 0 8  
1 2. 7. 6. 1.  Di a g n o si s of G v H D  ................................................... 1 0 9  
1 2. 7. 6. 2.  Gr a di n g of G v H D  ...................................................... 1 1 0  
1 2. 7. 6. 3.  M a n a g e m e nt of G v H D  .............................................. 1 1 0  
1 2. 7. 7.  
M a n a g e m e nt of P a n c yt o p e ni a wit h B o n e M arr o w 
F ail ur e/ A pl a sti c A n e mi a  ............................................................. 1 1 2  
1 2. 7. 8.  
M a n a g e m e nt of I m m u n e Eff e ct or C ell -A s s o ci at e d 
N e ur ot o xi cit y S y n dr o m e (I C A N S)  ............................................... 1 1 3  
1 2. 7. 8. 1.  Gr a di n g of I C A N S  ..................................................... 1 1 3  
1 2. 7. 8. 2.  M o nit ori n g f or I m m u n e Eff e ct or C ell -A s s o ci at e d 
N e ur ot o xi cit y S y n dr o m e (I C A N S)  ............................. 1 1 5  
1 2. 7. 8. 3.  M a n a g e m e nt of I C A N S  ............................................. 1 1 5  
1 2. 7. 9.  
C h e m ot h er a p y S y m pt o m M a n a g e m e nt  ...................................... 1 1 7  
1 2. 7. 9. 1.  M a n a g e m e nt of N e utr o p e ni a  .................................... 1 1 7  
1 2. 7. 1 0.  M a n a g e m e nt of G uill a n -B arr é S y n dr o m e ( G B S)  ........................ 1 1 8  
1 2. 7. 1 0. 1.  N e ur ol o gi c al S y m pt o m s  ............................................ 1 1 9  
1 2. 7. 1 0. 2.  Bri g ht o n K e y Di a g n o sti c Crit eri a  ............................... 1 1 9  
1 2. 7. 1 0. 3.  Er a s m u s R e s pir at or y I n s uffi ci e n c y S c or e 
( E G RI S) .................................................................... 1 1 9  
1 2. 7. 1 0. 4.  M o difi e d Er a s m u s G B S O ut c o m e s S c or e 
( m E G O S) ................................................................. 1 1 9  
1 2. 7. 1 0. 5.  S u m m ar y of Di a g n o si s a n d Tr e at m e nt f or G B S  ........ 1 2 0  
1 2. 8.  A p p e n di x 8: N e ur ol o g y C o n s ult ati o n –  F urt h er G ui d eli n e s f or Si g n s 
a n d S y m pt o m s S u g g e sti v e of G uill ai n -B arr é S y n dr o m e  ............................ 1 2 1  
1 2. 8. 1.  
A d diti o n al A s s e s s m e nt s f or S u s p e ct e d G B S at H o s pit al 
A d mi s si o n  .................................................................................. 1 2 1  
1 2. 8. 1. 1.  Ri s k of R e s pir at or y I n s uffi ci e n c y A s s e s s m e nt  ........... 1 2 1  
1 2. 8. 1. 2.  Pr o g n o sti c T o ol f or A s s e s s m e nt of G B S 
O ut c o m e at H o s pit al A d mi s si o n  ................................ 1 2 2  
1 2. 8. 2.  
A s s e s s m e nt s P o st H o s pit al A d mi s si o n f or G B S  ......................... 1 2 2  
1 2. 8. 2. 1.  Bri g ht o n Crit eri a  ....................................................... 1 2 2  
1 2. 8. 2. 2.  Pr o g n o sti c T o ol f or A s s e s s m e nt of G B S 
1 2. 1 0.  A p p e n di x 1 0: m T PI -2 D e si g n Si m ul ati o n R e s ult s  ...................................... 1 2 5  
1 2. 1 1.  A p p e n di x 1 1: A b br e vi ati o n s a n d Tr a d e m ar k s  ............................................ 1 2 6  
1 2. 1 2.  A p p e n di x 1 2: Li st of S u b st u di e s  ................................................................ 1 3 2  
1 2. 1 3.  A p p e n di x 1 3: M a st er Pr ot o c ol D o c u m e nt Hi st or y  ...................................... 1 3 3  
1 3.  P R O T O C O L A M E N D M E N T H I S T O R Y ................................................................. 1 3 4  
C CI - T hi s s e cti o n c o nt ai n e d Cli ni c al O ut c o m e A s s e s s m e nt d at a c oll e cti o n q u e sti o n n air e s or i n di c e s, w hi c h ar e pr ot e ct e d 
b y t hir d p art y c o p yri g ht l a w s a n d t h er ef or e h a v e b e e n e x cl u d e d.

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13.1. 
Amendment 1 (21 May 2021) .................................................................... 134 
13.2. 
Amendment 2 (04 November 2021) .......................................................... 156 
13.3. 
Amendment 3 (20 December 2021) .......................................................... 160 
 
LIST OF TABLES 
PAGE 
Table 1 
Protocol-Required Safety Laboratory Assessments ............................... 77 
Table 2 
Time Periods for Contraception Usage ................................................... 86 
Table 3 
Evaluation of Overall Response for Participants with Measurable 
Disease at Baseline ............................................................................... 94 
Table 4 
Imaging and Treatment after First Radiologic Evidence of 
Progressive Disease ............................................................................ 100 
Table 5 
Management Guidelines for Cytokine Release Syndrome .................... 107 
Table 6 
Overview of Clinical Findings/Symptoms of GvHD ............................... 109 
Table 7 
Staging of Dermal, Gastrointestinal and Hepatic Involvement with 
Acute GvHD ......................................................................................... 110 
Table 8 
Grading of Acute GvHD ........................................................................ 110 
Table 9 
Management Guidelines for GvHD ....................................................... 111 
Table 10 
ICE-Encephalopathy Assessment Tool for Grading of ICANS .............. 114 
Table 11 
Grading of Immune Effector Cell-Associated Neurotoxicity 
Syndrome (ICANS) .............................................................................. 114 
Table 12 
Management of ICANS ........................................................................ 116 
Table 13 
Brighton Diagnostic Criteria .................................................................. 121 
Table 14 
Design Simulation Results ................................................................... 125 
 
LIST OF FIGURES 
PAGE 
Figure 1 
Participant Journey Schema................................................................... 17 
Figure 2 
Study Design .......................................................................................... 24 
Figure 3 
Patient Journey Schema ........................................................................ 25 
Figure 4 
 Time Period for Collecting AE and SAE Information .............................. 52 

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Figure 5 
Imaging and Treatment for Clinically Stable Participants after 
First Radiologic Evidence of PD Assessed by the Investigator ............. 101 
Figure 6 
Diagnosis and Treatment of Guillain-Barré Syndrome (GBS) ............... 120 
 

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1. 
SYNOPSIS 
Protocol Title: Master Protocol to Assess the Safety and Recommended Phase 2 Dose of 
Next Generations of Autologous Enhanced NYESO-1/ LAGE-1a TCR engineered 
T cells, alone or in combination with other agents, in Participants with Advanced Tumors  
Short Title: Master Protocol of Autologous Enhanced T Cells in Advanced Tumors  
Rationale:  
This master protocol will investigate a series of next generations of NY-ESO-1/LAGE-1a 
TCR engineered T cells that are efficacy enhanced using advances in technology, 
including (1) multi-component engineering (MCE, an approach in which more than one 
gene-product is introduced into T cells to modify the pharmacological activity of the 
engineered T cell), and/or (2) innovative ways of manufacturing for potentially fitter 
T cells.  These T cells may be evaluated alone or in combination with other agents.  
Adoptive T-cell therapy (ACT) is a therapeutic approach that uses autologous (cancer 
patient’s own) or allogeneic T lymphocytes obtained by leukapheresis, that are 
subsequently genetically engineered to express a tumor-targeting receptor, such as a 
T-cell receptor (TCR) or a chimeric antigen receptor (CAR), expanded in vitro and 
re-infused into the participant, with the aim of generating and propagating an anti-tumor 
T-cell immune response. 
NY-ESO-1 and LAGE-1a are members of the cancer-testis antigen (CTA) family of 
tumor-associated antigens.  These are cytoplasmic proteins detectable in multiple cancer 
types including synovial sarcoma (SS), myxoid/round cell liposarcoma (MRCLS), 
multiple myeloma, non-small cell lung cancer (NSCLC), bladder cancer, melanoma, 
gastric cancer, liver cancer, and many others.  Specific peptide epitopes of the NY-ESO-1 
or LAGE-1a protein are processed and presented on the surface of the tumor cell in 
complex with an HLA molecule, which can be recognized by T cells.  An HLA-A*02 
binding peptide (SLLMWITQC aa 157-165) that is common to both NY-ESO-1 and 
LAGE-1a antigens has been identified that can be recognized by NY-ESO-1 reactive 
T cells.   
GSK is currently developing an NY-ESO-1 TCR-T cell product (letetresgene autoleucel, 
lete-cel, GSK3377794, IND 14603 and IND 18944) that is one of the most advanced 
TCR-T engineered cell therapies in clinical trials for solid tumors.  The retained 
optimized TCR clone (called NY-ESO-1c259 or c259) used to manufacture GSK3377794 
targets the SLLMWITQC peptide bound to HLA-A*02.  As of 27 January 2021, 
125 patients covering six different NY-ESO-1 and/or LAGE-1a-positive malignancies 
have been treated with GSK3377794, with demonstration of a manageable safety profile 
and initial evidence of encouraging clinical activity in patients with metastatic synovial 
sarcoma (SS) and MRCLS. (Please refer to the most recent IB for up-to-date information 
regarding lete-cel).  Based on this early demonstration of positive risk-benefit in SS, the 
FDA has granted breakthrough designation and the EMA has granted PRIME status, thus, 
a pivotal trial (study 208467) has been initiated with GSK3377794 (lete-cel) in SS and 
MRCLS.  Other studies are ongoing, with early observations of clinical activity in other 
tumor types. 

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Despite the encouraging clinical activity of this first generation TCR-T, there is a need to 
further improve the activity and duration of response, as a proportion of patients 
receiving GSK3377794 (lete-cel) do not respond to treatment, and some of the patients 
that initially show tumor responses eventually relapse with their disease.  There are 
several proposed mechanisms for these observations, including the immunosuppressive 
tumor microenvironment (TME) and limited functional activity of CD4+ T cells within 
the T-cell product.  In order to further improve upon the clinical response rate and 
durability of response, next generations of engineered T-cell products are being 
developed that use the same affinity-enhanced TCR and in addition use (1) 
multi-component engineering (MCE) to incorporate within the lentiviral vector construct 
additional genes encoding molecules expected to enhance T-cell function and survival 
and/or (2) innovative ways of manufacturing for potentially fitter T cells.  
Study 209012 is a master protocol to assess the initial safety, tolerability, and 
recommended Phase 2 dose (RP2D) of such next-generations of NY-ESO-1 and 
LAGE-1a specific T cells, alone or in combination with other anticancer agents, in 
HLA-A*02 positive participants with NY-ESO-1 and/or LAGE-1a positive advanced 
tumors.  
Objectives and Endpoints: 
In general, the objectives and endpoints below will apply to all substudies unless 
otherwise specified.  Discrepancies between those stated here and those in the substudies 
will not require amendment and those stated in the substudies will apply.  
Exploratory objectives and endpoints, if any, will be provided in the substudy specific 
sections.  

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Objectives 
Endpoints 
Primary 
To assess the safety, tolerability, and determine 
recommended phase 2 dose (RP2D) of 
NY-ESO-1 and LAGE-1a specific T cells, alone 
or in combination with other agents, in HLA-A*02 
positive participants with NY-ESO-1 and/or 
LAGE-1a positive advanced tumors 
• Frequency of dose-limiting toxicities 
(DLTs)  
• Frequency and severity of adverse events 
(AEs), serious adverse events (SAEs) 
and AEs of special interest (AESI; as 
defined in the core protocol) 
Secondary - Efficacy 
To investigate the efficacy NY-ESO-1 and 
LAGE-1a specific T cells, alone or in 
combination with other agents, in HLA-A*02 
positive participants with NY-ESO-1 and/or 
LAGE-1a positive advanced tumors 
• Overall Response Rate (ORR) 
(investigator assessed according to 
RECIST v1.1) 
• Duration of Response (DoR) 
Secondary - Pharmacokinetics 
To characterize in vivo cellular PK profile (levels, 
expansion, persistence) of NY-ESO-1 and 
LAGE-1a specific T cells, alone or in 
combination with other agents, over time 
• Maximum transgene expansion (Cmax) 
• Time to Cmax (Tmax) 
• Area under the time curve from zero to 
time t AUC(0-t), as data permit 
AE = adverse event; AESI = AE of special interest; DLTs = dose-limiting toxicities; DoR = duration of response; 
HLA = human leukocyte antigen;  NY-ESO-1 = New York esophageal antigen-1; ORR = overall response rate; 
RECIST = Response Evaluation Criteria in Solid Tumors; RP2D = recommended phase 2 dose; SAE = serious AE. 
Overall Design:  
This is a master protocol investigating the safety, tolerability, RP2D and early efficacy of 
autologous, next-generation, NY-ESO-1 and LAGE-1a specific T cells, alone or in 
combination with other agents, in HLA-A*02 positive participants with NY-ESO-1 
and/or LAGE-1a positive advanced tumors.  
This protocol consists of a core protocol with multiple independent substudies.  For 
further details outlining each substudy, please refer to the List of Substudies in 
Section 12.12. 
The protocol may be amended at a later time to add additional substudies to investigate 
other NY-ESO-1 and/or LAGE-1a positive tumor types and other NY-ESO-1 and 
LAGE-1a specific T cells, potentially in combination with other agents.  Details of 
treatment will be provided in the substudy specific sections. 
Unless otherwise specified in a substudy-specific section, participants will receive 
NY-ESO-1 and LAGE-1a specific T cells after Screening, fulfilling eligibility criteria and 
completing lymphodepleting chemotherapy. 

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Study Schema  
 
 
NOTE:  Schema will not be updated for any additional substudies - please refer to Core Section 12.12 for 
the complete list of substudies. Participants with LAGE-1a positive tumors will be eligible if identified 
under a designated central laboratory test when available. 
 
Disclosure Statement: This is an open-label treatment master protocol with no masking.  
Number of Participants: 
This is a master protocol consisting of multiple substudies, the overall sample size is not 
fixed.  For details regarding planned participant numbers for each substudy, as well as for 
an up-to-date projected overall sample size, please refer to the List of Substudies in 
Section 12.12.  
Any further expansion of the substudies or additional substudies will be added by 
amendment subject to regulatory review.  
Sample size for each substudy will be documented in the substudy specific sections. 
Methodology and Study Duration: 
Each substudy in this Master Protocol will consist of two phases: Dose Confirmation 
Phase and Dose Expansion Phase.   
Dose Confirmation Phase 
In this phase, each next-generation NY-ESO-1/LAGE-1a specific T-cell product will be 
evaluated to assess/confirm the RP2D to be used in further clinical investigations. 
Dose Expansion Phase 
After RP2D has been determined for a given T-cell product, the dose expansion phase 
will begin.  In this phase, additional participants will be enrolled as necessary to meet the 
substudy requirements for the number of evaluable participants treated at the RP2D. Each 
     
     
       
        
                 
                
                      
                      
     
                    
                
          
Substudy 1:  GSK3901961 [CD8α_NY-ESO-1(c259)T]
in previously treated HLA-A*02 positive participants with 
• NY-ESO-1/LAGE-1a positive metastatic NSCLC  (Cohort 1)
• NY-ESO-1/LAGE-1a positive metastatic or unresectable 
SS/MRCLS (Cohort 2)
                38  09  [       _NY     1    9   
                                                          
•                                                      
        
Potential additional substudies:  
Next generations enhanced NY-ESO-1 specific T cells, alone 
or in combination with other agents, in NY-ESO-1/LAGE-1a 
positive advanced tumors 

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substudy will define the maximal number of participants for this phase in the substudy 
specific section. 
If supported by safety and efficacy results, additional participants may be enrolled to 
confirm the safety and efficacy in further cohort expansions via a protocol amendment. 
Additional details will be provided in each substudy specific section. 
Participant Journey 
For each individual participant, the study will consist of the following (see Figure 1 
Participant Journey schema below):  
Part 1: Screening 
1) Target expression Screening for tumor expression of NY-ESO-1 and/or 
LAGE-1a. For further details regarding HLA testing, please refer to the specific 
substudies.  
Note: Participants screened or enrolled in other GSK studies may be considered 
for enrollment to this study, where it is IRB/IEC approved, on a case-by-case 
scenario following risk/benefit evaluation between the Investigator and Sponsor 
Medical Monitor (or designee).  
Where a participant was previously tested for HLA positivity and/or 
NY-ESO-1/LAGE-1a expression under a different GSK-sponsored protocol, 
retesting of HLA and/or NY-ESO-1/LAGE-1a for 209012 may not be required 
dependent on the test platform(s) used and whether they meet the 209012 protocol 
and substudy requirements. If the 209012 requirements are not met, repeat testing 
may be required and may or may not require new sample collection. 
2) Leukapheresis eligibility screening phase to determine eligibility for undergoing 
leukapheresis beginning up to 28 days prior to leukapheresis. 
Part 2: Leukapheresis/Manufacture 
3) Leukapheresis procedure  
Note: leukapheresis may have been performed under another GSK-sponsored 
protocol or substudy of this protocol.  
Part 3: Lymphodepletion/Treatment 
4) Treatment fitness assessment and eligibility confirmation 
5) Interventional phase including Lymphodepletion from Days -7 to -4, TCR 
engineered T-cell infusion on Day 1, and follow-up as defined in each specific 
substudy.  
Note: TCR engineered T cells may have been manufactured under another 
GSK-sponsored protocol or substudy of this protocol. 
Part 4: Long-Term Follow-Up (LTFU) 
6) Long-term follow-up phase for up to 15 years from the date of TCR engineered 
T-cell infusion.  

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Following Screening (Target Expression Screening and Leukapheresis Eligibility 
Screening), participants who meet substudy entry criteria will be eligible to the study. 
Eligible participants will undergo Leukapheresis to collect autologous T cells; these will 
undergo MCE transduction to manufacture the IP, as specified in each substudy specific 
section.  The successful initiation of leukapheresis procedure constitutes enrollment to the 
study. 
In order to maximize patient benefit, participants who have failed screening or withdrawn 
before T-cell infusion, may rescreen in the same substudy or be screened for another 
substudy.  
Interventional Phase (Lymphodepletion/Treatment) 
Once the T-cell product has been successfully manufactured, released, and is available 
for infusion at the site, and once participant’s fitness for lymphodepletion has been 
assessed and additional eligibility criteria for treatment are met, participants will receive 
lymphodepleting chemotherapy as specified within each substudy specific section.  
Lymphodepleting chemotherapy may be given as outpatient treatment per institutional 
guidelines. 
Participants will receive growth factor support with G-CSF from ~24 hours following 
lymphodepleting chemotherapy until neutrophil count recovery in accordance with 
ASCO guidelines [Smith, 2015] or institutional practice.   
The IP will be administered as a single intravenous (IV) infusion on Day 1, unless 
otherwise indicated in a substudy specific section.  Information on T-cell infusion, 
hospitalization, and follow-up guidelines is provided in the substudy specific sections.   
After NY-ESO-1-specific T-cell infusion, participants are followed in the interventional 
portion of a given substudy until confirmed disease progression or for a minimal duration 
defined in each substudy specific section, at which time the participants enter the 
long-term follow up phase.   
Long-Term Follow-Up  
Upon completing the interventional portion of a given substudy, but no sooner than 90 
days post T-cell infusion, participants will be entered into a separate long-term follow-up 
(LTFU) protocol (GSK study 208750), where they will be followed for up to 15 years 
after T-cell infusion for gene therapy related adverse events per health authority 
guidance.  If LTFU protocol is not yet available at the particular clinical site, participants 
can be followed per LTFU schedules in substudy specific sections until LTFU protocol 
becomes available. 

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Figure 1 
Participant Journey Schema 
 
 
Data Monitoring Committee: 
A dose selection committee (DSC) will be in place to periodically evaluate safety of the 
dose levels and to make dose level (de/re)-escalation decisions.   The DSC will include 
participating investigators as well as GSK representatives from functional groups 
including safety, clinical, statistics and may also include external experts that are not 
involved in the study.  Additional details on the DSC will be presented in the substudy 
specific sections. 

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2. 
SCHEDULE OF ACTIVITIES (SOA) 
The SOA will be documented in each substudy specific section. 

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3. 
INTRODUCTION 
This is a master protocol investigating the safety, tolerability, recommended Phase 2 dose 
(RP2D) and early efficacy of enhanced autologous NY-ESO-1 and LAGE-1a specific 
T cells, alone or in combination with other agents, in HLA-A*02 positive participants 
with NY-ESO-1 and/or LAGE-1a positive advanced tumors.  This master protocol 
consists of a core protocol with multiple substudies. 
The protocol will initially include two monotherapy substudies as described in the Study 
Design (Section 5). Please refer to Section 12.12 for details outlining any additional 
substudies. 
The protocol may be amended at a later time to add additional substudies to investigate 
other NY-ESO-1 and/or LAGE-1a positive tumor types and other enhanced autologous 
NY-ESO-1 and LAGE-1a specific T cells, as monotherapy or in in combination with 
other anticancer agents.   
3.1. 
Study Rationale 
Adoptive T-cell therapy (ACT) is a therapeutic approach that uses autologous (cancer 
patient’s own) or allogeneic (donor’s own) T lymphocytes obtained by leukapheresis, that 
are subsequently genetically engineered to express a tumor-targeting receptor, such as a 
T-cell receptor (TCR) or a chimeric antigen receptor (CAR), expanded in vitro and 
re-infused into the participant, with the aim of generating and propagating an anti-tumor 
T-cell immune response.  
NY-ESO-1 and LAGE-1a are members of the cancer-testis antigen (CTA) family of 
tumor-associated antigens.  These are cytoplasmic proteins detectable in multiple cancer 
types including non-small cell lung cancer (NSCLC), bladder cancer, melanoma, liver 
cancer, synovial sarcoma (SS), myxoid/round cell liposarcoma (MRCLS), multiple 
myeloma and many others. Specific peptide epitopes of the NY-ESO-1 or LAGE-1a 
protein are processed and presented on the surface of the tumor cell in complex with an 
HLA molecule, which can be recognized by T cells.  An HLA-A*02 binding peptide 
(SLLMWITQC aa 157-165) that is common to both NY-ESO-1 and LAGE-1a antigens 
has been identified that can be recognized by NY-ESO-1 reactive T cells.   
GSK3377794 (lete-cel) T-cell product consists of autologous T cells transduced with a 
self-inactivating lentiviral vector encoding an affinity-enhanced TCR (c259) targeting the 
SLLMWITQC peptide bound to HLA-A*02.  In previous clinical trials using 
GSK3377794 (lete-cel), objective responses have been observed in 40 to 60% of treated 
participants who are HLA-A*02 positive and have NY-ESO-1+ SS [Robbins, 2011; 
Robbins, 2015; D’Angelo, 2018a].  Similar or higher response rates have been observed 
with this treatment in metastatic melanoma [Robbins, 2011], and multiple myeloma post 
autologous stem cell transplant (ASCT) [Rapoport, 2009].  GSK3377794 (lete-cel) is 
currently being investigated in ongoing GlaxoSmithKline (GSK) sponsored pilot clinical 
trials in HLA-A*02 positive participants with multiple types of tumors that are 
NY-ESO-1 and/or LAGE-1a positive.  A summary of the clinical data obtained to date 

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with GSK3377794 (lete-cel) is presented in the Benefit/Risk Assessment Sections of the 
substudy specific sections.   
Despite this encouraging clinical activity, not all patients receiving GSK3377794 
(lete-cel) or other ACTs have experienced a clinical benefit. Additionally, some patients 
who achieved responses have eventually relapsed with their disease [Error! Reference s
ource not found., 2018b].  The likely mechanisms for the limited efficacy observed in 
some patients include the immunosuppressive effects of the tumor microenvironment 
(TME; e.g. by secretion of cytokines that suppress T-cell activity [Anderson, 2017]) or 
limited CD4+ T-cell activation, thereby limiting the persistence of infused T cells and 
cytotoxic activity [D'Angelo, 2018b].  Furthermore, in tumors with limited expression of 
the targeted antigen, the efficacy is predicted to be lower.  Therefore, next generations of 
engineered T-cell products are being developed that use the same affinity-enhanced TCR 
and in addition use (1) multi-component engineering (MCE) to incorporate within the 
lentiviral vector construct additional genes encoding molecules expected to enhance 
T-cell function and survival and/or (2) innovative ways of manufacturing for potentially 
fitter T cells.  
In this protocol, we will investigate such autologous T cells that have been genetically 
engineered to (a) encode the same affinity-enhanced TCR (c259) as GSK3377794 
(lete-cel), and thus recognize with high affinity NY-ESO-1 and LAGE-1a tumor antigens, 
and at the same time (b) co-express molecules that should enhance T-cell function and 
survival and/or use other innovative ways of manufacturing for potentially fitter T cells.  
The aim of these studies will be to develop engineered T-cell products that will allow to 
further enhance clinical responses, with a goal to achieve long-term remissions of cancer.  
Given the encouraging early clinical activity of GSK3377794 (lete-cel), and in 
consideration of additional potential advantages provided by MCE, a clinical 
investigation of the next-generation products is justified to achieve maximum efficacy 
across NY-ESO-1 and /or LAGE-1a expressing tumors.   
3.2. 
Background 
3.2.1. 
Adoptive cell therapies and NY-ESO-1/LAGE-1a 
Genetic modification of autologous T cells targeting specific tumor antigens has been 
developed to overcome immune tolerance and to empower the immune system of the 
cancer patient with lasting anti-tumor immunity permitting long term remission of 
disease.  The TCR approach to engineered T-cell therapy is attractive because TCRs can 
recognize not only cell surface proteins (as is the case with CAR T cells) but also any 
intracellular proteins, since TCRs recognize peptide fragments of these intracellular 
proteins that are processed and presented on the cell surface in the context of HLA. The 
TCR-modified T-cell approach is also particularly suited for solid tumors due to their 
ability to recognize low concentrations of these intracellular cognate antigens.  In 
addition, the TCR approach mimics the natural function of the T cell by recruiting the 
endogenous signalling molecules and adhering to correct spatial orientation between the 
T cell and its target.  These aspects may contribute to a manageable safety profile, high 
anti-tumor activity and enhanced persistence of the infused TCR engineered T cells, 
providing ongoing anti-cancer protection.  

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Morgan et al. first demonstrated tumor regression in 2 of 17 patients after adoptive 
transfer of genetically engineered T cells expressing a TCR specific for a 
melanocyte-differentiating antigen (MART-1) [Morgan, 2006].  Responding patients 
demonstrated long term persistence of infused T cells. Identification and sequencing of 
TCRs able to recognize epitopes expressed by human tumors together with improvements 
in TCR gene transfer technology has allowed for rapid redirection of T cells and targeting 
of a variety of tumor antigens, including gp100, carcinoembryonic antigen (CEA) 
[Johnson, 2009], p53 [Kuball, 2005], cancer testis antigen (CTA) family members such 
as NY-ESO-1 [Robbins, 2011] as well as melanoma associated antigens (MAGE)-A3 
[Morgan, 2013], MAGE-A4 [Kageyama, 2015] and MAGE-A10 [Border, 2018]. 
Studies conducted by the NCI Surgery Branch have demonstrated that adoptive 
immunotherapy using T cells genetically engineered to recognize NY-ESO-1 following 
lymphodepletion led to objective antitumor responses in 4 of 6 patients (67%) [Robbins, 
2011] and 11 of 18 patients (61%) [Robbins, 2015] with SS. The estimated overall 3- and 
5-year survival rates for patients with SS were 38% and 14%, respectively [Robbins, 
2015]. No toxicity attributed to the modified cells was reported in these studies. 
Most clinical protocols with TCR gene therapy have incorporated preconditioning of the 
patient with a lymphodepleting chemotherapy regimen prior to T-cell infusion [Rohaan, 
2019].  Lymphodepletion prior to ACT may enhance immune reconstitution by the 
transferred cells and increase tumor-specific responses. Immune reconstitution is 
enhanced through homeostatic mechanisms that facilitate expansion of T lymphocytes 
[Baccala, 2005], facilitate trafficking of the engineered T cells [Pinthus, 2004], and also 
improve the persistence of infused T cells. Lymphodepletion can also enhance the 
activity of the adoptively transferred cells via the removal of inhibitory factors such as 
regulatory T cells [Wolf, 2003] and can activate antigen presenting cells through release 
of inflammatory cytokines and induction of tumor apoptosis with resulting cross 
presentation of tumor antigens to T cells.  Therefore, a lymphodepleting regimen 
containing cyclophosphamide and fludarabine will be used in this study; details will be 
provided in the substudy specific sections. 
GSK is currently developing a therapy consisting of autologous CD4+ and CD8+ T cells 
expressing the affinity-enhanced NY-ESO-1c259 TCR (GSK3377794, lete-cel), that is 
capable of recognizing the SLLMWITQC peptide, which is derived from CTA family 
members NY-ESO-1 and LAGE-1a, upon presentation on HLA-A*02:01, *02:05 or 
*02:06. GSK3377794 has been infused into more than 125 patients with various 
malignancies. Treatment with GSK3377794 has demonstrated unprecedented clinical 
responses in patients with SS, inducing a clinical response in 50% of treated SS patients 
with a manageable safety profile [D'Angelo, 2018b]. This therapy is currently being 
explored in other tumors including NSCLC, Myxoid round cell liposarcoma (MRCLS), 
and multiple myeloma.  Details are provided in Section 3.2.2. 
3.2.2. 
GSK3377794 (letetresgene autoleucel, lete-cel) 
All next-generation T-cell therapies anticipated to be tested in this master protocol 
encode the same affinity-enhanced TCR (c259) as GSK3377794 (lete-cel), and thus 
recognize NY-ESO-1 and LAGE-1a tumor antigens with high affinity.  Therefore, prior 

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observations and outcomes of clinical trials investigating GSK3377794 (lete-cel) provide 
relevant information for the development of these next-generation therapies.  
As of 27 January 2021, 125 participants have received GSK3377794 infusions in clinical 
studies. For the most up to date information regarding lete-cel, please refer to the current 
IB. The clinical development program for GSK3377794 consists of 11 studies in 6 tumor 
types, including the studies that were started by Adaptimmune and taken over by GSK 
and studies started by GSK since the transfer.  An observational long-term follow-up 
study 208750 is also being conducted in participants exposed to GSK adoptive cell 
therapies in a previous clinical trial. 
Additional information about GSK3377794 (lete-cel), including a review of existing data 
in the context of the benefit/risk assessment of the next-generation products, is provided 
in the relevant substudy specific sections. 
3.2.3. 
Next Generation Engineering 
Despite the encouraging early efficacy results, not all patients receiving GSK3377794 
have experienced a clinical benefit. Additionally, some patients who achieved responses 
have eventually relapsed with their disease [D'Angelo, 2018b].  
Enhanced efficacy of tumor-specific T cells against solid tumors, aiming to increase the 
response rate of TCR T-cell therapy, requires strategies levering their 
immunosuppressive microenvironment. Therefore, GSK has been developing 
enhancement technologies and the first wave of these enhancements includes using MCE 
to enable co-expression of additional components alongside the NY-ESO-1c259 TCR. The 
first two assets to be investigated are GSK3901961 and GSK3845097 as described in 
Substudy 1 and Substudy 2.  Other NY-ESO-1 specific T cells may be introduced into 
this protocol and will be described in additional substudy specific modules. For more 
details regarding additional substudies, please refer to the List of Substudies in 
Section 12.12.  

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4. 
OBJECTIVES AND ENDPOINTS 
In general, the objectives and endpoints below will apply to all substudies unless 
otherwise specified.  Discrepancies between those stated here and those in the substudy 
specific sections will not require amendment and those stated in the substudy specific 
sections will apply. 
Exploratory objectives and endpoints, if any, will be provided in the substudy specific 
sections.  
Objectives 
Endpoints 
Primary 
To assess the safety, tolerability and determine 
recommended phase 2 dose (RP2D) of 
NY-ESO-1 and LAGE-1a specific T cells, alone 
or in combination with other agents, in HLA-A*02 
positive participants with NY-ESO-1 and/or 
LAGE-1a positive advanced tumors 
• Frequency of dose-limiting toxicities 
(DLTs)  
• Frequency and severity of adverse events 
(AEs), serious adverse events (SAEs) 
and AEs of special interest (AESI; as 
defined in the core protocol) 
Secondary – Efficacy 
To investigate the efficacy of NY-ESO-1 and 
LAGE-1a specific T cells, alone or in 
combination with other agents, in HLA-A*02 
positive participants with NY-ESO-1 and/or 
LAGE-1a positive advanced tumors 
• Overall Response Rate (ORR) 
(investigator assessed according to 
RECIST v1.1) 
• Duration of Response (DoR) 
Secondary – Pharmacokinetics 
To characterize in vivo cellular PK profile (levels, 
expansion, persistence) of NY-ESO-1 and 
LAGE-1a specific T cells, alone or in 
combination with other agents, over time 
• Maximum transgene expansion (Cmax) 
• Time to Cmax (Tmax) 
• Area under the time curve from zero to 
time t AUC(0-t), as data permit 
AE = adverse event; AESI = AE of special interest; DLTs = dose-limiting toxicities; DoR = duration of response; 
HLA = human leukocyte antigen; NY-ESO-1 = New York esophageal antigen-1; ORR = overall response rate; 
RECIST = Response Evaluation Criteria in Solid Tumors; RP2D = recommended phase 2 dose; SAE = serious AE. 
 

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5. 
STUDY DESIGN 
5.1. 
Overall Design 
This is a master protocol investigating the safety, tolerability, RP2D and early efficacy of 
autologous, next-generation, NY-ESO-1 and LAGE-1a specific T cells, alone or in 
combination with other agents, in HLA-A*02 positive participants with NY-ESO-1 
and/or LAGE-1a positive advanced tumors.  
This protocol consists of a core protocol with multiple independent substudies.  The 
protocol will initially include two substudies to investigate (a) GSK3901961 (NY-ESO-1 
TCR engineered T cells co-expressing the α-chain of the CD8 co-receptor) in previously 
treated (2L+) HLA-A*02+ participants with NY-ESO-1+ advanced SS, MRCLS, or 
NSCLC (Substudy 1) and (b) GSK3845097 (NY-ESO-1 TCR engineered T cells 
co-expressing, the dnTGF-βRII receptor) in previously treated (2L+) HLA-A*02+ 
participants with NY-ESO-1+ advanced SS or MRCLS (Substudy 2). For more details 
regarding additional substudies and indications, please refer to the list in Section 12.12.  
The protocol may be amended at a later time to add additional substudies to investigate 
other NY-ESO-1 and/or LAGE-1a positive tumor types and other NY-ESO-1 and 
LAGE-1a specific T cells, potentially in combination with other agents (see Figure 2 
Study Design schematic below).  Details of treatment are provided in the substudy 
specific sections. 
Unless otherwise specified in a substudy specific section, participants will receive 
NY-ESO-1 and LAGE-1a specific T-cells after Screening, fulfilling eligibility criteria 
and completing lymphodepleting chemotherapy. 
Figure 2 
Study Design 
 
Note:   Schema will not be updated for any additional substudies - please refer to Core Section 12.12. for 
the complete list of substudies. Participants with LAGE-1a positive tumors will be eligible if identified 
under a designated central laboratory test when available. 
Participants included in different substudies may have the same eligibility criteria.   
Long-
Term 
Follow-
Up Study
Next Generations 
Enhanced NY-ESO-
1/LAGE_1a Specific  T 
Cells in participants 
with 
relapsed/refractory 
advanced tumors
Substudies
Substudy 1:  GSK3901961 [CD8α_NY-ESO-1(c259)T]
in previously treated HLA-A*02 positive participants with 
• NY-ESO-1/LAGE-1a positive metastatic NSCLC  (Cohort 1)
• NY-ESO-1/LAGE-1a positive metastatic or unresectable 
SS/MRCLS (Cohort 2)
                38  09  [       _NY     1    9   
                                                          
•                                                      
        
                                  
                                                           
                                                         
                         

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Sponsor will inform Investigators of the participant assignments between substudies and 
indicate if the participant is to receive a split dose as a sentinel participant (see 
Section 8.1.2 for details) and the number of remaining slots. 
Each substudy in this Master Protocol will consist of two phases: Dose Confirmation 
Phase and Dose Expansion Phase. 
5.1.1. 
Dose Confirmation Phase 
In this phase, each next-generation NY-ESO-1 and LAGE-1a T-cell product will be 
evaluated to assess/confirm the RP2D to be used in further clinical investigations. 
5.1.2. 
Dose Expansion Phase 
After RP2D has been determined for a given T-cell product, the dose expansion phase 
will begin.  In this phase, additional participants will be enrolled as necessary to meet the 
substudy requirements for the number of evaluable participants treated at the RP2D.  
Each substudy will define the maximal number of participants for this phase in the 
substudy specific section. 
If supported by safety and efficacy results, additional participants may be enrolled to 
confirm the safety and efficacy in further cohort expansions via a protocol amendment.  
Additional details will be provided in each substudy specific section. 
5.2. 
Participant Journey  
Unless otherwise specified in a given substudy specific section, participants will undergo 
stepwise enrolment followed by treatment according to defined phases within each 
substudy (See Patient Journey Schema Figure 3).  
Figure 3 
Patient Journey Schema 
 
 

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Part 1: Screening 
1) Target expression Screening for tumor expression of NY-ESO-1 and/or LAGE-1a.  For further 
details regarding HLA testing, please refer to the specific substudies. 
Note: Participants screened or enrolled in other GSK treatment studies may be considered for 
enrollment to this study, where it is IRB/IEC approved, on a case-by-case scenario following 
risk/benefit evaluation between the Investigator and Sponsor Medical Monitor (or designee).  
Where a participant was previously tested for HLA positivity, and/or NY-ESO-1/LAGE-1a 
expression under a different GSK-sponsored protocol, testing of HLA and/or 
NY-ESO-1/LAGE-1a  for 209012 may not be required dependent on the test platform(s) used and 
whether they meet the 209012 protocol requirements. If the 209012 requirements are not met, 
repeat testing may be required and may or may not require new sample collection. 
2) Leukapheresis screening phase to determine eligibility for undergoing leukapheresis beginning up 
to 28 days prior to leukapheresis. 
 
Part 2: Leukapheresis/Manufacture 
3) Leukapheresis procedure  
Note: leukapheresis may have been performed under another GSK-sponsored protocol or substudy 
of this protocol.  
 
Part 3: Lymphodepletion, Treatment, and Follow-up 
4) Treatment fitness assessment and eligibility confirmation,  
5) Interventional phase including Lymphodepletion from Days -7 to -4, TCR engineered T-cell 
infusion on Day 1, and follow-up as defined in each specific substudy.  
Note: TCR engineered T cells may have been manufactured under another GSK-sponsored 
protocol or substudy of this protocol. 
 
Part 4: Long-Term Follow-Up (LTFU) 
6) Long-term follow-up phase for up to 15 years from the date of TCR engineered T-cell infusion.    
 
Part 1: Screening 
Screening will consist of two phases:  Target Expression Screening and Leukapheresis 
eligibility Screening. 
Participant Target Expression Screening may start at any time after diagnosis of advanced 
disease; either prior to or during ongoing line of prior therapy, subject to any substudy 
specific requirements; also consult the substudy requirements for specific mandates on 
the presence of radiographic and/or clinical disease progression at the time of Screening.  
Once informed consent has been obtained, a blood sample will be collected from each 
participant for testing the presence of HLA-A*02:01, HLA-A*02:05 and/or 
HLA-A*02:06. NY-ESO-1 and/or LAGE-1a expression will also be evaluated on 
representative tumor tissue from a formalin-fixed and paraffin-embedded (FFPE) archival 
(most recent preferred) or fresh biopsy.  HLA-typing and tumor antigen expression 
testing should be performed sequentially (considering the expected >50% attrition with 
HLA) but may also be performed in parallel at the discretion of the Investigator. If an 
Investigator is aware of a participant’s positive HLA status (the presence of 
HLA-A*02:01, HLA-A*02:05, and/or HLA-A*02:06 based on high resolution local 
testing), the Investigator may provide tumor tissue for antigen testing either at the same 
time as or before a confirmatory HLA test by the central laboratory.  Participants with the 
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the NYESO-1 and/or LAGE1a antigen, as measured using validated testing at a 
designated central laboratory, are eligible to undergo further Screening under this 
protocol.  Note: target expression Screening may also be performed under a separate 
Screening protocol such as the GSK molecular disease characterization initiative (MDCI) 
study (213299), or another GSK-sponsored NY-ESO-1 and/or LAGE-1a targeting T-cell 
protocol or substudy of this protocol. 
Once participants are deemed HLA positive and tumor antigen expression positive, they 
will sign the main study informed consent to undergo screening for leukapheresis 
eligibility within 28 days prior to the day of the scheduled leukapheresis procedure. 
Part 2: Leukapheresis/Manufacture 
Following completion of Screening, participants who meet substudy entry criteria will be 
eligible to the study. Eligible participants will undergo leukapheresis to collect 
autologous T cells. 
The initiation of leukapheresis procedure constitutes enrollment to the study. 
The collected T cells will undergo MCE transduction to manufacture the investigational 
product (IP), as specified in each substudy specific section. 
Unless otherwise specified in a substudy specific section, bridging therapies 
(e.g., chemotherapy, local therapy [e.g. radiotherapy, cryoablation, surgical resection]) 
may be administered between leukapheresis and the start of lymphodepletion, if a 
participant cannot be treatment-free. The following conditions must be met: 
1. Mandatory washout periods prior to start of T-cell infusion must be respected (see 
substudy specific sections) 
AND 
2. Indicated based on benefit/risk assessment and/or local regulatory requirements and 
following agreement with Sponsor’s Medical Monitor (or designee) 
AND 
3. Treatments, AEs and other clinical observations are reported into the current study 
database 
 
Participants who failed screening or withdrew before T-cell infusion, may rescreen in the 
same substudy or consider entering screening for another substudy (see Section 6.3 for 
further details). 
Part 3: Lymphodepletion, Treatment, and Follow-up 
The following conditions need to be satisfied prior to initiating lymphodepletion and 
T-cell treatment: 
1. Treatment fitness assessment and confirmation of additional inclusion/exclusion 
criteria for treatment must be completed from 1 to 10 days prior to initiating 
lymphodepleting chemotherapy. 
2. Baseline radiological tumor assessment is obtained from 1 to 10 days prior to 
lymphodepletion.  
3. T cell product availability verified by site for each criterion below:  

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
Pr ot o c ol A m d 0 4  
 
2 8  
C or e  
 
a. C o nfir mati o n of s uccessf ul ma n ufact ur e of T -cell pr o d uct  
b.  T -cell pr o d uct s atisfies all release criteria  as state d o n Certificate of 
A nal ysis  
c. T -cell pr o d uct a vaila ble f or i nf usi o n at t he site per criteria s pecifie d i n t he 
Dr u g  Pr o d uct a n d I nf usi o n Ma n ual  
4.  Pre -treat me nt t u m or bi o ps y c ollecte d wit hi n 2 8 da ys  pri or t o  i nitiati n g 
l y m p h o de pleti o n is re q uire d. T his bi o ps y will be use d as t he Baseli ne sa mpl e  f or 
a n al ys es . If it is n ot feasi ble t o o btai n a fres h bi o ps y, a n arc hi val t u m or 
bi o ps y  ( F F P E bl oc k) t a k e n prefera bl y after c o m pleti o n of t he partici pa nt’s last 
li ne of t hera p y, prefera bl y wit hi n 9 0 da ys pri or t o i nitiati n g l y m p h o de pleti n g 
c he m ot hera p y,  m a y be acce pte d at t he discreti o n of t he Me dical M o nit or ( or 
desi g nee) . F or partici pa nts w h o alrea d y pr o vi de d a fres h bi o ps y f or a nti ge n 
e x pressi o n a n d di d n ot recei ve a n y s u bs e q ue nt bri d gi n g  or sta n d ar d of care li ne of 
a nti ca ncer t hera p y, t h is scree ni n g bi o ps y ma y b e use d as t he B aseli ne sa m ple 
pr o vi de d t he scree ni n g bi o ps y was ta ke n prefera bl y wit hi n 9 0  da ys pri or t o 
i nitiati n g l y m p h o de pleti n g c h e m ot hera p y. 
 
F oll o wi n g l y m p h o de pleti o n, after ~ 2 4 h o urs of c o m pleti n g l y m p h o d e pleti n g 
c he m ot herap y, p artici pa nts m ust recei ve Gra n ul oc yt e-C ol o n y Sti m ulati n g Fact or 
( G-C S F) s u p p ort .  T h e f or m ulati o n of G -C S F t o be use d ca n b e deci de d b y t he 
I n v esti gat or base d o n t h e i nstit uti o nal practice.  
Refer t o s u bst u d y s pecifi c secti o ns f or i nf or mati o n o n T-cell i nf usi o n, h os pitalizati o n a n d 
f oll o w-u p g ui d eli nes . A d diti o nal cl ose m o nit ori n g or h os pitalizati o n ma y b e warra nte d 
base d u p o n cli nical ne e d a n d is at I n vesti gat or’s discreti o n ( pleas e refer t o S ecti o n 9. 1  f or 
safet y assess me nts a n d m o nit ori n g; Secti o n 9. 2  f or re p orti n g of a d v erse e ve nts; a n d 
Sect i o n 1 2. 7  f or s u p p orti ve care g ui da nce o n T-cell i nf usi o n, C R S a n d ot her p ote ntial 
ris ks). 
If a d diti o nal treat me nts are c o m bi ne d wit h T-cell treat me nt  i n f ut ure s u bst u dies, t he 
details of t h ose treat me nts will be gi ve n i n t he s u bst u d y s pecific secti o ns . 
Partici pa nts will be fre q u e ntl y m o nit ore d f or a n y u ne x pecte d Gra d e ≥3 A E a n d a n y 
S A Es , acc or di n g t o t he S o A i n t he s u bst u dy s pecific secti o ns. 
Partici pa nts w h o are n ot eli gi ble f or st u d y i nter ve nti o n b y t he ti me T  Cells e x pire, will be 
wit h dra w n fr o m t he st u d y a n d will n ot u n der g o l y m p h o de pleti o n wit hi n t his st u d y.  
A n y re mai ni n g ma n ufact ure d T  cells fr o m eac h partici pa nt ( w het her or n ot eli gi ble f or 
st u d y i nter ve nti o n) will b e st ore d b y t he S p o ns or f or t he c urre nt s helf life of t he cells aft er 
ma n ufact ur e is c o m plete d.  After e x pir y of t he s h elf life, t he st ore d T  cells ca n be 
destr o ye d or, if c o nse nte d  b y t he p artici pa nt , use d f or scie ntific researc h at the S p o ns or’s 
discreti o n f or a p eri o d of u p t o 1 5 years de p e n di n g o n l ocal re g ulati o ns .  
P art 4:  L o n g -T er m F oll o w -U p ( L T F U ) 
U p o n c o m pleti n g t he i nter ve nti o nal p orti o n of a gi ve n s u bst u d y (as defi n e d f or eac h 
s u bst u d y s pecifi c secti o n), b ut n o s o o ner t ha n 9 0 da ys  p ost T -cell i nf usi o n  (i n or der t o 
ca pt ure e n o u g h safet y i nf or mati o n), partici pa nts will be e ntere d i nt o a se p arate l o n g -ter m 
C CI

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follow-up (LTFU) protocol (GSK Study 208750) and will be monitored for 15 years. If 
the LTFU protocol is not yet available at the particular clinical site, participants can be 
followed per LTFU schedules in substudy specific sections until the LTFU protocol 
becomes available. The transfer of any participant to the LTFU study (Study 208750) 
should occur within 6 months of completing the interventional portion of a substudy. 
5.3. 
Number of Participants 
This is a master protocol consisting of multiple substudies, the overall sample size is not 
fixed. For details regarding participant numbers for each substudy, please refer to the List 
of Substudies in Section 12.12. 
Any further expansions of individual substudies or additional new substudies will be 
added via protocol amendments with specification of number of participants for each 
expansion and/or substudy. Any additional sub-studies will be added by amendment 
subject to regulatory review.   
Refer to the substudy specific sections for additional details on sample size 
determinations. 
5.4. 
Scientific Rationale for Protocol Design 
This is a master protocol to assess, via multiple independent substudies, the safety, 
tolerability and RP2D of multiple autologous next-generation NYESO-1 and/or LAGE1a 
specific T cells, alone or in combination with other agents, in HLA-A*02 positive 
participants with NYESO-1 and/or LAGE1a positive advanced tumors. GSK seeks to test 
these next-generation agents in the clinic, relying on the currently available nonclinical 
models and the first-generation GSK3377794 (lete-cel) clinical and nonclinical data, with 
an optimal strategy to enable rapid establishment of tolerability and proof of concept for 
efficient further development decisions and early access to patients. 
This master protocol design provides the flexibility to conduct multiple substudies, 
thereby permitting an efficient evaluation of agents in multiple indications compared with 
separate clinical trials (either by indication or by product). This mechanism provides an 
opportunity to optimize the choice of candidates to advance into mid/late-stage product 
development by permitting efficient generation of clinical data that cannot be gained 
using currently available nonclinical models [FOCR, 2019]. 
The scientific rationale for the design of each substudy, including rationales for the 
participant population and dose selection, are provided in each substudy specific section.  
5.4.1. 
Data Monitoring Committee  
A dose selection committee (DSC) will be in place (see substudy specific sections for 
descriptions) to periodically evaluate safety of the dose levels and to make dose level 
(de/re)-escalation decisions.  Further details on the DSC will be provided in the Dose 
Selection Plan.  Further data review committees may be put in place as cohort expansions 
and new substudies may require it.  

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5.5. 
End of Study Definition 
5.5.1. 
End of Study for Individual Participants 
Refer to the substudy specific sections for end of substudy definitions for individual 
participants. 
5.5.2. 
End of Master Protocol  
This Master Protocol will end as of the last visit of the last participant in the last 
substudy, or when all participants have met their respective substudy end criteria 
including those who have died, withdrawn consent, are lost to follow-up, or have 
transferred to the separate long-term follow up protocol (GSK study 208750) for 
observation of delayed AEs and survival for a duration of 15 years post-T-cell infusion in 
accordance with Food and Drug Administration (FDA) [FDA, 2020b] and European 
Medicines Agency (EMA) guidance [EMA, 2009].  

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6. 
PROTOCOL POPULATION 
The protocol will enroll participants with advanced tumors to independent substudies. 
Initially, the protocol will enroll participants with advanced SS or MRCLS (Substudies 1 
and 2) and advanced NSCLC (Substudy 1).  Any additional substudy may include SS, 
MRCLS, NSCLC or other tumor types – please refer to Core Section 12.12 for the 
complete list of substudies. The rationale for the chosen tumor settings will be discussed 
in the substudy specific sections. 
The full detailed inclusion and exclusion criteria and lifestyle considerations are 
presented in the substudy specific section.  Prospective approval of protocol deviations 
relating to enrolment criteria for the purpose of recruiting participants, also known as 
protocol waivers or exemptions, is not permitted. 
6.1. 
Screen Failures 
Screen failures are defined as participants who consent to participate in the clinical 
protocol but are not subsequently enrolled into a substudy. A minimal set of screen 
failure information is required to ensure transparent reporting of screen failure 
participants to meet the Consolidated Standards of Reporting Trials (CONSORT) 
publishing requirements and to respond to queries from regulatory authorities. Minimal 
information includes demography, screen failure details, eligibility criteria, disease 
characteristics, prior line of anti-cancer treatments and any serious adverse events 
(SAEs). 
6.2. 
Screening under Other GSK Studies 
Participants screened or enrolled in other GSK treatment studies may be considered for 
enrollment to this study, where it is IRB/IEC approved, on a case-by-case scenario 
following risk/benefit evaluation between the Investigator and Sponsor Medical Monitor 
(or designee).  
Where a participant was previously tested for HLA and/or NYESO1/LAGE-1a 
expression under a different GSK-sponsored protocol, testing of HLA and/or 
NYESO1/LAGE-1a for 209012 may not be required dependent on the test platform(s) 
used and whether they meet the 209012 protocol requirements. If the 209012 
requirements are not met, repeat testing may be required and may or may not require new 
sample collection. Other screening/baseline assessments or procedures (e.g., biopsy 
collection, imaging) performed under a separate GSK sponsored protocol may be 
accepted, in consultation with the Sponsor Medical Monitor.  
6.3. 
Rescreening/Transfer 
Individuals who do not meet the criteria for participation in a given substudy at any stage 
(screen failure for reasons other than HLA negative and/or NY-ESO-1 and LAGE-1a 
negative diagnostic status) or who were withdrawn prior to T-cell administration may be 
rescreened or transferred to any applicable GSK-sponsored study or substudy of this 
protocol.  HLA typing may not need to be repeated (Section 6.2). Rescreening for the 

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NY-ESO-1 and/or LAGE-1a antigen expression of a recent tumor sample may not be 
required depending on the test platform(s) used and whether they meet the 209012 
protocol requirements (Section 6.2). For participants who were withdrawn after 
leukapheresis but before T-cell administration and for whom suitable leukapheresis or 
manufactured product is available, the requirement for leukapheresis and/or 
remanufacture may be waived after consultation with the Sponsor. 

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7. 
STUDY INTERVENTION 
Study intervention is defined as any investigational intervention(s), marketed product(s), 
placebo, or medical device(s) intended to be administered to a study participant according 
to the study protocol. 
Details of study interventions and guidelines, including dose, administration, and 
concomitant medications are specified in each substudy specific section.  
In general, however, study intervention will follow the steps outlined in Section 5.2 of the 
Core Protocol and in the intervention schema included there.   

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8. 
DISCONTINUATION OF STUDY INTERVENTION AND 
PARTICIPANT DISCONTINUATION/WITHDRAWAL 
The guidelines and criteria below apply to all protocol participants except where 
otherwise indicated in substudy specific sections.  
8.1. 
Discontinuation of Study Intervention 
8.1.1. 
Single Dose Administration 
As the T-cell intervention is expected to be administered as a single dose for all 
autologous next-generation NY-ESO-1 and LAGE-1a specific T cells to be tested in this 
master protocol, there is no possibility of discontinuation of study intervention.  In the 
event of severe reactions during infusion, the infusion may be interrupted. 
Please refer to the current Drug Product and Infusion Manual for details of dose 
administration. Please refer to Section 9.1 for safety assessments and monitoring; Section 
9.2 for reporting of adverse events; and Section 12.7 for supportive care guidance on 
T-cell infusion, CRS and other potential risks.  
Infusion-related reactions Grade 3 or higher during infusion should be reported to 
Sponsor promptly : 
• GSK CGT Patient Supply Co-ordinator by e-mail (GSK.CELL@gsk.com) or by 
phone +1-833-GSK-CELL (+1 833-475-2355) or +44 800-026-6295 (for 
European countries);  
• Medical Monitor or designee (contact information provided in SRM).  
 
In participants with infusion-related reaction Grade ≤2, infusion may be restarted once 
resolved to Grade <1. The bag of cells that was being infused prior to reaction, cannot be 
used beyond 45 minutes after thawing.  
Should other agents be added in future either as monotherapy or combination therapy, 
any additional details will be added via amendment to this core or via additional 
substudies, as applicable. 
8.1.2. 
Split Dose Administration 
While dosing is described in Section 8.1.1, please refer to each substudy for 
substudy-specific details outlining if there is a requirement for the T cells to be 
administered as split dosing (i.e., in two aliquots) to the first (‘sentinel’) participant; such 
split dosing may be extended to additional participants based on the safety and 
tolerability profile. Split dosing may also be required in other substudies if appropriate.  
Additionally, future next-generation NY-ESO-1 and LAGE-1a specific T cells may be 
administered by repeat dosing, or as single doses as well as in combination with other 
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As such, individual stopping rules described below apply only to those participants 
receiving multiple administrations of the T cells and/or other anticancer agents used in 
combination.   
For such participants: 
• The subsequent dose of the agent will be administered as described in the 
respective substudy specific section, unless one of the following events occurs:  
– Clinical deterioration that in the opinion of the Investigator in consultation 
with the Sponsor warrants interrupting or stopping the dosing;  
– Unacceptable toxicity, whether meeting the definition of DLT or not, and 
including meeting the standard GSK stopping criteria for liver chemistry 
and QTc prolongation (see below);  
– Death;  
– Any other substudy-specific event requiring IP interruption or 
discontinuation; 
• Even if the dosing was interrupted or stopped for any of the reasons above, 
participants will continue to be followed according to the SOA, as discontinuation 
of dosing does not represent withdrawal from the study. 
 
In the event of severe reactions during the T-cell infusion, the infusion may be 
interrupted. 
8.2. 
Dose Limiting Toxicity 
The toxicities listed below are considered to be dose limiting toxicities (DLTs) if: 
• They are considered at least possibly related to transduced T cells; AND 
• They occur within the DLT-assessment period of 28 days after the initial dosing 
of T cells.  For participants receiving T cells as split dose, DLT assessment period 
will begin at the start of the first infusion and continue for 28 days after 
completion of the last infusion.   
Of Note:  
• Toxicities related to lymphodepletion will be evaluated by the Sponsor and DSC 
on a case-by-case basis.  
• Attribution of relatedness to treatment for DLT will be discussed between the 
Investigator, the Sponsor, DSC, and any other substudy-specific review 
committee; where attribution varies, the most conservative assessment will be 
retained. 
• Additional toxicities which occur following the DLT assessment period of 
28 days may be declared DLTs, after consultation between the Sponsor, DSC, and 
any other substudy-specific review committee based on the emerging safety 
profile. 

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• Individual substudies may expand the list below to include additional defined 
DLTs as appropriate based on the mechanism of action of the specific transduced 
T cells. 
 
The following will be considered DLTs: 
1. Grade 4 or greater toxicities (including death), that are at least possibly related to 
the investigational agent.  
2. Grade 3 toxicities that are at least possibly related to the investigational agent and 
do not resolve to Grade 1 (or Baseline) within 7 days from the onset of the event.  
3. CTCAE Grade ≥3 non-infectious pneumonitis not responding to oxygen 
supplementation and systemic steroid treatment.  
4. Any Grade 3 cytokine release syndrome (CRS) at least possibly related to study 
agent that does not improve to Grade <2 toxicity within 7 days with or without 
dexamethasone 10 mg q12hr IV (or an equivalent corticosteroid dose).  
5. Any Grade 4 CRS at least possibly related to study product that does not improve 
to Grade ≤2 (or Baseline) within 7 days.  
6. Any Grade 3 or greater neurotoxicity that does not resolve to Grade ≤2 within 
72 hours.  
7. Any Grade ≥3 organ toxicity (exclusive of CRS toxicity) involving major organ 
systems that persists for >72 hours and occurs within 28 days of infusion.  
 
The following constitutes exceptions from DLTs: 
• Laboratory abnormalities CTCAE Grade 3 or 4 not considered clinically 
significant by the investigator 
• Electrolyte abnormalities CTCAE Grade 3 or 4 responding to best supportive care 
per institutional guidelines 
• Hypoalbuminemia CTCAE Grade 3 or 4 responding to best supportive care per 
institutional guidelines 
• Fever and chills CTCAE Grade 3 or 4 clinically stable with best supportive care 
per institutional guidelines 
• AE related to the cancer or its progression 
• Thrombocytopenia CTCAE Grade 3 or 4 not associated with significant bleeding 
• Anemia CTCAE Grade 3 or 4 responding to best supportive care per institutional 
guidelines 
• Lymphocytopenia CTCAE Grade 3 or 4 
• Leukopenia CTCAE Grade 3 or 4  
 
For any additional DLT criteria based on asset, please refer to the substudy.  

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8.2.1. 
Liver Chemistry Stopping and Increased Monitoring Criteria 
Liver chemistry stopping and increased monitoring criteria have been designed to assure 
participant safety and evaluate liver event etiology.  
8.2.1.1. 
Stopping Criteria 
The next dose or the second aliquot of a split dose will not be administered to a 
participant if: 
• A participant meets one of the conditions outlined in the algorithm below 
OR 
• When in the presence of abnormal liver chemistries not meeting 
protocol-specified stopping rules, the investigator believes study intervention 
discontinuation is in the best interest of the participant. 
 
 
The following Level 1 and Level 2 monitoring are required for all participants.  
8.2.1.2. 
Level 1 Monitoring 
In the event that a participant develops elevations in liver function test (LFT) parameter 
values as defined below, an increase to liver chemistry monitoring i.e., at weekly 
intervals, will apply.  

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Liver Chemistry Monitoring Criteria Level 1 
Criteria 
Actions 
ALT 3x ULN and 1.5x Baseline value but 
ALT <5x ULN and <2x Baseline value and 
bilirubin <2xULN, without symptoms believed 
to be related to liver injury, or hypersensitivity 
• 
Notify the GSK Medical Monitor within 24 hours of learning 
of the abnormality to discuss participant safety.  
• 
Participant must return weekly for repeat liver chemistries 
(ALT, AST, alkaline phosphatase, bilirubin) until they 
resolve, stabilise or return to within Baseline  
• 
If, during monitoring, ALT increases to 5xULN and 2x 
Baseline value or remains 3x ULN and 1.5x Baseline 
value for 4 weeks, or if total bilirubin increases to 2xULN, 
refer to Level 2 monitoring guidance below. 
• 
If, after 4 weeks of monitoring, ALT <3xULN and bilirubin 
<2xULN, monitor participants twice monthly until liver 
chemistries normalize or return to within Baseline. 
ALT = alanine aminotransferase; ULN = upper limit of normal; AST = aspartate aminotransferase. 
8.2.1.3. 
Level 2 Monitoring 
In the event that the participant develops elevations in LFT parameters as defined below, 
an increase to liver chemistry monitoring at more frequent intervals (i.e., twice weekly) 
will apply.  
Liver Chemistry Monitoring Criteria Level 2 
ALT Absolute 
Both ALT 5xULN and 2x Baseline value 
ALT Increase 
Both ALT 3xULN and ≥1.5x Baseline value that persists for 4 weeks 
Bilirubin1, 2 
ALT 3xULN and bilirubin 2xULN (>35% direct bilirubin) 
INR2  
ALT 3xULN and INR >1.5 
Symptomatic3 
ALT 3xULN and 1.5x Baseline value associated with symptoms (new or worsening) 
believed to be related to liver injury or hypersensitivity 
 
Required Actions and Follow-Up Assessments  
Actions 
Follow-Up Assessments 
• 
Report the event to GSK within 24 hours 
• 
Complete the liver event CRF and complete an 
SAE data collection tool if the event also meets 
the criteria for an SAE2 
• 
Perform liver event follow-up assessments  
• 
Monitor the participant until liver chemistries 
resolve, stabilize, or return to within Baseline 
(pre-gene therapy) 
MONITORING: 
For bilirubin or INR criteria:  
• 
Repeat liver chemistries (include ALT, AST, 
alkaline phosphatase, bilirubin, INR) and 
perform liver event follow-up assessments 
within 24 hrs 
• Viral hepatitis serology4 
• Obtain INR and recheck with each liver chemistry 
assessment until the transaminases values show 
downward trend 
• Serum creatine phosphokinase (CPK) and lactate 
dehydrogenase (LDH). 
• Fractionate bilirubin, if total bilirubin 2xULN 
• If possible, obtain peripheral blood for persistence of 
genetically modified cells. 
• Obtain complete blood count with differential to assess 
eosinophilia 
• Record the appearance or worsening of clinical 
symptoms of liver injury, or hypersensitivity, on the AE 
report form 

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• 
Monitor participants twice weekly until liver 
chemistries resolve, stabilize or return to within 
Baseline (pre-gene therapy) 
• 
A specialist or hepatology consultation is 
recommended 
For all other criteria:  
• 
Repeat liver chemistries (include ALT, AST, 
alkaline phosphatase, bilirubin, INR) and 
perform liver event follow-up assessments 
within 24-72 hrs  
• 
Monitor participants at least weekly until liver 
chemistries resolve, stabilize or return to within 
Baseline (pre-Gene Therapy) 
• Record use of concomitant medications on the 
concomitant medications report form including 
acetaminophen, herbal remedies, other over the 
counter medications. 
• Record alcohol use on the liver event alcohol intake 
case report form 
For bilirubin or INR criteria: 
• Anti-nuclear antibody, anti-smooth muscle antibody, 
Type 1 anti-liver kidney microsomal antibodies, and 
quantitative total immunoglobulin G (IgG) or gamma 
globulins. 
• Liver imaging (ultrasound, magnetic resonance, or 
computed tomography) and /or liver biopsy to evaluate 
liver disease; complete Liver Imaging and/or Liver 
Biopsy CRFs. 
1. 
Serum bilirubin fractionation should be performed if testing is available. Additionally, if serum bilirubin fractionation 
testing is unavailable, record presence of detectable urinary bilirubin on dipstick, indicating direct bilirubin 
elevations and suggesting liver injury.  
2. 
All events of ALT 3xULN and bilirubin 2xULN (>35% direct bilirubin) or ALT 3xULN and INR >1.5, which may 
indicate severe liver injury (possible ‘Hy’s Law’), must be reported as an SAE (excluding studies of hepatic 
impairment or cirrhosis); The INR threshold value stated will not apply to participants receiving anticoagulants. 
3. 
New or worsening symptoms believed to be related to liver injury (such as fatigue, nausea, vomiting, right upper 
quadrant pain or tenderness, or jaundice) or believed to be related to hypersensitivity (such as fever, rash or 
eosinophilia).  
4. 
Includes: Hepatitis A IgM antibody; Hepatitis B surface antigen (HbsAg) and Hepatitis B Core Antibody (IgM); 
Hepatitis C RNA; Cytomegalovirus IgM antibody; Epstein-Barr viral capsid antigen IgM antibody (or if unavailable, 
obtain heterophile antibody or monospot testing); Hepatitis E IgM antibody. 
ALT = alanine aminotransferase; AST = aspartate aminotransferase; CPK = creatine phosphokinase; CRF = Case 
Report Form; LDH = lactate dehydrogenase; INR = International normalized ratio; ULN = upper limit of normal. 
 
8.2.1.4. 
Administration of Subsequent T Cell Dose(s) after Liver Stopping 
Criteria Met 
If participant meets liver chemistry stopping criteria and subsequently the liver event 
resolves, any planned subsequent T cell dose(s) may be administered, provided: 
• 
GSK Medical Governance approval is granted 
• 
Ethics and/or Institutional review board (IRB) approval is obtained, if required, and 
• 
Separate consent for intervention restart/rechallenge is signed by the participant 
 
If GSK Medical Governance approval to administer subsequent dose(s) is not granted, 
then participant will continue in the study for protocol-specified follow up assessments. 
8.2.2. 
QTc Stopping Criteria 
The following QTc stopping criteria will apply: 
• 
QTc >500 msec  
OR 
• 
Change from Baseline of QTc >60 msec 
 

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For participants with underlying bundle branch block, follow the discontinuation 
criteria listed below: 
Baseline QTc with Bundle Branch Block 
Discontinuation QTc with Bundle Branch Block 
<450 msec 
>500 msec 
450 – 480 msec 
≥530 msec 
 
Notes: 
• 
The same QT correction formula must be used for each individual participant to 
determine eligibility for and discontinuation from further study treatment.  This 
formula may not be changed or substituted once the participant has been enrolled. 
– For example, if a participant is eligible for the protocol based on QTcB, then 
QTcB must be used for discontinuation of this individual participant as well. 
– Once the QT correction formula has been chosen for a participant’s eligibility, 
the same formula must continue to be used for that participant for all QTc data 
being collected for data analysis.  Safety electrocardiograms (ECGs) and other 
non-protocol specified ECGs are an exception.   
• The QTc should be based on the average of triplicate ECG readings obtained over a 
brief (e.g., 5-10 minute) recording period. 
 
8.2.3. 
Temporary Discontinuation 
Infusion of the IP can be stopped for any adverse events experienced by the participant or 
observed by the treating physician.  Refer to the Drug Product and Infusion Manual for 
details of dose administration.  
NY-ESO-1 specific TCR engineered T cells intervention is typically administered as a 
single dose via IV infusion, except for sentinel participants who will receive a split dose 
(Section 8.1.2).  In the event of severe reactions associated with liver toxicities during or 
in between the 2 doses, the infusion may be interrupted or delayed.  Please refer to 
Section 8.1 for guidance on discontinuation of intervention and restarting of infusion.  
Should other agents be added in future either as monotherapy or combination therapy, 
any additional details will be added via amendment to this core or via additional 
substudies, as applicable. 
8.3. 
Participant Discontinuation/Withdrawal from the Study 
• 
A participant may withdraw from the substudy to which he/she is enrolled at any 
time at his/her own request or at the discretion of the Investigator for safety, 
behavioral, compliance or administrative reasons. No further assessments will be 
required, and the Investigator must document this in the site study records.  
• 
Treatment follow-up may be permanently discontinued for any of the following 
reasons: 
– Significant deviation(s) from the protocol 

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– Withdrawal of consent by participant (or proxy) 
– Participant is lost to follow-up 
– Closure or termination of the study by the sponsor 
• 
Participants for whom treatment follow-up has been permanently discontinued will 
continue into the LTFU phase of the protocol or, if consent was given, into the LTFU 
study GSK 208750.   
• 
If the participant withdraws consent for disclosure of future information, the sponsor 
may retain and continue to use any data collected before such a withdrawal of 
consent. 
• 
If a participant withdraws from the substudy to which he/she is enrolled after 
providing study samples, GSK will retain those samples and any results generated 
from testing prior to participant withdrawal, as described in the informed consent.  If 
the participant specifically requested destruction of their samples at the time of 
withdrawal, the Investigator should notify GSK, and document this in the site study 
records. Once notified, GSK will not perform any further testing, and will destroy 
the sample.  
• 
A participant will be considered to have withdrawn from the substudy to which 
he/she is enrolled if the participant has not died and is lost to follow-up (Section 8.4 
of the core protocol). 
• 
Refer to the SoA in each substudy specific section for data to be collected at the time 
of study discontinuation and for any further evaluations that need to be completed.  
 
8.4. 
Lost to Follow Up 
A participant will be considered lost to follow-up if he or she repeatedly fails to return for 
scheduled visits and is unable to be contacted by the study site.  
The following actions must be taken if a participant fails to return to the clinic for a 
required study visit: 
• 
The site must attempt to contact the participant and reschedule the missed visit as 
soon as possible and counsel the participant on the importance of maintaining the 
assigned visit schedule and ascertain whether the participant wishes to and/or should 
continue in the substudy to which he/she is enrolled. 
• 
Before a participant is deemed lost to follow up, the Investigator or designee must 
make every effort to regain contact with the participant (where possible, 3 telephone 
calls and, if necessary, a certified letter to the participant’s last known mailing 
address or local equivalent methods). These contact attempts should be documented 
in the participant’s medical record. 
• 
Should the participant continue to be unreachable, he/she will be considered to have 
withdrawn from the substudy to which he/she is enrolled.  
 
Discontinuation of specific sites or of the study as a whole is handled as part of 
Section 12.1. 

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8.5. 
Study Stopping and Pausing Rules  
The study will pause enrolment and stop treatment for all participants if any of the 
following events occur pending submission to Regulatory Agencies and review by any 
substudy-specific safety review committees (e.g., DSC), IRBs/ECs, and the Sponsor.   
• 
Uncontrolled clonal T-cell proliferation felt to be attributable to the next-generation 
NY-ESO-1 and LAGE-1a specific T cells  
• 
A case of documented symptomatic progressive cerebral edema confirmed by an 
expert neurological examination and computed tomography (CT)/ magnetic 
resonance imaging (MRI), that is not responding to treatment. 
• 
A biologically functional positive Replication Competent Lentivirus (RCL) after 2 
confirmed positive tests by polymerase chain reaction (PCR). 
• 
Death directly attributed to the investigational agent by the Investigator and DSC. 
• 
Any event of Guillain-Barre syndrome (GBS) as diagnosed by a neurologist 
according to diagnostic guidance for GBS [Fokke, 2014]. 
 
Premature termination of individual substudies or the entire study may occur if: 
• 
Sponsor, in consultation with any safety review committees (e.g., DSC), decides for 
any reason that participant safety may be compromised by continuing the study. 
• 
The Sponsor decides to discontinue the development of the intervention to be used in 
this study.  
 
It is expected that AEs will occur frequently in these patient populations based on the 
underlying advanced malignancies in the initial and future substudies and these can be 
SAEs.  A review of individual significant safety events across all substudies in 
conjunction with the cumulative review of safety data by the sponsor, any 
substudy-specific safety review committees (e.g., DSC), and Investigators, will inform 
decisions for premature termination of individual substudies or the entire study.  SAEs 
that are related to the direct effects of T-cell therapy may be considered as stopping 
criteria.  Interruption or premature termination of individual substudies or the entire 
clinical study may also occur because of a regulatory authority decision.  
Please refer to specific substudies for any additional substudy-specific assessments.  

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9. 
STUDY ASSESSMENTS AND PROCEDURES 
Study assessments and procedures and their timings are summarized in the SoA tables 
within each substudy specific section.  
Unless otherwise stated in a substudy specific section and its SoA, the descriptions and 
guidelines in this section and subsections will apply.  Where there is a discrepancy 
between this core protocol and the relevant substudy specific section, the substudy 
specific section should be followed.  
Adherence to the substudy design requirements, including those specified in the SoA, is 
essential and required for study conduct. Protocol waivers or exemptions are not allowed 
except for immediate safety concerns.  
Immediate safety concerns should be discussed with the Sponsor immediately upon 
occurrence or awareness to determine if the participant should continue or discontinue 
study treatment.  
All Screening evaluations must be completed and reviewed to confirm that potential 
participants meet all eligibility criteria. The Investigator will maintain a Screening log to 
record details of all participants screened and to confirm eligibility or record reasons for 
Screening failure, as applicable.  
Informed consent must be signed by a participant before any study required procedures 
are performed. However, procedures conducted as part of the routine clinical 
management (e.g., imaging studies) and conducted prior to signing of the study informed 
consent may be used for Screening/Baseline assessments provided the procedure fulfills 
the protocol defined specifications and has been performed within the protocol indicated 
timeframe.  
If assessments are scheduled for the same nominal time, then the assessments should 
occur in the following order:  
1. 12-lead ECG  
2. Vital signs  
3. Blood draws  
 
9.1. 
Safety Assessments 
Please refer to the individual substudies for any additional substudy-specific monitoring.  
9.1.1. 
Dose Selection Committee  
Dose selection committee (DSC) will be established for making dose recommendations 
for each investigational agent, i.e. substudy, based on a review of all relevant data. The 
DSC will include participating investigators as well as GSK representatives from 
functional groups including safety, clinical, statistics and may also include external 
experts that are not involved in the study. The committee(s) will be tasked to determine 

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whether the same dose can be given to additional participants; or decide to move to a 
lower dose level for any of the investigational agents as guided by the appropriate 
statistical model (described in the substudy specific section).  The membership, meeting 
structure and frequency, data to be reviewed, and recommendations to be made by the 
committee will be described in the Dose Selection Plan.  
9.1.2. 
GSK Safety Review Team 
For substudies where a DSC is not implemented or once DSC is no longer required when 
dose confirmation phase has completed for a particular substudy, an internal GSK Safety 
review team will be put in place, consisting of a cross functional team of the appropriate 
disciplines required to ensure holistic evaluation of the safety profile of the T-cell product 
under evaluation. The Safety review team will conduct systematic, periodic and 
documented reviews of available safety data and address the safety issues pertinent to the 
medicine.   
9.1.3. 
Physical Examinations 
A complete physical examination will include, at a minimum, weight and assessments of 
the Skin, Cardiovascular, Respiratory, Gastrointestinal and Neurological systems. Height 
will be assessed at timepoints indicated in the SoA in each substudy specific section. 
A dedicated physical examination will include assessments based on specific concerns of 
the Investigator. 
Investigators should pay special attention to clinical signs related to previous serious 
illnesses or tumor sites.  
9.1.4. 
ECOG Performance Status 
The performance status will be assessed using Eastern Cooperative Oncology Group 
(ECOG) scale (Section 12.8) at the time points specified in the SoA in each substudy 
specific section.   
9.1.5. 
Vital Signs 
Blood pressure, pulse measurements (rate and oximetry), respiratory rate, and body 
temperature should be assessed per institutional standards.  The same methods should be 
used throughout the course of the study.  Manual techniques will be used only if an 
automated device is not available. 
Where vital signs and blood collection for laboratory tests are performed on the same 
day, vital signs should be taken before blood collection for laboratory tests. 
9.1.6. 
Cardiac Assessments 
All cardiac assessments will be performed locally at the site. 
The following assessments will be conducted in order to monitor participant safety: 

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An echocardiography (ECHO) or multigated acquisition scan (MUGA) scan is required 
to determine eligibility. Additional scans may be performed as clinically indicated.  
NOTE: the same method of cardiac evaluation should be used consistently for all 
follow-up scans. 
Single or triplicate 12-lead ECG (as indicated in the SOA) will be obtained using an ECG 
machine that automatically calculates the heart rate and measures PR, QRS, QT, and QT 
intervals corrected for heart rate by Fridericia’s formula (QTcF) or QT duration corrected 
for heart rate by Bazzetts’s formula (QTcB) intervals.  The replicate ECG tracings should 
be obtained as closely as possible in succession.  The full set of triplicates should be 
completed within approximately 4 minutes.   
Serum troponin and NT-proBNP / BNP as markers for cardiac health will be assessed 
prior to initiation of lymphodepletion. 
Participants with clinically significant cardiovascular risk factors, such as but not limited to: 
• Prior cardiac insult (ie, prior myocardial infarct and prior coronary 
revascularization)  
• Significant valvular disease  
• Low ejection fraction  
• Cardiomyopathy  
• History of heart failure  
• Significant cardiac arrhythmias  
• History of cardiac toxicity from prior therapies 
• Baseline tumor masses in close proximity to the cardiac muscle 
 
Must: 
• Undergo evaluation by a cardiologist prior to lymphodepletion 
• Be monitored by inpatient continuous cardiac telemetry for a minimum of 3 days 
post Tcell infusion and as long as deemed necessary by the Investigator.  
 
In these participants with clinically significant cardiovascular risk factors, all reports of 
cardiac events following T-cell infusion will be monitored through proactive 
pharmacovigilance to determine causality.  Supportive treatment for these participants 
will be provided per standard clinical practice guidelines. 
9.1.7. 
Pulmonary Assessments 
Participants with known lung metastases (active or previously treated with surgical 
resection or radiotherapy) should be considered for pulmonary consultation prior to 
lymphodepletion, which may include pulmonary function tests. 

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Participants deemed at high risk for pulmonary complications per the pulmonologist 
should have closer post-infusion monitoring during the following periods:  
• Post T-cell infusion, for a minimum of 3 days and for as long as deemed 
necessary by the Investigator 
• If CRS is suspected, for the first week and until symptoms are improving or an 
alternative diagnosis is confirmed 
 
And should include:  
• Close monitoring of chest imaging, as clinically indicated 
• Close monitoring of fluid balance 
• Continuous cardiac telemetry monitoring 
 
Participants who have an airway that may be compromised should be assessed prior to 
lymphodepletion, including considerations such as speech and swallow evaluation, 
anaesthesia consultation, or consideration for closer post-infusion monitoring (as above) 
in the event their airway may be compromised due to tumor inflammation, prior 
surgery/radiation, decreased consciousness, infection, or other cause. 
9.1.8. 
Monitoring for Immune Effector Cell-Associated Neurotoxicity 
Syndrome 
Brain MRI (or CT scan if an MRI is not feasible) must be obtained for all participants as 
part of leukapheresis eligibility Screening. This should be repeated at Baseline prior to 
lymphodepletion in the following: 
• All participants with a history of CNS metastasis, and 
• Participants with no history of brain metastasis if more than 3 months have 
elapsed between the last brain MRI and the start of lymphodepletion  or if they 
show neurological symptoms consistent with CNS metastasis.  
 
Brain MRI may be performed as clinically indicated thereafter.  
Immune Effector Cell-Associated Encephalopathy (ICE) (see Section 12.7.8 for 
definition) must be measured immediately prior to T-cell infusion on the day of infusion, 
and then according to each substudy SoA. Participants with known brain metastases must 
be monitored at least twice per day for the first 5 days following T-cell infusion. If a 
participant is found to have Immune Effector Cell-Associated Neurotoxicity Syndrome 
(ICANS), the ICE neurological assessment tool should be used at least twice per day until 
ICANS is resolved or stable and may be measured at follow up visits if indicated. 
For management of ICANS, refer to Section 12.7.8. 

T M F -1 4 6 8 2 5 6 0  
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O btai n a ne ur ol o gic al c o ns ultati o n f or partici pa nts wit h Gra de 2  or hi g h er ne ur ol o gi c 
e ve nts of a ≥7 da y d urati o n.  Partici pa nts w h o de v el o p si g ns a n d s y m pt o ms c o nsiste nt 
wit h G B S m ust be e val uate d b y a ne ur ol o gist acc or di n g t o dia g n ostic g ui da nce f or G B S 
[F o k ke , 2 0 1 4] t o pr o vi de e x pert rec o m me n dati o ns t o g ui de a p pr o priate di a g n ostic 
w or k u p s uc h as electr o m y o gra p h y ( E M G ), l u m bar p u nct ure, i nf ecti o us pa n el t o g ui de 
ma na ge me nt a n d f oll o w u p  ( See Secti o n 1 2. 7. 1 0 ). 
A n y a d diti o nal m o nit ori n g re q uire me nts or m o difi cati o ns t o t hese re q uir e m e nts as well as 
a n y m a na g e m e nt g ui d eli nes will be a d dress e d i n t he s u bst u dy s pecific secti o ns . 
9. 1. 1 0.  
Cli ni c al S af et y L a b or at or y A s s e s s m e nt s  
Refer t o Secti o n  1 2. 2  f or t he list of cli nical la b orat or y tests t o be p erf or me d.  
T he I n vesti gat or m ust re vie w t he la b orat or y re p ort, d oc u me nt t his re vie w, a n d rec or d a n y 
cli nicall y rele va nt c ha n ges occ urri n g d uri ng t he st u d y i n t he A E s ecti o n of t he C R F. T he 
la b orat or y re p orts m ust be file d wit h t he s o urce d o c u me nts. Cli nicall y si g nifica nt 
a b n or mal la b orat or y fi n di n gs are t h ose w hic h are n ot ass ociate d wit h t he u n derl yi n g 
disease, u nless j u d ge d b y t he I n v esti gat or t o be m ore se vere t ha n e x pecte d f or t he 
partici pa nt's c o n diti o n.  
All a b n or mal la b orat or y val ues c o nsi dere d cli nicall y si g nifi ca nt occ urri n g  d uri n g  
partici pati o n i n t he st u d y or wit hi n 3 0 da ys after t h e last d ose of st u d y treat me nt s h o ul d 
be re peate d u ntil t he val u es ret ur n t o n or mal or B aseli ne. If s uc h v al ues d o n ot ret ur n t o 
n or mal/ B aseli ne wit hi n a peri o d of ti me j u d ge d reas o na ble b y t he I n v esti gat or, t he 
eti ol o g y s h o ul d be i de ntifie d a n d t he s p o ns or n otifie d.  
All pr ot oc ol -re q uir e d la b orat or y assess me nts, as defi ne d i n Secti o n 1 2. 2  m ust be 
c o n d ucte d i n acc or da nce wit h t he la b orat or y ma n ual a n d t he S o A  i n eac h s u bst u d y 
s pecific secti o n. Refere n ce ra n ges f or all safet y p ara meters m ust be pr o vi d e d t o t he site 
b y t he la b orat or y res p o nsi ble f or t he assess me nts.  
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9.2. 
Adverse Events and Serious Adverse Events 
The definitions of an AE or SAE can be found in Section 12.3. 
The Investigator and any qualified designees are responsible for detecting, documenting, 
and reporting events that meet the definition of an AE or SAE.  The Investigator or 
designee is responsible for following up AEs that are serious, considered related to the 
study intervention or the study, or that caused the participant to discontinue the study 
intervention or the study.  
In the absence of a clear alternative etiology (e.g., chemotherapy, concomitant 
medications, disease progression, infections, etc.), AEs should be considered potentially 
immune-related. Immune-related AEs may include diarrhea/colitis, rash, hepatitis, Graft 
versus host disease (GVHD), cytokine release syndrome (CRS), secondary pancytopenia, 
pneumonitis, endocrinopathies, nephritis, and any other manifestations that may indicate 
an immune-related phenomenon. 
Adverse events of special interest (AESIs) in this study are defined in Section 9.2.7. They 
need to be reported to Sponsor (Medical Monitor or designee) within 24 hours via 
e-mail (see SRM for further instructions).  
Certain events in this protocol are identified as delayed AEs and should be marked as 
delayed AEs in the eCRF. 
Delayed AEs are defined as those events that fall into one or more of the 6 categories 
listed below and which occur either after disease progression or last Interventional Phase 
visit, whichever occurs first.  Delayed AEs will be collected as part of the LTFU phase of 
the substudy or in the LTFU Study 208750, contingent upon formal transfer of participant 
to Study 208750. 
Delayed AEs will be collected until 5 years have elapsed from last T-cell infusion, or 
until patient dies, withdraws consent or is deemed lost to follow-up. Delayed AEs will be 
recorded in the CRF if reported by the patient or investigator between years 6 – 15. Any 
AE collected on-study may also be indicated as a delayed AE by the Investigator at their 
discretion.  
The 6 categories for delayed AEs are as follows: 
• New malignancies 
• New incidence or exacerbation of a pre-existing neurological disorder 
• New incidence or exacerbation of a prior rheumatologic or other autoimmune 
disorder 
• New incidence of hematologic disorder 
• New incidence of an infection (potentially related to gene modified cell therapy) 
• Unanticipated illness or hospitalization deemed related to gene modified cell 
therapy 
 

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Time period for designating an event from the above categories as delayed AE in the 
eCRF will be provided in the SRM.  If a participant is monitored in this protocol post 
disease progression (i.e., for LTFU phase), the only AEs that will be assessed are delayed 
AEs. 
9.2.1. 
Time Period and Frequency for Collecting AE and SAE 
Information 
Collection of AEs and SAEs starts from the timing of signing the ICF for target 
expression screening, and will be performed as follows: 
• All AEs/SAEs will be collected from the start of leukapheresis until the end of the 
interventional phase, or through 90 days following T-cell infusion, whichever is 
later, unless a new anticancer therapy is initiated. 
– If the new anticancer therapy is initated within 30 days following T-cell 
infusion, AEs/SAEs will be collected through 30 days following T-cell 
infusion. 
– If the new anticancer therapy is initated beyond the 30 days following T-cell 
infusion, AEs/SAEs will be collected until the new anticancer therapy is 
initiated.  
• Additionally, any AEs or SAEs assessed as related to study participation (e.g., 
study intervention, protocol-mandated procedures, invasive tests, or change in 
existing therapy) or leading to early withdrawal will be collected in the AE 
section of the CRF from the time a participant signs the informed consent for 
target expression Screening.  All other relevant events that begin before the start 
of leukapheresis but after obtaining informed consent will be recorded on the 
Medical History/Current Medical Conditions section of the CRF not the AE 
section. 
 
Figure 4 displays the AE/SAE collection time periods in relationship to the 4 phases of a 
substudy intervention. 

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Figure 4 
 Time Period for Collecting AE and SAE Information 
 
• All SAEs will be recorded and reported to the sponsor or designee immediately 
and under no circumstance should this exceed 24 hours, as indicated in Section 
12.3. The Investigator will submit any updated SAE data to the sponsor within 
24 hours of it being available. 
• Events of special interest (AESIs) (Section 9.2.7) will be reported to the Sponsor 
(Medical Monitor or designee) within 24 hours via e-mail (see SRM for further 
instructions): AESIs should be communicated as soon as suspected, and any 
confirmed diagnosis must be reported immediately. 
• Events occurring after the end of the interventional phase and before the 
participant enrolls onto the LTFU Study 208750 will be collected and reported as 
indicated in the SoA for Part 4 in each substudy specific section.  
• Events occurring after the participant enrolls onto the LTFU Study 208750 will be 
collected and reported in the LTFU protocol database. 
• Any SAE, including death, brought to the attention of an Investigator at any time 
outside of the time period specified above must be reported immediately to the 
Sponsor if the event is considered to be related to investigational product. 
 
9.2.2. 
Method of Detecting AEs and SAEs 
The method of recording, evaluating, and assessing causality of AEs and SAEs and the 
procedures for completing and transmitting SAE reports are provided in Section 12.3. 
Care will be taken not to introduce bias when detecting AE and/or SAE. Open-ended and 
non-leading verbal questioning of the participant is the preferred method to inquire about 
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9.2.3. 
Follow-up of AEs and SAEs 
After the initial AE/SAE report, the Investigator is required to proactively follow each 
participant at subsequent visits/contacts. All SAEs, and non-serious AEs of special 
interest (as defined in Section 9.2.7), will be followed until the event is resolved, 
stabilized, otherwise explained, or the participant is lost to follow-up. Further information 
on follow-up procedures is given in Section 12.3. 
In all cases of SAE that occur after T-cell infusion, a transgene copy (persistence) sample 
must be obtained if feasible. 
9.2.4. 
Regulatory Reporting Requirements for SAEs 
Prompt notification by the Investigator to the sponsor of a SAE is essential so that legal 
obligations and ethical responsibilities towards the safety of participants and the safety of 
a study intervention under clinical investigation are met.  
The sponsor has a legal responsibility to notify both the local regulatory authority and 
other regulatory agencies about the safety of a study intervention under clinical 
investigation. The sponsor will comply with country-specific regulatory requirements 
relating to safety reporting to the regulatory authority, IRB/ IEC, and Investigators. 
Investigator safety reports must be prepared for suspected unexpected serious adverse 
reactions (SUSAR) according to local regulatory requirements and sponsor policy and 
forwarded to Investigators as necessary. 
An Investigator who receives an Investigator safety report describing a SAE or other 
specific safety information (e.g., summary or listing of SAEs) from the sponsor will 
review and then file it along with the Investigator’s Brochure and will notify the 
IRB/IEC, if appropriate according to local requirements. 
• Should female participant or female partner of male participant become pregnant, 
collect details of pregnancy and report per guidelines in Section 12.4.   
• The Investigator should inform GSK within 24 hours of learning of any 
pregnancy and should follow the procedures outlined in Section 12.4. 
• Abnormal pregnancy outcomes (e.g., spontaneous abortion, fetal death, stillbirth, 
congenital anomalies, ectopic pregnancy) are considered SAE. 
• If appropriate, the investigator should advise fertile male participants to consider 
collecting and storing viable sperm prior to undergoing lymphodepletion, given 
that cyclophosphamide may result in partial (oligospermia) or total (azoospermia) 
sterility. 
 
9.2.5. 
Cardiovascular Events and Death 
For any cardiovascular events detailed in Section 12.3.3 and all deaths including those 
attributed to progression of malignant disease, whether or not they are considered SAEs, 
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completed. These sections include questions regarding cardiovascular (including sudden 
cardiac death) and non-cardiovascular death.  
The CV CRFs are presented as queries in response to reporting of certain CV Medical 
dictionary for regulatory activities (MedDRA) terms. The CV information should be 
recorded in the specific cardiovascular section of the CRF within one week of receipt of a 
CV Event data query prompting its completion.  
The Death CRF is provided immediately after the occurrence or outcome of death is 
reported. Initial and follow-up reports regarding death must be completed within one 
week of when the death is reported. 
9.2.6. 
Progression of Underlying Malignancy 
Progression of underlying malignancy and related symptoms are not reported as an AE if 
it is clearly consistent with the suspected progression of the underlying cancer. Clinical 
symptoms of progression may be reported as AEs if the symptoms cannot be determined 
as exclusively due to the progression of the underlying malignancy or does not fit the 
expected pattern of progression for the disease under study. 
If there is any uncertainty about an AE being due only to the disease under study, it 
should be reported as an AE or SAE. 
9.2.7. 
Adverse Events of Special Interest (AESIs) 
Adverse events of special interest for this trial should be communicated to Sponsor 
(Medical Monitor or designee) as soon as suspected, and any confirmed diagnosis must 
be reported to GSK within 24 hours via email to the Sponsor (Medical Monitor or 
designee) (see SRM for further instructions). The AESIs for this study are as follows:  
• Cytokine release syndrome [Note: Grade 3 or higher should be reported as SAE 
within 24 hours.] 
• Graft vs host disease [Note: Grade 3 or higher should be reported as an SAE 
within 24 hours.] 
• Immune Effector Cell-Associated Neurotoxicity Syndrome Grade 1 persisting 
beyond 24 hrs or associated with concurrent CRS; or Grade 2 or higher 
[Note: Grade 3 or higher should be reported as SAE within 24 hours.] 
• Guillain Barre syndrome including acute inflammatory demyelinating 
polyneuropathy (AIDP) [Note: All cases must be reported as SAEs within 24 
hours.] 
• 
Pancytopenia with at least 1 cell line Grade ≥3, present on or after Day 28 after 
the T-cell infusion  
• Aplastic anemia [Note: All cases must be reported as SAEs within 24 hours.] 
• Pneumonitis  
• Neutropenia Grade 4 lasting ≥28 days 
 

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A d diti o nal A E SI t hat d oes n ot nee d t o be re p orte d wit hi n 2 4 h o urs  is: 
•  Treat me nt -relate d i nfl a m mat or y res p o nse at t u m or site(s) 
 
Eac h s u bst u d y s pecific s ecti o n ma y defi ne a d diti o nal A E SIs. F or a n y a d diti o nal 
s u bst u d y-s pecific A E SIs, refer t o t he s u bst u d y (see Secti o n  1 2. 1 2  f or a list of t he 
s u bst u dies). 
9. 3.  
Effi c a c y A s s e s s m e nt s  
See s u bst u d y s pecific secti o ns f or a n y a d diti o nal assess me nts.  
9. 3. 1.  
E v al u ati o n of A nti -C a n c er A cti vit y  
T u m or assess me nts f or res p o nse a n d pr o gressi o n will be e val uate d acc or di n g t o 
R E CI S T  v 1. 1 [ Eise n ha uer , 2 0 0 9] a n d i R E CI S T (s ee Secti o n 1 2. 6 ): 
•  R E CI S T v 1. 1 will be use d i n t he assess me nt of disease b ur de n (tar get a n d n o n -
tar get lesi o ns deter mi nati o n ) at B aseline a n d as t he pri mar y meas ure of t u m or 
res p o nse e n d p oi nts.   
•
 
See t he S o A wit hi n eac h s u bst u d y s pecifi c secti o n f or t he sc he d ule of ass ess me nts of 
a nti-ca ncer acti vi t y. A cce pta ble i ma gi n g m o dalities f or t his st u d y i ncl u de: 
•  I V (i o di ne bas e d) c o ntr ast e n ha nce d C T sca n +/ - oral c o ntrast of t h e c hest a n d 
a b d o me n/ pel vis ( C T is t he preferre d m o dalit y f or t u m or assess me nts). E xtre mities  
a n d/ or s ki n lesi o ns will be assesse d if re q uir e d.  
•  I n cases w here c o ntrast e n ha nce d C T is c o ntrai n dicate d : 
o  F or t he a b d o me n/ pel vis, a M RI (wit h a n d wit h o ut ga d oli ni u m c o ntrast ) is 
acce pta ble;   
o  F or t he c hest, a n o n -c o ntrast e n ha n ce d C T or a M RI ( wit h a n d wit h o ut 
ga d oli ni u m c o ntrast) is acce pta bl e . 
•  M RI  of t he e xtre mities  or brai n wit h a n d wit h o ut ga d oli ni u m c o ntrast, or per site 
sta n dar d of care if c o ntr a i n dicate d. 
•  Di gital  p h ot o gra p hs  of s ki n lesi o ns i ncl u di n g a r ul er f or esti mati n g t he size of t he 
lesi o n. 
•  Fl u or o de o x y gl uc os e  ( F D G)-P E T is ge nerall y n ot s uita ble f or o n g oi n g assess me nts 
of disease.   F D G -P E T/ C T will be c ollecte d ce ntrall y if perf or me d as part of t he 
site’s r o uti ne disease ma na ge me nt, at Scree ni n g a n d w hilst o n st u d y.  
 
T hr o u g h o ut t he st u d y, t h e sa me i ma gi n g m o dalit y a n d i ma ge -ac q uisiti o n pr ot oc ol 
(i ncl u di n g t he us e of I V c o ntrast) s h o ul d be use d c o nsiste ntl y acr oss all ti me p oi nts f or a n 
i n di vi d ual partici pa nt t o all o w u nif or m c o m paris o n of lesi o ns.   
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Tumor measurements for each participant should be performed by the same Investigator 
or radiologist (to the extent that this is feasible). 
To allow time for the immune response to become apparent and for potential transient 
inflammatory reaction of the disease to the treatment (‘tumor flare’), response will not be 
assessed before 4 weeks post infusion of the next-generation NY-ESO-1 and LAGE-1a 
specific T cells, unless there is unequivocal clinical evidence of deterioration.  Response 
or progression is to be confirmed by repeat imaging scan performed not earlier than 
4 weeks and not later than 8 weeks after the criteria for response or progression were first 
met (confirmation of progression is only required in participants who are clinically stable 
after criteria for progression were first met).  For post-Baseline assessments, a window is 
permitted to allow for flexible scheduling as defined in the SoA within each substudy 
specific section.  
Tumor images will be obtained by the site and transmitted to a central imaging vendor for 
potential central review. The process for tumor imaging and transmission to the central 
imaging vendor are detailed in the Imaging Manual. 
9.3.2. 
Long-Term Follow-up 
Upon the end of the applicable substudy for each participant, they will be entered into a 
separate LTFU protocol (GSK study 208750) and will be monitored for up to 15 years 
post T-cell infusion for observation of delayed AEs (defined in Section 8.3) in 
accordance with FDA requirements for gene therapy clinical trials [FDA, 2020b; FDA, 
2010].  If the LTFU protocol is not yet available at the particular clinical site, participants 
can be followed per LTFU schedule under this protocol (See SOAs in substudy specific 
sections) until the LTFU protocol becomes available.   
9.4. 
Patient Reported Outcomes 
Patient reported outcomes may be assessed in some of the substudies.  If patient reported 
outcomes are included, specifics regarding these measures will be outlined in the 
substudy specific sections. 
9.5. 
Treatment of Overdose 
Next-generation NY-ESO-1 and LAGE-1a specific T cells must be administered as 
specified in the substudy specific section by trained personnel at the investigational sites 
in this study.  Infusion guidelines provided in the Drug Product and Infusion Manual 
must be strictly followed, including dosing amounts, premedication, duration of infusion, 
and vital sign monitoring. 
In the event of an allergic reaction, the infusion must be immediately stopped, and 
anti-histamine treatment initiated.  Please refer to Section 12.7 for further supportive care 
guidance.  Acute mild respiratory distress developing during or immediately after (within 
48 hours) T-cell infusion can be managed with supportive care, as detailed in 
Section 12.7.   

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S h o ul d a n y s u bst u d y of t he pr ot oc ol i ncl u de a ge nts ot her t ha n t he T  cells, a n y a d diti o nal 
o ver d ose c o nsi d erati o ns will be pr o vi de d i n t he a p plica ble s u bst u d y s pecific secti o n. 
9. 6.  
P h ar m a c o ki n eti c s  
P har mac o ki netics of T  cells (als o k n o w n as T -cell  e x pa nsi o n or persiste nce ) i n t he 
peri p heral bl o o d will be meas ure d i n t he p artici pa nts t o esta blis h t he relati o ns hi p bet wee n 
T -cell e x pa nsi o n a n d res p o nse t o I P.  Persiste n ce of T cells  is als o m o nit ore d as a 
l o n g-ter m safet y me as ure.   
W h ole bl o o d sa m ples of a p pr o xi matel y 8 m L will be c ollecte d f or meas ure me nt of 
tra ns d uce d cell q ua ntities as descri be d i n t he S O A; sa m ples will be pr ocesse d t o P B M C. 
D N A will be is olate d fr o m t hese P B M Cs t o q ua ntif y t he tra ns d uce d cells usi n g P C R of 
t he Psi tra ns ge n e as des cri be d i n Secti o n  9. 1. 1 2 . Sa m ples ma y b e c ollecte d at a d diti o nal 
ti me p oi nts d uri n g t he st u d y if warra nte d a n d a gree d u p o n bet wee n t he I n vesti gat or a n d 
t he S p o ns or. I nstr u cti o ns f or t he c ollecti o n a n d ha n dli n g of bi olo gi cal sa m pl es will be 
pr o vi de d b y t he S p o ns or. T he act ual d ate a n d ti me ( 2 4 -h o ur cl oc k ti me) of eac h sa m ple 
will be rec or de d.  
T he f oll o wi n g P K p ara m eters will be c o m p ute d, as data per mit:  
•  C ma x: ma xi m u m  c o nce ntrati o n/ T -cell e x pa nsi o n  
•  T ma x , ti me of C ma x  
•  A U C( 0 -t), area u n d er  t he c o nce ntr ati o n/T -cell e x pa nsi o n ti me c ur ve fr o m 0 t o 
ti me t. 
 
Sa m ples c ollecte d f or a n al yses of tra ns d u ce d T  C ells i n bl o o d ma y als o be use d t o 
e val uate safet y or effic ac y as p ects t hat ma y arise d uri n g or after t he st u d y.  
9. 7.  
P h ar m a c o d y n a mi c s  
Ser u m c yt o ki ne l e vels a n d ot her 
 m eas ure d f or researc h p ur p oses (see 
Secti o n  9. 1 0 ) ma y b e e v al uate d f or p har mac o d y n a mic relati o ns hi ps wit h i n vesti gati o nal 
a ge nt a d mi nistrati o n.   
9. 8.  
G e n eti c s  
Ge netics r esearc h ma y b e c o n d ucte d o n a ge n etics bl o o d sa m ple, plas ma, a n d o n t u m or 
sa mples c ollecte d i n t he st u d y  as i n dicat e d i n Secti o n 9. 1 0 . C o nse nt f or Le u ka p heresis 
a n d Treat me nt e nc o m passes c o nse nt f or ge netics researc h.  
See Sec ti o n 1 2. 5  f or I nf or mati o n re gar di n g ge neti c researc h. Details o n pr ocesses f or 
c ollecti o n a n d s hi p me nt a n d destr ucti o n of t hes e sa m ples ca n be f o u n d i n t he St u d y 
refere nce ma n ual ( S R M) or La b orat or y Ma n ual. 
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9. 9.  
I m m u n o g e ni cit y A s s e s s m e nt s 
Ser u m sa m ples f or deter mi nati o n of a nti b o dies a gai nst  N Y -E S O -1  s pecific (c 2 5 9) T  cells 
will be ta ke n fr o m all partici pa nts f or a nti -dr u g a nti b o d y ( A D A) testi n g.   
Ser u m sa m ples will be teste d f or a nti b o dies a gai nst N Y -E S O -1  (c 2 5 9) specific T  cells 
usi n g a v ali date d assa y a n d a tiere d -t esti n g sc h e m e (e. g., S cree ni n g, c o nfir mati o n, a n d 
titer assa ys). Briefl y, all sa m ples will be teste d i n a S cree ni n g ass a y t o i de ntif y p ote ntial 
p ositi ves. Ne xt, all p ote ntiall y p ositi ve sa m ples will be teste d i n a c o nfir mati o n assa y t o 
deter mi ne t he s pecificit y of t he res p o nse. Fi nall y, titer val ues will be deter mi ne d f or all 
c o nfir me d p ositi ve sa m pl es. F or eac h p artici pa nt, i m m u n o ge nic it y res ults (e. g., p ositi ve 
or ne gati ve) a n d titer val ues will be re p orte d. Ot her a nal ys es (e. g., n e utrali zi n g a nti b o d y 
assa y) ma y be perf or me d t o f urt her c h aracterize t h e a nti b o dies, if necessar y.  
All sa m ples c ollecte d f or detecti o n of a nti b o dies t o st u d y i nter ve nti o n(s) m a y als o be 
e val uate d t o e n a ble i nter pretati o n of t he a nti b o d y data.  
C CI

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C CI

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
Pr ot o c ol A m d 0 4  
 
6 2  
C or e  
 
C CI

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
Pr ot o c ol A m d 0 4  
 
6 3  
C or e  
 
9. 1 1.  
R e q u e st f or A ut o p s y i n c a s e of D e at h F oll o wi n g 
A d mi ni str ati o n of G e n e Tr a n sf er A g e nt s  
I n acc or da n ce wit h t he F D A g ui d a nce [F D A , 2 0 2 0a], a ut o psies will be re q ueste d of t he 
fa milies f or all partici p a nts w h o die d ue t o a n a d verse e ve nt p ote ntiall y or directl y rel ate d 
t o t he T-cell i nf usi o n . T o ass ure c o m plia nce, g ui d eli nes f or perf or mi n g a n a ut o ps y are 
pr o vi de d i n t he S R M . 
C CI

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10. 
STATISTICAL CONSIDERATIONS 
Each substudy will be analysed and reported separately. 
The following statistical considerations apply to all substudies. Substudy specific 
considerations are detailed in the individual substudy specific section. 
10.1. 
Statistical Hypotheses 
The primary and secondary objectives of this study are described overall in Section 4 and 
detailed in the individual substudy specific sections.   
Hypotheses for individual substudies are detailed in the substudy specific sections. 
All analyses will be descriptive. 
10.2. 
Sample Size Determination 
Sample size determination is detailed separately for each substudy. 
10.3. 
Data Analysis Considerations 
Data will be listed and summarized according to GSK reporting standards, where 
applicable. Complete details will be documented in the Statistical Analysis Plan (SAP). 
Any deviations from, or additions to, the original analysis plan described in this protocol 
will be documented in the SAP and final study report.  
Other data analysis considerations are detailed in the substudy specific sections. 
10.4. 
Populations for Analyses 
For purposes of analysis, the following populations are defined: 
Population 
Description 
Screened Population 
All participants who signed an ICF to participate in the study. 
Enrolled Population 
All participants who started leukapheresis procedure. 
Intent-To-Treat (ITT) 
Population  
All participants who started leukapheresis procedure. 
Modified ITT (mITT) 
Population  
All participants who received any dose of NY-ESO-1 specific 
T cells. 
Evaluable Population 
All participants who received T--cell infusion and completed at 
least 2 disease assessments after infusion or progressed or died 
or were withdrawn or lost to follow-up from the substudy 
 

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10.5. 
Statistical Analyses 
10.5.1. 
Interim Analyses 
Interim analyses are detailed separately for each substudy. 
10.5.2. 
Key Elements of Analysis Plan 
10.5.2.1. Safety Analyses 
All safety analyses will be performed on the ITT and mITT Populations.  
Endpoint 
Statistical Analysis Methods 
Primary 
DLTs/AEs/SAEs/AESIs will be summarized using frequencies and proportions. 
 
Safety data will be presented in tabular and/or graphical format and summarized 
descriptively by dose and study cohort. No formal analysis will be conducted comparing 
substudies or cohorts. 
All serially collected safety endpoints (e.g., laboratory tests, vital signs, ECGs) will be 
summarized according to the scheduled, nominal visit at which they were collected and 
across all on-treatment time points using a “worst-case” analysis. Complete details of the 
safety analyses will be provided in the SAP. 
Extent of Exposure 
The number of subjects administered study treatment will be summarized. 
Adverse Events 
Adverse events will be coded using the standard MedDRA and grouped by system organ 
class. AEs will be graded by the investigator according to the National Cancer Institute- 
Common Toxicity Criteria for Adverse Events (NCI-CTCAE), version 5.0. 
Events will be summarized by frequency and proportion of total participants, by system 
organ class and preferred term. Separate summaries will be given for all AEs, treatment-
related AEs, SAEs, and AEs leading to discontinuation of study intervention. In addition, 
AEs, if listed in the NCI-CTCAE v5.0, will be summarized by the maximum grade. 
Characteristics (e.g., number of occurrences, action taken, grade) of the AEs of special 
interest (specified in Section 9.2.7) will be summarized separately. 
The incidence of deaths and the primary cause of death will be summarized. 
Dose-limiting toxicities (DLTs, specified in Section 8.2) will be listed for each subject 
and summarized by dose cohort according to International Data Standards Library 
(IDSL) standards. 

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Clinical Laboratory Evaluations 
Haematology and clinical chemistry data will be summarized using frequencies and 
proportions according to National Cancer Institute-Common Toxicity Criteria for 
Adverse Events (NCI-CTCAE), version 5.0. Laboratory test results outside the reference 
ranges that do not have an associated NCI-CTCAE criteria will be summarized using 
proportions. Further details will be provided in the SAP. 
Other Safety Measures 
Data for vital signs, ECGs, and ECHOs will be summarized based on predetermined 
criteria identified to be of potential clinical concern (PCI). Further details will be 
provided in the SAP. 
10.5.2.2. Efficacy Analyses 
Endpoint 
Statistical Analysis Methods 
Secondary 
Overall response rate (ORR), which includes confirmed complete or partial response as 
determined by investigator assessment per RECIST 1.1 will be reported along with 
Clopper-Pearson exact 95% CI. 
Duration of response (DOR) will be summarized using Kaplan-Meier quantile estimates along 
with 2-sided 95% CIs at the time of final analysis, if data warrant.  
Maximum expansion/persistence (Cmax), time to Cmax (Tmax), and area under the time curve 
from zero to time t AUC(0-t) will be presented in tabular or graphical form, if data permit.  
 
Secondary Efficacy Endpoints 
ORR: Overall response rate is defined as the percentage of participants with a confirmed 
CR or a confirmed PR relative to the total number of participants within the analysis 
population at any time per RECIST v1.1 as determined by the local investigators.  
ORR will be reported in the ITT and mITT populations by cohort at the time of primary 
analysis.  
Participants with unknown or missing response will be treated as non-responders, i.e., 
these participants will be included in the denominator when calculating the percentage. 
The number and types of responses, as defined by RECIST v1.1, will be listed and 
summarized separately, as appropriate. 
The observed confirmed ORR will be reported by cohort at the primary analysis along 
with 95% Clopper-Pearson exact confidence interval (CI). 
DOR: Duration of response (DOR) is defined as, in the subset of participants who show a 
confirmed CR or PR as assessed by local investigators, the time from first documented 
evidence of CR or PR until the first documented sign of disease progression or death. 
Duration of response will be summarized descriptively, if data warrant, using Kaplan-
Meier medians and quartiles. Details on rules for censoring will be provided in the SAP. 
Response assessment and DOR will be listed for participants in the mITT population. 

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11. 
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microenvironment to T cell activity: A case for synergistic therapies. A Cancer Cell. 
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Baccala R, Gonzalez-Quintial R, Dummer W, et al. Tumor immunity via homeostatic T 
cell proliferation: mechanistic aspects and clinical perspectives. Springer Semin 
Immunopathol. 2005; 27: 75-85. 
Border EC, Sanderson JP, Weissensteiner T et al. Affinity-enhanced T-cell receptors for 
adoptive T-cell therapy targeting MAGE-A10: strategy for selection of an optimal 
candidate. Oncoimmunology. 2018;8:e1532759.  
D’Angelo SP, Druta M, Liebner DA et al.  Pilot study of NY-ESO-1c259 T cells in 
advanced myxoid/round cell liposarcoma. J Clin Onc 2018a; 36 suppl: 3005-3005. 
D'Angelo SP, Melchiori L, Merchant MS et al. Antitumor Activity Associated with 
Prolonged Persistence of Adoptively Transferred NY-ESO-1 (c259)T Cells in Synovial 
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Davila ML, Riviere I, Wang X et al. Efficacy and toxicity management of 19-28z CAR T 
cell therapy in B cell acute lymphoblastic leukemia. Sci Transl Med. 2014;6:224ra2. 
Dignan FL, Clark A, Amrolia P et al. Diagnosis and Management of acute graft-versus-
host disease. Br J Haematol. 2012;158:30-45. 
Eisenhauer EA, Therasse P, Bogaerts J et al. New response evaluation criteria in solid 
tumours: revised RECIST guideline (version 1.1). Eur J Cancer. 2009;45:228-247. 
EMA Guideline on Follow-Up of Patients Administered with Gene Therapy Medical 
Products (October 2009). 
FDA (2020a). Guidance for Industry, Long Term Follow-Up After Administration Of 
Human Gene Therapy Products (January 2020). 
FDA (2020b) Guidance for Industry, Testing of Retroviral Vector-Based Human Gene 
Therapy Products for Replication Competent Retrovirus During Product Manufacture and 
Patient Follow-up (January 2020). 
FDA Briefing Document – Testing for Replication Competent Retrovirus 
(RCR)/Lentivirus (RCL) in RCR/RCL based gene therapy products (November 2010). 
Fidler C, Klumpp T, Mangan K at al. Spontaneous graft versus host disease occurring in 
a patient with multiple myeloma after autologous stem cell transplant. Am J Hematol. 
2012;87:2-21. 

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Fokke C, van den Berg B, Drenthen J et al. Diagnosis of Guillain-Barre´ syndrome and 
validation of Brighton criteria. Brain. 2014;137:33-43. 
Friends of Cancer Research (FOCR), Designing the Future of Cell Therapies. White 
Paper (2019). 
Garfall A, Kalos M, Furth EE et al. Autologous aGVHD associated with infusion of T 
cells with engineered specificity for NY-ESO-1 and LAGE-1 following high-dose 
melphalan and ASCT in patients with multiple myeloma. Biol Blood Marrow Transplant. 
2013;19:S134. 
Glucksberg H, Storb R, Fefer A et al. Clinical manifestations of graft-versus-host disease 
in human recipients of marrow from HL-A- matched sibling donors. Transplantation. 
1974; 18:295–304. 
Johnson LA, Morgan RA, Dudley ME et al. Gene therapy with human and mouse T-cell 
receptors mediates cancer regression and targets normal tissues expressing cognate 
antigen. Blood. 2009; 114:535-546. 
Kageyama S, Ikeda H, Miyahara Y Imai N et al.  Adoptive transfer of MAGE-A4 T-cell 
receptor gene-transduced lymphocytes in patients with recurrent esophageal cancer. Clin 
Cancer Res. 2015; 21:2268-2277. 
Kaufman RM, Djulbegovic B, Gernsheimer T et al. Platelet transfusion: a clinical 
practice guideline from the AABB. Ann Intern Med. 2015; 162:205-213. 
Kline J, Subbiah S, Lazarus HM et al. Autologous graft-versus-host disease: harnessing 
anti-tumor immunity through impaired self-tolerance. Bone Marrow Transplant. 2008; 
41:505-513. 
Kuball J, Schmitz FW, Voss RH et al. Cooperation of human tumor-reactive CD4(+) and 
CD8(+) T cells after redirection of their specificity by a high-affinity p53A2.1-specific 
TCR. Immunity. 2005; 22:117–129. 
Lee DW, Gardner R, Porter DL et al. Current concepts in the diagnosis and management 
of cytokine release syndrome. Blood. 2014; 124:188-195. 
Lee DW, Santomasso BD, Locke FL et al. ASTCT consensus grading for cytokine 
release syndrome and neurologic toxicity associated with immune effector cells. Biol 
Blood Marrow Transplant. 2019;25:625-638. 
Manilla P, Rebello T, Afable C et al. Regulatory Considerations for Novel Gene Therapy 
Products: A Review of the Process Leading to the First Clinical Lentiviral Vector. 
Human Gene Therapy. 2005; 16:17–25. 
Maus MV, Alexander S, Bishop MR, et al. Society for Immunotherapy of Cancer (SITC) 
clinical practice guideline on immune effector cell-related adverse events. Journal for 
ImmunoTherapy of Cancer 2020;8:e001511. 

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Miller AD. Retrovirus packaging cells. Human Gene Therapy. 1990; 1:5-14. 
Morgan RA, Chinnasamy N, Abate-Daga D, et al. Cancer regression and neurological 
toxicity following anti-MAGE-A3 TCR gene therapy. J Immunother. 2013;36:133-151.  
Morgan RA, Dudley ME, Wunderlich JR, et al. Cancer regression in patients after 
transfer of genetically engineered lymphocytes. Science. 2006; 314:126-129. 
Neelapu SS, Tummala S, Kebriaei P, et al. Chimeric antigen receptor T cell therapy-
assessment and management of toxicities. Nat Rev Clin Oncol. 2018; 15:47-62. 
Pinthus JH, Waks T, Malina V, et al. Adoptive immunotherapy of prostate cancer bone 
lesions using redirected effector lymphocytes. J Clin Invest. 2004; 114:1774-1781. 
Raje N, Berdeja J, Lin Y, et al.  Anti-BCMA CAR T-Cell Therapy bb2121 in Relapsed or 
Refractory Multiple Myeloma. N Engl J Med. 2019; 380:1726-1737.  
Rapoport AP, Stadtmauer EA, Aqui N, et al. Rapid immune recovery and graft-versus-
host disease-like engraftment syndrome following adoptive transfer of costimulated 
autologous T cells. Clin Cancer Res. 2009; 15:4499-4507. 
Robbins PF, Kassim SH, Tran TL, et al. A pilot trial using lymphocytes genetically 
engineered with an NY-ESO-1–Reactive T cell receptor: long-term follow-up and 
correlates with response. Clin Cancer Res. 2015;21:1019-1027. 
Robbins PF, Morgan RA, Feldman SA, et al. Tumor regression in patients with 
metastatic synovial cell sarcoma and melanoma using genetically engineered 
lymphocytes reactive with NY-ESO-1. J Clin Oncol. 2011; 29: 917-924. 
Rohaan MW, Wilgenhof S and Haanen JBHG. Adoptive cellular therapies: the current 
landscape. Virchows Arch. 2019; 474:449-461. 
Seymour L, Bogaerts J, Perrone A, et al.  iRECIST: guidelines for response criteria for 
use in trials testing immunotherapeutics. Lancet Oncology. 2017;18:143-152.  
Smith TJ, Bohlke K, Lyman GH, et al. Recommendations for the use of WBC growth 
factors: American society of clinical oncology clinical practice guideline update. J Clin 
Oncol. 2015; 33:3199-3212. 
Tocilizumab SmPC 2020. https://www.ema.europa.eu/en/documents/product-
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Tocilizumab USPI 2020. https://nctr-crs.fda.gov/fdalabel/services/spl/set-ids/2e5365ff- 
cb2a-4b16-b2c7-e35c6bf2de13/spl-doc?hl=tocilizumab 
Van Koningsveld R, Steyerberg EW, Hughes RA, et al. A clinical prognostic scoring 
system for Guillain-Barré syndrome. Lancet Neurol. 2007 Jul;6(7):589-94. 
Walgaard C, Lingsma HF, Ruts L, et al. Early recognition of poor prognosis in Guillain-
Barre syndrome. Neurology. 2011; 76:968-975. 

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Walgaard C, Lingsma HF, Ruts L, et al. Prediction of Respiratory Insufficiency in 
Guillain-Barre´ Syndrome. Ann Neurol. 2010; 67:781–787. 
Willison HJ, Jacobs BC, van Doom PA. Guillain-Barre Syndrome. Lancet. 2016; 
388:717-727. 
Wolf AM, Wolf D, Steurer M, et al. Increase of regulatory T cells in the peripheral blood 
of cancer patients. Clin Cancer Res. 2003;9:606-12. 

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12. 
SUPPORTING DOCUMENTATION AND OPERATIONAL 
CONSIDERATIONS 
12.1. 
Appendix 1: Regulatory, Ethical, and Study Oversight 
Considerations 
12.1.1. 
Regulatory and Ethical Considerations 
• 
This study will be conducted in accordance with the protocol and with: 
– Consensus ethical principles derived from international guidelines including the 
Declaration of Helsinki and Council for International Organizations of Medical 
Sciences (CIOMS) International Ethical Guidelines 
– Applicable ICH Good Clinical Practice (GCP) Guidelines 
– Applicable laws and regulations 
• 
The protocol, protocol amendments, ICF, Investigator Brochure, and other relevant 
documents (e.g., advertisements) must be submitted to an IRB/IEC by the 
Investigator and reviewed and approved by the IRB/IEC before the study is initiated.  
• 
Any amendments to the protocol will require IEC/IRB approval before 
implementation of changes made to the study design, except for changes necessary to 
eliminate an immediate hazard to study participants.  
• 
The Investigator will be responsible for the following: 
– Providing written summaries of the status of the study to the IRB/IEC annually 
or more frequently in accordance with the requirements, policies, and procedures 
established by the IRB/EC 
– Notifying the IRB/IEC of SAE or other significant safety findings as required by 
IRB/IEC procedures 
– Providing oversight of the conduct of the study at the site and adherence to 
requirements of 21 CFR, ICH guidelines, the IRB/IEC, European regulation 
536/2014 for clinical studies (if applicable), and all other applicable local 
regulations 
 
12.1.2. 
Financial Disclosure 
Investigators and sub-Investigators will provide the sponsor with sufficient, accurate 
financial information as requested to allow the sponsor to submit complete and accurate 
financial certification or disclosure statements to the appropriate regulatory authorities. 
Investigators are responsible for providing information on financial interests during the 
course of the study and for 1 year after completion of the study. 

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12.1.3. 
Informed Consent Process 
• 
The Investigator or his/her representative will explain the nature of the study to the 
participant or his/her legally authorized representative and answer all questions 
regarding the study. 
• 
Participants must be informed that their participation is voluntary. Participants or 
their legally authorized representative will be required to sign a statement of 
informed consent that meets the requirements of 21 CFR 50, local regulations, ICH 
guidelines, Health Insurance Portability and Accountability Act (HIPAA) 
requirements, where applicable, and the IRB/IEC or study center. 
• 
The medical record must include a statement that written informed consent was 
obtained before the participant was enrolled in the study and the date the written 
consent was obtained. The authorized person obtaining the informed consent must 
also sign the ICF. 
• 
Participants must be re-consented to the most current version of the ICF(s) during 
their participation in the study.  
• 
A copy of the ICF(s) must be provided to the participant.  
• 
Participants who are rescreened are required to sign a new ICF. 
 
The ICF may contain a separate section that addresses the use of remaining mandatory 
samples for optional exploratory research in accordance with SOP-GSKF-410. The 
Investigator or authorized designee will explain to each participant the objectives of the 
exploratory research. Participants will be told that they are free to refuse to participate 
and may withdraw their consent at any time and for any reason during the storage period. 
A separate signature will be required to document a participant's agreement to allow any 
remaining specimens to be used for exploratory research. Participants who decline to 
participate will not provide this separate signature. 
12.1.4. 
Data Protection 
• 
Participants will be assigned a unique identifier by the sponsor. Any participant 
records or datasets that are transferred to the sponsor will contain the identifier only; 
participant names or any information which would make the participant identifiable 
will not be transferred.  
• 
The participant must be informed that his/her personal study-related data will be 
used by the sponsor in accordance with local data protection law. The level of 
disclosure must also be explained to the participant.  
• 
The participant must be informed that his/her medical records may be examined by 
Clinical Quality Assurance auditors or other authorized personnel appointed by the 
sponsor, by appropriate IRB/IEC members, and by inspectors from regulatory 
authorities. 
• 
Publication Policy 
• 
The results of this study may be published or presented at scientific meetings. If this 
is foreseen, the Investigator agrees to submit all manuscripts or abstracts to the 

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sponsor before submission. This allows the sponsor to protect proprietary 
information and to provide comments.  
• 
The sponsor will comply with the requirements for publication of study results. In 
accordance with standard editorial and ethical practice, the sponsor will generally 
support publication of multicenter studies only in their entirety and not as individual 
site data. In this case, a coordinating Investigator will be designated by mutual 
agreement. 
• 
Authorship will be determined by mutual agreement and in line with International 
Committee of Medical Journal Editors authorship requirements. 
 
12.1.5. 
Dissemination of Clinical Study Data 
• 
Where required by applicable regulatory requirements, an Investigator signatory will 
be identified for the approval of the clinical study report. The Investigator will be 
provided reasonable access to statistical tables, figures, and relevant reports and will 
have the opportunity to review the complete study results at a GSK site or other 
mutually-agreeable location. 
• 
GSK will also provide the Investigator with the full summary of the study results. 
The Investigator is encouraged to share the summary results with the study 
participants, as appropriate. 
• 
The procedures and timing for public disclosure of the protocol and results summary 
and for development of a manuscript for publication for this study will be in 
accordance with GSK Policy. 
• 
GSK intends to make anonymized participant-level data from this trial available to 
external researchers for scientific analyses or to conduct further research that can 
help advance medical science or improve patient care. This helps ensure the data 
provided by trial participants are used to maximum effect in the creation of 
knowledge and understanding. 
 
12.1.6. 
Data Quality Assurance 
• 
All participant data relating to the study will be recorded on printed or electronic 
CRF unless transmitted to the sponsor or designee electronically (e.g., laboratory 
data). The Investigator is responsible for verifying that data entries are accurate and 
correct by physically or electronically signing the CRF.  
• 
The Investigator must maintain accurate documentation (source data) that supports 
the information entered in the CRF.  
• 
The Investigator must permit study-related monitoring, audits, IRB/IEC review, and 
regulatory agency inspections and provide direct access to source data documents.  
• 
Monitoring details describing strategy (e.g., risk-based initiatives in operations and 
quality such as Risk Management and Mitigation Strategies and Analytical 
Risk-Based Monitoring), methods, responsibilities and requirements, including 

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handling of noncompliance issues and monitoring techniques (central, remote, or 
on-site monitoring) are provided in the Monitoring Plan. 
• 
The sponsor or designee is responsible for the data management of this study 
including quality checking of the data.  
• 
The sponsor assumes accountability for actions delegated to other individuals 
(e.g., Contract Research Organizations). 
• 
Study monitors will perform ongoing source data verification to confirm that data 
entered into the CRF by authorized site personnel are accurate, complete, and 
verifiable from source documents; that the safety and rights of participants are being 
protected; and that the study is being conducted in accordance with the currently 
approved protocol and any other study agreements, ICH GCP, and all applicable 
regulatory requirements.  
• 
Records and documents, including signed ICF, pertaining to the conduct of this study 
must be retained by the Investigator for 30 years from the issue of the final Clinical 
Study Report (CSR)/equivalent summary unless local regulations or institutional 
policies require a longer retention period. No records may be destroyed during the 
retention period without the written approval of the sponsor. No records may be 
transferred to another location or party without written notification to the sponsor.  
 
12.1.7. 
Source Documents 
• 
Source documents provide evidence for the existence of the participant and 
substantiate the integrity of the data collected. Source documents are filed at the 
Investigator’s site. 
• 
Data reported on the CRF or entered in the eCRF that are transcribed from source 
documents must be consistent with the source documents or the discrepancies must 
be explained. The Investigator may need to request previous medical records or 
transfer records, depending on the study. Also, current medical records must be 
available. 
 
12.1.8. 
Study and Site Closure 
GSK or its designee reserves the right to close the study site or terminate the study at any 
time for any reason at the sole discretion of GSK. Study sites will be closed upon study 
completion. A study site is considered closed when all required documents and study 
supplies have been collected and a study-site closure visit has been performed. 
The Investigator may initiate study-site closure at any time, provided there is reasonable 
cause and sufficient notice is given in advance of the intended termination. 
Reasons for the early closure of a study site by the sponsor or Investigator may include 
but are not limited to: 
• 
Failure of the Investigator to comply with the protocol, the requirements of the 
IRB/IEC or local health authorities, the sponsor's procedures, or GCP guidelines 

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• 
Inadequate recruitment of participants by the Investigator 
• 
Discontinuation of further study intervention development. 
 
12.1.9. 
Remote Monitoring and Source Data Verification  
209012 First Trial In Human (FTIH) study requires close, ongoing monitoring of patient 
data to ensure treatments are safe and tolerated by study participants. When onsite 
monitoring is not permissible due to site/local restrictions (such as with epidemic and/or 
pandemic), remote monitoring may be employed that ensures all of the following 
requirements are met: 
• 
Monitoring plan and execution details [remote source data monitoring (rSDV) 
method and scope of activities] are outlined in the Study Monitoring Plan 
• 
Remote monitoring method to be employed as permitted by local regulations, agreed 
upon by study site and approved by IRB/IEC 
• 
Appropriate security systems/provisions are in place to ensure protection of patient 
data and shared information 
• 
Participants sign ICF including disclosure of remote monitoring for 
(redacted/anonymized) patient data with security provisions in place 
 

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12.2. 
Appendix 2: Clinical Laboratory Tests 
• 
The tests detailed in Table 1 will be performed by the local laboratory. 
• 
Protocol-specific requirements for inclusion or exclusion of participants are detailed 
in the substudies. 
• 
Additional tests may be performed at any time during the study as determined 
necessary by the Investigator or required by local regulations. 
• 
Pregnancy testing:  
– Refer to Inclusion Criteria in the substudy specific sections for Screening 
pregnancy criteria. 
– Pregnancy testing (urine or serum as required by local regulations) should be 
conducted at all times indicated in the SOA. 
– Additional serum or urine pregnancy tests may be performed, as determined 
necessary by the Investigator or required by local regulation, to establish the 
absence of pregnancy at any time during the participant’s participation in the 
study. 
 

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Table 1 
Protocol-Required Safety Laboratory Assessments 
Laboratory 
Assessments 
Parameters 
Haematology 
Platelet Count  
RBC Indices: 
• MCV 
• MCH 
• Reticulocytes 
WBC count with 
Differential: 
• Neutrophils 
• Lymphocytes 
• Monocytes 
• Eosinophils 
• Basophils 
RBC Count 
Hemoglobin 
Hematocrit 
Flow cytometry 
CD3/CD4/CD8 
 
 
 
Clinical Chemistrya 
BUNb 
Potassium 
AST (SGOT) 
Total & direct bilirubin 
Creatinine 
Sodium 
ALT (SGPT) 
Total protein 
Glucose [nonfasting] 
Calcium 
Alkaline phosphatase Chloride 
Albumin 
Phosphorus 
LDH 
Urea 
Magnesium 
Bicarbonate 
 
Coagulation 
INR, PT, and aPTT, Fibrinogen 
 
 
 
Routine Urinalysis 
• Specific gravity 
• pH, glucose, protein, blood, ketones, bilirubin, urobilinogen, nitrite, leukocyte esterase by 
dipstick 
• Microscopic examination (if blood or protein is abnormal) 
Other Tests 
• CMV IgG and PCR 
• TSH with free T4 
• CRP 
• Uric acid 
• GFR or 24 hour Urine 
• Follicle-stimulating hormone (as needed in women of non-childbearing potential only) 
• Highly sensitive serum or urine human chorionic gonadotropin (hCG) pregnancy test (as 
needed for women of childbearing potential)b 
• HIV, HBV, HCV, HTLV, EBV, and syphilis (spirochete bacterium). 
• Ferritin 
• Serum troponin 
• NT-proBNP / BNP 
a. 
Details of liver chemistry monitoring criteria and required actions and follow-up assessments after liver monitoring 
event are given in Section 8.2.1. All events of ALT 3 × ULN and bilirubin 2 × ULN (>35% direct bilirubin) or ALT 
3 × ULN and INR >1.5, if INR measured, which may indicate severe liver injury (possible Hy’s Law), must be 
reported as an SAE. 
b. 
Either BUN or UREA tests are acceptable. 
c. 
Local urine testing will be standard for the protocol unless serum testing is required by local regulation or IRB/IEC. 
Note: All study-required laboratory safety assessments will be performed by a local laboratory with the exception of 
alleles HLA-A*02:01, A*02:05, or A*02:06 and NY-ESO-1/LAGE-1a expression. The results of the HLA and NY-ESO-
1/LAGE-1a tests must be entered into the eCRF. 
ALT = alanine aminotransferase; aPTT = activated partial thromboplastin time; AST = Aspartate aminotransferase; 
BNB = B-type natriuretic peptide; BUN = blood urea nitrogen; CMV = cytomegalovirus; CRP = C-reactive protein; EBV 
= Epstein Barr virus; GFR = glomerular filtration rate; HBV = hepatitis B virus; HCV = hepatitis C virus; HIV = human 
immunodeficiency virus; HTLV = human T-lymphotropic virus; INR = international normalized ratio; LDH = lactate 
dehydrogenase; MCH = mean corpuscular hemoglobin; MCV = mean corpuscular volume; NT-proBNP = N-terminal 
group pro-BNP; PCR = polymerase chain reaction; PT = prothrombin time; RBC = red blood cells; SGOT = serum 
glutamic oxaloacetic transaminase; SGPT = serum glutamic pyruvic transaminase; T4 = thyroxine; TSH = thyroid 
stimulating hormone; WBC = white blood cells. 
 

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12.3. 
Appendix 3: Adverse Events: Definitions and Procedures for 
Recording, Evaluating, Follow-up, and Reporting 
12.3.1. 
Definition of AE 
AE Definition 
• 
An AE is any untoward medical occurrence in a clinical study participant, 
temporally associated with the use of a study intervention, whether or not 
considered related to the study intervention. 
• 
NOTE: An AE can therefore be any unfavorable and unintended sign (including 
an abnormal laboratory finding), symptom, or disease (new or exacerbated) 
temporally associated with the use of a study intervention. 
 
Events Meeting the AE Definition 
• 
Any abnormal laboratory test results (hematology, clinical chemistry, or 
urinalysis) or other safety assessments (e.g., ECG, radiological scans, vital signs 
measurements), including those that worsen from Baseline, considered clinically 
significant in the medical and scientific judgment of the investigator (i.e., not 
related to progression of underlying disease). 
• 
Exacerbation of a chronic or intermittent pre-existing condition including either an 
increase in frequency and/or intensity of the condition. 
• 
New conditions detected or diagnosed after study intervention administration even 
though it may have been present before the start of the study. 
• 
Signs, symptoms, or the clinical sequelae of a suspected drug-drug interaction. 
• 
Signs, symptoms, or the clinical sequelae of a suspected overdose of either study 
intervention or a concomitant medication. Overdose per se will not be reported as 
an AE/SAE unless it is an intentional overdose taken with possible suicidal/self-
harming intent. Such overdoses should be reported regardless of sequelae. 
• 
"Lack of efficacy" or "failure of expected pharmacological action" per se will not 
be reported as an AE or SAE. Such instances will be captured in the efficacy 
assessments. However, the signs, symptoms, and/or clinical sequelae resulting 
from lack of efficacy will be reported as AE or SAE if they fulfil the definition of 
an AE or SAE.  
 
Events NOT Meeting the AE Definition  
• 
Any clinically significant abnormal laboratory findings or other abnormal safety 
assessments which are associated with the underlying disease, unless judged by 
the investigator to be more severe than expected for the participant’s condition. 

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• 
The disease/disorder being studied or expected progression, signs, or symptoms of 
the disease/disorder being studied, unless more severe than expected for the 
participant’s condition. 
• 
Medical or surgical procedure (e.g., endoscopy, appendectomy): the condition that 
leads to the procedure is the AE. 
• 
Situations in which an untoward medical occurrence did not occur (social and/or 
convenience admission to a hospital). 
• 
Anticipated day-to-day fluctuations of pre-existing disease(s) or condition(s) 
present or detected at the start of the study that do not worsen. 
 
12.3.2. 
Definition of SAE 
If an event is not an AE per definition above, then it cannot be an SAE even if serious 
conditions are met. 
A SAE is defined as any untoward medical occurrence that, at any dose: 
Results in death 
Is life-threatening 
The term 'life-threatening' in the definition of 'serious' refers to an event in which the 
participant was at risk of death at the time of the event. It does not refer to an event, 
which hypothetically might have caused death, if it were more severe. 
Requires inpatient hospitalization or prolongation of existing hospitalization 
In general, hospitalization signifies that the participant has been detained (usually 
involving at least an overnight stay) at the hospital or emergency ward for observation 
and/or treatment that would not have been appropriate in the physician’s office or 
outpatient setting. Complications that occur during hospitalization are AE. If a 
complication prolongs hospitalization or fulfils any other serious criteria, the event is 
serious. When in doubt as to whether “hospitalization” occurred or was necessary, the 
AE should be considered serious. 
Hospitalization for elective treatment of a pre-existing condition that did not worsen 
from Baseline is not considered an AE. 
Results in persistent disability/incapacity 
• The term disability means a substantial disruption of a person’s ability to conduct 
normal life functions. 
• This definition is not intended to include experiences of relatively minor medical 
significance such as uncomplicated headache, nausea, vomiting, diarrhea, 
influenza, and accidental trauma (e.g., sprained ankle) which may interfere with or 
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Is a congenital anomaly/birth defect 
Other situations: 
• Medical or scientific judgment should be exercised in deciding whether SAE 
reporting is appropriate in other situations such as important medical events that 
may not be immediately life-threatening or result in death or hospitalization but 
may jeopardize the participant or may require medical or surgical intervention to 
prevent one of the other outcomes listed in the above definition. These events 
should usually be considered serious. 
Examples of such events include invasive or malignant cancers, intensive treatment 
in an emergency room or at home for allergic bronchospasm, blood dyscrasias or 
convulsions that do not result in hospitalization, or development of drug 
dependency or drug abuse. 
• Grade ≥3 CRS, ICANS, or GVHD, all cases of aplastic anemia, and all cases of 
GBS or other demyelinating neuropathies must be reported within 24 hours as 
SAEs. 
 
12.3.3. 
Definition of Cardiovascular Events 
Cardiovascular Events (CV) Definition: 
Investigators will be required to fill out the specific CV event page of the CRF for the 
following AEs and SAEs: 
• 
Myocardial infarction/unstable angina 
• 
Congestive heart failure 
• 
Arrhythmias 
• 
Valvulopathy 
• 
Pulmonary hypertension 
• 
Cerebrovascular events/stroke and transient ischemic attack 
• 
Peripheral arterial thromboembolism 
• 
Deep venous thrombosis/pulmonary embolism 
• 
Revascularization 
 
12.3.4. 
Recording and Follow-Up of AE and SAE 
AE and SAE Recording 
• When an AE/SAE occurs, it is the responsibility of the Investigator to review all 
documentation (e.g., hospital progress notes, laboratory, and diagnostics reports) 
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• The Investigator will then record all relevant AE/SAE information in the CRF. 
• It is not acceptable for the Investigator to send photocopies of the participant’s 
medical records to GSK in lieu of completion of the GSK AE/SAE CRF page. 
• There may be instances when copies of medical records for certain cases are 
requested by GSK. In this case, all participant identifiers, with the exception of the 
participant number, will be redacted on the copies of the medical records before 
submission to GSK. 
• The Investigator will attempt to establish a diagnosis of the event based on signs, 
symptoms, and/or other clinical information. Whenever possible, the diagnosis (not 
the individual signs/symptoms) will be documented as the AE/SAE. 
Assessment of Intensity 
The Investigator will make an assessment of intensity for each AE and SAE reported 
during the study and will assign a grade according to the National Cancer Institute 
Common Terminology Criteria for Adverse Events (NCI-CTCAE), v5.0, except for the 
following: 
• CRS grading will be based on [Lee, 2019] and include Fever, Hypoxia and 
Hypotension. Organ toxicities associated with CRS will be graded according to 
NCI-CTCAE v5.0 and do not influence CRS grading. 
• ICANS grading will be based on [Lee, 2019]. Organ toxicities associated with 
ICANS will be graded according to NCI-CTCAE v5.0 and do not influence ICANS 
grading. 
 
Assessment of Causality 
• The Investigator is obligated to assess the relationship between study intervention 
and each occurrence of each AE/SAE. 
• A "reasonable possibility" of a relationship conveys that there are facts, evidence, 
and/or arguments to suggest a causal relationship, rather than a relationship cannot 
be ruled out. 
• The Investigator will use clinical judgment to determine the relationship. 
• Alternative causes, such as underlying disease(s), concomitant therapy, and other 
risk factors, as well as the temporal relationship of the event to study intervention 
administration will be considered and investigated. 
• The Investigator will also consult the Investigator’s Brochure (IB) and/or Product 
Information, for marketed products, in his/her assessment. 
• For each AE/SAE, the Investigator must document in the medical notes that he/she 
has reviewed the AE/SAE and has provided an assessment of causality. 
• There may be situations in which an SAE has occurred, and the Investigator has 
minimal information to include in the initial report to GSK. However, it is very 

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important that the Investigator always make an assessment of causality for 
every event before the initial transmission of the SAE data to GSK. 
• The Investigator may change his/her opinion of causality in light of follow-up 
information and send an SAE follow-up report with the updated causality 
assessment. 
• 
The causality assessment is one of the criteria used when determining regulatory 
reporting requirements. 
 
Follow-up of AE and SAE 
• The Investigator is obligated to perform or arrange for the conduct of supplemental 
measurements and/or evaluations as medically indicated or as requested by GSK to 
elucidate the nature and/or causality of the AE or SAE as fully as possible. This 
may include additional laboratory tests or investigations, histopathological 
examinations, or consultation with other health care professionals. 
• If a participant dies during participation in the study or during a recognized 
follow-up period, the Investigator will provide GSK with a copy of any 
post-mortem findings including histopathology. 
• New or updated information will be recorded in the originally completed CRF. 
• 
The Investigator will submit any updated SAE data to GSK within 24 hours of 
receipt of the information. 
 
12.3.5. 
Reporting of SAE to GSK 
SAE Reporting to GSK via Electronic Data Collection Tool 
• The primary mechanism for reporting SAE to GSK will be the electronic data 
collection tool. 
• If the electronic system is unavailable, then the site will use the paper SAE data 
collection tool (see next section) in order to report the event within 24 hours. 
• The site will enter the SAE data into the electronic system as soon as it becomes 
available. 
• After the study is completed at a given site, the electronic data collection tool will 
be taken off-line to prevent the entry of new data or changes to existing data. 
• If a site receives a report of a new SAE from a study participant or receives updated 
data on a previously reported SAE after the electronic data collection tool has been 
taken off-line, then the site can report this information on a paper SAE form (see 
next section) or to the medical monitor/SAE coordinator by telephone. 
• 
Contacts for SAE reporting can be found in the SRM. 
 
 

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SAE Reporting to GSK via Paper CRF 
• Facsimile transmission of the SAE paper CRF is the preferred method to transmit 
this information to the medical monitor/SAE coordinator. 
• In rare circumstances and in the absence of facsimile equipment, notification by 
telephone is acceptable with a copy of the SAE data collection tool sent by 
overnight mail or courier service. 
• Initial notification via telephone or email does not replace the need for the 
Investigator to complete and sign the SAE CRF pages within the designated 
reporting time frames. 
• Contacts for SAE reporting can be found in the SRM. 
 
 

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12.4. 
Appendix 4: Contraceptive Guidance and Collection of 
Pregnancy Information 
12.4.1. 
Definitions 
Woman of Childbearing Potential (WOCBP) 
A woman is considered fertile following menarche and until becoming post-menopausal 
unless permanently sterile (see below). 
If fertility is unclear (e.g., amenorrhea in adolescents or athletes) and a menstrual cycle 
cannot be confirmed before first dose of study intervention, additional evaluation should 
be considered. 
Women in the following categories are not considered WOCBP 
• 
Premenarchal 
• 
Premenopausal female with 1 of the following: 
– Documented hysterectomy 
– Documented bilateral salpingectomy 
– Documented bilateral oophorectomy 
 
For individuals with permanent infertility due to an alternate medical cause other than the 
above, (e.g., mullerian agenesis, androgen insensitivity), Investigator discretion should be 
applied to determining study entry. 
Note: Documentation can come from the site personnel’s: review of the participant’s 
medical records, medical examination, or medical history interview. 
• 
Postmenopausal female 
– A postmenopausal state is defined as no menses for 12 months without an 
alternative medical cause.  
– A high follicle stimulating hormone (FSH) level in the postmenopausal range (as 
per laboratory parameters for postmenopausal range) may be used to confirm a 
postmenopausal state in women not using hormonal contraception or hormonal 
replacement therapy (HRT) when postmenopausal status is in doubt. However, in 
the absence of 12 months of amenorrhea, confirmation with more than one FSH 
measurement is required. 
– Females on HRT and whose menopausal status is in doubt will be required to use 
one of the non-estrogen hormonal highly effective contraception methods if they 
wish to continue their HRT during the study. Otherwise, they must discontinue 
HRT to allow confirmation of postmenopausal status before study enrollment. 
 

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12.4.2. 
Contraception Guidance 
Participants should be informed that treatment with fludarabine, cyclophosphamide 
and/or genetically engineered T cells may have adverse effects on a fetus in utero. 
Furthermore, while it is not known if such treatment has transient adverse effects on the 
composition of sperm, the investigator should advise fertile male participants to consider 
collecting and storing viable sperm prior to undergoing lymphodepletion, given that 
cyclophosphamide may result in partial (oligospermia) or total (azoospermia) sterility. 
Participants who are WOCBP must use a barrier method (male condom) and should 
comply with one of the methods in the table below.  Male participants should use a male 
condom and should also be advised of the benefit for a female partner to use one of the 
methods in the table below. 
CONTRACEPTIVES a ALLOWED DURING THE STUDY INCLUDE: 
Highly Effective Methods That Have Low User Dependency Failure rate of <1% per year when used consistently 
and correctly. 
Implantable progestogen-only hormone contraception associated with inhibition of ovulation b 
Intrauterine device (IUD) 
Intrauterine hormone-releasing system (IUS) b 
Bilateral tubal occlusion 
Vasectomized partner 
Note: Vasectomized partner is a highly effective contraceptive method provided that the partner is the sole sexual 
partner of the woman of childbearing potential and the absence of sperm has been confirmed. If not, an 
additional highly effective method of contraception should be used. Spermatogenesis cycle is approximately 
90 days. 
Highly Effective Methods That Are User Dependent Failure rate of <1% per year when used consistently and 
correctly. 
Combined (estrogen- and progestogen-containing) hormonal contraception associated with inhibition of ovulationb 
oral 
intravaginal 
transdermal 
injectable 
Progestogen-only hormone contraception associated with inhibition of ovulation b 
oral 
injectable 
Sexual abstinence 
Note: Sexual abstinence is considered a highly effective method only if defined as refraining from 
heterosexual intercourse during the entire period of risk associated with the study intervention. Periodic 
abstinence (calendar, sympto-thermal, post-ovulation methods), withdrawal (coitus interruptus), 
spermicides only, and lactational amenorrhoea method (LAM) are not acceptable methods of 
contraception. 
a. 
Contraceptive use by men or women should be consistent with local regulations regarding the use of 
contraceptive methods for those participating in clinical studies. 
b. 
Male condoms must be used in addition to hormonal contraception. If locally required, in accordance with Clinical 
Trial Facilitation Group (CTFG) guidelines, acceptable contraceptive methods are limited to those which inhibit 
ovulation as the primary mode of action. 
Note: Male condom and female condom should not be used together (due to risk of failure with friction). 
 

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Participants should be informed that taking the study medication may involve unknown 
risks to the fetus (unborn baby) if pregnancy were to occur during the study.  
The IB and Informed consent also contain language describing the risks and 
contraceptive guidelines described above. 
Contraception is mandated from the start of study intervention and for the period defined 
in Table 2, based on the study treatments received 
Table 2 
Time Periods for Contraception Usage 
Study Intervention Received 
Contraception to continue from start of study intervention through 
longest of all intervals defined below based on all treatments received  
Fludarabine 
6 months after last dose of fludarabine 
Cyclophosphamide 
Time after last dose of cyclophosphamide: 
Females – 12 months 
Males – 6 months 
NY-ESO-1 specific T cell infusion 
A minimum of 12 months after NY-ESO-1 specific T-cell infusion. 
In the event that there is still evidence of persistence of gene modified cells 
in the participant’s blood beyond 12 months, contraception to continue until 
notification by Sponsor that NY-ESO-1 specific T cells  are not detected in 
blood for 2 consecutive times. 
 
The Sponsor will notify the site once the participants’ persistence is below the level of 
detection for 2 consecutive times.  
12.4.3. 
Collection of Pregnancy Information: 
Male participants with partners who are or become pregnant 
• 
Investigator will attempt to collect pregnancy information on any male participant’s 
female partner who is or becomes pregnant while the male participant is participating 
in this study. This applies only to male participants who receive study intervention. 
• 
After obtaining the necessary signed informed consent from the pregnant female 
partner directly, the Investigator will record pregnancy information on the 
appropriate form and submit it to GSK within 24 hours of learning of the partner’s 
pregnancy.  
• 
The female partner will also be followed to determine the outcome of the pregnancy. 
Information on the status of the mother and child will be forwarded to GSK. 
• 
Generally, follow-up will be no longer than 6 to 8 weeks following the estimated 
delivery date. Any termination of the pregnancy will be reported regardless of fetal 
status (presence or absence of anomalies) or indication for procedure.  
 
Female participants who become pregnant 
• 
Investigator will collect pregnancy information on any female participant, who 
becomes pregnant while participating in this study.  

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• 
Information will be recorded on the appropriate form and submitted to GSK within 
24 hours of learning of a participant's pregnancy.  
• 
Participant will be followed to determine the outcome of the pregnancy. The 
Investigator will collect follow up information on participant and neonate, which will 
be forwarded to GSK Generally, follow-up will not be required for longer than 6 to 
8 weeks beyond the estimated delivery date.  
• 
Any termination of pregnancy will be reported, regardless of fetal status (presence or 
absence of anomalies) or indication for procedure.  
• 
While pregnancy itself is not considered to be an AE or SAE, any pregnancy 
complication or elective termination of a pregnancy will be reported as an AE or 
SAE.  
• 
A spontaneous abortion is always considered to be an SAE and will be reported as 
such.  
• 
Any SAE occurring as a result of a post-study pregnancy which is considered 
reasonably related to the study intervention by the Investigator, will be reported to 
GSK as described in Section 12.3. While the Investigator is not obligated to actively 
seek this information in former study participants, he or she may learn of an SAE 
through spontaneous reporting.  
 
Any female participant who becomes pregnant while participating will discontinue study 
intervention if possible. 

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12.5. 
 Appendix 5: Genetics 
USE/ANALYSIS OF DNA 
• 
Genetic variation may impact a participant’s response to study intervention, 
susceptibility, severity and progression of disease. Variable response to study 
intervention may be due to genetic determinants that impact drug absorption, 
distribution, metabolism, and excretion; mechanism of action of the drug; disease 
etiology; and/or molecular subtype of the disease being treated. Therefore, DNA 
analysis will be conducted on blood, plasma, and tumor biopsies per local 
regulations and IRB/IEC. 
• 
DNA samples will be used for research related to NY-ESO-1 specific TCR 
engineered T cells or cancer indication(s) under study and related diseases. They 
may also be used to develop tests/assays including diagnostic tests related to 
NY-ESO-1 specific TCR engineered T cells and cancer indications under study. 
Genetic research may consist of the analysis of one or more candidate genes or the 
analysis of genetic markers throughout the genome or analysis of the entire genome, 
as appropriate. 
• 
The samples may be analyzed as part of a multi-study assessment of genetic factors 
involved in the response to NY-ESO-1 specific TCR engineered T cells. The results 
of genetic analyses may be reported in the clinical study report or in a separate study 
summary. 
• 
The sponsor will store the DNA samples in a secure storage space with adequate 
measures to protect confidentiality.  
• 
The samples will be retained while research on NY-ESO-1 specific TCR engineered 
T cells (or study interventions of this class) or indications under study continues but 
no longer than 15 years after the last participant last visit or other period as per local 
requirements. 
 
12.5.1. 
Companion Diagnostics 
US Food and Drug Administration states that an in vitro companion diagnostic device 
(IVD) could be essential for the safe and effective use of a corresponding therapeutic 
product to: 
• 
Identify participants who are most likely to benefit from a particular therapeutic 
product; 
• 
Identify participants likely to be at increased risk for serious adverse reactions as a 
result of treatment with a particular therapeutic product; 
• 
Monitor response to treatment for the purpose of adjusting treatment (e.g., schedule, 
dose, discontinuation) to achieve improved safety or effectiveness; 
• 
Identify participants in the population for whom the therapeutic product has been 
adequately studied, and found safe and effective, i.e., there is insufficient 
information about the safety and effectiveness of the therapeutic product in any other 
population. 

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Global regulatory requirements for IVD companion diagnostic tests are evolving. If a 
DNA-based IVD companion diagnostic device might be needed to identify participants 
who are appropriate for the GSK medicinal product(s) under investigation in this 
protocol, then GSK should collect and retain DNA samples from participants who carry 
the genetic variant of interest as well as DNA samples from participants who do not carry 
the genetic variants of interest to validate the performance of the companion diagnostic. 
Therefore, where local regulations and IRB/IEC allow, a sample will be collected for 
DNA analysis. Any IVD companion diagnostic research objectives should be described 
in participant ICFs. 

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12.6. 
Appendix 6: Guidelines for Assessment of Disease, Disease 
Progression, and Response Criteria 
12.6.1. 
RECIST v1.1 Assessment Guidelines 
Please note the following: 
• 
The same diagnostic method, including use of contrast when applicable, must be 
used throughout the study to evaluate a lesion. Contrast agents must be used in 
accordance with the Image Acquisition Guidelines. 
• 
All measurements should be taken and recorded in millimeters (mm), using a ruler or 
calipers. 
• 
Ultrasound is not a suitable modality of disease assessment. If new lesions are 
identified by ultrasound, confirmation by CT or MRI is required. 
• 
Fluorodeoxyglucose (FDG)-PET is generally not suitable for ongoing assessments of 
disease. However, FDG-PET can be useful in confirming new sites of disease where 
a positive FDG-PET scans correlates with the new site of disease present on CT/MRI 
or when a Baseline FDG-PET was previously negative for the site of the new lesion. 
FDG-PET may also be used in lieu of a standard bone scan providing coverage 
allows interrogation of all likely sites of bone disease and FDG-PET is performed at 
all assessments. 
• 
If PET/CT is performed then the CT component can only be used for standard 
response assessments if performed to diagnostic quality, which includes the required 
anatomical coverage and prescribed use of contrast. The method of assessment 
should be noted as CT on the CRF. 
 
Clinical Examination: Clinically detected lesions will only be considered measurable 
when they are superficial (e.g., skin nodules). In the case of skin lesions, documentation 
by color photography, including a ruler/callipers to measure the size of the lesion, is 
required [Eisenhauer, 2009].  
CT and MRI: Contrast enhanced CT with 5 mm contiguous slices is recommended. 
Minimum size of a measurable Baseline lesion should be twice the slice thickness, with a 
minimum lesion size of 10 mm when the slice thickness is 5 mm. MRI is acceptable, but 
when used, the technical specification of the scanning sequences should be optimized for 
the evaluation of the type and site of disease and lesions must be measured in the same 
anatomic plane by use of the same imaging examinations. Whenever possible the same 
scanner should be used [Eisenhauer, 2009]. 
X-ray: In general, X-ray should not be used for target lesion measurements owing to 
poor lesion definition. Lesions on chest X-ray may be considered measurable if they are 
clearly defined and surrounded by aerated lung; however, chest CT is preferred over 
chest X-ray [Eisenhauer, 2009]. 
Brain Scan:  If brain scans are required, then contrast-enhanced MRI is preferable to 
contrast enhanced CT. 

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Bone Scan (typically bone scintigraphy):  If a bone scan is performed and a new 
lesion(s) is equivocal, then correlative imaging (i.e., X-ray, CT, or MRI) is required to 
demonstrate malignant characteristics of the lesion(s).  
Note:  PET [FDG or fluoride] may be used in lieu of a standard bone scan providing 
coverage allows interrogation of all likely sites of bone disease and PET is performed at 
all assessments. 
Guidelines for Evaluation of Disease 
Measurable and Non-measurable Definitions 
Measurable lesion: 
A non-nodal lesion that can be accurately measured in at least one dimension (longest 
dimension) of the following: 
• 
10 mm with MRI or CT when the scan slice thickness is no greater than 5 mm. If 
the slice thickness is greater than 5 mm, the minimum size of a measurable lesion 
must be at least double the slice thickness (e.g., if the slice thickness is 10 mm, a 
measurable lesion must be 20 mm). 
• 
10 mm caliper/ruler measurement by clinical exam or medical photography.  
• 
20 mm by chest x-ray. 
• 
Additionally, lymph nodes can be considered pathologically enlarged and 
measurable if 15 mm in the short axis when assessed by CT or MRI (slice thickness 
recommended to be no more than 5 mm). At Baseline and follow-up, only the short 
axis will be measured [Eisenhauer, 2009]. 
 
Non-measurable lesion:  
All other lesions including lesions too small to be considered measurable (longest 
diameter <10 mm or pathological lymph nodes with ≥10 mm and <15 mm short axis) as 
well as truly non-measurable lesions, which include: leptomeningeal disease, ascites, 
pleural or pericardial effusions, inflammatory breast disease, lymphangitic involvement 
of the skin or lung, abdominal masses/abdominal organomegaly identified by physical 
exam that is not measurable by reproducible imaging techniques [Eisenhauer, 2009]. 
Measurable disease:  
The presence of at least one measurable lesion. Palpable lesions that are not measurable 
by radiologic or photographic evaluations may not be utilized as the only measurable 
lesion. 
Non-measurable only disease:  
The presence of only non-measurable lesions.  
Note: non-measurable only disease is not allowed per protocol. 
 

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Baseline Definition of Target Lesions (TLs) and Non-Target Lesions (NTLs) 
Measurable lesions (see definition above) up to a maximum of 2 lesions per organ and 
5 lesions in total, representative of all involved organs, should be identified as target 
lesions, and recorded and measured at baseline. These lesions should be selected based 
on their size (measurable diameters) and their suitability for accurate repeated 
measurements.  
All other lesions or sites of disease should be recorded as non-target lesions at 
screening/baseline and should be followed qualitatively. Non-target lesions will be 
grouped by organ. Measurements are not required, rather the status of non-target lesions 
should be determined as “present,” “absent,” or in rare cases “unequivocal progression” 
during follow up. 
Additional guidance for selection of target and non-target lesions at screening/baseline: 
• 
For selection of target lesions, paired organs such as the lungs or kidneys are each 
considered together as a single organ, and no more than 2 lesions should be recorded 
as target lesions within the pair. The skin and all lymph nodes are each considered a 
single organ for purposes of target lesion selection. 
• 
Lymph nodes of pathological size with short-axis diameters of 10 mm to <15 mm 
should be recorded as non-target lesions. 
• 
Lesions identified by clinical assessment (superficial skin lesions) only should be 
followed as non-target lesions when other suitable target lesions are available. 
• 
Cystic lesions thought to represent cystic metastases should not be selected as target 
lesions when other suitable target lesions are available. 
• 
Lesions that have been previously irradiated and have since progressed may be 
considered as target lesions. 
• 
Lesions which are biopsied at baseline should be considered non-target lesions. If 
there is only 1 measurable lesion and non-target lesions are absent or not accessible, 
Medical Monitor (or designee) must be consulted and biopsy may be performed if 
there is no anticipated risk of interfering with measurement of single lesion. 
• 
Lytic bone lesions or mixed lytic-blastic lesions with identifiable soft tissue 
components that can be evaluated by CT or MRI can be considered measurable (soft 
tissue component).  Bone scans, FDG-PET scans or X-rays are not considered 
adequate imaging techniques to measure bone lesions. 
 
Response Criteria 
Evaluation of target lesions: 
Definitions for assessment of response for target lesion(s) are as follows: 
• 
Complete Response (CR):  Disappearance of all target lesions. Any pathological 
lymph nodes must be <10 mm in the short axis. 
• 
Partial Response (PR):  At least a 30% decrease in the sum of the diameters of target 
lesions, taking as a reference, the Baseline sum of the diameters (e.g. percent change 
from Baseline). 

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• 
Stable Disease (SD):  Neither sufficient shrinkage to qualify for PR nor sufficient 
increase to qualify for progressive disease. 
• 
Progressive Disease (PD): At least a 20% increase in the sum of the diameters of 
target lesions, taking as a reference, the smallest sum of diameters recorded since the 
treatment started (e.g. percent change from nadir, where nadir is defined as the 
smallest sum of diameters recorded since treatment start). In addition, the sum must 
have an absolute increase from nadir of 5 mm. 
• 
Not Applicable (NA): No target lesions at Baseline. 
• 
Not Evaluable (NE): Cannot be classified by one of the five preceding definitions. 
 
Note: 
• 
If lymph nodes are documented as target lesions the short axis is added into the sum 
of the diameters (e.g. sum of diameters is the sum of the longest diameters for 
non-nodal lesions and the short axis for nodal lesions). When lymph nodes decrease 
to non-pathological size (short axis <10 mm) they should still have a measurement 
reported in order not to overstate progression. 
• 
If at a given assessment time point all target lesions identified at Baseline are not 
assessed, sum of the diameters cannot be calculated for purposes of assessing CR, 
PR, or SD, or for use as the nadir for future assessments. However, the sum of the 
diameters of the assessed lesions and the percent change from nadir should be 
calculated to ensure that progression has not been documented. If an assessment of 
PD cannot be made, the response assessment should be NE. 
• 
All lesions (nodal and non-nodal) should have their measurements recorded even 
when very small (e.g. 2 mm). If lesions are present but too small to measure, 5 mm 
should be recorded and should contribute to the sum of the diameters, unless it is 
likely that the lesion has disappeared in which case 0 mm should be reported. 
• 
If a lesion disappears and reappears at a subsequent time point it should continue to 
be measured. The response at the time when the lesion reappears will depend upon 
the status of the other lesions. For example, if the disease had reached a CR status 
then PD would be documented at the time of reappearance. However, if the response 
status was PR or SD, the diameter of the reappearing lesion should be added to the 
remaining diameters and response determined based on percent change from 
Baseline and percent change from nadir. 
 
Evaluation of non-target lesions: 
Definitions for assessment of response for non-target lesions are as follows: 
• 
Complete Response (CR):  The disappearance of all non-target lesions. All lymph 
nodes identified as a site of disease at Baseline must be non-pathological 
(e.g., <10 mm short axis). 
• 
Non-CR/Non-PD:  The persistence of 1 or more non-target lesion(s) or lymph nodes 
identified as a site of disease at Baseline ≥10 mm short axis. 
• 
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• 
Not Applicable (NA):  No non-target lesions at Baseline. 
• 
Not Evaluable (NE):  Cannot be classified by one of the four preceding definitions. 
 
Note: 
• 
In the presence of measurable disease, progression on the basis of solely non-target 
disease requires substantial worsening such that even in the presence of SD or PR in 
target disease, the overall tumor burden has increased sufficiently to merit 
discontinuation of therapy. 
• 
Sites of non-target lesions, which are not assessed at a particular timepoint based on 
the assessment schedule, should be excluded from the response determination 
(e.g., non-target response does not have to be "Not Evaluable").  
 
New lesions 
New malignancies denoting disease progression must be unequivocal. Lesions identified 
in follow-up in an anatomical location not scanned at Baseline are considered new 
lesions. 
Any equivocal new lesions should continue to be followed. Treatment can continue at the 
discretion of the Investigator until the next scheduled assessment. If at the next 
assessment the new lesion is considered to be unequivocal, progression should be 
documented. 
Evaluation of overall response 
Table 3 presents the overall response at an individual time point for all possible 
combinations of tumor responses in target and non-target lesions with or without the 
appearance of new lesions for participants with measurable disease at Baseline. 
Table 3 
Evaluation of Overall Response for Participants with Measurable 
Disease at Baseline 
Target Lesions 
Non-Target Lesions 
New Lesions 
Overall Response 
CR 
CR or NA 
No 
CR 
CR 
Non-CR/Non-PD or NE 
No 
PR 
PR 
Non-PD or NA or NE 
No 
PR 
SD 
Non-PD or NA or NE 
No 
SD 
NE 
Non-PD or NA or NE 
No 
NE 
PD 
Any 
Yes or No 
PD 
Any 
PD 
Yes or No 
PD 
Any 
Any 
Yes 
PD 
CR=complete response, PR=partial response, SD=stable disease, PD=progressive disease, NA=Not applicable, 
and NE=Not Evaluable 
 
Note: Participants with a global deterioration of health status requiring discontinuation of 
treatment without objective evidence of disease progression at that time should be 
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by evaluations of disease burden. Every effort should be made to document the objective 
progression even after discontinuation of treatment.  
In some circumstances, it may be difficult to distinguish residual disease from normal 
tissue. When the evaluation of CR depends on this determination, it is recommended that 
the residual lesion be investigated (fine needle aspirate/biopsy) to confirm the CR. 
Evaluation of Best Overall Response 
The best overall response is the best response recorded from the start of the treatment 
until disease progression/recurrence and will be determined programmatically by GSK 
based on the Investigators assessment of response at each time point.  
• 
To be assigned a status of SD, follow-up disease assessment must have met the SD 
criteria at least once after first dose at a minimum interval of 28 days.  
• 
If the minimum time for SD is not met, best response will depend on the subsequent 
assessments. For example, if an assessment of PD follows the assessment of SD and 
SD does not meet the minimum time requirement the best response will be PD. 
Alternatively, participants lost to follow-up after an SD assessment not meeting the 
minimum time criteria will be considered not evaluable. 
 
Confirmation Criteria: 
• 
To be assigned a status of PR or CR, a confirmatory disease assessment should be 
performed no less than 4 weeks (28 days) after the criteria for response are first met. 
 
12.6.2. 
iRECIST Guidelines 
iRECIST is based on RECIST v1.1 but adapted to account for the unique tumor response 
seen with immunotherapeutic drugs. iRECIST will be used to assess tumor response and 
progression and make treatment decisions. When clinically stable, participants should not 
be discontinued until progression is confirmed according to the rules described below. This 
allowance to continue treatment despite initial radiologic PD takes into account the 
observation that some participants can have a transient tumor flare in the first few months 
after the start of immunotherapy, and then experience subsequent disease response. These 
data will be captured in the clinical database. 
Clinical stability is defined as meeting all of the following:  
• 
Absence of symptoms and signs indicating clinically significant progression of 
disease 
• 
No decline in ECOG performance status  
• 
No requirements for intensified management, including increased analgesia, 
radiation, or other palliative care 
 
Any participant deemed clinically unstable may be discontinued from study intervention 
at site-assessed first radiologic evidence of PD. It is strongly preferred to obtain the 
repeat tumor imaging, when feasible, for confirmation of PD by iRECIST.  

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In a clinically unstable participant, if the Investigator decides to continue treatment, 
following consultation with the Sponsor medical monitor, the participant may continue to 
receive study intervention. The tumor assessment should be repeated at least 4 weeks and 
up to 12 weeks later to confirm PD by iRECIST. Images should continue to be sent in to 
the central imaging vendor for potential central review.  
If repeat imaging does not confirm PD per iRECIST and the participant continues to be 
clinically stable, study intervention may continue and follow the regular imaging 
schedule. If PD is confirmed, participants will be discontinued from study intervention. 
If a participant has confirmed radiographic progression (iCPD) as defined below, study 
intervention phase should be discontinued; however, if the participant is achieving a 
clinically meaningful benefit, continuation of study intervention may be considered 
following consultation with the Sponsor. In this case, if study intervention is continued, 
tumor imaging should continue to be performed following the intervals as outlined in the 
SOA and submitted to the central imaging vendor.  
Description of the iRECIST Process for Assessment of Disease Progression 
Assessment at Screening and Prior to RECIST v1.1 Progression 
Until radiographic disease progression based on RECIST v1.1, there is no distinct iRECIST 
assessment. 
Assessment and Decision at RECIST v1.1 Progression 
For participants who show evidence of radiological PD by RECIST v1.1, the Investigator 
will decide whether to continue a participant on study intervention until repeat imaging is 
obtained (using iRECIST for participant management [see Table 4]). This decision should 
be based on the participant’s overall clinical condition. (See discussion of clinical stability 
above).  
Tumor flare may manifest as any factor causing radiographic progression per RECIST 
v1.1, including: 
• 
Increase in the sum of diameters of target lesion(s) identified at Baseline to ≥20% 
and ≥5 mm from nadir 
– Note: the iRECIST publication uses the terminology “sum of measurements”, but 
“sum of diameters” will be used in this protocol, consistent with the original 
RECIST v1.1 terminology. 
• 
Unequivocal progression of non-target lesion(s) identified at Baseline 
• 
Development of new lesion(s) 
 
iRECIST defines response categories, including iUPD (unconfirmed progressive disease) 
and iCPD (confirmed progressive disease). For purposes of iRECIST assessment, the first 
visit showing progression according to RECIST v1.1 will be assigned a visit (overall) 
response of iUPD, regardless of which factors caused the progression. 

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At this visit, target and non-target lesions identified at Baseline by RECIST v1.1 will be 
assessed as usual. 
New lesions will be classified as measurable or non-measurable, using the same size 
thresholds and rules as for Baseline lesion assessment in RECIST v1.1. From measurable 
new lesions, up to 5 lesions total (up to 2 per organ), may be selected as New Lesions – 
Target. The sum of diameters of these lesions will be calculated and kept distinct from 
the sum of diameters for target lesions at Baseline. All other new lesions will be followed 
qualitatively as New Lesions – Non-target. 
Assessment at the Confirmatory Imaging 
At the confirmatory imaging visit assessment, the participant will be classified as 
progression confirmed (with an overall response of iCPD), or as showing persistent 
unconfirmed progression (with an overall response of iUPD), or as showing disease 
stability or response (iSD/iPR/iCR).  
Confirmation of Progression 
Progression is considered confirmed, and the overall response will be iCPD, if ANY of the 
following occurs: 
• 
Any of the factors that were the basis for the initial iUPD show worsening 
– For target lesions, worsening is a further increase in the sum of diameters of 
≥5 mm, compared to any prior iUPD time point 
– For non-target lesions, worsening is any significant growth in lesions overall, 
compared to a prior iUPD time point; this does not have to meet the 
“unequivocal” standard of RECIST v1.1 
– For new lesions, worsening is any of these: 
▪ An increase in the new lesion sum of diameters by ≥5 mm from a prior iUPD 
time point  
▪ Visible growth of new non-target lesions  
▪ The appearance of additional new lesions 
• 
Any new factor appears that would have triggered PD by RECIST v1.1 
 
Persistent iUPD 
Progression is considered not confirmed, and the overall response remains iUPD, if: 
• 
None of the progression-confirming factors identified above occurs AND 
• 
The target lesion sum of diameters (initial target lesions) remains above the initial 
PD threshold (by RECIST v1.1) 
 
Additional imaging for confirmation should be scheduled 4 to 8 weeks from the imaging 
on which iUPD is seen (see Figure 5). This may correspond to the next visit in the 
original visit schedule. The assessment of the subsequent confirmation imaging proceeds 
in an identical manner, with possible outcomes of iCPD, iUPD, and iSD/iPR/iCR. 

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Resolution of iUPD 
Progression is considered not confirmed, and the overall response becomes iSD/iPR/iCR, 
if: 
• 
None of the progression-confirming factors identified above occurs, AND 
• 
The target lesion sum of diameters (initial target lesions) is not above the initial PD 
threshold.  
 
The response is classified as iSD or iPR (depending on the sum of diameters of the target 
lesions), or iCR if all lesions resolve. 
In this case, the initial iUPD is considered to be pseudo-progression, and the level of 
suspicion for progression is “reset”. This means that the next visit that shows 
radiographic progression, whenever it occurs, is again classified as iUPD by iRECIST, 
and the confirmation process is repeated before a response of iCPD can be assigned. 
Management Following the Confirmatory Imaging 
If repeat imaging does not confirm PD per iRECIST, as assessed by the Investigator, and 
the participant continues to be clinically stable, study intervention may continue and 
follow the regular imaging schedule. If PD is confirmed, participants will be discontinued 
from study intervention. 
NOTE: If a participant has confirmed radiographic progression (iCPD) as defined above, 
but the participant is achieving a clinically meaningful benefit, continuation of study 
intervention may be considered following consultation with the Sponsor. In this case, if 
study intervention is continued, tumor imaging should continue to be performed 
following the intervals as outlined in the SOA and submitted to the central imaging 
vendor. 
Detection of Progression at Visits after Pseudo-Progression Resolves 
After resolution of pseudo-progression (i.e., achievement of iSD/iPR/iCR), iUPD is 
indicated by any of the following events: 
• 
Target lesions 
– Sum of diameters reaches the PD threshold (≥20% and ≥5 mm increase from 
nadir) either for the first time, or after resolution of previous pseudo-progression. 
The nadir is always the smallest sum of diameters seen during the entire trial, 
either before or after an instance of pseudo-progression. 
• 
Non-target lesions 
– If non-target lesions have never shown unequivocal progression, doing so for the 
first-time results in iUPD. 
– If non-target lesions have shown previous unequivocal progression, and this 
progression has not resolved, iUPD results from any significant further growth of 
non-target lesions. 
• 
New lesions 

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– New lesions appear for the first time 
– Additional new lesions appear 
– Previously identified new target lesions show an increase of ≥5 mm in the new 
lesion sum of diameters, from the nadir value of that sum 
– Previously identified non-target lesions show any significant growth 
 
If any of the events above occur, the overall response for that visit is iUPD, and the iUPD 
evaluation process (see Assessment at the Confirmatory Imaging above) is repeated. 
Progression must be confirmed before iCPD can occur. 
The decision process is identical to the iUPD confirmation process for the initial PD, with 
one exception: if new lesions occurred at a prior instance of iUPD, and at the 
confirmatory imaging the burden of new lesions has increased from its smallest value (for 
new target lesions, the sum of diameters is ≥5 mm increased from its nadir), then iUPD 
cannot resolve to iSD or iPR. It will remain iUPD until either a decrease in the new lesion 
burden allows resolution to iSD or iPR, or until a confirmatory factor causes iCPD. 
Additional details about iRECIST are provided in the iRECIST publication [Seymour, 
2017]. 

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Table 4 
Imaging and Treatment after First Radiologic Evidence of 
Progressive Disease 
 
Clinically Stable 
Clinically Unstable 
Imaging 
Treatment 
Imaging 
Treatment 
First radiologic 
evidence of PD by 
RECIST v1.1  
Repeat imaging at 
4 to 8 weeks to 
confirm PD. 
May continue study 
intervention at the 
Investigator’s 
discretion while 
awaiting confirmatory 
tumor imaging by site 
by iRECIST. 
Repeat imaging at 
4 to 8 weeks to 
confirm PD per 
Investigator’s 
discretion only. 
Discontinue treatment 
Repeat tumor 
imaging confirms 
PD (iCPD) by 
iRECIST per 
Investigator 
assessment 
No additional 
imaging required. 
Discontinue treatment 
(exception is possible 
upon consultation with 
Sponsor). 
No additional 
imaging required. 
Not applicable 
Repeat tumor 
imaging shows 
iUPD by iRECIST 
per Investigator 
assessment 
Repeat imaging at 
4 to 8 weeks to 
confirm PD. May 
occur at next 
regularly 
scheduled 
imaging visit. 
Continue study 
intervention at the 
Investigator’s 
discretion. 
Repeat imaging at 
4 to 8 weeks to 
confirm PD per 
Investigator’s 
discretion only. 
Discontinue treatment 
Repeat tumor 
imaging shows 
iSD, iPR, or iCR by 
iRECIST per 
Investigator 
assessment. 
Continue regularly 
scheduled 
imaging 
assessments. 
Continue study 
intervention at the 
Investigator’s 
discretion. 
Continue regularly 
scheduled 
imaging 
assessments. 
May restart study 
intervention if condition 
has improved and/or 
clinically stable per 
Investigator’s discretion. 
Next tumor imaging 
should occur according 
to the regular imaging 
schedule. 
iCPD = iRECIST confirmed progressive disease; iCR = iRECIST complete response; iRECIST = modified Response 
Evaluation Criteria in Solid Tumors 1.1 for immune-based therapeutics; iSD = iRECIST stable disease; iUPD = 
iRECIST unconfirmed progressive disease; PD = progressive disease; RECIST v1.1 = Response Evaluation Criteria in 
Solid Tumors v1.1. 
 

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Figure 5 
Imaging and Treatment for Clinically Stable Participants after First 
Radiologic Evidence of PD Assessed by the Investigator 
 
iRECIST = Modified RECIST 1.1; PD = progressive disease. 

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12.7. 
Appendix 7: Supportive Care Guidance  
It is recommended that a specialist with experience in the administration of hematopoietic 
stem cell transplant and/or other cell and gene therapy be involved in the care of study 
participants. During lymphodepletion, supportive care should be provided to participants 
as per local institutional guidelines, based on established oncology practice guidelines for 
chemotherapy administration and supportive care. 
All participants should be hospitalized for at least 3 days after the T-cell infusion. Staff 
treating trial participants should be experienced in acute post-transplant care and the 
management of associated toxicities (e.g., cytopenias, cytokine release syndrome (CRS), 
autologous graft versus host disease). 
Participants are at risk for the development of certain adverse effects for which 
recommended management strategies have been developed. Adverse events are most 
likely to occur within the first month following T-cell infusion but may occur at later 
time points. 
Supportive care treatments recommended herein, including tocilizumab, will be supplied 
by the pharmacy of the participating institution. 
See additional supportive guidance in corresponding section within the substudy for 
substudy specific details, when applicable. 
12.7.1. 
T-Cell Infusion Symptom Management 
Mild transient symptoms have been observed following infusion of engineered T cells. 
The management of these symptoms is suggested but should not necessarily be confined 
to the below. 
• 
Fever, chills, headache and temperature elevations will be managed with 
acetaminophen or an alternative per institutional practice. It is recommended all 
participants that develop fever or chills have a blood culture drawn. 
• 
Nausea and vomiting may be treated with a non-steroidal anti-emetic of choice. 
• 
Hypotension will initially be managed by intravenous fluid administration and 
further measures as dictated by standard medical practice. 
• 
Hypoxemia will initially be managed with supplemental oxygen and further 
measures as dictated by standard medical practice. 
 
In participants with infusion-related reaction Grade ≤2, infusion may be restarted once 
resolved to Grade <1. The bag of cells that was being infused prior to reaction, cannot be 
used beyond 45 min after thawing. Infusion-related reactions Grade 3 or higher during 
infusion should be reported to Sponsor promptly. 
12.7.2. 
Infection 
Additional measures to treat and prevent infection are outlined below. In particular, fever 
and neutropenia should be aggressively managed as well as pre-emptive influenza 

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therapy and other standard therapies for immunocompromised hosts, in accordance with 
institutional guidelines.  For participants with indwelling central lines, consider increased 
surveillance to monitor for catheter-associated infections. 
12.7.2.1. 
Pneumocystis carinii Pneumonia (PCP) 
Participants should receive prophylaxis against PCP with drug, dose and duration 
according to institutional guidelines. Single strength trimethoprim sulfamethoxazole daily 
is the recommended first-line agent, starting at Day 28 post T-cell infusion for one year. 
Other regimens, including atovaquone (1500 mg daily with food) or aerosolized 
pentamidine (300 mg every four weeks) are also acceptable (e.g., if sulfonamide allergy). 
12.7.2.2. 
Herpes Simplex, Varicella Zoster and Epstein Barr virus (EBV) 
All participants should receive prophylaxis with acyclovir (800 mg twice daily) or 
valacyclovir (500 mg twice daily) for one year initiated prior to lymphodepletion, or in 
accordance with institutional guidelines and labels. 
12.7.2.3. 
Cytomegalovirus 
All participants will be screened for cytomegalovirus (CMV) IgG seropositivity at study 
entry and baseline. If CMV viremia is detected at Baseline, treatment should be initiated 
with evidence of viral clearance prior to lymphodepleting chemotherapy. All CMV IgG 
seropositive participants will continue to be monitored for CMV viremia by CMV DNA 
PCR until 60 days post infusion of cell therapy. In the event CMV viremia is observed, 
an infectious diseases specialist should be consulted and treatment initiated if necessary 
according to institutional practice. Recommended regimens include ganciclovir-based 
therapy if ANC ≥1000, and foscarnet if ANC <1000. 
If a participant experiences prolonged or secondary pancytopenia or lymphopenia, 
additional monitoring for viral reactivation should be considered and treatment for viral 
infection initiated if necessary. A strategy for management of pancytopenia or bone 
marrow failure is described in Section 12.7.7. 
12.7.2.4. 
Hepatitis B Prophylaxis 
Participants will be screened for hepatitis B virus (HBV) at study entry. Participants who 
are hepatitis B core antibody positive must receive prophylaxis against viral reactivation 
using institutional protocols. Prophylaxis should be initiated prior to lymphodepleting 
chemotherapy and continued for 6 months. Acceptable regimens include lamivudine 
(300 mg daily), entecavir (0.5 mg daily), or tenofovir (300 mg daily). 
Additional considerations will be left to the Investigator’s discretion in accordance with 
label recommendations and institutional guidelines. 
12.7.2.5. 
Syphilis 
Participants will be screened for syphilis before leukapheresis and before 
lymphodepletion. Participants with positive Screening results should be evaluated by an 

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infectious diseases consultant. If determined to have syphilis infection, the participant 
should be treated as needed before the study procedure. 
12.7.2.6. 
Other Anti-Microbial Prophylaxis 
Antibacterial and antifungal prophylaxis should follow institutional standards for 
autologous bone marrow transplants. 
If patient has prolonged leukopenia, consider vigilance for latent viral infections. 
If a participant presents with severe or gross hematuria, consider checking for BK viruria 
and viremia. 
If a participant requires anti-microbial treatment associated with risk of cardiac toxicity, 
consider close monitoring of cardiac function (Section 9.1.6). 
12.7.3. 
Hematologic and Blood Product Support 
Blood product support should be provided to maintain the following: 
• 
Platelets >10 × 109/L in the in-patient setting and platelets >20 x 109/L in the 
out-patient setting 
• 
Hb >8.0 g/dL 
or as clinically indicated in the judgment of the Investigator, in accordance with 
institutional practice.  
See American Association of Blood Banks Guideline on platelet transfusion 
[Kaufman, 2015]. 
12.7.3.1. 
Irradiated Blood Product 
Bone marrow suppression can be a consequence of transfusion associated GvHD. To 
minimize the possibility of transfusion associated GvHD, all blood products transfused 
within 4 weeks prior to leukapheresis, within 4 weeks prior to initiation of 
lymphodepleting chemotherapy and following lymphodepleting chemotherapy until at 
least 6 months following IP infusion or until lymphocyte count returns to 1.0 × 109/L 
(whichever is longer) must be irradiated. In addition, if a participant requires systemic 
steroids or immunosuppression for the treatment of toxicity, irradiated blood products 
must be given until recovery of immune function. 
12.7.3.2. 
CMV Screened Blood Products 
Participants will be screened for CMV seropositivity at study entry. In order to reduce the 
risk of primary CMV infection, all participants (i.e., both CMV-positive and -negative 
participants) should receive leukoreduced blood products where possible (excluding the 
IP infusion). Where leukoreduced blood is not available, CMV negative participants must 
only receive blood products from CMV-seronegative donors from study entry to study 
completion. 

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
Pr ot o c ol A m d 0 4  
 
1 0 5  
C or e  
 
1 2. 7. 4.  
M a n a g e m e nt of A ut oi m m u nit y  
Partici pa nts s h o ul d be m o nit ore d t hr o u g h o u t t he trial f or p ote ntial a ut oi m m u ne reacti o ns 
i n res p o nse t o t he ge neticall y e n gi n eere d T cells t h at c o ul d i ncl u de s ki n t o xicit y, li ver 
t o xicit y, c olitis, e ye t o xicit y etc. If a ut oi m m u nit y is s us pecte d, t he I n v esti gat or s h o ul d be 
c o ntacte d, a n d e ver y atte m pt s h o ul d be ma de t o bi o ps y t he affecte d or ga n t o clarif y 
w het her t he s y m pt o ms are relate d t o t he a d mi nistere d T -cell t hera p y. If t he partici pa nt 
s ustai ns persiste nt Gra de 2, or Gra d e 3 or 4 a ut oi m m u nit y, c o nsi derati o n s h o ul d be gi ve n 
t o a d mi nistrati o n of c ortic oster oi d t hera p y, eit her l ocall y (e. g., s ki n, e yes) or s yste mic all y 
as cli nicall y i n dicate d.  
1 2. 7. 5.  
M a n a g e m e nt of C yt o ki n e R el e a s e S y n dr o m e  
C R S is a p ote ntiall y life -t hreate ni n g t o xicit y t hat h as bee n o bser ve d f oll o wi n g 
a d mi nistrati o n of a nti b o dies a n d A C T s f or ca ncer. It is defi n e d cli nicall y b y s y m pt o ms 
ma n y of w hic h mi mic i nf ecti o n, i ncl u di n g p yre xia, na usea, diarr hea, hea d ac he, fati g ue, 
tac h ycar dia, h y p ote nsi o n, tra nsa mi nitis, ras h, a n d d ys p nea. It is i m p orta nt t o e val uate t he 
partici pa nt f or c o nc urre nt  i nfecti o ns. P ote ntiall y life-t hreate ni n g c o m plicati o ns of C R S 
i ncl u de car di ac d ysf u n cti o n, a d ult res pirat or y distress s y n dr o m e, ne ur ol o gic t o xicit y, 
re nal a n d/ or h e patic fail ure, a n d disse mi nate d i ntr a vasc ular c oa g ul ati o n. C R S ma y als o be 
ass ociate d wit h fi n di n gs of macr o p ha ge acti vati o n s y n dr o me or occ ur c oi nci de nt wit h 
t u m or l ysis s y n dr o me. 
C R S ca uses a ra pi d rise i n ser u m c yt o ki ne le vels u n der c o n diti o ns of i m m u ne acti vati o n 
a n d alt h o u g h c yt o ki nes will be assa ye d seriall y t hr o u g h o ut t he st u d y, res ults o f t he assa ys 
will n ot be a vaila ble i n real ti me; t heref ore, C R S s h o ul d be gra de d a n d ma na ge d wit h 
s u p p orti ve a n d i m m u n os u p pressi ve i nter ve nti o ns acc or di n g t o t he s e verit y of s y m pt o ms 
[Lee , 2 0 1 9]. C R S gra di n g will i ncl u de Fe ver, H y p o xia a n d H y p ote nsi o n. Or ga n t o xicities 
ass ociate d wit h C R S will be gra de d acc or di n g t o N CI -C T C A E v 5. 0 a n d d o n ot i nfl ue nce 
C R S gra di n g [ Lee , 2 0 1 9]. 
Ta ble 5  pr o vi des t he rec o m me n de d ma na ge m e nt of C R S acc or di n g t o gra de, w hic h has 
bee n f urt h er a d a pte d fr o m C T C A E f or use wit h i m m u n ot hera p y a n d s h o ul d be 
i m ple me nte d i n acc or da n ce wit h i nstit uti o nal gui deli nes. S y m pt o ms ca n mi mic t h ose 
see n wit h i nfecti o n. T he dia g n osis of C R S is cli nical a n d is s u p p orte d b y t he e x cl usi o n of 
i nfecti o n as well as t he prese nce of i ncreas e d c yt o ki ne le vels a n d ot her  
 
Assess me nt a n d treat me nt g ui deli nes are pr o v i de d bel o w i n ali g n me nt wit h (t he S ociet y 
f or I m m u n ot hera p y of Ca ncer SI T C) g ui deli nes [Ma us , 2 0 2 0] a n d s h o ul d be f oll o we d i n 
c o nj u ncti o n wit h a n y l o cal g ui deli n es w h ere a vail a ble .  
If C R S is s us pecte d, a p h ysicia n wit h e x pertise i n t he ma na ge me nt of p artici pa nts 
f oll o wi n g b o ne marr o w tra ns pla nt s h o ul d be c o ns ulte d. 
If C R S is s us pecte d, i n a d diti o n t o assess me nt f or i nfecti o n, per t he Sc h e d ule of 
Assess me nt ( S O A) i n i n di vi d ual s u bst u dies, t he f oll o wi n g tests s h o ul d be c o n d ucte d 
C CI

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every day for the first week and approximately every other day thereafter until symptoms 
are improving or an alternative diagnosis is confirmed: 
• 
Local tests: 
– Chemistry, hematology, ferritin and coagulation, as well as C-reactive protein 
(CRP) labs; 
• 
Central tests: 
– Cytokine-profiling as described in Section 9.10.3. 
 
If CRS is suspected, participants deemed to have significant cardiovascular risk factors 
(per Section 9.1.6) should be considered for earlier intervention with tocilizumab and/or 
steroids at the onset of CRS. 
If CRS Grade ≥2 is suspected, an ECHO/MUGA is required at onset of Grade ≥2 CRS. 
Additional monitoring must be conducted for a minimum of 3 days post onset of 
Grade ≥2 CRS and as long as deemed necessary by the Investigator: 
• 
Continuous cardiac telemetry monitoring  
• 
ECHO/MUGA as clinically indicated 
• 
Local tests: 
– Daily troponin and N-terminal pro B-type natriuretic peptide (NT-proBNP) or 
BNP tests. 
 
If, in the opinion of the Investigator, a participant develops any clinically significant new 
or worsening cardiovascular symptoms or abnormal cardiac labs / imaging finding, a 
cardiology consult should be conducted for urgent evaluation. 

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Table 5 
Management Guidelines for Cytokine Release Syndrome 
Grade 
Clinical Presentation for Grading 
Assessment1,2 
Management Guidelines 
1 
Temperature 38.0 °C 
Vigilant supportive care4 
Assess for infection and treat5 
2 
Temperature 38.0 °C with hypotension not 
requiring vasopressors and/or hypoxia requiring 
the use of oxygen delivered by low-flow nasal 
cannula (≤6 L/minute) or blow-by. 
Monitor cardiac and other organ function 
Vigilant supportive care4 
Assess for infection and treat5 
Treat hypotension with fluid and pressors 
Administer O2 for hypoxia6 
Consider administering tocilizumab ± 
corticosteroids7  
3 
Temperature 38.0 °C with hypotension requiring 
a vasopressor with or without vasopressin and/or 
hypoxia requiring high-flow nasal cannula (>6 
L/minute), facemask, non-rebreather mask, or 
venturi mask not attributable to any other cause3 
Monitor participant very closely for cardiac and 
other organ dysfunction. Most likely will require 
monitoring in an intensive care unit (ICU). 
Vigilant supportive care4 
Assess for infection and treat5 
Treat hypotension with fluid and pressors6. 
Administer O2 for hypoxia. 
Administer tocilizumab ± corticosteroids7 
4 
Temperature ≥38.0 °C with hypotension requiring 
multiple vasopressors (excluding vasopressin) 
and/or hypoxia requiring positive pressure (eg: 
CPAP, BiPAP, intubation and mechanical 
ventilation) 8 
Manage participant in ICU 
Intensive supportive care including mechanical 
ventilation, fluids, pressors, antibiotics and other 
measures as required6 
Administer tocilizumab ± corticosteroids7 
5 
Death9 
 
1. 
Fever is defined as temperature ≥38°C not attributable to any other cause. The constitutional symptoms of CRS, 
such as myalgia, arthralgia, and malaise, are by themselves nonspecific; however, when coincident with fever in 
the expected timeframe, the etiology of CRS is more likely. In patients who have CRS then receive antipyretic or 
anticytokine therapy such as tocilizumab or steroids, fever is no longer required to grade subsequent CRS 
severity. In this case, CRS grading is driven by hypotension and/or hypoxia. 
2. 
CRS grade is determined by the more severe event: hypotension or hypoxia not attributable to any other cause. 
For example, a patient with temperature of 39.5°C, hypotension requiring 1 vasopressor, and hypoxia requiring 
low-flow nasal cannula is classified as grade 3 CRS. 
3. 
Low-flow nasal cannula is defined as oxygen delivered at 6 L/minute. Low flow also includes blow-by oxygen 
delivery, sometimes used in pediatrics. High-flow nasal cannula is defined as oxygen delivered at >6 L/minute. 
4. 
Supportive care includes:  monitor fluid balance, maintain adequate hydration and blood pressure  
5. 
Assessment and treatment to include history and physical, blood and urine cultures, imaging studies, 
administration of antimicrobial agents for concurrent bacterial infections, and for treatment of fever and 
neutropenia as per institutional practice; and antipyretics, analgesics as needed.  
6. 
Given that prolonged fluid resuscitation without pressor use is associated with worse outcome and because early 
and aggressive supportive care, early use of vasopressors, and timely anti-cytokine therapy are paramount to 
mitigating life-threatening CRS. 
7. 
Other immunosuppressor agents may be used, including TNFα and IL-1R inhibitors.  
8. 
Intubation of a patient without hypoxia for the possible neurologic compromise of a patent airway alone or for a 
procedure is not, by definition, grade 4 CRS. By extension, a patient experiencing seizures in which a 
compromised airway affects oxygenation and intubation reverses such deficits is not considered to have grade 4 
CRS, because the seizure rather than CRS is the cause of the hypoxia. Furthermore, a patient who remains 
intubated for a neurologic cause is not considered to have CRS when the other signs of CRS have resolved. 
9. 
Grade 5 CRS is defined as death due to CRS in which another cause is not the principle factor leading to this 
outcome. 
Source: [Lee, 2019] 

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Participants requiring immunosuppressive intervention may receive tocilizumab, steroids, 
or both [Davila, 2014; Lee, 2014; Lee, 2019]. Tocilizumab is a humanized anti-IL-6 
receptor antibody that has been approved for the management of severe or 
life-threatening CRS induced by chimeric antigen receptor (CAR) T cell therapy 
[Tocilizumab USPI, 2020; Tocilizumab SmPC, 2020].  
Per the package insert, the recommended dose of tocilizumab for patients with severe or 
life-threatening CRS who weigh 30 kg or above is 8 mg/kg, administered intravenously 
over 1 hour with a total dose not exceeding 800 mg per infusion. If no clinical 
improvement in the signs and symptoms of CRS occurs after the first dose, up to 3 
additional doses of tocilizumab may be administered. The interval between consecutive 
doses should be at least 8 hours. 
Side effects attributed to chronic use of tocilizumab in rheumatologic disease include 
transaminitis, thrombocytopenia, elevated cholesterol and low-density lipoproteins, 
neutropenia and increased infections but acute infusional toxicities have not been 
reported in CRS use [Lee, 2014; Lee, 2019]. 
Per SITC 2020 guidelines: 
If CRS does not improve after one dose of tocilizumab, then steroids should be 
administered with a second dose tocilizumab (e.g. methylprednisolone 2 mg/kg/day or 
dexamethasone 0.5 mg/kg up to 10 mg/dose). If CRS does not improve after 2 doses of 
tocilizumab (and steroids), third-line agents, including anakinra, siltuximab, and 
high-dose methylprednisolone, should be considered. If steroids are used in the 
management of CRS, a rapid taper should be used once symptoms begin to improve 
[Maus, 2020].  
Use of myeloid growth factors, particularly Granulocyte-Macrophage Colony Stimulating 
Factor (GM-CSF) is not recommended because GM-CSF may theoretically aggravate 
CRS [Raje, 2019]. Consider holding G-CSF during CRS [Maus, 2020]. 
Assessment and management of neurological signs and symptoms associated with CRS 
should include consideration of concurrent occurrence of Immune-effector cell-associated 
neurotoxicity syndrome (ICANS). See Section 12.7.8 for further details. 
12.7.6. 
Management of Graft-versus-Host Disease (GvHD) 
Autologous GvHD has been described in association with adoptive transfer of ex-vivo 
expanded/co-stimulated autologous T cells [Rapoport, 2009], as well as infusion of 
T cells with engineered specificity for NY-ESO-1 and LAGE-1a [Garfall, 2013], 
following high-dose chemotherapy and ASCT in participants with multiple myeloma. 
There is the potential for participants who receive lymphodepleting therapy followed by 
engineered autologous T-cell infusion to experience GvHD and/or autoimmune 
GvHD-like symptomatology. Autologous GvHD is typically milder than classic 
(allogeneic) GvHD [Kline, 2008], and is usually manageable with treatment. However, 
severe cases (including fatalities) have been reported [Fidler, 2012].  There are no 
published guidelines for the management of autologous GvHD. However, lessons can be 

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drawn from published case reports and guidelines for the diagnosis and management of 
acute GvHD following allogeneic transplant [Dignan, 2012]. 
12.7.6.1. 
Diagnosis of GvHD 
The diagnosis of GvHD is predominantly based on clinical findings and is often one of 
exclusion (Table 6). Many of these symptoms can also occur in the setting of the 
preparative regimen, high dose cyclophosphamide, as well as with CRS. Any of these 
conditions including GvHD can be associated with fever. The skin is the most commonly 
involved organ, followed by the GI tract and liver. A constellation of symptoms 
involving these organ systems may be helpful in establishing the diagnosis of GvHD. 
Diarrhea, rash, fever, and pancytopenia are common toxicities in the GSK3377794 
(lete-cel) program where we have the most clinical experience. Mild (Grade 1 or 2) 
transient transaminitis without cholestasis has been observed. 
Table 6 
Overview of Clinical Findings/Symptoms of GvHD 
Organ 
Findings/Symptoms 
Differential Diagnosis 
Histopathology 
Skin 
Maculopapular rash involving the 
neck and shoulders as well as the 
palms and soles that spreads to 
include the rest of the body. 
Drug reactions, viral 
exanthems, CRS, and effects 
of chemotherapy or radiation 
Apoptosis at base of epidermal 
rete pegs, dyskeratosis, 
exocytosis of lymphocytes, 
satellite lymphocytes adjacent to 
dyskeratotic epidermal 
keratinocytes and perivascular 
lymphocytic infiltration in the 
dermis. 
GI 
Secretory diarrhea is most 
common but nausea, vomiting, 
anorexia, weight loss and 
abdominal pain can also occur. 
Diarrhea can be copious. 
Bleeding may result from mucosal 
ulceration and ileus may ensue. 
Side effects of chemotherapy 
or other drugs and infection of 
the GI tract 
Patchy ulcerations, apoptotic 
bodies at crypt bases, crypt 
ulceration and flattening of 
surface epithelium 
Liver 
Cholestatic pattern of liver injury 
including elevated conjugated 
bilirubin, alkaline phosphatase 
and GGTP. Participants may 
present with jaundice, with pruritis 
in more severe cases. 
Veno-occlusive disease of the 
liver, viral infections, drug 
toxicity and sepsis. 
Endothelialitis, lymphocytic 
infiltration of the portal areas, 
pericholangitis and bile-duct 
destruction. 
 
NOTE:  Bone marrow suppression and related cytopenias have been described in the 
setting of acute GvHD. Management of this complication is challenging, with no clearly 
established guidelines regarding immunosuppression. Treatment may be largely 
supportive, including transfusions and treatment of infections. 
Management should include consultation with a physician with expertise in the 
management of participants following bone marrow transplant. 

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Bone marrow suppression is also a feature of transfusion-related GvHD. To minimize the 
possibility of transfusion-related GvHD, refer to Section 12.7.3.1 for guidance on 
irradiated blood products.  
12.7.6.2. 
Grading of GvHD 
Grading of acute GvHD is based on the stage of dermal, gastrointestinal, and hepatic 
involvement as described in Table 7. Careful measurement of stool volume and 
assessment of percentage of body area covered by rash are important for proper grading 
and treatment. 
Table 7 
Staging of Dermal, Gastrointestinal and Hepatic Involvement with 
Acute GvHD 
Stage 
Skin 
Gut 
Liver 
1 
Maculopapular rash <25% of body area 
Diarrhea >500 mL/day 
Bilirubin 2-3 mg/dL 
2 
Maculopapular rash 25%-50% of body area 
Diarrhea >1,000 mL/day 
Bilirubin 3-6 mg/dL 
3 
Generalized erythroderma 
Diarrhea>1,500 mL/day 
Bilirubin 6-15 mg/dL 
4 
Desquamation and bullae 
Diarrhea>2,000 mL/day or pain or 
ileus 
Bilirubin >15 mg/dL 
 
With the addition of assessment of functional impairment, grading can be determined 
using Table 8 [Glucksberg, 1974]. 
Table 8 
Grading of Acute GvHD 
Grade 
Skin 1 
Gut 1 
Liver 1 
Functional status 2 
I 
1-2 
0 
0 
0 
II 
1-3 
1 
1 
1 
III 
2-3 
2-3 
2-3 
2 
IV 
1-4 
2-4 
2-4 
3 
1. 
Staging is described in Table 7. 
2. 
Mild, moderate, or severe decrease in performance status 
 
12.7.6.3. 
Management of GvHD 
Although the diagnosis of GvHD is predominantly based on clinical grounds, biopsy of 
affected organs can be helpful in excluding other causes and supporting the diagnosis of 
GvHD with consistent histopathologic findings. However, awaiting biopsy results should 
not delay the start of appropriate therapy. 
If GvHD is suspected: 
• 
A physician with expertise in the management of participants following bone 
marrow transplant should be consulted 
• 
Biopsy of the affected organ(s) should be considered 
 

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Corticosteroids have been used as the standard first-line treatment for GvHD for several 
decades. Their effect is likely to be due to lympholytic effects and anti-inflammatory 
properties. In general, intestinal and liver GvHD require more prolonged steroid therapy 
than skin disease although response times vary. 
Diarrhea should be managed with volume replacement, dietary restriction, and anti-
diarrheal agents including the consideration of somatostatin for secretory diarrhea. 
Agents that slow motility should be used cautiously, ensuring that there is no evidence of 
ileus or toxic megacolon, and infectious causes of diarrhea should be excluded. 
General guidelines for first-line treatment based on grade are provided in Table 9 and 
should be considered in conjunction with input from the consulting physician with bone 
marrow transplant expertise. 
Table 9 
Management Guidelines for GvHD 
Grade 
Management Strategy 
I 
Participants with Grade I disease are not likely to require systemic treatment. Cutaneous GvHD 
may respond to topical steroid creams. Antihistamines may be helpful in participants with pruritis. 
Participants should be reviewed frequently for other organ manifestations of GvHD. 
II 
Treat skin symptoms with topical steroids. For GI symptoms - optimize anti-diarrheal regimen, 
dietary restrictions, volume replacement and consider initiation of non-absorbable steroids. For 
refractory or progressive symptoms consider systemic steroids as outlined below. 
III 
For more severe or progressive symptoms consider systemic corticosteroids (e.g., 
methylprednisolone one (1) mg/kg per day1) 
IV 
Methylprednisolone two (2) mg/kg per day1 
1. 
The use of ‘nonabsorbable’ steroids (budesonide and beclomethasone) can be considered for acute intestinal 
GvHD in order to reduce the dose of systemic steroids 
 
If high-dose corticosteroids are required, treatment should generally be continued for at 
least 5 days followed by tapering doses over several weeks. A physician with expertise in 
infectious diseases in immunocompromised hosts should be consulted, and prophylactic 
antimicrobials should be considered. 
Second-line treatment can be considered for participants who have failed to respond for 
5 days or have progressive symptoms after 3 days. There is no clear second-line agent 
that is preferred for steroid refractory GvHD. General guidelines for second-line 
treatment based on grade are provided below and should be considered in conjunction 
with input from the consulting physician with bone marrow transplant expertise. 
For steroid refractory skin rash, topical tacrolimus may also be useful. 
Most of the allogeneic transplant participants are concurrently receiving calcineurin 
inhibitors in part as prophylaxis against GvHD. Therefore, for Grade II-IV disease 
refractory to high dose steroids, the addition of a calcineurin inhibitor can be considered. 

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Otherwise, there are several additional second-line treatment options for which there is 
currently limited and/or evolving supporting data. Treating physicians can refer to the 
Haemato-oncology Task Force of the British Committee for Standards in Hematology 
and the British Society for Blood and Marrow Transplantation guideline for diagnosis 
and management of acute graft-versus-host disease [Dignan, 2012]. 
12.7.7. 
Management of Pancytopenia with Bone Marrow Failure/Aplastic 
Anemia 
Pancytopenia with bone marrow failure / aplastic anemia has been reported after initial 
bone marrow recovery from high-dose chemotherapy followed by infusion of NY-ESO-1 
specific T cells. Bone marrow recovery following lymphodepletion will be defined as: 
• 
ANC 1,000/μL for 2 consecutive measurements approximately 7 days apart, and 
• 
Platelet count 20,000/μL without transfusion support for 1 week. 
 
Aplastic anemia is a rare hematological disorder characterized by pancytopenia and a 
hypocellular marrow. Participants are usually symptomatic on presentation, but some are 
detected incidentally when unexpected cytopenias are found on a routine blood count. 
The diagnosis of severe aplastic anemia is made in the setting of a hypocellular bone 
marrow when 2 of the following 3 blood counts are met: ANC <500/μL, absolute 
reticulocyte count <60,000/μL, and platelet count <20,000/μL, and myelodysplastic 
syndrome is ruled out. The clinical consequences of aplastic anemia are life-threatening 
bleeding from thrombocytopenia, and infection as a result of neutropenia. Bacterial and 
fungal infections are common and a significant cause of morbidity and mortality. 
Management of bone marrow suppression and related cytopenias in aplastic anemia is 
challenging, with no clearly established guidelines regarding immunosuppression. 
Treatment is largely supportive, including transfusions and treatment of infections. If 
there is evidence of, or concern for the development of pancytopenia (decreasing 
hemoglobin, platelets or neutrophils, or increasing transfusion requirements) following 
initial bone marrow recovery the following measures should be implemented: 
• 
Consult a physician with expertise in the management of aplastic anemia 
• 
Increase the frequency of complete blood counts (CBCs) as clinically indicated. 
• 
Exclude other alternative etiologies such as other drugs, viral causes, etc. 
• 
An early bone marrow biopsy is recommended for clinical diagnosis, with a sample 
to be provided to the Sponsor for study. Details on tissue collections, kit use, and 
shipment information can be found in the SRM.  
• 
A matched peripheral blood sample should be collected in parallel with the bone 
marrow sample and provided to the Sponsor.  
• 
Initiate treatment with G-CSF 
• 
Consult an Infectious Diseases expert 
• 
Once alternative etiologies have been excluded, strongly consider 
immunosuppression (e.g. methylprednisolone 2mg/kg initial dose) or more 

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aggressive regimens (e.g. antithymocyte globulin (ATG), cyclosporine, eltrombopag) 
as well as antimicrobial prophylaxis/therapy with the advice of your 
hematology/Infectious Diseases consultant(s). If high dose corticosteroids are 
initiated, continue for a minimum of 5 days and taper gradually with advice from 
expert consultants. 
 
Refer to Section 12.7.6 regarding bone marrow suppression as a feature of GvHD. 
12.7.8. 
Management of Immune Effector Cell-Associated Neurotoxicity 
Syndrome (ICANS) 
Encephalopathy has been described in association with chimeric antigen receptor (CAR) 
T therapy and termed CAR T cell related encephalopathy syndrome, or CRES [Neelapu, 
2018]. CRES typically manifests as a toxic encephalopathy which is generally reversible. 
Early signs include diminished attention, language disturbance and impaired handwriting. 
Other signs/symptoms include confusion, disorientation, agitation, aphasia, somnolence, 
and tremors. In severe cases of CRES (defined as Grade >2), seizures, motor weakness, 
incontinence, mental obtundation, increased intracranial pressure, papilledema, and 
cerebral edema may also occur. 
CRES occurring within the first 5 days after immunotherapy may be concurrent with high 
fever and CRS symptoms. This form of CRES tends to be of shorter duration, lower 
grade (Grade 1–2), and the CRS is generally reversible with anti-IL-6 therapy. CRES 
presenting as delayed neurotoxicity with seizures or episodes of confusion can occur 
three or four weeks after CAR T-cell therapy, after the initial fever and CRS subside. 
Immune Effector Cell-Associated Neurotoxicity Syndrome (ICANS) is a disorder 
characterized by a pathologic process involving the central nervous system following any 
immune therapy that results in the activation or engagement of endogenous or infused 
T cells and/or other immune effector cells. Symptoms or signs can be progressive and 
may include aphasia, altered level of consciousness, impairment of cognitive skills, motor 
weakness, seizures, and cerebral edema. ICANS may occur with other cancer 
immunotherapies, including ACT. Cancer patients may also be at risk for ICANS 
symptoms due to other causes ranging from mild to moderate somnolence and confusion 
as a result of sedating medications, to seizures in relation to CNS tumors. The possible 
contribution of other medications, underlying disease and/or co-morbidities should be 
evaluated when considering a diagnosis of ICANS in relation to T-cell therapy. 
12.7.8.1. 
Grading of ICANS 
Lee et al. [Lee, 2019] have developed a new grading system for ICANS which 
incorporates the use of a modified version of the CARTOX 10-point neurological 
assessment tool termed Immune Effector Cell-Associated Encephalopathy (ICE) (Table 
10). Points are assigned for each of the tasks in Table 10, which are performed correctly. 
Normal cognitive function is defined by an overall score of 10. The ICE should be used 
to monitor all participants for ICANS. 

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Table 10 
ICE-Encephalopathy Assessment Tool for Grading of ICANS 
Task 
ICE Points 
Orientation to: year, month, city, hospital 
Total of 4 points (one point for each) 
Name three objects, for example point to: clock, pen, button 
Total of 3 points (one point for each) 
Follow simple commands (for example, “Show me 2 fingers” or “Close 
your eyes and stick out your tongue” 
1 point 
Write a standard sentence, e.g., ‘our national bird is the bald eagle’ 
1 point 
Count backwards from 100 in tens 
1 point 
Abbreviation:ICE = Immune Effector Cell-Associated Encephalopathy; ICANS= Immune Effector Cell-Associated 
Neurotoxicity Syndrome. 
Scoring: 10, no impairment; 7-9; grade 1 ICANS; 3-6, grade 2 ICANS; 0-2, grade 3 ICANS; 0 due to patient 
unarousable and unable to perform ICE assessment, grade 4 ICANS. 
 
The ICE score is used in grading of ICANS in adults as presented in Table 11.   
Table 11 
Grading of Immune Effector Cell-Associated Neurotoxicity 
Syndrome (ICANS)  
Neurotoxicity 
Domain  
Grade 1 
Grade 2 
Grade 3 
Grade 4 
ICE score 1 
7 to 9 
3 to 6 
0 to 2 
0 (Participant is unarousable 
and unable to perform ICE) 
Depressed level of 
consiousness 2 
Awakens 
spontaneously 
Awakens to 
voice 
Awakens only to tactile 
stimulus 
Patient is unarousable or 
requires vigorous or repetitive 
tactile stimuli to arouse. Stupor 
or coma 
Elevated 
ICP/cerebral 
edema 
N/A 
N/A 
Focal/local edema on 
neuroimaging 4 
Diffuse cerebral edema on 
neuroimaging; decerebrate 
or decorticate posturing; or 
cranial nerve VI 
palsy; or papilledema 3; or 
Cushing's triad 
Motor findings 5 
N/A 
N/A 
N/A 
Deep focal motor weakness 
such as hemiparesis or 
paraparesis 
Seizure 
N/A 
N/A 
Any clinical seizure 
focal or generalized 
that resolves rapidly or 
nonconvulsive seizures 
on EEG 
that resolve with 
intervention 
Life-threatening prolonged 
seizure (>5 min); or 
Repetitive clinical or electrical 
seizures without 
return to Baseline in between 
1. See Table 10 for ICE. A patient with an ICE score of 0 may be classified as grade 3 ICANS if awake with global 
aphasia, but a patient with an ICE score of 0 may be classified as grade 4 ICANS if unarousable. 
2. Depressed level of consciousness should be attributable to no other cause (eg, no sedating medication) 
3. Papilloedema grading is performed according to the modified Frisén scale. 
4. Intracranial hemorrhage with or without associated edema is not considered a neurotoxicity feature and is excluded 
from ICANS grading.  
5. Tremors and myoclonus associated with immune effector cell therapies do not influence ICANS grading 
This table is based on Lee, 2019. 
ICANS= Immune Effector Cell-Associated Neurotoxicity Syndrome; ICE = Immune Effector Cell-Associated 
Encephalopathy; CSF = cerebrospinal fluid; ICP = Intracranial Pressure; N/A = not applicable. 
 

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12.7.8.2. 
Monitoring for Immune Effector Cell-Associated Neurotoxicity 
Syndrome (ICANS) 
Brain MRI (or CT Scan if MRI not feasible) must be obtained for all participants as part 
of leukapheresis eligibility screening. This should be repeated at Baseline prior to 
lymphodepletion in: 
• 
All participants with a history of CNS metastasis, and 
• 
In participants with no history of CNS metastasisif more than 3 months have elapsed 
between last brain MRI and the start of lymphodepletion or if they show neurological 
symptoms consistent with CNS metastasis. 
 
Brain MRI may be performed at other time points, if clinically indicated. 
ICE should be measured on the day of T-cell infusion prior to receiving treatment and 
then at least through Day 8 according to the SOA in individual substudies. If a participant 
is found to have ICANS, the ICE should be used at least twice per day until resolution or 
stable.  It can also be used at later visits if indicated. 
12.7.8.3. 
Management of ICANS 
The recommended management of ICANS should be based on toxicity grade. Table 12 
provides guidance on the management of ICANS and should be implemented in 
accordance with institutional guidelines.  
A neurology consultation should be obtained for all participants with ICANS for 
thorough neurological evaluation, and recommendations for further testing such as 
electroencephalogram (EEG) and neuroimaging as indicated.  
The following tests should be conducted every day for the first week and approximately 
every other day thereafter until symptoms are improving or an alternative diagnosis is 
confirmed: 
• 
Local tests: 
– Chemistry, hematology, ferritin, and coagulation, as well as C-reative protein 
(CRP) labs 
 
Per SITC 2020 guidelines: 
Across several trials, tocilizumab has failed to resolve symptoms of ICANS, despite 
alleviating severe CRS [Maus, 2020]. It remains to be determined whether targeting 
IL-6R in isolation during established CRS is insufficient to prevent subsequent 
neurotoxicity or if the lack of efficacy is due to tocilizumab’s inability to cross the 
blood-brain barrier. It has been postulated that tocilizumab may worsen ICANS and 
therefore an assessment of treatment priority may be required between the severity of 
CRS and ICANS. Alternative IL-6 blockade such as siltuximab or the IL-1 antagonist, 
anakinra, have been proposed as potential alternatives, but data are lacking on their safety 
and efficacy. 

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Corticosteroids have been successfully used for the management of ICANS and seizure 
prophylaxis has been implemented in some studies, but the ideal dose and duration have 
not yet been determined [Maus, 2020].  
Table 12 
Management of ICANS 
ICANS 
Grade 
Treatment 
1 
• Vigilant supportive care; aspiration precautions; IV hydration 
• Withhold oral intake of food, medicines, and fluids, and assess swallowing 
• Convert all oral medications and/or nutrition to IV or enteral tube if swallowing is impaired 
• Avoid medications that cause central nervous system depression 
• Evaluate for other contributing causes and treat accordingly 
• Neurology consultation including fundoscopic exam to assess for papilloedema 
• MRI of the brain with and without contrast (CT scan of the brain if MRI is not feasible).  Further testing 
if indicated and appropriate such as diagnostic lumbar puncture with measurement of opening 
pressure if increased intracranial pressure is suspected, or MRI of the spine if the participant has focal 
peripheral neurological deficits 
• Consider levetiracetam therapy and EEG if seizure activity is suspected 
• Consider anti‑IL‑6 therapy. Tocilizumab1 may worsen neurotoxicity. Management of neurotoxicity may 
take precedence over the management of low-grade CRS, but this does not apply to high-grade CRS. 
Alternative IL-6 blockade may be considered (e.g. siltuximab) or the IL-1 antagonist, anakinra. 
2 
• As described for Grade 1 PLUS 
• Consider ICU transfer 
• Consider corticosteroids2 
3 
• As described for Grade 1 & 2 PLUS 
• Corticosteroids are recommended 
• Stage 1 or 2 papilloedema with CSF opening pressure <20 mmHg should be treated corticosteroid 
regimen as per Grade 4 below. 
• Consider repeat neuroimaging (CT or MRI) every 2 to 3 days if participant has persistent Grade 3 
ICANS 
4 
• As described for Grade 1 & 2 & 3 PLUS 
• Consider neurosurgical consultation for participants with evidence of increased intracranial pressure 
• ICU monitoring; consider mechanical ventilation for airway protection 
1. Tocilizumab: 8mg/kg iv for patients weighing 30kg or above, administered over 1 hr, max dose 800 mg, doses at 
least 8 hrs apart. 
2. Consider dexamethasone 10 mg IV every 6 hrs (Grade ≤3 ICANS), or methylprednisolone 1 mg/kg IV every 24 hrs 
for 3 days (Grade 4 ICANS), if refractory to anti‑IL‑6 therapy, or for ICANS without concurrent CRS; once initiated 
continue corticosteroids for at least two doses until improvement to Grade 1 ICANS and then taper. 
Source: [Maus, 2020]. 
CRS = cytokine release syndrome; CSF = cerebrospinal fluid; CT = computed tomography; 
EEG = electroencephalogram; hrs = hours; ICANS = Immune Effector Cell-Associated Neurotoxicity Syndrome; 
ICU = intensive care unit; IL-6 = interleukin-6; IV = intravenous; MRI = magnetic resonance imaging. 
 
Grade 1 ICANS. Grade 1 ICANS is defined as a score of 7 to 9 on the ICE assessment in 
Table 11. A patient with grade 1 ICANS may have a delay in responses or disorientation 
to time or place, mild inattention with difficulty in counting numbers backwards, or 
impairment of handwriting. There may be drowsiness but patients awaken spontaneously, 
and when prompted, the patient should be able to complete most of the ICE assessment. 
Grade 1 ICANS may be seen during CRS waxing and waning with febrile episodes. 
Grade 2 ICANS. Grade 2 ICANS is defined as a score of 3 to 6 on the ICE assessment 
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neurotoxicity and early signs during grade 2 include paraphasic errors (the production of 
unintended syllables and words during attempts to speak) and verbal perseveration with 
patients repeating the same words over and over. Patients with grade 2 ICANS are able to 
communicate their needs but it is effortful. Patients may have depressed level of 
consciousness but are arousable to voice and the responses may be slowed. 
Grade 3 ICANS. Grade 3 ICANS is defined as a score of 0 to 2 on the ICE assessment 
as presented in Table 11. Patients with grade 3 ICANS have severe global aphasia and are 
not speaking or following commands even when wide awake and therefore may be 
unable to complete any of the ICE questions. Alternatively, they may have excessive 
drowsiness and need tactile stimulus to attend to examiner. Any clinical seizure whether 
simple partial, complex partial or generalized, and any electrographic seizures would also 
meet criteria for grade 3 ICANS. If neuroimaging shows new focal or local edema this 
would also be categorized as grade 3 ICANS. However, intracranial hemorrhage due to 
coagulopathy or other causes with or without associated edema is not considered a 
neurotoxicity feature and is excluded from ICANS grading. 
Grade 4 ICANS.  Grade 4 ICANS is defined as patients who have a score of 0 on the 
ICE assessment due to being unarousable and unable to perform the ICE assessment as 
presented in Table 11. Stupor and coma may be seen; the stuporous patient only responds 
by grimacing or drawing away from vigorous or repetitive tactile stimuli and the 
comatose patient is unarousable and/or unresponsive. This depressed level of 
consciousness should be attributable to no other cause (e.g., no sedating medication), 
which is often a complicating factor in sick patients with CRS. Some patients may 
require intubation for airway protection. In addition, any patient having prolonged or 
repetitive clinical or subclinical electrographic seizures without return to Baseline in 
between, or deep focal motor weakness such as hemiparesis or paraparesis would be 
considered to have Grade 4 ICANS. Patients with symptoms and signs of elevated ICP 
such as projectile vomiting with headache, depressed consciousness, cranial nerve VI 
palsies, papilledema, Cushing's triad of bradycardia, hypertension and respiratory 
depression, decerebrate or decorticate posturing, or diffuse cerebral edema on head 
imaging would also be considered to have grade 4 ICANS.  
Grade 5 ICANS. By convention, Grade 5 ICANS is defined as death due to ICANS 
where another cause is not the principle factor leading to this outcome. 
12.7.9. 
Chemotherapy Symptom Management 
Cyclophosphamide and fludarabine are used as conditioning chemotherapy in this study 
to cause lymphodepletion and facilitate expansion of the infused T cells. Symptoms 
associated with the use of cyclophosphamide and fludarabine are included in the product 
labels. Refer to the most current product labels, and substudy specific sections for details 
of prohibited medications. 
12.7.9.1. 
Management of Neutropenia 
The conditioning chemotherapy is intended to cause lymphodepletion. However, 
neutropenia is also common. Prophylactic use of G-CSF is recommended in all 
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according to ASCO guidelines [Smith, 2015]. G-CSF should be given starting ~24 hours 
after the administration of chemotherapy until resolution of neutropenia (reaching an 
ANC of at least 2 × 109/L to 3 × 109/L or as per institutional practice).  
Long-acting (pegylated) G-CSF may be given in preference to short acting daily G-CSF 
in accordance with institutional standard practice. Pegylated G-CSF will be given as one 
dose ~24 hours post the final dose of cyclophosphamide. 
12.7.10. 
Management of Guillan-Barré Syndrome (GBS) 
Please obtain a neurology consultation for all participants with signs or symptoms 
suggestive of GBS for thorough neurological evaluation, and for expert recommendations 
on further diagnostic workup including EMG, lumbar puncture, infectious panel to guide 
management and follow up. 
Case assessment for possible Guillain Barre Syndrome using diagnostic and 
prognostic tools supported by medical diagnosis and/or medical treatment 
 
*Please refer to algorithm for treatment described in Figure 6. 
Additional details specific to the neurology consultation are included in Appendix 8 
(Section 12.8). 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Peripheral 
neuropathy 
Symptoms 
suggestive of 
GBS/AIDP 
Treatment according 
to guidelines/clinical 
practice 
GBS Diagnostic tool: 
Brighton Criteria 
At hospital admission 
Indicator of prognosis 
EGRIS tool 
At hospital 
admission* 
mEGOS tool 
At hospital admission and Day 7 
Yes 
Confirmatory assessment 
targeted within 7 days from 
hospital admission 
Suspected 
GBS 
Strength of diagnosis includes 
clinical assessment and CSF and 
NCV measures. Some tests may not 
be available until several days after 
hospital admission. 
• 
Confirmed GBS required to 
implement mEGOS.  
• 
At hospital admission (data 
that supports Brighton level 1 
or 2) may not be available.  
• 
Level 1 or 2 assessment 
required before mEGOS 
assessment i.e. Day 7 
Neurology 
consultation 

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12.7.10.1. Neurological Symptoms 
The following features should be considered as suggestive of a GBS diagnosis in clinical 
practice and the use of the Brighton criteria [Fokke, 2014] together with further 
neurological evaluation will be the basis for confirmation of diagnosis: 
Progressive weakness in legs and arms (sometimes initially only in legs): 
• 
Areflexia (or decreased tendon reflexes) in weak limbs 
 
Additional symptoms: 
• 
Progressive weakness phase lasts 2 to 4 weeks (often 2 weeks) 
• 
Relative symmetry of weakness 
• 
Cranial nerve involvement, especially bilateral weakness of facial muscles 
• 
Autonomic dysfunction 
• 
Pain 
 
12.7.10.2. Brighton Key Diagnostic Criteria 
At admission and confirmation within 7 days of admission: 
• 
Bilateral and flaccid weakness of limbs 
• 
Decreased or absent deep tendon reflexes in weak limbs 
• 
Monophasic course and time between onset – nadir 12 hours to 28 days 
• 
CSF cell count <50/µL 
• 
CSF protein concentration > normal value 
• 
Nerve conduction studies findings consistent with one of the subtypes of GBS 
• 
Absence of alternative diagnosis for weakness 
 
12.7.10.3. Erasmus Respiratory Insufficiency Score (EGRIS) 
Probability of acute risk first week following hospital admission of respiratory 
insufficiency [Walgaard, 2010].  
Parameters required at hospital admission: 
• 
Days of onset of weakness and admission 
• 
Facial and/or bulbar weakness at admission 
• 
Medical Research Council sum score 
 
12.7.10.4. Modified Erasmus GBS Outcomes Score (mEGOS) 
Parameters required at hospital admission and 7 days later [Walgaard, 2011]:  

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• 
Age at onset 
• 
Preceding diarrhoea (in 4 weeks preceding onset of weakness) 
• 
Medical Research Council sum score 
 
12.7.10.5. Summary of Diagnosis and Treatment for GBS 
Additional information on the diagnosis and management of GBS (Figure 6) can be 
found in a review article on GBS [Willison, 2016].  
Figure 6 
Diagnosis and Treatment of Guillain-Barré Syndrome (GBS)  
 
Abbreviations: EGRIS = Erasmus GBS Respiratory Insufficiency Score; GBS = Guillain-Barré Syndrome; 
ICU = intensive care unit; IVIg = intravenous immunoglobulin; TRF = treatment related fluctuation. 
Source with permission: Willison, 2016. 
 

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12.8. 
Appendix 8: Neurology Consultation – Further Guidelines 
for Signs and Symptoms Suggestive of Guillain-Barré 
Syndrome 
For patients presenting with neurological events, a confirmed diagnosis of peripheral 
neuropathy should be treated according to local guidelines and/or clinical practice.  
However, any patient with presenting signs and symptoms suggestive of GBS (see 
protocol, Section 12.7.10.1), must be further evaluated by a neurologist according to 
diagnostic guidance for GBS using the Brighton diagnostic criteria (Fokke, 2014] see 
Table 13 below). The initial assessment at hospital admission should be further verified 
within 7 days of initial assessment, following availability of all test results as listed: 
Table 13 
Brighton Diagnostic Criteria 
Diagnostic Criteria 
Level of Diagnostic Certainty 
1 
2 
3 
4 
Bilateral and flaccid weakness of limbs 
+ 
+ 
+ 
 
Decreased or absent deep tendon reflexes in weak limbs 
+ 
+ 
+ 
 
Monophasic course and time between onset-nadir 12 hours to 
28 days 
+ 
+ 
+ 
 
CSF cell count <50/L 
+ 
+1 
- 
 
CSF protein concentration > normal value 
+ 
1 
- 
 
Nerve conduction study findings consistent with one of the 
subtypes of GBS 
+ 
 
- 
 
Absence of alternative diagnosis for weakness 
+ 
+ 
+ 
+ 
1. 
If CSF not collected or results not available, nerve conduction studies must be consistent with diagnosis of GBS 
(modified from Fokke, 2014). 
+ = present; - = absent;  = present or absent; GBS = Guillain-Barré Syndrome. 
 
12.8.1. 
Additional Assessments for Suspected GBS at Hospital 
Admission 
12.8.1.1. 
Risk of Respiratory Insufficiency Assessment 
An assessment of the probability of risk of respiratory insufficiency during the first week 
following admission of suspected GBS is required using the Erasmus GBS Respiratory 
Insufficiency Score (EGRIS) tool (total score 0 to 7) [Walgaard, 2010]. 
Please access link to assessment tool and record total score in eCRF. 
https://qxmd.com/calculate/calculator_527/erasmus-gbs-respiratory-insufficiency-score-
egris 
Assessment at hospital admission to include: 
• 
Days of onset of weakness and admission  
• 
Facial and/or bulbar weakness at admission  

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• 
Medical Research Council score  
 
The Medical Research Council score includes assessment for 6 muscle groups, 
including shoulder abductors, elbow flexors, wrist extensors, hip flexors, knee extensors, 
and foot dorsiflexors on both sides. The MRC score of an individual muscle group range 
from 0 to 5: 
Assessment 
Score 
No visible contraction 
0 
Visible contraction without movement of the limb 
1 
Active movement of the limb, but not against gravity 
2 
Active movement against gravity over (almost) the full range 
3 
Active movement against gravity and resistance 
4 
Normal 
5 
Source: [Van Koningsveld , 2007]. 
The MRC total scores range from 60 (normal) to 0 (quadriplegic). The total score should 
be included in the eCRF assessment for EGRIS. 
12.8.1.2. 
Prognostic Tool for Assessment of GBS Outcome at Hospital 
Admission 
An assessment of prognosis using the modified Erasmus GBS Outcomes Score 
(mEGOS) (total score 0 to 9) for diagnosed cases of GBS [Walgaard, 2011] should also 
be performed. Early assessment following hospital admission includes assessment of the 
following: 
• 
Age (years) at onset:  ≤ 40, 41 – 60, > 60 
• 
Preceding diarrhoea (in 4 weeks preceding onset of weakness): absent/present 
• 
MRC sum score (see above): 0 – 30, 31 - 40, 41 – 50, 51 – 60 
 
Please access link to assessment tool and record total score in eCRF. 
https://qxmd.com/calculate/calculator_529/modified-erasmus-gbs-outcome-score-egos-
at-day-7-of-admission 
12.8.2. 
Assessments Post Hospital Admission for GBS 
12.8.2.1. 
Brighton Criteria 
The initial assessment at hospital admission should be further verified within 7 days of 
initial assessment, following availability of all test results. 

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12.8.2.2. 
Prognostic Tool for Assessment of GBS Outcome at Day 7 Post 
Hospital Admission 
An assessment of prognosis using the modified Erasmus GBS Outcomes Score 
(mEGOS) (total score 0 to 9) for diagnosed case of GBS [Walgaard, 2011]. Assessment 
following Day 7 hospital admission includes assessment of the following: 
• 
Age (years) at onset:  ≤ 40, 41 – 60, > 60 
• 
Preceding diarrhoea (in 4 weeks preceding onset of weakness): absent/present 
• 
MRC sum score (see above): 0 – 30, 31 - 40, 41 – 50, 51 – 60 
 
Please access link to assessment tool and record total score in eCRF. 
https://qxmd.com/calculate/calculator_529/modified-erasmus-gbs-outcome-score-egos-
at-day-7-of-admission 
• Brighton criteria - the initial assessment at hospital admission should be further 
verified within 7 days of initial assessment, following availability of all test results. 

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
1 2 4  
C or e  
 
 
C CI - T hi s s e cti o n c o nt ai n e d Cli ni c al O ut c o m e A s s e s s m e nt d at a c oll e cti o n q u e sti o n n air e s or i n di c e s, w hi c h ar e pr ot e ct e d b y t hir d p art y 
c o p yri g ht l a w s a n d t h er ef or e h a v e b e e n e x cl u d e d.

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12.10. 
Appendix 10: mTPI-2 Design Simulation Results 
Simulations on the mTPI-2 design were conducted assuming either a 10% or 20% 
toxicity rate for the low dose (0.1 × 109 – 0.8 × 109 transduced T cells) and a 10%, 20%, 
30%, or 40% toxicity rate for the high dose (1 × 109 – 8 × 109 transduced T cells). The 
maximum tolerated dose is defined as the dose with DLT rate of 30%. The simulation 
results are shown in the tables below which demonstrates that mTPI-2 is a robust study 
design under all scenarios.   
Table 14 shows the results of the simulation. Based on the preclinical evidence and 
observed GSK3337794 toxicity data, we assume the moderate (20%) or borderline (30%) 
high dose toxicities are the most likely scenarios for GSK3901961 & GSK3845097. For 
these scenarios, highlighted in bold, we see that average observed toxicity rate is very 
close to the true underlying rate for the high dose and lower than the true underlying rate 
for the low dose. The average number of participants who experienced DLTs at the high 
dose is less than 2 out of an average of 8 participants when there is a borderline toxicity 
rate and less than 2 out of an average of 7 participants if there is a moderate toxicity rate. 
These results support our claim that the chosen design will be protective against over 
dosing. Additionally, the maximum tolerated dose is chosen >91% of the time when there 
is a moderate toxicity rate in the high dose and >76% of the time when there is a 
borderline toxicity rate in the high dose, which shows that the design is robust in 
correctly choosing the correct MTD under different underlying dose-DLT rate models. 
Table 14 
Design Simulation Results 
True DLT 
rates 
Low: 0.1 
High: 0.1 
Low: 0.1 
High: 0.2 
Low: 0.1 
High: 0.3 
Low: 0.1 
High: 0.4 
Low: 0.2 
High: 0.2 
Low: 0.2 
High: 0.3 
Low: 0.2 
High: 0.4 
Average Observed Toxicity Rate 
Low Dose 
0.07 
0.09 
0.09 
0.09 
0.17 
0.18 
0.18 
High Dose 
0.10 
0.20 
0.30 
0.42 
0.20 
0.31 
0.43 
Average Number of DLTs 
Low Dose 
0.02 
0.08 
0.17 
0.30 
0.17 
0.37 
0.62 
High Dose 
0.60 
1.23 
1.90 
2.55 
1.21 
1.82 
2.42 
Average Sample Size 
Low Dose 
0.15 
0.76 
1.74 
2.94 
0.86 
1.88 
3.14 
High Dose 
6.02 
6.13 
6.30 
6.36 
6.04 
6.07 
6.03 
Total Dosed 
6.17 
6.89 
8.04 
9.29 
6.90 
7.95 
9.17 
Percent picked as Maximum Tolerated Dose (MTD) 
No Dose 
0.00 
0.00 
0.00 
0.00 
0.01 
0.02 
0.02 
Low Dose 
0.01 
0.07 
0.21 
0.42 
0.09 
0.22 
0.42 
High Dose 
0.99 
0.93 
0.79 
0.58 
0.91 
0.76 
0.55 
 

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12.11. 
Appendix 11: Abbreviations and Trademarks 
1L 
First line 
2L 
Second line 
ABW 
Adjusted body weight 
ACT 
Adoptive T-cell therapy 
AE 
Adverse event 
AESI 
Adverse events of special interest 
AIDP 
Acute inflammatory demyelinating polyneuropathy 
ALT 
Alanine aminotransferase 
ANC 
Absolute neutrophil count 
aPTT 
Activated Partial Thromboplastin Time 
ASCO 
American Society of Clinical Oncology 
AST 
Aspartate aminotransferase 
ATC 
Anatomical Therapeutic Chemical 
ATG 
Antithymocyte globulin 
AUC(0-t) 
Area under the concentration-time curve over the dosing interval 
BUN 
Blood urea nitrogen 
CA 
Competent Authority 
CAR 
Chimeric antigen receptor 
CBC 
Complete blood count 
CD3/CD4/CD8 
Cluster of differentiation 3/ cluster of differentiation 4/ cluster of 
differentiation 8 
CDC 
Center for Disease Control 
CFR 
Code of federal regulations 
cfDNA 
Cell-free DNA 
CI 
Confidence Interval 
CIOMS 
Council for international organizations of medical sciences 
CKD-EPI 
Chronic kidney disease epidemiology collaboration 
cm 
Centimetres 
Cmax 
Maximum observed concentration 
Cmin 
Minimum observed concentration; 
CMV 
Cytomegalovirus 
CNS 
Central nervous system 
CONSORT 
Consolidated standards of reporting trials 
CPD 
Confirmed progression 
CPK 
Creatine phosphokinase 
CR 
Complete response 
CRES 
CAR T-cell related encephalopathy syndrome 
CRF 
Case report form 
CRP 
C-reactive protein 
CRS 
Cytokine release syndrome 

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
Pr ot o c ol A m d 0 4  
 
1 2 7  
C or e  
 
C S R  
Cli nical st u d y re p ort  
C T  
C o m p ute d t o m o gra p h y  
C T C A E  
C o m m o n ter mi n ol o g y criteria f or a d verse e ve nts  
ct D N A  
Circ ulati n g t u m or D N A  
C T F G  
Cli nical Trial Facilitati o n Gr o u p  
C V  
Car di o vasc ular  
D  
Da y  
d L  
Decilitre  
 
 
D L C O  
Diff usi n g ca p acit y of t he l u n g f or car b o n m o n o xi de  
D N A  
De o x yri b o n ucleic aci d  
D O R  
D urati o n of res p o ns e  
E B V  
E pstei n -Barr vir us  
E C G  
Electr ocar di o gra m(s)  
E C H O  
Ec h ocar di o gra p h y  
e C O A  
electr o nic Cli nical O utc o me Assess me nt  
E C O G  
Easter n C o o perati ve O nc ol o g y Gr o u p  
e C R F 
Electr o nic case re p ort f or m  
E D T A  
Et h yle ne di a mi netetraacetic aci d  
E M A  
E ur o pea n Me dici nes A ge nc y  
E M G  
Electr o m y o gra p h y  
E O T  
E n d of treat me nt  
F D A  
F o o d a n d Dr u g A d mi nistrati o n  
F D G -P E T  
Fl u or o de o x y gl uc os e p ositr o n e missi o n t o m o gra p h y  
F E V 1  
F orce d e x pirat or y v ol u me i n 1 sec o n d  
F F P E  
F or mali n -fi x e d paraffi n-e m be d de d  
F S H  
F ollicle sti m ulati n g h or m o ne  
F V C  
F orce d vital ca p acit y  
G B S  
G u illai n-Barr é S y n dr o me  
G C L P  
G o o d cli nical la b orat or y practice  
G C P  
G o o d cli nical practice  
G -C S F  
Gra n ul oc yte c ol o n y -sti m ulati n g fact or 
G F R  
Gl o mer ular filtrati o n rate  
GI  
Gastr oi ntesti nal  
G S K  
Gla x os mit h kli ne  
G v H D  
Graft vers us h ost disease  
H b  
Hae m o gl o bi n  
H B V  
He patitis B vir us  
H Bs A g  
He patitis B s urface a nti ge n  
H bc A b  
He patitis B c ore a nti b o d y  
h C G  
h u ma n c h ori o nic g o na d otr o pi n  
H C V  
He patitis C vir us  
C CI

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
Pr ot o c ol A m d 0 4  
 
1 2 8  
C or e  
 
HI P A A  
Healt h i ns ura nce p orta bilit y a n d acc o u nta bilit y act  
HI V  
H u ma n i m m u n o deficie nc y vir us  
H L A  
H u ma n le u k oc yte a nti ge n  
hr  
H o ur  
H R T  
H or m o ne re pl ace m e nt t hera p y 
H T L V  
H u ma n T -l y m p h otr o pi c vir us 
I B 
I n v esti gat or’s br oc h ure 
I B W 
I d eal B o d y Wei g ht 
I C A N S 
I m m u ne Effect or Cell-Ass ociate d Ne ur ot o xicit y S y n dr o me  
I C E 
I m m u ne Effect or Cell-Ass ociate d E nce p hal o pat h y  
I C F 
I nf or me d c o ns e nt f or m 
I C H 
I nter nati o nal c o u n cil o n har m o nizati o n of tec h nical re q uire m e nts 
f or re gistrati o n of p h ar m ace uticals f or h u ma n use 
i C P D 
i R E CI S T c o nfir me d pr o gressi ve diseas e 
i C R 
i R E CI S T c o m plete res p o nse 
I E C 
I n d e pe n de nt et hics c o m mittees 
I F N 
I nterfer o n 
I F N 
I nterfer o n, ga m ma 
I g G 
I m m u n o gl o b uli n G 
I L 
I nterle u ki n 
I L-1 R  
I nterle u ki n-1 Rece pt or  
I N R 
I nter nati o nal n or malize d rati o 
 
 
i P R 
i R E CI S T pr o gressi ve dis ease 
ir A Es 
I m m u ne-relat e d A Es 
I R B 
I nstit uti o nal re vie w b o ar d 
i R E CI S T 
M o difie d R E CI S T  1. 1 f or i m m u ne -base d t hera pe utics  
i S D 
i R E CI S T sta ble disease 
I T T 
I nte nt t o treat 
I U D 
I ntr a uteri ne de vice  
i U P D 
i R E CI S T u nc o nfir me d pr o gressi ve diseas e 
I U S 
I ntr a uteri ne h or m o ne-rel easi n g s yst e m 
I V 
I ntr a ve n o us 
I V D 
I n vitr o c o m pa ni o n dia g n ostic de vice 
k g  
Kil o gra ms  
L A M  
Lactati o nal a me n orr h oea met h o d  
L D H  
Lactate d e h y dr o ge n ase  
L T F U  
L o n g -t er m f oll o w-u p  
m 2  
Meters s q uare d  
m A b  
M o n ocl o nal a nti b o d y  
M C H  
Mea n c or p us c ular h ae m o gl o bi n  
M C V  
Mi x e d cell v ol u me  
C C
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MCE 
Multi-component engineering 
MedDRA 
Medical dictionary for regulatory activities 
mg 
Milligram 
mITT 
Modified Intent to treat 
mL 
Millilitre 
L 
Microliter 
mm 
Millimetres 
MRCLS 
Myxoid/round cell liposarcoma 
MRI 
Magnetic resonance imaging 
MSDS 
Material Safety Data Sheet 
mTPI-2 
Modified Toxicity Probability Interval 2 
MUGA 
Multigated acquisition scan 
NA 
Not applicable 
NCI 
National Cancer Institute 
NE 
Not evaluable 
NIH 
National Institutes for Health 
NSAIDs 
Nonsteroidal anti-inflammatory drugs 
NSCLC 
Non-small-cell lung cancer 
NSCLC-SAC 
Non-small-cell lung cancer Symptom Assessment Questionnaire 
NY-ESO-1 
New York esophageal antigen-1 
NYHA 
New York Heart Association 
ORR 
Overall response rate 
OS 
Overall survival 
PBMC 
Peripheral blood mononuclear cell 
PCI 
Potential clinical importance 
PCP 
Pneumocystis carinii Pneumonia 
PCR 
Polymerase chain reaction 
PD 
Progressive disease 
PD-1 
Programmed death receptor-1 
PD-L1 
Programmed cell death ligand 1 
PD-L2 
Programmed cell death ligand 2 
PFS 
Progression-free survival 
PFT 
Pulmonary function test 
PI 
Principal Investigator 
PK 
Pharmacokinetics 
PR 
Partial response 
PS 
Performance status 
PT 
Prothrombin time 
QTc 
Corrected QT interval duration 
QTcB 
QT duration corrected for heart rate by Bazzetts’s formula 
QTcF 
QT duration corrected for heart rate by Fridericia’s formula 
RBC 
Red blood cell 

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
Pr ot o c ol A m d 0 4  
 
1 3 0  
C or e  
 
R E CI S T  
Res p o nse E val uati o n Criteria i n S oli d T u m ors  
R T -q P C R  
Re verse tr a nscri ptase p ol y m erase c hai n reacti o n  
R N A  
Ri b o n ucleic aci d  
S A E  
Seri o us a d verse e ve nt  
S A P  
Statistical A nal ysis Pla n  
S C T  
Ste m cell tra ns pla nt  
S D  
Sta ble disease  
S G O T  
Ser u m gl uta mic o x al oacetic tra nsa mi nase  
S G P T  
Ser u m gl uta mic p yr u vi c tra nsa mi nase  
S O A  
Sc he d ule of ass ess me nts  
S o C  
Sta n dar d of care  
S R M  
St u d y refere n ce ma n ual  
S R T  
Safet y R e vie w  Tea m  
S S  
S y n o vial sarc o ma  
S U S A R  
S us pecte d u ne x pecte d seri o us a d verse reacti o ns  
T 4  
T h yr o xi ne 4  
T C R  
T -cell rece pt or  
T G F  
Tra nsf or mi n g gr o wt h fact or  
T L C  
T otal l u n g ca pacit y  
T L Ts  
Treat me nt Li miti n g T o xicities  
T ma x  
Ti me t o ma xi m u m c o nce ntrati o n  
T M B  
T u m or m utati o nal b ur de n  
T M D D  
Tar get -me di ate d dr u g dis p ositi o n  
T M E  
T u m or micr oe n vir o n me nt  
T N F  
T u m or necr osis fact or  
T S H  
T h yr oi d sti m ulati n g h or m o ne  
 
 
U L N  
U p per li mit of n or mal  
U P D  
U nc o nfir me d pr o gressi o n  
 
 
W  
Wee k  
W B C  
W hite bl o o d cell  
W H O  
W orl d healt h or ga nizati o n  
W O C B P  
W o ma n of c hil d beari n g p ote ntial  
 
C CI
C CI
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Trademark Information 
Trademarks of the GlaxoSmithKline 
group of companies 
 
Trademarks not owned by the 
GlaxoSmithKline group of companies 
ADVAIR 
 
Chiron RIBA 
 
 
MedDRA 
 
 
SAS 
 
 
WinNonlin 
 
 

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12.12. 
Appendix 12: List of Substudies 
Substudy 
Number 
Substudy Title 
GSK number 
Anticipated 
number of 
participants 
Indications 
Countries where substudy 
will be active 
1 
GSK3901961 [NY-ESO-1(c259)TCR engineered T cells co-
expressing the α-chain of the CD8 co-receptor] in previously 
treated (2L+) HLA-A*02+ participants with NY-ESO-1 and/or 
LAGE-1a advanced SS, MRCLS, or NSCLC 
GSK3901961 
29 
SS, NSCLC, MRCLS 
Australia, Canada, 
Germany, Netherlands, 
Sweden, USA,  
2 
GSK3845097 [NYESO-1(c259) TCR engineered T cells co-
expressing the dnTGF-βRII receptor] in previously treated (2L+) 
HLA-A*02+ participants with NYESO-1+ and/or LAGE1a+ advanced 
SS or MRCLS 
GSK3845097 
19 
SS, MRCLS 
Australia, Canada, 
Germany, Netherlands, 
Sweden, USA, 
3 
GSK4427296 [NYESO-1(c259) TCR engineered T cells using the 
Epi-R manufacturing process] in previously treated (2L+) HLA-
A*02+ participants with NYESO-1+ and/or LAGE1a+ advanced SS 
or MRCLS 
GSK4427296 
19 
SS, MRCLS 
USA only 
Overall projected sample size 
67 
SS, NSCLC, MRCLS 
 

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12.13. 
Appendix 13: Master Protocol Document History  
DOCUMENT HISTORY 
Original protocol and all amendments listed in reverse chronological order. 
Master Protocol Format 
Amended Documents* 
Amendment Number 
Date 
Document Number 
Master Protocol  
split into separate documents 
Core Protocol 
Amendment 4 
27 May 2022 
 
TMF-14682560 
Substudy 1 
TMF-14682591 
Substudy 2 
TMF-14682598 
Substudy 3 
TMF-14682622 
Core Protocol 
Amendment 3 
20-December-2021 
TMF-14357914 
Substudy 1 
TMF-14357929 
Substudy 2 
TMF-14357930 
Substudy 3 (new) 
TMF-14357932 
Master Protocol  
as single document 
Master Protocol with 3 sections:  
Core, Substudy 1 and Substudy 2 
Amendment 2 
04-November-2021 
TMF-14137790 
Amendment 1 
21-May-2021 
TMF-13779299 
Original Protocol 
02-December-2019 
2019N419717_00 
*  The most current version of each document is in bold and underlined. 
 

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13. 
PROTOCOL AMENDMENT HISTORY 
The Protocol Amendment Summary of Changes Table for the current amendment is 
located directly before the Table of Contents (TOC). Below is history of prior protocol 
amendments. 
13.1. 
Amendment 1 (21 May 2021) 
Overall Rationale for Amendment 1: 
The primary rationale for protocol Amendment 1 is . 
1. Changes to Substudy 1 and 2 Inclusion criteria relative to disease status requirements 
to allow participants with advanced disease diagnosis to undergo target expression 
screening; participants with evidence of radiological or clinical disease progression 
will be able to undergo leukapheresis; initiation of lymphodepletion will require 
evidence of disease progression from prior line of therapy by RECIST v1.1.  
2. Changes to Substudy 1 Inclusion and Exclusion criteria language relative to prior 
lines of treatments for NSCLC participants to allow those who have received any 
PD-1/PD-L1 checkpoint blockade therapy and, in the same or different line of 
treatment, any platinum containing chemotherapy. NSCLC participants with 
actionable genetic aberrations may also be included if they have exhausted the 
targeted standard of care therapy. 
3. Clarifications to Substudy 1 and 2 lymphodepleting chemotherapy dose adjustments 
to ensure adequate consideration given to prior anti-cancer therapies (systemic and 
radiation exposure), renal function (for fludarabine) as well as use of adjusted body 
weight (for cyclophosphamide when necessary).   
4. Protocol language optimization to harmonize with program.  
5. Allowing potential future inclusion of a limited number of patients who progressed 
following clinical benefit (PR, CR, SD >/= 3 months) from infusion with letetresgene 
autoleucel (GSK3377794, lete-cel) on a GSK sponsored trial. 
 

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
Pr ot o c ol A m d 0 4  
 
1 3 5  
C or e  
 
S e cti o n # a n d N a me  
D e s cri pti o n of C h a n g e  
Bri ef R ati o n al e  
C ore pr ot o c ol  
1.  Sy n o psis  
4.  O bj ectiv es a n d E n d p oi nts  
R ef or m att e d S ec o n d ary O bj ectiv es a n d 
E n d p oi nts i nt o “ Sec o n d ary –  Effic acy”, 
“ S ec o n d ary –  Saf ety” a n d “ Sec o n d ary –  
P h ar m ac oki n etics”.  
C o m bi n e d Fr e q u e ncy a n d s ev erity of 
A dv ers e Ev e nts ( A Es), S eri o us A Es ( S A Es) 
a n d A Es of Sp eci al I nt er est ( A E SIs) as o n e 
si n gl e e n d p oi nt. 
O pti miz e d d escri pti o n of Sec o n d ary –  
P h ar m ac oki n etics o bj ectiv es a n d 
e n d p oi nts.  
U p d at e d list of  a b br evi ati o ns.  
T o cl arify s u bc at e g ori es of s ec o n d ary 
o bj ectiv es.  
 
 
St a n d ar diz ati o n of r e p orti n g.  
 
 
 
Cl arific ati o n of Ph ar m ac oki n etics 
pl a n.  
 
Fi n aliz ati o n of t a bl e.  
1.  Sy n o psis  
5.  D esi g n  
 
Mi n or u p d at e t o st u dy sc h e m a:  
- 
T o st a n d ar diz e d esi g n at e d p o p ul ati o ns 
as p artici p a nts wit h r el a ps e d/r efr act ory 
a dv a nc e d t u m ors.  
- 
T o st a n d ar diz e d esi g n at e d S S 
p o p ul ati o n i n S u bst u di es 1 a n d 2 as 
p artici p a nts wit h “ m et ast atic or 
u nr es ect a bl e” S S.  
- 
T o st a n d ar diz e d esi g n at e d  
N S C L C p o p ul ati o n i n Su bst u dy 1 as 
p artici p a nts wit h “ m et ast atic” N S C L C.  
H ar m o niz ati o n of p o p ul ati o n 
d esi g n ati o ns t hr o u g h o ut pr ot oc ol.  
1.  Sy n o psis  
5.  D esi g n  
 
I ncl usi o n of d et ail e d d escri pti o n of 
P artici p a nt J o ur n ey, i n ali g n m e nt wit h 
Fi g ur e 1 P artici p a nt J o ur n ey Sc h e m a.  
I ncl usi o n of pr ovisi o n f or all o wi n g t ar g et 
ex pr essi o n scr e e ni n g t ests, l e uk a p h er esis 
a n d m a n uf act ur e t o b e c o n d uct e d u n d er 
s e p ar at e G S K-s p o ns or e d pr ot oc ol or 
s u bst u dy of t his pr ot oc ol. 
Cl arific ati o n of Partici p a nt J o ur n ey 
st e ps.  
 
T o f acilit at e pr e -scr e e ni n g ( ev e nt u ally 
p erf or m e d i n ot h er pr ot oc ols), a n d t o 
all o w f or r e -all oc ati o n of p artici p a nts 
o nt o ot h er s uit e d 
pr ot oc ols/s u bst u di es w h e n av ail a bl e.  
1.  Sy n o psis  
5.  D esi g n  
O pti miz ati o n of Tr e at m e nt Fit n ess a n d 
Eli gi bility crit eri a pri or t o Ly m p h o d e pl eti o n  
R e m ov e d r e q uir e m e nt f or r e p etiti o n 
of all eli gi bility crit eri a ass ess m e nts 
t h at w er e alr e a dy m et pri or t o 
l e uk a p h er esis. R e pl ac e d by a 
Tr e at m e nt Fit n ess ass ess m e nt of t h e 
s af ety crit eri a i n c o ns ult ati o n wit h 
M e dic al M o nit or.  
3. 2 B ack gr o u n d  
3. 2. 2  G S K 3 3 7 7 7 9 4 
(l et etr es g e n e a ut ol e uc el, 
l et-c ell) 
R e m ov e d t a bl e of G S K3 3 7 7 7 9 4  
Cli nic al st u di es.  
T o r ef oc us b ack gr o u n d s ecti o n a n d 
i m pr ov e r e a d a bility of d oc u m e nt. 
C CI

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
Pr ot o c ol A m d 0 4  
 
1 3 6  
C or e  
 
S e cti o n # a n d N a me  
D e s cri pti o n of C h a n g e  
Bri ef R ati o n al e  
5. 1.  Ov er all D esi g n  
I ncl u d e d r ef er e nc e t o d efi niti o n of s e nti n el 
p artici p a nt as t h os e t o r ec eiv e s plit d osi n g 
p er C or e S ecti o n 8. 1. 2.  
T o b ett er i ntr o d uc e w h at a s e nti n el 
p artici p a nt is.  
5. 3.  N u m b er of P artici p a nts  
Cl arific ati o n of pr oj ect e d n u m b er of 
p artici p a nts ( 4 8) ex p ect e d f or d os e 
c o nfir m ati o n a n d ex p a nsi o n i n Su bst u di es 1 
a n d 2 c o m bi n e d.  
Cl arifi e d s a m pl e siz e pr oj ecti o n.  
6. 2.  Scr e e ni n g u n d er ot h er 
G S K st u di es ( n e w s ecti o n 
a d d e d)  
P artici p a nts scr e e n e d or e nr oll e d i n ot h er 
G S K st u di es m ay b e c o nsi d er e d f or 
e nr oll m e nt t o t his st u dy, w h er e it is I R B/I E C 
a p pr ov e d, o n a c as e -by -c as e sc e n ari o. 
T o all o w f or  t ar g et ex pr essi o n 
eli gi bility of p artici p a nts scr e e n e d 
u n d er ot h er G S K st u di es u n d er 
i d e ntic al t esti n g c o n diti o ns 
6. 3.  R escr e e ni n g/ Tr a nsf er 
( n e w s ecti o n a d d e d)  
P artici p a nts w h o w er e scr e e n f ail ur e / 
wit h dr a w n pri or t o T -c ell a d mi nistr ati o n m ay 
b e r escr e e n e d i n t h e s a m e st u dy/s u bst u dy 
or tr a nsf err e d t o a ny a p plic a bl e G S K -
s p o ns or e d st u dy or s u bst u dy of t his 
pr ot oc ol.  
R escr e e ni n g, l e uk a p h er esis pr oc e d ur e or 
m a n uf act ur e pr oc ess m ay b e w aiv e d aft er 
c o ns ult ati o n wit h Sp o ns or. 
T o all o w f or r e -all oc ati o n of 
p art ici p a nts o nt o ot h er s uit e d 
pr ot oc ols/s u bst u di es w h e n av ail a bl e, 
a n d f or t h e p ossi bility of ski p pi n g 
st e ps t h at h av e alr e a dy b e e n 
c o m pl et e d u n d er t h e ori gi n al 
c o m p ar a bl e pr ot oc ol, aft er 
c o ns ult ati o n wit h Sp o ns or. 
8. 1.  Disc o nti n u ati o n of 
St u dy I nt erv e nti o n  
8. 1. 1  Si n gl e D os e 
A d mi nistr ati o n  
I ntr o d uc e d r ef er e nc es f or d os e 
a d mi nistr ati o n, s af ety ass ess m e nt a n d 
m o nit ori n g, f or r e p orti n g of A Es, a n d 
s u p p ortiv e c ar e g ui d a nc e. 
I ncl u d e d i nstr ucti o ns f or r es u mi n g i nf usi o n 
w h e n i nf usi o n -r el at e d r e acti o n Gr a d e ≤2 
r es olve d t o Gr a d e < 1.  
Ad d e d r ef er e nc es f or si n gl e d os e 
a d mi nistr ati o n a n d i nstr ucti o ns f or 
p ot e nti al r es u mi n g c o n diti o ns aft er 
i nf usi o n-r el at e d r e acti o n. 
8. 2. 3.  T e m p or ary 
Disc o nti n u ati o n  
A d dr essi n g s ev er e r e acti o ns ass oci at e d 
wit h liv er t oxiciti es i n b et w e e n t h e 2 s plit 
d os es i nf usi o n.  
Cl arific ati o n of i nstr ucti o ns.  
9. 1. 2.  G S K S af ety R evi e w 
T e a m  
M a n d at e d St u dy P a us e 
D u e t o G B S  
P ar a gr a p h o n M a n d at e d St u dy P a us e D u e 
t o G B S r e m ov e d b ec a us e r e d u n d a nt wit h 
S ecti o n 8. 5.  
R e m ov e d r e d u n d a ncy.  
9.  St u dy Ass ess m e nts a n d 
Pr oc e d ur es  
9. 1. 5.  Vit al Si g ns  
Cl arifi e d t h at bl o o d pr ess ur e, p uls e 
m e as ur e m e nts, r es pir at ory r at e a n d b o dy 
t e m p er at ur e s h o ul d b e ass ess e d by 
i nstit uti o n al st a n d ar ds. 
O pti miz e d w or di n g t o m ak e t h e or d er of 
ass ess m e nts b et w e e n vit al si g ns, E K G a n d 
bl o o d dr a w s a r ec o m m e n d ati o n r at h er t h a n 
a r e q uir e m e nt.  
Will all o w sit es t o us e l oc al 
i nstit uti o n al g ui d a nc e.  
9. 1. 6 C ar di ac Ass ess m e nts  
A d diti o n of s er u m tr o p o ni n a n d N -t er mi n al 
pr o B -ty p e n atri ur etic p e pti d e ( N T-pr o B N P) 
/ B N P t ests 
Ad diti o n of c ar di ac  
 t ests as 
p art of r e q uir e d b as eli n e visit 
ass ess m e nts  
C CI

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
Pr ot o c ol A m d 0 4  
 
1 3 7  
C or e  
 
S e cti o n # a n d N a me  
D e s cri pti o n of C h a n g e  
Bri ef R ati o n al e  
9. 2.  A dv ers e Ev e nts a n d 
S eri o us A dv ers e Ev e nts  
U p d at e d d efi niti o n of D el ay e d A Es t o ali g n 
wit h u p d at e d F D A g ui d a nc e [ F D A, 2 0 2 0 a].  
I ncl u d e d Fi g ur e 3 Ti m e P eri o d f or 
C oll ecti n g A E a n d S A E I nf or m ati o n as 
vis u al ai d t o f oll o w A E/ S A E r e p orti n g 
i nstr ucti o ns 
Cl arify t h at A E SIs will b e r e p ort e d t o t h e 
S p o ns or ( M e dic al M o nit or or d es i g n e e) 
wit hi n 2 4 h o urs vi a e -m ail (s e e S R M f or 
f urt h er i nstr ucti o ns. 
U p d at e d d efi niti o ns of 6 c at e g ori es of 
d el ay e d A Es p er F D A.  
H ar m o niz e d c o m m u nic ati o n o n 
A E/ S A E c oll ecti o n.  
 
Cl arific ati o n of A E SI r e p orti n g 
i nstr ucti o ns. 
9. 2. 5.  Pr e g n a ncy  
Cl arifi e d c o ntr ac e pti o n p eri o d d ur ati o n t o 
s p ecify a mi ni m u m of 1 2 m o nt hs fr o m st art 
of T -c ell i nf usi o n. 
I ncl u d e d a d diti o n al c o ntr ac e pti o n 
r e q uir e m e nts a p plic a bl e t o t h e us e of 
fl u d ar a bi n e a n d cycl o p h os p h a mi d e 
c h e m ot h er a pi es. 
A d d e d i nstr ucti o n t o I nv esti g at or t o a dvis e 
p artici p a nts o n t h e c o ns erv ati o n of s p er m 
pri or t o i niti ati n g tr e at m e nt.   
F or p artici p a nts w h o h av e p ersisti n g 
G S K 3 3 7 7 7 9 4 b ey o n d 1 2 m o nt hs p ost 
i nf usi o n: o nc e p ersist e nc e t est r es ults s h o w 
b el o w l ev el of d et ecti o n f or 2 c o ns ec utiv e 
ti m es, S p o ns or will n otify t h e sit e t h at 
c o ntr ac e pti o n p eri o d r e q uir e m e nt is ov er. 
Cl arific ati o n of c o ntr ac e pti o n 
r e q uir e m e nts. 
9. 2. 7   A dv ers e Ev e nts of 
S p eci al I nt er est ( A E SIs)  
A d d e d i nstr ucti o ns f or Gr a d e 3 or hi g h er 
A E SI of Gv H D t o  b e als o r e p ort e d as a n 
S A E wit hi n 2 4 h o urs.  
U p d at e d i nstr ucti o ns.  
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Section # and Name 
Description of Change 
Brief Rationale 
9.3.1 Evaluation of Anti-
Cancer Activity 
Clarification that in cases where contrast 
enhanced CT is contraindicated, a 
Magnetic Resonance Imaging (MRI) of the 
abdomen/pelvis (with and without 
gadolinium contrast), and an MRI (with and 
without gadolinium contrast) or a non-
contrast enhanced CT of the chest is 
acceptable.  
Clarification of imaging modalities.   
9.10.1. Tumor Biopsy 
Clarification of time points for biopsy 
collections (Baseline, Week 4 and 
progression). 
Wording optimization.  
9.10.9. Genetic Blood 
Sample (section added) 
Section added 
Added clarification on genetic 
analysis plan. 
10.4. Populations for 
Analyses 
- 
Screened Population was amended to 
include “All participants who signed an 
ICF to participate in the study” 
- 
Enrolled and Intent-To-Treat (ITT) 
populations were amended to the 
same definition of  “All participants who 
started leukapheresis procedure” 
- 
Modified Intent-To-Treat (mITT) 
population was amended to include  
“All participants who received any dose 
of NY-ESO-1 specific T cells” 
Optimization and harmonization of 
Populations for analyses:at program 
level. 
12.1.10 Remote Monitoring 
and Source Data 
Verification 
Addition of provision that when onsite 
monitoring is not permissible due to 
site/local restrictions (such as with epidemic 
and/or pandemic), remote monitoring may 
be employed that ensures all of the 
following requirements are met 
Clarification on remote monitoring.  
12.2. Appendix 2: Clinical 
Laboratory Tests 
Specified that for Clinical Chemistry BUN, 
both BUN or UREA tests are acceptable. 
Addition of Fibrinogen as part of the 
Coagulation test requirements 
Addition of Ferritin, serum troponin,  
NT-proBNP / BNP as part of the Other 
Tests. 
Clarification of laboratory tests. 
12.4.2 Contraception 
guidance 
Added potential risks to fetus linked to 
treatment with fludarabine and 
cyclophosphamide. 
Added risk that cyclophosphamide 
treatment may result in partial or total 
sterility in male participants.   
To clarify risks to fetus and to male 
sterility linked to treatment with 
lymphodepleting chemotherapy 
regimen in response to regulatory 
agency’s request. 

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Section # and Name 
Description of Change 
Brief Rationale 
12.7.5. Management of 
Cytokine Release 
Syndrome (CRS) 
Addition of monitoring requirement for 
suspected CRS, with chemistry, 
hematology, ferritin, coagulation, C reactive 
protein, troponin and NT-proBNP / BNP 
labs. 
Addition of monitoring requirement on left 
ventricular ejection fraction for suspected 
CRS. 
Clarified posology for tocilizumab and 
alternative options for participants not 
responding to tocilizumab. 
Additions of monitoring requirements 
for CRS according to SITC 2020 
guideline on immune effector cell-
related adverse events. 
12.7.8. Management of 
Immune Effector Cell-
Associated Neurotoxicity 
Syndrome (ICANS) 
Clarification that Brain MRI must be taken 
at screening and repeated at baseline if 
more than 4 months have elapsed between 
screening MRI and baseline. 
Addition of monitoring requirement for 
suspected ICANS, with chemistry, 
hematology, ferritin, coagulation, and 
C-reactive protein labs. 
Clarification of ICANS management table 
Addition that tocilizumab may worsen 
ICANS in some situations. 
Clarification on Brain MRI 
requirements for reference 
assessments. 
 
Additions of monitoring requirements 
for ICANS according to SITC 2020 
guideline on immune effector cell-
related adverse events. 
12.7.10. Management of 
Guillain-Barré Syndrome 
(GBS) 
12.8 Appendix 8: Neurology 
Consultation – Further 
Guidelines for Signs and 
Symptoms Suggestive of 
Guillain-Barré Syndrome 
(new) 
Added cross reference to new Appendix 8 
for Neurology Consultation. 
Added Appendix 8 for further guidelines for 
Signs and Symptoms Suggestive of 
Guillain-Barré Syndrome (GBS) 
To clarify diagnosis of GBS. 
12.7.2.2 Herpex Simplex 
and Varicella Zoster and 
Epstein Barr virus (EBV) 
 
12.7.2.4 Hepatitis B 
prophylaxis 
Clarified that prophylaxis for herpex simplex 
and varicella zoster should be initiated prior 
to lymphodepletion. 
Clarified that additional considerations on 
Hepatitis B prophylaxis (acceptable 
regimens included) will be left to the 
Investigator’s discretion in accordance with 
label recommendations and institutional 
guidelines. 
To clarify Infection prophylaxis 
language. 

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Section # and Name 
Description of Change 
Brief Rationale 
Substudy 1 
2.  Schedule of activities 
Table 1. Substudy 1 
Schedule of Activities – 
Screening and 
Leukapheresis 
Footnote #1 (Table 1) has been amended 
to state that consent for Leukapheresis and 
Treatment must be repeated if given more 
than 90 days prior to leukapheresis 
procedure. 
Minor wording clarifications for footnotes 
#3, 5 and 8. 
Footnote #4 clarifies that optional Genetics 
sample “may be collected any time from 
signature of optional consent until 
leukapheresis”. 
Footnote #9 clarifies that “CD3 count prior 
to leukapheresis should preferably be 
performed with 24 hours prior to 
leukapheresis procedure”. 
Footnote #10 aligns with Core Protocol 
Section 9.1.5 on Vital Signs collection, 
allowing institutional standard methods for 
collection. 
Footnote #17 added to reference details of 
renal assessment in Substudy 1 
Section 6.1 Table 9. 
Clarification and alignment of SOA 
with other section changes 

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
Pr ot o c ol A m d 0 4  
 
1 4 1  
C or e  
 
S e cti o n # a n d N a me  
D e s cri pti o n of C h a n g e  
Bri ef R ati o n al e  
2.   Sc h e d ul e of activiti es  
T a bl e 2.  S u bst u dy 1 
Sc h e d ul e of Activiti es –  
I nt erv e nti o n al P h as e 
( Ly m p h o d e pl eti o n, 
Tr e at m e nt a n d F oll o w -u p) 
A n d  
T a bl e 4.  S u bst u dy 1 
Sc h e d ul e of Activiti es –  
I nt erv e nti o n al P h as e 
( Ly m p h o d e pl eti o n, 
Tr e at m e nt a n d F oll o w -u p) 
f or S plit D osi n g 
A d d e d st a n d ar d m et h o d of c o nv ersi o n f or 
c al e n d ar visit sc h e d uli n g b et w e e n m o nt h t o 
w e ek, a n d w e ek t o d ay.  
C o m bi n e d Tr a ns g e n e C o pi es ( Persist e nc e 
f or S af ety) a n d 
 r o ws 
i nt o o n e as o nly o n e s a m pl e will b e 
c oll ect e d t o p erf or m b ot h t ests. 
F o ot n ot e #1 6 cl arifi e d t o i nstr uct t h at 
“ C T/ M RI ass ess m e nts o nly n e e d t o 
c o nti n u e u ntil c o nfir m e d P D”.  
A d d e d r e q uir e m e nt f or f erriti n, tr o p o ni n a n d 
N T -pr o B N P / B N P t est pri or t o 
Ly m p h o d e pl eti o n ( T a bl e 2)  
A d d e d C o a g ul ati o n ass ess m e nts f or 
b as eli n e, D ay 1 t hr u 4, D ay 6, D ay 8, a n d 
D a y 1 5 ( T a bl e 2) 
I ncl u d e d r e q uir e m e nt f or s us p ect e d C R S or 
I C A N S t o m o nit or c h e mistry, h e m at ol o gy, 
f erriti n, c o a g ul ati o n a n d C r e activ e pr ot ei n 
l a bs, d aily f or a w e ek t h e n ev ery ot h er d ay 
u ntil sy m pt o ms ar e i m pr ovi n g or a n 
alt er n ativ e di a g n osis is c o nfir m e d.  I ncl u d e d 
r e q uir e m e nt f or m o nit ori n g of tr o po ni n a n d 
N T -pr o B N P / B N P l a bs f or C R S gr a d e ≥2 as 
cli nic ally i n dic at e d. 
Mi n or cl arific ati o ns t o f o ot n ot e #3 3 t o 
ext e n d wi n d o w of c oll ecti o n of g e n etic 
s a m pl e u ntil first d ay of ly m p h o d e pl eti o n 
a n d f o ot n ot e #3 4 t o cl e arly i d e ntify st art of 
ly m p h o d e pl eti o n d ay p er i n dic ati o n. 
Cl arific ati o n a n d ali g n m e nt of S O A 
wit h ot h er s ecti o n c h a n g es  
 
 
 
 
 
 
 
 
Ad diti o n of c ar di ac  
 a n d 
c o a g ul ati o n t ests. 
 
 
 
 
Cl arific ati o n of sc h e d ul e of 
ass ess m e nt f or s us p ect e d C R S or 
I C A N S. 
 
 
 
 
 
 
Cl arific ati o n of S O A f o ot n ot es.  
2.   Sc h e d ul e of activiti es  
T a bl e 3.  S u bst u dy 1 
Sc h e d ul e of Activiti es –  P K, 
I m m u n o g e nicity, a n d 
 - I nt erv e nti o n al 
P h as e ( Tr e at m e nt a n d 
F oll o w -u p)  
A n d  
T a bl e 5.  S u bst u dy 1 
Sc h e d ul e of Activiti es –  P K, 
I m m u n o g e nicity, a n d 
 - I nt erv e nti o n al 
P h as e ( Tr e at m e nt a n d 
F oll o w -u p) f or S plit D osi n g  
Cl arifi e d t h at S a m pl e Ty p e f or d n T G F -RII 
s h o ul d b e “ w h ol e bl o o d” i nst e a d of P B M C.  
R e m ov al of D ay 6 4 si nc e W e ek 1 0 visit is 
n ot s h o wi n g o n t h e t a bl e ( p er f o ot n ot e #1).  
U p d at e d R e q uir e m e nt f or o n -st u dy bi o psy 
at W e ek 4 i nst e a d of W e ek 6 ( F o ot n ot e #9 
s p ecifi es t h at t h e wi n d o w of c oll ecti o n f or 
t h e W e ek 4 bi o psy is ext e n d e d fr o m D ay 2 1 
t o D ay 3 9). 
C orr ect e d sc h e d ul e of c oll ecti o n f or 
Cyt oki n e A n alys es (r e m ov al of W e ek 5, 7 
a n d 9 c oll ecti o ns)  
U p d at e d f o ot n ot e #5 r el at e d t o c oll ecti o n of 
cyt oki n es w h e n C R S is s us p ect e d, t o 
r ef er e nc e l oc al l a bor at ory  m o nit ori n g  
Cl arific ati o n a n d ali g n m e nt of S O A 
wit h ot h er s ecti o n c h a n g es  
C CI
C CI
C CI
C CI

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
Pr ot o c ol A m d 0 4  
 
1 4 2  
C or e  
 
S e cti o n # a n d N a me  
D e s cri pti o n of C h a n g e  
Bri ef R ati o n al e  
2.   Sc h e d ul e of activiti es  
T a bl e 6.  S u bst u dy 1  
Sc h e d ul e of Activiti es –  
F oll o w -u p aft er Dis e as e 
Pr o gr essi o n or aft er 
C o m pl eti o n of I nt erv e nti o n al 
P h as e F oll o w -u p  
C o m bi n e d Tr a ns g e n e C o pi es ( Persist e nc e 
f or S af ety) a n d 
 r o ws 
i nt o o n e as o nly o n e s a m pl e will b e 
c oll ect e d t o p erf or m b ot h t ests. 
Cl arifi e d l a n g u a g e t o ali g n wit h L o n g -t er m 
F oll o w -u p St u dy 2 0 8 7 5 0, i ncl u di n g:   
- 
D isc o nti n u ati o n of p ersist e nc e 
 
m o nit ori n g at  ≥2 y e ar p ost T -c ell 
i nf usi o n  f or p artici p a nts w h os e 
tr a ns d uc e d T c ells ar e u n d et ect e d f or 2 
c o ns ec utiv e visit ass ess m e nts  
- 
A ll o w m e dic al ev al u ati o ns t o t ak e pl ac e 
vi a t el e m e dici n e ( e. g. p h o n e c all or 
vi d e o c o nf er e nc es) a n d/ or h o m e 
h e alt hc ar e w h er e c o u ntry a n d/ or l oc al 
r e g ul ati o ns all o w 
- 
A d d e d o pti o n of r e m ot e visits f or y e ars 
6 -1 5  
Cl arific ati o n a n d ali g n m e nt of S O A 
wit h ot h er s ecti o n c h a n g es  
3. 2. 1 Risk Ass ess m e nt  
T a bl e 7. Risk Miti g ati o n 
Str at e gy  
C orr ect e d r ef er e nc e t o I P as G S K 3 9 0 1 9 6 1 
f or S u bst u dy 1.  
U p d at e d risk ass ess m e nt t a bl e:  
- 
T o i ncl u d e risks of d ecr e as e d visi o n 
a n d p eri p h er al n e ur o p at hy f or 
ly m p h o d e pl eti n g ch e m ot h er a py 
(fl u d ar a bi n e/cycl o p h os p h a mi d e);  
- 
T o i ncl u d e/ a m e n d risks of 
h a e m at o p oi etic cyt o p e ni as, 
hy p ers e nsitivity, r e activ ati o n of 
pr evi o us vir al i nf ecti o ns aft er pr ol o n g e d 
l e uk o p e ni a, n e utr o p e ni a (i ncl u di n g f at al 
n e utr o p e ni a) d ecr e as e d visi o n, t o T C R -
T i nf usi o n  
- 
T o r e m ov e risk of p ul m o n ary t oxicity as 
it s h o ul d o nly b e s p ecific t o s u bst u dy 2. 
U p d at e t o risk miti g ati o n.  
C CI
C CI

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
Pr ot o c ol A m d 0 4  
 
1 4 3  
C or e  
 
S e cti o n # a n d N a me  
D e s cri pti o n of C h a n g e  
Bri ef R ati o n al e  
4. O bj ectiv es a n d E n d p oi nts  
 
R ef or m att e d S ec o n d ary O bj ectiv es a n d 
E n d p oi nts i nt o “ Sec o n d ary –  Effic acy” a n d 
“ S ec o n d ary –  Ph ar m ac oki n etics”.  
C o m bi n e d Fr e q u e ncy a n d s ev erity of 
A dv ers e Ev e nts ( A Es), S eri o us A Es ( S A Es) 
a n d A Es of Sp eci al I nt er est ( A E SIs) as o n e 
si n gl e e n d p oi nt. 
O pti miz e d  d escri pti o n of Sec o n d ary –  
P h ar m ac oki n etics o bj ectiv es a n d 
e n d p oi nts.  
U p d at e d list of a b br evi ati o ns.  
T o cl arify s u bc at e g ori es of s ec o n d ary 
o bj ectiv es.  
 
St a n d ar diz ati o n of r e p orti n g.  
 
 
 
Cl arific ati o n of Ph ar m ac oki n etics 
pl a n.  
F i n aliz ati o n of t a bl e. 
5. 1. 1. D os e C o nfir m ati o n 
P h as e  
A n d  
6. 1 F or m er I ncl usi o n #1 0 
( d el et e d)  
A n d  
6. 1 F or m er I ncl usi o n #1 6 
( n o w I ncl usi o n #1 3)  
A n d  
6. 2 F or m er Excl usi o n #1 
( d el et e d) 
C o h ort 1 m et ast atic N S C L C p artici p a nts 
m ust h av e r ec eiv e d pri or t o 
ly m p h o d e pl eti o n (I ncl usi o n #1 3) a 
P D -1/ P D -L 1 c h eck p oi nt bl ock a d e t h er a py 
“a n d, i n t h e s a m e or diff er e nt li n e of 
tr e at m e nt, a pl ati n u m c o nt ai ni n g 
c h e m ot h er a py, or p artici p a nt is i nt ol er a nt t o 
it”.   
C o h ort 1 m et ast atic N S C L C p artici p a nts 
ar b orri n g a n acti o n a bl e g e n etic a b err ati o n 
( e. g., B R A F, AL K/ R O S 1) p er N C C N 
g ui d eli n es, m ust als o h av e r ec eiv e d pri or t o 
ly m p h o d e pl eti o n (I ncl usi o n #1 3) “t h e 
st a n d ar d of c ar e ( S O C) t ar g et e d t h er a py as 
r ec o m m e n d e d by N C C N or e q uiv al e nt 
c o u ntry-l ev el g ui d eli n es ( e. g., E S M O, 
NI C E)”.  
Cl arific ati o n o n dis e as e 
c h ar act eristics f or i ncl usi o n of 
C o h ort  1 N S C L C p artici p a nts.  
R e m ov al of a ny r e q uir e m e nt of 
s p ecific a nti-c a nc er tr e at m e nt pri or t o 
l e uk a p h er esis. 
5. 1. 1. 1 D et er mi ni n g t h e 
R 2 P D  
 
Mi n or cl arific ati o n t o t h e R P2 D s u g g est e d 
d os e w hic h will h av e ≥6  p artici p a nts tr e at e d 
at t his d os e a n d a n o bs erv e d t oxicity r at e 
≤1/ 3.  
Cl arific ati o n of t hr es h ol d f or 
s u g g est e d R P2 D d os e. 
5. 1. 3 P artici p a nt J o ur n ey  
 
O pti miz ati o n of w or di n g t o Partici p a nt 
j o ur n ey d escri pti o n t o ali g n wit h e q uiv al e nt 
C o r e Pr ot oc ol Secti o n 5. 2.  
Ali g n m e nt of w or di n g wit h e q uiv al e nt 
C or e pr ot oc ol s ecti o n  
C CI

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Brief Rationale 
5.1.4 Tumor Biopsies (new 
section added) 
And  
6.1 Former Inclusion 
Criterion #5 (now Inclusion 
Criterion #3) 
6.1 Inclusion Criterion #24  
Added requirements for on-study tumor 
biopsies 
 
A representative tumor tissue specimen 
[archived or fresh biopsy] with associated 
pathology report should be available to 
perform NY ESO 1 antigen expression 
analysis unless an appropriate recent 
NY-ESO-1 expression result is already 
available.  
Clarification of requirements for baseline 
biopsy. 
Clarification. 
5.3 End of Substudy 
definition 
Clarification of end of Interventional Phase 
and end of substudy for individual 
participants as well as for the entire 
substudy/cohort  
Clarification of patient disposition 
5.1 Overall Design 
6.1 Inclusion Criteria 
6.2 Exclusion Criteria 
Optimization of Treatment Fitness and 
Eligibility criteria prior to Lymphodepletion 
Removed requirement for repetition 
of all assessments for eligibility 
criteria that were already met prior to 
leukapheresis. Replaced by a 
Treatment Fitness assessment of the 
safety criteria in consultation with 
Medical Monitor.  
6.1 Former Inclusion #6 
moved to Inclusion #4   
Clarification on translocation requirement 
for inclusion of SS participants (Cohort 2): 
Methods, such as, but not limited to, 
Fluorescence in situ hybridization (FISH) 
assay or Next Generation Sequencing 
(NGS) are commonly used to detect 
translocations. 
Facilitate inclusion of SS participants 
on the basis of confirmed histology 
only. 
6.1 Former Inclusion #3 
moved to Inclusion #10 
And Former Inclusion #4 
moved to Inclusion #11   
And 
6.1 Former Inclusion #14 
(now Inclusion #23) 
Participants must have measurable disease 
by RECIST v1.1 (Inclusion #10) and 
evidence of radiographic or clinical disease 
progression only prior to leukapheresis 
(Inclusion #11).  
Participants must have documented 
radiographic evidence of disease 
progression from prior line of therapy prior 
to lymphodepletion (Inclusion #23). 
Clarification on disease requirements 
to allow for participants who have not 
progressed to undergo Target 
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Brief Rationale 
6.1 Former Inclusion #8 
(deleted)  
And 
6.1 Former Inclusion #15 
(now Inclusion #12) 
Cohort 2 advanced (metastatic or 
unresectable) SS participants must have 
completed at least one standard of care 
treatment including anthracycline 
containing regimen OR is intolerant to the 
therapy.  Participants who are not 
candidates to receive doxorubicin should 
have received ifosfamide unless also 
intolerant to or ineligible to receive 
ifosfamide.  Participants who received 
neoadjuvant/adjuvant anthracycline or 
ifosfamide based therapy and progressed 
within 6 months with metastatic disease will 
be eligible. 
Clarification on disease 
characteristics for inclusion of  
SS participants.  
6.1 Former Inclusion #18 
(now Inclusion #15)  
Participants must have a predicted life 
expectancy that is ≥6 months (Inclusion 
#15) 
Extension of projected life 
expectancy requirement because 
leukapheresis can now be performed 
earlier in treatment plan. 
6.1 Former Inclusion #19 
(now Inclusion #16)  
Participants must have a Left ventricular 
ejection fraction ≥45% with no evidence of 
clinically significant pericardial effusion or 
as per institution’s guidelines (Inclusion 
#16) 
Clarification. 

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Brief Rationale 
6.1 Former Inclusion #20 
(now Inclusion #18)  
Table 9. 
Participant must have adequate organ 
function and blood cell counts within 7 days 
prior to the day of leukapheresis, (or first 
day of lymphodepletion during Treatment 
fitness assessment), as indicated by the 
laboratory values in Table 9 (Inclusion #18 
Clarification of Definitions of Adequate 
Organ Function: 
- 
ANC (must be obtained without G-CSF 
support) 
- 
CD3 count is no more an eligibility 
criterion 
- 
Platelets must be ≥100 x109/L 
- 
Renal function has been clarified 
based on participant age, and method 
- 
Albumin must be ≥3.5 g/dL 
- 
Footnote a) prohibits platelet 
transfusions accepted within 14 days 
from testing 
- 
Footnote b) prohibits red blood cell 
transfusions to meet minimum 
hematologic values for eligibility 
- 
Footnote c) clarifies reassessment 
conditions prior to lymphodepletion 
- 
Footnote d) references guideline on 
anticoagulant medication prior to 
lymphodepletion 
Clarification. 
6.1 Former Inclusion 
Criterion #21 (now Inclusion 
#19) 
Clarify that contraception for male and 
female participants must be followed during 
the intervention period starting at the first 
dose of chemotherapy for at least 
12 months after receiving the T-cell 
infusion, or until persistence of gene 
modified cells in the participant’s blood is 
below the level of detection for 2 
consecutive assessments, whichever is 
longer.   
Clarification. 
6.2 Exclusion Criteria 
6.2.2 Leukapheresis 
Eligibility Screening 
And 
6.2.3 Treatment 
And 
Table 10 – Washout 
periods 
Clarification of washout periods 
requirements prior to leukapheresis and 
prior to lymphodepletion. 
Alignment with cell gene therapy 
program.  

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Brief Rationale 
6.2 Exclusion Criteria 
Former Exclusion Criterion 
#2 (now Exclusion criterion 
#6) 
And 
Exclusion criterion #5 
(deleted) 
 
 
Clarification of CNS metastases exceptions 
for NSCLC participants. 
 
 
Removed restriction on maximum lines of 
therapy for NSCLC participants (former 
Exclusion criterion #5).  
Broaden NSCLC patient eligibility 
6.2 Former Exclusion 
Criteria #6 and 7 (now 
Exclusion criteria #3 and 4) 
 
Per Section 6.3.5: 
- 
Added exception to exclusion of 
participants who have received prior 
genetically engineered NY-ESO-1 
specific T cells, NY-ESO-1 vaccine or 
targeting antibody.  
- 
Added exception to participants who 
have received prior gene therapy using 
an integration vector.   
Allow participants who have benefited 
from GSK3377794 (lete-cel) to be 
considered for treatment with 
GSK3901961 under conditions 
defined in Section 6.3.5. 
6.3.4. Rescreening/Transfer 
(new section added)  
Participants who were 
screenfailure/withdrawn prior to T-cell 
administration may be rescreened in the 
same study/substudy or transferred to any 
applicable GSK-sponsored study or 
substudy of this protocol. 
Rescreening, leukapheresis procedure or 
manufacture process may be waived after 
consultation with Sponsor. 
To allow for re-allocation of 
participants onto other suited 
protocols/substudies when available, 
and for the possibility of skipping 
steps that have already been 
completed under the original 
comparable protocol, after 
consultation with Sponsor. 
6.3.5. Potential eligibility of 
participants who have 
previously received 
letetresgene autoleucel 
Participants who achieved a confirmed 
response of CR or PR or SD ≥3 months 
following first infusion of GSK3377794 
(lete-cel) could possibly benefit post 
progression from receiving a second course 
of treatment with next generation 
NY-ESO-1 specific T cells (such as 
GSK3901961). 
Considerations will be made on a case by 
case basis. Rationale and minimal 
requirements are laid out in this section 
To allow for possible future inclusion 
of prior lete-cel treated participants.  
7.1.2 Bridging Therapy 
and/or Intermediate 
Standard of Care Anti-
Cancer of Therapy before 
Lymphodepletion 
Clarified that bridging or standard of care 
systemic chemotherapy, experimental 
therapy and/or local therapy may be 
administered between Target Expression 
Screening and Leukapheresis; and 
systemic chemotherapy may be 
administered, between Leukapheresis and 
the start of Lymphodepletion, if a participant 
has progressive disease and cannot be 
treatment-free.   
Added clarification. 

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Brief Rationale 
7.1.3 Lymphodepleting 
Chemotherapy 
Clarified situations where Medical Monitor 
must be consulted to discuss 
Lymphodepleting regimen dose 
adjustments. 
Clarified that if creatine clearance is 
estimated that the same method as for 
adequate organ function should be used to 
consider fludarabine dose adjustments 
Clarified requirement for timing of G-CSF 
start post last chemotherapy dose. 
Added safety oversight and 
precautions. 
 
Added clarification. 
7.5.1 Prohibited 
Concomitant Medication 
and Treatment 
Removal of redundant sentence prohibiting 
use of any non-protocol antineoplastic 
therapy.  
Added clarifications. 
7.5.2 Permitted 
Concomitant Medication 
and Treatment 
Added recommendations for participants on 
therapeutic anticoagulants 
Added clarification. 
7.5.3 Rescue Medications 
and Supportive Care 
Minor optimization of language  
Added clarifications. 
7.6 Dose Modification 
Addition of standard language on provision 
for additional manufacturing from excess 
banked leukapheresis product or for a 
second leukapheresis if the transduced cell 
dose does not meet the minimum dose 
required.  
Added clarifications. 
9.1 Dose Selection 
Committee 
Addition of language to cover situation 
where DLTs are observed  
Added clarifications. 
10.1.1 Modified Toxicity 
Probability Interval 2 (mTPI-
2) Based Dose 
Confirmation Design 
Minor clarification to the RP2D suggested 
dose which will have ≥6 participants treated 
at this dose and an observed toxicity rate 
≤1/3. 
Added clarifications. 

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
Pr ot o c ol A m d 0 4  
 
1 4 9  
C or e  
 
S e cti o n # a n d N a me  
D e s cri pti o n of C h a n g e  
Bri ef R ati o n al e  
S u b st u d y 2  
2.   Sc h e d ul e of activiti es  
T a bl e 1.  S u bst u dy 2 
Sc h e d ul e of Activiti es –  
Scr e e ni n g a n d 
L e uk a p h er esis  
F o ot n ot e #1 ( T a bl e 1) h as b e e n a m e n d e d 
t o st at e t h at c o ns e nt f or L e uk a p h er esis a n d 
Tr e at m e nt m ust b e r e p e at e d if giv e n m or e 
t h a n 9 0 d ays pri or t o l e uk a p h er esis 
pr oc e d ur e.  
Mi n or w or di n g cl arific ati o ns f or f o ot n ot es 
#3, 5 a n d 7.  
F o ot n ot e #4 cl arifi es t h at o pti o n al G e n etics 
s a m pl e “ m ay b e c oll ect e d any ti m e fr o m 
si g n at ur e of o pti o n al c o ns e nt u ntil 
l e uk a p h er esis”. 
F o ot n ot e #8 cl arifi es t h at “ C D 3 c o u nt pri or 
t o l e uk a p h er esis s h o ul d pr ef er a bly b e 
p erf or m e d wit hi n 2 4 h o urs pri or t o 
l e uk a p h er esis pr oc e d ur e”. 
F o ot n ot e #9 ali g ns wit h C or e Pr ot oc ol 
S ecti o n 9. 1. 5 o n Vit al Si g ns c oll ecti o n, 
all o wi n g i nstit uti o n al st a n d ar d m et h o ds f or 
c oll ecti o n. 
F o ot n ot e #1 6 a d d e d t o r ef er e nc e d et ails of 
r e n al ass ess m e nt i n Su bst u dy 2 Secti o n 
6. 1 T a bl e 1 0 . 
Cl arific ati o n a n d ali g n m e nt of S O A 
wit h ot h er s ecti o n c h a n g es  
2.   Sc h e d ul e of activiti es  
T a bl e 2.  S u bst u dy 2 
Sc h e d ul e of Activiti es –  
I nt erv e nti o n al P h as e 
( Ly m p h o d e pl eti o n, 
Tr e at m e nt a n d F oll o w -u p) 
A n d  
T a bl e 4.  S u bst u dy 2 
Sc h e d ul e of Activiti es –  
I nt erv e nti o n al P h as e 
( Ly m p h o d e pl eti o n, 
Tr e at m e nt a n d F oll o w -u p) 
f or S plit D osi n g  
A d d e d st a n d ar d m et h o d of c o nv ersi o n f or 
c al e n d ar visit sc h e d uli n g b et w e e n m o nt h t o 
w e ek, a n d w e ek t o d ay.  
C o m bi n e d Tr a ns g e n e C o pi es ( Persist e nc e 
f or S af ety) a n d 
 r o ws 
i nt o o n e as o nly o n e s a m pl e will b e 
c oll ect e d t o p erf or m b ot h t ests. 
F o ot n ot e #1 5 cl arifi e d t o i nstr uct t h at 
“ C T/ M RI ass ess m e nts o nly n e e d t o 
c o nti n u e u ntil c o nfir m e d P D”.  
A d d e d r e q uir e m e nt f or f erriti n, tr o p o ni n a n d 
N T -pr o B N P / B N P t est pri or t o 
Ly m p h o d e pl eti o n ( T a bl e 2)  
A d d e d C o a g ul ati o n ass ess m e nts f or 
b as eli n e, D ay 1  t hr u 4, D ay 6, D ay 8, a n d 
D ay 1 5 ( T a bl e 2)  
I ncl u d e d r e q uir e m e nt f or s us p ect e d C R S or 
I C A N S t o m o nit or c h e mistry, h e m at ol o gy, 
f erriti n, c o a g ul ati o n a n d C r e activ e pr ot ei n 
l a bs, d aily f or a w e ek t h e n ev ery ot h er d ay 
u ntil sy m pt o ms ar e i m pr ovi n g or a n 
alt er n ativ e di a g n osis is c o nfir m e d. I ncl u d e d 
m o nit ori n g of tr o p o ni n a n d N T -pr o B N P / 
B N P l a bs f or C R S gr a d e ≥2 as cli nic ally 
i n dic at e d.  
Cl arific ati o n a n d ali g n m e nt of S O A 
wit h ot h er s ecti o n c h a n g es  
 
 
 
 
 
 
 
 
Ad diti o n of c ar di ac  
a n d 
c o a g ul ati o n t ests. 
 
 
 
 
Cl arific ati o n of sc h e d ul e of 
ass ess m e nt f or s us p ect e d C R S or 
I C A N S. 
 
 
 
 
 
. 
C CI
C CI

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
Pr ot o c ol A m d 0 4  
 
1 5 0  
C or e  
 
S e cti o n # a n d N a me  
D e s cri pti o n of C h a n g e  
Bri ef R ati o n al e  
2.   Sc h e d ul e of activiti es  
T a bl e 3.  S u bst u dy 2 
Sc h e d ul e of Activiti es –  P K, 
I m m u n o g e nicity, a n d 
 - I nt erv e nti o n al 
P h as e ( Tr e at m e nt a n d 
F oll o w -u p)  
A n d  
T a bl e 5.  S u bst u dy 2 
Sc h e d ul e of Activiti es –  P K, 
I m m u n o g e nicity, a n d 
 - I nt erv e nti o n al 
P h as e ( Tr e at m e nt a n d 
F oll o w -u p) f or S plit D osi n g  
Cl arifi e d t h at S a m pl e Ty p e f or d n T G F -RII 
s h o ul d b e “ w h ol e bl o o d” i nst e a d of P B M C.  
R e m ov al of D ay 6 4 si nc e W e ek 1 0 visit is 
n ot s h o wi n g o n t h e t a bl e ( p er f o ot n ot e #1).  
U p d at e d R e q uir e m e nt f or o n -st u dy bi o psy 
at W e ek 4 i nst e a d of W e ek 6 ( F o ot n ot e #8 
s p ecifi es t h at t h e wi n d o w of c oll ecti o n f or 
t h e W e ek 4 bi o psy is ext e n d e d fr o m D ay 2 1 
t o D ay 3 9). 
C orr ect e d sc h e d ul e of c oll ecti o n f or 
Cyt oki n e A n alys es (r e m ov al of W e ek 5, 7 
a n d 9 c oll ecti o ns)  
U p d at e d f o ot n ot e r el at e d t o c oll ecti o n of 
cyt oki n es w h e n C R S is s us p ect e d t o 
r ef er e nc e l oc al l a bor at ory  m o nit ori n g  
Cl arific ati o n a n d ali g n m e nt of S O A 
wit h ot h er s ecti o n c h a n g es  
2.   Sc h e d ul e of activiti es  
T a bl e 6.  S u bst u dy 2 
Sc h e d ul e of Activiti es –  
F oll o w -u p aft er Dis e as e 
Pr o gr essi o n or aft er 
C o m pl eti o n of I nt erv e nti o n al 
P h as e F oll o w -u p  
C o m bi n e d Tr a ns g e n e C o pi es ( Persist e nc e 
f or S af ety) a n d
 r o ws 
i nt o o n e as o nly o n e s a m pl e will be 
c oll ect e d t o p erf or m b ot h t ests. 
Cl arifi e d l a n g u a g e t o ali g n wit h L o n g -t er m 
F oll o w -u p St u dy 2 0 8 7 5 0, i ncl u di n g:   
- 
D isc o nti n u ati o n of p ersist e nc e 
 
m o nit ori n g at  ≥2 y e ar p ost T -c ell 
i nf usi o n  f or p artici p a nts w h os e 
tr a ns d uc e d T c ells ar e u n d et ect e d f or 2 
c o ns ec utiv e visit ass ess m e nts  
- 
A ll o w m e dic al ev al u ati o ns t o t ak e pl ac e 
vi a t el e m e dici n e ( e. g. p h o n e c all or 
vi d e o c o nf er e nc es) a n d/ or h o m e 
h e alt hc ar e w h er e c o u ntry a n d/ or l oc al 
r e g ul ati o ns all o w 
- 
A d d e d o pti o n of r e m ot e visits f or 
y e ars 6 -1 5  
Cl arific ati o n a n d ali g n m e nt of S O A 
wit h ot h er s ecti o n c h a n g es  
3. 2. 1 Risk Ass ess m e nt  
T a bl e 7. Risk Miti g ati o n 
Str at e gy  
C orr ect e d r ef er e nc e t o I P as G S K 3 8 4 5 0 9 7 
f or S u bst u dy 2.  
U p d at e d risk ass ess m e nt t a bl e:  
- 
T o i ncl u d e risks of d ecr e as e d visi o n 
a n d p eri p h er al n e ur o p at hy f or 
ly m p h o d e pl eti n g c h e m ot h er a py 
(fl u d ar a bi n e/cycl o p h os p h a mi d e);  
- 
T o i ncl u d e/ a m e n d risks of 
h a e m at o p oi etic cyt o p e ni as, 
hy p ers e nsitivity, r e activ ati o n of 
pr evi o us vir al i nf ecti o ns aft er pr ol o n g e d 
l e uk o p e ni a, n e utr o p e ni a (i ncl u di n g f at al 
n e utr o p e ni a) d ecr e as e d visi o n, t o 
T C R -T i nf usi o n.  
U p d at e t o risk miti g ati o n.  
C CI
C CI
C CI
C CI

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
Pr ot o c ol A m d 0 4  
 
1 5 1  
C or e  
 
S e cti o n # a n d N a me  
D e s cri pti o n of C h a n g e  
Bri ef R ati o n al e  
4. O bj ectiv es a n d E n d p oi nts  
 
R ef or m att e d S ec o n d ary O bj ectiv es a n d 
E n d p oi nts i nt o “ Sec o n d ary –  Effic acy” a n d 
“ S ec o n d ary –  Ph ar m ac oki n etics”.  
C o m bi n e d Fr e q u e ncy a n d s ev erity of 
A dv ers e Ev e nts ( A Es), S eri o us A Es ( S A Es) 
a n d A Es of Sp eci al I nt er est ( A E SIs) as o n e 
si n gl e e n d p oi nt. 
O pti miz e d d escri pti o n of Sec o n d ary –  
P h ar m ac oki n etics o bj ectiv es a n d 
e n d p oi nts . 
U p d at e d list of a b br evi ati o ns.  
T o cl arify s u bc at e g ori es of s ec o n d ary 
o bj ectiv es.  
 
St a n d ar diz ati o n of r e p orti n g.  
 
 
 
Cl arific ati o n of Ph ar m ac oki n etics 
pl a n.  
 
Fi n aliz ati o n of t a bl e.  
5. 1. 1. 1 D et er mi ni n g t h e 
R 2 P D  
 
Mi n or cl arific ati o n t o t h e R P2 D s u g g est e d 
d os e w hic h will h av e ≥6  p artici p a nts tr e at e d 
at t his d os e a n d a n o bs erv e d t oxicity r at e 
≤1/ 3.  
Cl arific ati o n of t hr es h ol d f or 
s u g g est e d R P2 D d os e. 
5. 1. 3 P artici p a nt J o ur n ey  
 
O pti miz ati o n of w or di n g t o Partici p a nt 
j o ur n ey d escri pti o n t o ali g n wit h e q uiv al e nt 
C or e Pr ot oc ol S ecti o n 5. 2.  
Ali g n m e nt of w or di n g wit h e q uiv al e nt 
C or e pr ot oc ol s ecti o n  
5. 1. 4 T u m or Bi o psi es ( n e w 
s ecti o n a d d e d) A n d  
6. 1 F or m er I ncl usi o n 
Crit eri o n #5 ( n o w I ncl usi o n 
Crit eri o n #4)  
6. 1. F or m er I nc l usi o n 
crit eri o n # 2 1 ( n o w i ncl usi o n 
Crit eri o n #2 4)  
A d d e d r e q uir e m e nts f or o n -st u dy t u m or 
bi o psi es  
 
A r e pr es e nt ativ e t u m or tiss u e s p eci m e n 
[ arc hiv e d or fr es h bi o psy] wit h ass oci at e d 
p at h ol o gy r e p ort s h o ul d b e av ail a bl e t o 
p erf or m N Y E S O 1 a nti g e n ex pr essi o n 
a n alysis u nl ess a n a p pr o pri at e r ec e nt 
N Y -E S O -1 ex pr essi o n r es ult is alr e a dy 
av ail a bl e.  
Cl arific ati o n of r e q uir e m e nts f or b as eli n e 
bi o psy.  
Cl arific ati o n.  
5. 3 E n d of S u bst u dy 
d efi niti o n  
Cl arific ati o n of e n d of I nt erv e nti o n al P h as e 
a n d e n d of s u bst u dy f or  i n divi d u al 
p artici p a nts as w ell as f or t h e e ntir e 
s u bst u dy/c o h ort  
Cl arific ati o n of p ati e nt dis p ositi o n  
5. 1  Ov er all D esi g n  
6. 1 I ncl usi o n Crit eri a  
6. 2 Excl usi o n Crit eri a  
O pti miz ati o n of Tr e at m e nt Fit n ess a n d 
Eli gi bility crit eri a pri or t o Ly m p h o d e pl eti o n  
R e m ov e d r e q uir e m e nt f or r e p etiti o n 
of all ass ess m e nts f or eli gi bility 
crit eri a t h at w er e alr e a dy m et pri or t o 
l e uk a p h er esis. R e pl ac e d by a 
Tr e at m e nt Fit n ess ass ess m e nt of t h e 
s af ety crit eri a i n c o ns ult ati o n wit h 
M e dic al M o nit or.  
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Section # and Name 
Description of Change 
Brief Rationale 
6.1 Former Inclusion #3 
moved to Inclusion #9   
And 
Former Inclusion #4 moved 
to Inclusion #10   
And 
6.1 Former Inclusion #12 
(now Inclusion #19) 
Participants must have measurable disease 
by RECIST v1.1 (Inclusion #9) and 
evidence of radiographic or clinical disease 
progression only prior to leukapheresis 
(Inclusion #10).  
Participants must have documented 
radiographic evidence of disease 
progression from prior line of therapy prior 
to lymphodepletion (Inclusion #19). 
Clarification on disease requirements 
to allow for participants who have not 
progressed to undergo Target 
Expression Screening.. 
6.1 Former Inclusion #6 
moved to Inclusion #4   
Clarification on translocation requirement 
for inclusion of SS participants: Methods, 
such as, but not limited to, Fluorescence in 
situ hybridization (FISH) assay or Next 
Generation Sequencing (NGS) are 
commonly used to detect translocations. 
Facilitate inclusion of SS participants 
on the basis of confirmed histology 
only. 
6.1 Former Inclusion #8 
(deleted)  
And 
6.1 Former Inclusion #13 
(now Inclusion #11) 
Advanced (metastatic or unresectable) SS 
participants must have completed at least 
one standard of care treatment including 
anthracycline containing regimen OR is 
intolerant to the therapy.  Participants who 
are not candidates to receive doxorubicin 
should have received ifosfamide unless 
also intolerant to or ineligible to receive 
ifosfamide.  Participants who received 
neoadjuvant/adjuvant anthracycline or 
ifosfamide based therapy and progressed 
within 6 months with metastatic disease will 
be eligible. 
Clarification on disease 
characteristics for inclusion of  
Cohort 2 SS participants. 
6.1 Former Inclusion #15 
(now Inclusion #13)  
Participants must have a predicted life 
expectancy that is ≥6 months (Inclusion 
#13). 
Extension of projected life 
expectancy requirement because 
leukapheresis can now be performed 
earlier in treatment plan. 
6.1 Former Inclusion #16 
(now Inclusion #14)  
Participants must have a Left ventricular 
ejection fraction ≥45% with no evidence of 
clinically significant pericardial effusion or 
as per institution’s guidelines (Inclusion 
#14). 
Clarification. 

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Section # and Name 
Description of Change 
Brief Rationale 
6.1 Former Inclusion #18 
(now Inclusion #16)  
Table 10. 
Participant must have adequate organ 
function and blood cell counts within 7 days 
prior to the day of leukapheresis, (or first 
day of lymphodepletion during Treatment 
fitness assessment), as indicated by the 
laboratory values in Table 10 (Inclusion #16 
Clarification of Definitions of Adequate 
Organ Function: 
- 
ANC (must be obtained without G-CSF 
support) 
- 
CD3 count is no more an eligibility 
criterion 
- 
Platelets must be ≥100 x109/L 
- 
Renal function has been clarified 
based on participant age, and method 
- 
Albumin must be ≥3.5 g/dL 
- 
Footnote a) prohibits platelet 
transfusions accepted within 14 days 
from testing 
- 
Footnote b) prohibits red blood cell 
transfusions to meet minimum 
hematologic values for eligibility 
- 
Footnote c) clarifies reassessment 
conditions prior to lymphodepletion 
- 
Footnote d) references guideline on 
anticoagulant medication prior to 
lymphodepletion 
Clarification. 
6.1 Former Inclusion 
Criterion #19 (now Inclusion 
#17) 
Clarify that contraception for male and 
female participants must be followed during 
the intervention period starting at the first 
dose of chemotherapy for at least 12 
months after receiving the T-cell infusion, or 
until persistence of gene modified cells in 
the participant’s blood is below the level of 
detection for 2 consecutive assessments, 
whichever is longer.   
Clarification. 
6.2 Exclusion Criteria 
6.2.2 Leukapheresis 
Eligibility Screening 
And 
6.2.3 Treatment 
And 
Table 11 – Washout 
periods 
Clarification of washout periods 
requirements prior to leukapheresis and 
prior to lymphodepletion. 
Alignment with cell gene therapy 
program.  

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Section # and Name 
Description of Change 
Brief Rationale 
6.2 Exclusion Criteria 
Former Exclusion Criterion 
#1 (now Exclusion criterion 
#6) 
Move CNS metastases requirement to prior 
Leukapheresis  
Optimization of screening for 
eligibility 
6.2 Exclusion Criteria #3 
and 4 
Per Section 6.3.5: 
- 
Added exception to exclusion of 
participants who have received prior 
genetically engineered NY-ESO-1 
specific T cells, NY-ESO-1 vaccine or 
targeting antibody.  
- 
Added exception to participants who 
have received prior gene therapy using 
an integration vector.   
Allow participants who have benefited 
from GSK3377794 (lete-cel) to be 
considered for treatment with 
GSK3901961 under conditions 
defined in Section 6.3.5. 
6.3.4. Rescreening/Transfer 
(new section added)  
Participants who were 
screenfailure/withdrawn prior to T-cell 
administration may be rescreened in the 
same study/substudy or transferred to any 
applicable GSK-sponsored study or 
substudy of this protocol. 
Rescreening, leukapheresis procedure or 
manufacture process may be waived after 
consultation with Sponsor. 
To allow for re-allocation of 
participants onto other suited 
protocols/substudies when available, 
and for the possibility of skipping 
steps that have already been 
completed under the original 
comparable protocol, after 
consultation with Sponsor. 
6.3.5. Potential eligibility of 
participants who have 
previously received 
letetresgene autoleucel 
Participants who achieved a confirmed 
response of CR or PR or SD ≥3 months 
following first infusion of GSK3377794 
(lete-cel) could possibly benefit post 
progression from receiving a second course 
of treatment with next generation 
NY-ESO-1 specific T cells (such as 
GSK38445097). 
Considerations will be made on a case by 
case basis. Rationale and minimal 
requirements are laid out in this section 
To allow for possible future inclusion 
of prior lete-cel treated participants.  
7.1.2 Bridging Therapy 
and/or Intermediate 
Standard of Care Anti-
Cancer of Therapy before 
Lymphodepletion 
Clarified that bridging or standard of care 
systemic chemotherapy, experimental 
therapy and/or local therapy may be 
administered between Target Expression 
Screening and Leukapheresis; and 
systemic chemotherapy may be 
administered, between Leukapheresis and 
the start of Lymphodepletion, if a participant 
has progressive disease and cannot be 
treatment-free.   
Added clarification. 

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Section # and Name 
Description of Change 
Brief Rationale 
7.1.3 Lymphodepleting 
Chemotherapy 
Clarified situations where Medical Monitor 
must be consulted to discuss 
Lymphodepleting regimen dose 
adjustments. 
Clarified that if creatine clearance is 
estimated that the same method as for 
adequate organ function should be used to 
consider fludarabine dose adjustments 
Clarified requirement for timing of G-CSF 
start post last chemotherapy dose. 
Added safety oversight and 
precautions. 
 
Added clarification. 
7.5.1 Prohibited 
Concomitant Medication 
and Treatment 
Removal of redundant sentence prohibiting 
use of any non-protocol antineoplastic 
therapy.  
Added clarifications. 
7.5.2 Permitted 
Concomitant Medication 
and Treatment 
Added recommendations for participants on 
therapeutic anticoagulants 
Added clarification. 
7.5.3 Rescue Medications 
and Supportive Care 
Minor optimization of language  
Added clarifications. 
7.6 Dose Modification 
Addition of standard language on provision 
for additional manufacturing from excess 
banked leukapheresis product or for a 
second leukapheresis if the transduced cell 
dose does not meet the minimum dose 
required.  
Added clarifications. 
9.1 Dose Selection 
Committee 
Addition of language to cover situation 
where DLTs are observed  
Added clarifications. 
10.1.1 Modified Toxicity 
Probability Interval 2 (mTPI-
2) Based Dose 
Confirmation Design 
Minor clarification to the RP2D suggested 
dose which will have ≥6 participants treated 
at this dose and an observed toxicity rate 
≤1/3. 
Added clarifications. 
Throughout document 
Minor edits and typo corrections done 
Editorial changes 
 
 

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13.2. 
Amendment 2 (04 November 2021) 
Overall Rationale for Amendment 2: 
1. Implementation of additional safety monitoring measures in accordance with a 
recent Dear Investigator Letter and safety events. 
2. For participants treated as of protocol amendment 2, the cyclophosphamide dose 
in the lymphodepleting chemotherapy was reduced on Day -7 thru Day -4 to 
further optimize and reduce potential for acute and prolonged cytopenias while 
also minimizing impact on efficacy. 
3. For NSCLC participants in Substudy 1 Cohort 2 treated as of Protocol 
Amendment 2, the lymphodepleting chemotherapy schedule was changed from 
Day -8 through Day -5 to Day -7 through Day -4 to align with the schedule for the 
sarcoma participant cohort. 
4. Inclusion of myxoid/round cell liposarcoma (MRCLS) as a second translation-
related sarcoma indication.   
Section # and Name 
Description of Change 
Brief Rationale 
Core protocol 
1 Synopsis – Rationale 
Updated IB cutoff date and number of 
patients treated with lete-cel 
Added most recent IB data 
1 Synopsis - Overall design 
Description of substudies moved to Section 
12.12, Reference to Section 12.12 for 
further details regarding additional 
substudies.  
In anticipation of additional 
substudies, enables administrative 
changes to document.  
Synopsis Screening and 
Section 5.2 Screening 
Addition of LAGE-1a as potential antigen 
assay 
Inclusion of LAGE-1a as potential 
screen for antigen testing to expand 
potential participant eligibility 
3 Introduction 
Reference to Secction 12.12 for details 
regarding substudies 
In anticipation of additional 
substudies, enables administrative 
changes to document. 
3.2.2 GSK3377794 
(letetresgene autoleucel, 
lete-cel) (lete-cel) 
Updated lete-cel IB details 
Added most recent IB data 
3.2.2 GSK3377794 
(letetresgene autoleucel, 
lete-cel) (lete-cel) 
Updated LTFU study 208750 details  
Study 208570 is not product specific 
3.2.3  Next Generation 
Engineering 
Reference to Section 12.12 for details 
regarding substudies 
In anticipation of additional 
substudies, enables administrative 
changes to document. 
1 Synopsis  Next 
Generation Engineering 
Added MRCLS to figure for Substudy 1 and 
Substudy 2 
Inclusion ofMRCLS in both 
substudies 
5.1 Overall design 
Updated study schema 
Inclusion of MRCLS in both 
substudies 

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
Pr ot o c ol A m d 0 4  
 
1 5 7  
C or e  
 
S e cti o n # a n d N a me  
D e s cri pti o n of C h a n g e  
Bri ef R ati o n al e  
5. 1 Ov er all d esi g n  
R ef er e nc e t o S ecti o n 1 2. 1 2 f or d et ails 
r e g ar di n g s u bst u di es 
I n a ntici p ati o n of a d diti o n al 
s u bst u di es, e n a bl es a d mi nistr ativ e 
c h a n g es t o d oc u m e nt. 
5. 2 P artici p a nt J o ur n ey  
I ncl u d e d r ef er e nc e t o s u bst u di es f or H L A 
t esti n g s u bst u dy s p ecific d et ails 
H L A t esti n g is s u bst u dy s p ecific –  
d et ails ar e n ot pr ovi d e d i n C or e b ut i n 
i n divi d u al s u bst u dy s ecti o ns. 
5. 2 P artici p a nt J o ur n ey P art 
1 Scr e e ni n g  
I ncl u d e d t hir d o pti o n of t ar g et ex pr essi o n 
scr e e ni n g 
Ad d e d o pti o n of pr oc e e di n g wit h 
t u m or s a m pl e c oll ecti o n b as e d o n a 
p ositiv e l oc al H L A r es ult..  
5. 3  N u m b er of P artici p a nts  
R ef er e nc e t o S ecti o n 1 2. 1 2 f or d et ails 
r e g ar di n g s u bst u di es 
I n a ntici p ati o n of a d diti o n al 
s u bst u di es, e n a bl es a d mi nistr ativ e 
c h a n g es t o d oc u m e nt. 
6 . 2 Scr e e ni n g U n d er Ot h er 
G S K St u di es  
U p d at e d t o i n dic at e acc e pt a bility of L A G E -
1 a p ositiv e p artici p a nts  
I n or d er t o acc o m m o d at e p artici p a nts 
fr o m ot h er st u di es w h os e t u m or w as 
p ositiv e f or L A G E -1 a a n d t o f acilit at e 
st u dy-t o-st u dy tr a nsf er of t h es e 
p artici p a nts  
6. Pr ot oc ol p o p ul ati o n  
A d d e d s e nt e nc e t o r ef er t o s u bst u di es f or 
pr ot oc ol p o p ul ati o n d et ails r el ev a nt t o e ac h 
s u bst u dy.  
Tr a nsiti o n t o m o d ul ar f or m at.  
8. 1. 2 S plit D os e 
A d mi nistr ati o n  
U p d at e d l a n g u a g e t o r ef er t o s u bst u di es f or 
s plit d osi n g  
Tr a nsiti o n t o m o d ul ar f or m at  
8. 2 D os e Li miti n g T oxicity  
U p d at e d ti mi n g f or D L T wi n d o w f or p oi nt 7 
t o h ar m o niz e 
Ty p o c orr ecti o n  
8. 2 D os e Li miti n g T oxicity  
I ncl u d e d r ef er e nc e t o s u bst u di es f or a ny 
s u bst u dy s p ecific D L Ts 
I n t h e ev e nt D L Ts s p ecific t o a 
s u bst u dy aris e, t h es e will b e a d d e d t o 
t h e s u bst u dy vi a a m e n d m e nt  
8. 5 St u dy St o p pi n g a n d 
P a usi n g R ul es  
A d d e d r ef er e nc e t o s u bst u dy f or a ny 
s p ecific s af ety ass ess m e nts 
I n t h e ev e nt s u bst u dy s p ecific s af ety 
ass ess m e nts aris e, t h es e will b e 
a d d e d t o t h e s u bst u d y vi a 
a m e n d m e nt  
9. 1. 6 C ar di ac ass ess m e nts  
A d d e d t ext t o d efi n e s p ecific c ar di ov asc ul ar 
risk f act ors a n d st e ps n ec ess ary t o 
ev al u at e a n d m o nit or p artici p a nt  
I m pl e m e nt ati o n of a d diti o n al s af ety 
m o nit ori n g m e as ur es i n acc or d a nc e 
wit h a r ec e nt D e ar I nv esti g at or L ett er 
( 2 1 Oct 2 0 2 1) a n d s af ety ev e nts.. 
9. 1. 7 P ul m o n ary 
Ass ess m e nts  
A d d e d n e w s ecti o n o n p artici p a nt 
p ul m o n ary f u ncti o n ass ess m e nt pri or t o 
ly m p h o d e pl eti o n 
I m pl e m e nt ati o n of a d diti o n al s af ety 
m o nit ori n g m e as ur es i n acc or d a nc e 
wit h a r ec e nt D e ar I nv esti g at or L ett er 
( 2 1 Oct 2 0 2 1) a n d s af ety ev e nts.   
9. 1. 8 M o nit ori n g f or 
I m m u n e Eff ect or C ell-
Ass oci at e d N e ur ot oxicity 
Sy n dr o m e  
A d d e d r ef er e nc e t o s u bst u dy f or a ny 
s p ecific ass ess m e nts 
Ad d e d l a n g u a g e i n t h e ev e nt t h er e 
ar e a d diti o n al ass ess m e nts s p ecific 
t o a s u bst u dy.  
9. 1. 9 M o nit ori n g f or 
D e my eli n ati n g N e ur o p at hy 
a n d ot h er N e ur ol o gic al 
Ev e nts  
A d d e d r ef er e nc e t o s u bst u dy f or a ny 
s p ecific ass ess m e nts 
Ad d e d l a n g u a g e i n t h e ev e nt t h er e 
ar e a d diti o n al ass ess m e nts s p ecific 
t o a s u bst u dy.  
C
C
I
C CI

T M F -1 4 6 8 2 5 6 0  
C O N FI D E N TI A L  
 
2 0 9 0 1 2  
 
Pr ot o c ol A m d 0 4  
 
1 5 8  
C or e  
 
S e cti o n # a n d N a me  
D e s cri pti o n of C h a n g e  
Bri ef R ati o n al e  
9. 2. 1 Ti m e P eri o d a n d 
Fr e q u e ncy f or C oll ecti n g A E 
a n d S A E I nf or m ati o n  
U p d at e d ti mi n g f or A E a n d S A E c oll ecti o n  
Cl arifi e d A E a n d S A E r e p orti n g 
g ui d a nc e  
9. 2. 5 Pr e g n a ncy  
M ov e d t a bl e of c o ntr ac e pti o n us e ti mi n gs t o 
S ecti o n  1 2. 4 C o ntr ac e pti o n G ui d a nc e a n d 
C oll ecti o n of Pr e g n a ncy I nf or m ati o n  
Ad d e d t a bl e of c o ntr ac e pti o n us e 
ti mi n gs t o a p p e n dix p ert ai ni n g t o 
c o ntr ac e ptiv e g ui d a nc e r at h er t h a n 
r et ai n i n t h e Pr e g n a ncy s ecti o n  
9. 2. 7  A dv ers e Ev e nts of 
S p eci al I nt er est ( A E SIs)  
A d d e d r ef er e nc e t o s u bst u dy f or a ny 
s p ecific ass ess m e nts 
Ad d e d l a n g u a g e  i n t h e ev e nt t h er e 
ar e a d diti o n al ass ess m e nts s p ecific 
t o a s u bst u dy.  
9. 8 G e n etics  
Cl arifi e d l a n g u a g e a n d cr oss r ef er e nc e d 
S ecti o n 9. 1 0  
Str e a mli n e d l a n g u a g e  
9. 1 0. 1 T u m or Bi o psy  
R e m ov al of ti m e li mit ati o ns a n d r ef er e nc e 
t o s u bst u dy f or arc hiv al tiss u e ti m e 
li mit ati o ns 
F or m att e d s ecti o n by ti m e of bi o psy  
I ncl u d e d r e q uir e m e nts o n s a m pl e s uit a bility  
I n dic ati o ns v ary by s u bst u dy 
Divi d e d t ext i nt o Scr e e ni n g, Bas eli n e 
a n d O n -st u dy s a m pli n g ti m es t o 
e n h a nc e r e a d er u n d erst a n di n g  
A d d e d g ui d a nc e o n ty p e of bi o psy 
t h at is acc e pt a bl e p er pr ot oc ol 
9. 1 0. 2 Li q ui d Bo psi es (fr o m 
circ ul ati n g bl o o d) 
I ncl u d e d a d diti o n al d escri ptiv e t ext 
Ad d e d t ext t o pr ovi d e m or e 
b ack gr o u n d t o r es e arc h p ur p os e of 
li q ui d bi o psi es 
9. 1 0. 4 C ell Ph e n oty p e a n d 
F u n cti o n al Activity  
I ncl u d e d t ext a b o ut a p h er esis pr o d uct 
Ex p a n d e d a p plic a bility of ass ays t o 
b ot h a p h er esis a n d m a n uf act ur e d 
pr o d uct  
9. 1 0. 5 d n T G F b RII R ec e pt or 
Ex pr essi o n A n alys es  
U p d at e d l a n g u a g e t o r ef er t o s u bst u di es f or 
d n T G F b RII R ec e pt or Ex pr essi o n An alys es 
t esti n g r e q uir e m e nts 
d n T G F b RII R ec e pt or Ex pr essi o n 
An alys es ar e n ot t est e d i n all 
s u bst u di es 
9. 1 0. 8 St o ol C oll ecti o n f or 
Micr o bi o m e A n alysis  
D el et e d s ecti o n  
R e m ov e d b ec a us e ass ay n ot b ei n g 
c o n d uct e d u n d er Pr ot oc ol 
A m e n d m e nt 2  
1 1. R ef er e nc es  
U p d a t e d r ef er e nc es s ecti o n 
U p d at e d r ef er e nc es t o b e c or e -
s p ecific 
1 2. 7 A p p e n dix 7: 
S u p p ortiv e C ar e G ui d a nc e  
I ncl u d e d l a n g u a g e t o r ef er t o s u bst u dy f or 
a d diti o n al s u bst u dy s p ecific g ui d a nc e, 
w h e n a p plic a bl e.  
Ad d e d l a n g u a g e i n t h e ev e nt t h er e 
ar e a d diti o n al as s ess m e nts s p ecific 
t o a s u bst u dy. 
1 2. 7. 2 I nf ecti o n  
I ncl u d e d g ui d a nc e f or p artici p a nts wit h 
i n d w elli n g c e ntr al li n es 
Ad d e d g ui d a nc e f or i ncr e as e d 
m o nit ori n g of i n d w elli n g c at h et er li n es 
t o w atc h f or i nf ecti o n 
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Section # and Name 
Description of Change 
Brief Rationale 
12.7.2.6 Other Anti-
Microbial 
Prophylaxis/Treatment 
Included guidance for participants with 
severe or gross hematuria 
Included guidance for participants requiring 
anti-microbial therapy with cardiac toxicity 
risk 
Added guidance to check for BK 
viruria and viremia.  In adiditon, 
added guidance to raise site’s 
awareness of need to carry out 
increased cardiac monitoring in 
participants receiving any anti-
microbial agent with a recognized 
cardiac toxicity risk.  
12.7.3 Hematologic and 
Blood Product Support 
Included language for management of 
thrombocytopenia in in- and out-patient 
setting 
Clarified out-patient support for 
completeness.  
12.7.5 Management of 
Cytokine Release 
Syndrome 
Included language for additional monitoring 
of participants with cardiac risks 
Provided detailed  guidance for 
monitoring of participants with cardiac 
risk factors who also develop CRS in 
an effort to minimize further risks.   
12.11 Appendix 11: 
Abbreviations and 
Trademarks 
Updated abbreviations list 
Removed abbreviations no longer 
applicable 
12.12. Appendix 12: List of 
substudies 
Table of substudies added 
Transition to modular format to 
enable administrative changes and 
provide overview of all substudies 
13. Protocol Amendment 
History 
Amendment 1 rationale and table moved to 
new section (Appendix 13) 
Introduction of additional amendment.  
Throughout document 
Minor edits and type corrections done 
Editorial changes 
Table of contents  
Udpated to refer only to Core  
In an effort to support future 
modularization of the 209012 
protocol, the Table of Contents was 
updated to reflect only the Core 
section of the protocol. 
Section 11 References 
Updated to include only those references 
relevant to the Core section of the protocol. 
In an effort to support future 
modularization of the 209012 
protocol, reference list was updated 
to include only those references 
relevant to the Core section of the 
protocol. 
 
 

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13.3. 
Amendment 3 (20 December 2021) 
Overall Rationale for Amendment 3: 
The three primary reasons for Amendment 3 are as follows: 
• Substantial: Addition of Substudy 3 as “GSK4427296 [NYESO 1(c259) TCR 
engineered T cells using the Epi-R manufacturing process] in previously treated 
(2L+) HLA-A*02+ participants with NYESO 1+ and/or LAGE1a+ advanced SS 
or MRCLS” with a planned sample size of 19 and to be conducted in the United 
States only. 
• Non-substantial: Splitting of master protocol into individual separate documents 
while organization of the sections does not change:  
1) The Core Master protocol captures the common design and supporting 
documentation, including an updated list of substudies and the history of 
amendments, and 2) Each substudy is included as an individual document. 
• Non-substantial:Minor changes to Substudy 1 and 2 to ensure alignment of design 
and procedures across 3 substudies. 
Section # and Name 
Description of Change 
Brief Rationale 
Core  
1 Synopsis - Overall design 
Reference to Section 12.12 for further 
details regarding additional substudies and 
planned overall sample size.  
Inclusion of reference to master 
protocol planned overall sample size.  
9.9 Immunogenicity 
Assessments 
Specific asset references removed. 
Specific reference removed as 
collections and assessments are 
intended to apply to any assets under 
current and future substudies. 
12.2 Appendix 2: Clinical 
Laboratory Tests 
Updated Note under table of Clinical 
Laboratory Tests mention LAGE-1a 
expression.  
Inclusion of LAGE-1a tests results 
when applicable. 
12.12. Appendix 12: List of 
substudies (updated) 
Included Substudy 3 as “GSK4427296 
[NYESO 1(c259) TCR engineered T cells 
using the Epi-R manufacturing process] in 
previously treated (2L+) HLA-A*02+ 
participants with NYESO 1+ and/or 
LAGE1a+ advanced SS or MRCLS” with a 
planned sample size of 19 and to be 
conducted in the United States only. 
Included master protocol overall planned 
sample size of approximately 67. 
Countries where substudy will be active is 
added for all 3 substudies 
Inclusion of new substudy and update 
of overall estimated sample size. 

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Section # and Name 
Description of Change 
Brief Rationale 
12.13. Appendix 13: Master 
Protocol Document History 
(new) 
Table captures the chronology of each 
amendment, lists the documents that have 
been updated (including their document 
reference numbers), and identifies the 
current version for each individual 
document as component of the master 
protocol.  
T Capture of history of protocol and 
document amendments before and 
after splitting of master protocol into 
individual separate documents (one 
for the core and one for each 
substudy).  
Throughout document 
Minor edits and typo corrections done 
Editorial changes 
 
 

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