A Multicentre, Randomised, Double-blind, Placebo-controlled, Phase 3 Study Evaluating the Efficacy and Safety of Two Doses of Anifrolumab in Adult Subjects With Active Systemic Lupus Erythematosus
Phase: PHASE3
Conditions: Active Systemic Lupus Erythematosus
Sponsor: AstraZeneca



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PROTOCOL SYNOPSIS
A Multicentre, Randomised, Double-blind, Placebo-controlled, Phase 3 
Study Evaluating the Efficacy and Safety of Two Doses of Anifrolumab in 
Adult Subjects with Active Systemic Lupus Erythematosus
International Coordinating Investigator
Study site(s) and number of subjects planned
Approximately 450 subjects are planned at approximately 173 sites.
Study period
Phase of development
Estimated date of first subject enrolled
Q2 2015
3
Estimated date of last subject completed
Q2 2018
Study design
This is a Phase 3, multicentre, multinational, randomised, double-blind, placebo-controlled 
study to evaluate the efficacy and safety of an intravenous treatment regimen of anifrolumab 
(150 mg or 300 mg) versus placebo in subjects with moderately to severely active, 
autoantibody-positive systemic lupus erythematosus (SLE) while receiving standard of care 
(SOC) treatment. The study will be performed in adult subjects aged 18 to 70 years of age.
Approximately 450 subjects receiving SOC treatment will be randomised in a 1:2:2 ratio to 
receive a fixed intravenous dose of 150 mg anifrolumab, 300 mg anifrolumab, or placebo 
every 4 weeks (Q4W) for a total of 13 doses (Week 0 to Week 48), with the primary endpoint 
evaluated at the Week 52 visit. Investigational product will be administered as an intravenous 
(IV) infusion via an infusion pump over a minimum of 30 minutes, Q4W. Subjects must be
taking either 1 or any combination of the following: oral corticosteroids (OCS), antimalarial,
and/or immunosuppressants.
Randomisation will be stratified using the following factors: SLE Disease Activity Index 2000 
(SLEDAI-2K) score at screening (<10 points versus ≥10 points); Week 0 (Day 1) OCS dose 

Revised Clinical Study Protocol
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 5
Date 18 May 2016
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(<10 mg/day versus ≥10 mg/day prednisone or equivalent); and results of a type 1 interferon 
(IFN) test (high versus low).
This study includes:

A Screening Period: Up to 30 days

Treatment Period: A 52-week double-blind treatment period with investigational
product administration Q4W from Week 0 to Week 48 for a total of 13 doses

At Week 52, subjects will have 2 options:

If eligible, enrol into the long-term extension (LTE) study
OR

Continue in the current study for another 8 weeks to complete a 12-week safety
follow-up after the last dose of investigational product (last dose of
investigational product will be given in Week 48)
Objectives
Primary Objective:
Outcome Measures:
To evaluate the effect of anifrolumab 300 mg 
compared to placebo on disease activity as 
measured by the difference in the proportion of 
subjects who achieve an SLE Responder Index 
of ≥4 (SRI[4]) at Week 52
Composite endpoint SRI(4), defined by the following 
criteria:
-
Reduction from baseline of ≥4 points in the
SLEDAI-2K and
-
No new organ system affected as defined by 1 or
more British Isles Lupus Assessment Group
(BILAG)-2004 A or 2 or more BILAG-2004 B
items compared to baseline using BILAG-2004
and
-
No worsening from baseline in subjects’ lupus
disease activity defined by an increase
≥0.30 points on a 3-point Physician’s Global
Assessment (PGA) visual analogue scale (VAS)
and
-
No discontinuation of investigational product or
use of restricted medications beyond the
protocol-allowed thresholda before assessment
Key Secondary Objectives:
Outcome Measures:
To evaluate the effect of anifrolumab 300 mg compared to placebo on:
The proportion of subjects with SRI(4) at 
Week 52 in the IFN test-high sub-group
SRI(4) (see outcome measure for primary objective)

Revised Clinical Study Protocol
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 5
Date 18 May 2016
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The proportion of subjects who achieve an 
OCS dose ≤7.5 mg/day at Week 40, which is 
maintained through Week 52 in the sub-group 
of subjects with baseline OCS ≥10 mg/day
Maintained OCS reduction defined by the following 
criteria: 
-
Achieve an OCS dose of ≤7.5 mg/day
prednisone or equivalent by Week 40 and
-
Maintain an OCS dose ≤7.5 mg/day prednisone
or equivalent from Week 40 to Week 52 and
-
No discontinuation of investigational product or
use of restricted medications beyond the
protocol-allowed thresholda before assessment
The proportion of subjects with a ≥50% 
reduction in Cutaneous Lupus Erythematosus 
Disease Area and Severity Index (CLASI) 
activity score at Week 12 in the sub-group of 
subjects with baseline CLASI activity score 
≥10
50% reduction in CLASI activity score compared to 
baseline defined by the following criteria:
-
Achieve ≥50% reduction of CLASI activity
score at Week 12 compared to baseline and
-
No discontinuation of investigational product or
use of restricted medications beyond the
protocol-allowed thresholda before assessment
The proportion of subjects with SRI(4) at 
Week 24
SRI(4) (see outcome measure for primary objective)
The annualised flare rate through 52 weeks
Annualised flare rate with flare defined as either 1 or 
more new BILAG-2004 A or 2 or more new 
BILAG-2004 B items compared to the previous visit
Other Secondary Objectives:
Outcome Measures:
To evaluate the effect of anifrolumab 150 mg 
compared to placebo on disease activity as 
measured by the difference in the proportion of 
subjects who achieve SRI(4) at Week 52
SRI(4) (see endpoint for primary objective)
To assess the difference between anifrolumab 
300 mg and placebo on measures of disease 
activity including levels of SRI response other 
than 4, British Isles Lupus Assessment Group -
based Composite Lupus Assessment (BICLA), 
the individual components of SRI, and the 
number of swollen and tender joints at 
Week 52, as well as SRI and BICLA over time
SRI(4), SRI(5), SRI(6), SRI(7), SRI(8), BICLA 
response, BILAG-2004, SLEDAI-2K, PGA, Major 
Clinical Response, Partial Clinical Response, and 
joint count
To assess the difference between anifrolumab 
300 mg and placebo on measures of organ 
damage, ie, Systemic Lupus International 
Collaborating Clinics/American College of 
Rheumatology Damage Index (SDI) at 
Week 52
SDI

Revised Clinical Study Protocol
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 5
Date 18 May 2016
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Investigational product, dosage and mode of administration
Approximately 450 subjects receiving SOC treatment will be randomised in a 1:2:2 ratio to 
receive a fixed IV dose of anifrolumab or placebo, as follows: 

Anifrolumab (MEDI-546) 150 mg IV administration Q4W OR

Anifrolumab (MEDI-546) 300 mg IV administration Q4W OR

Placebo IV administration Q4W
Statistical methods
The primary estimand of interest is the difference in change from baseline in disease activity 
between anifrolumab 300 mg and placebo, to reflect the effect of the initially assigned and 
dosed investigational product. This is measured by the primary efficacy endpoint, defined as 
the difference in the proportion of subjects achieving SRI(4) at Week 52. The full analysis set 
will be used as the primary population for reporting efficacy and safety data. The full analysis 
set is defined as subjects who are randomised and received at least 1 dose of investigational 
product (modified Intention-To-Treat).
The sample size is primarily driven by the need to acquire an adequate safety database size, as 
well as the ability to assess key secondary endpoints. The primary endpoint is the difference in 
proportions of subjects achieving SRI(4) at Week 52 comparing anifrolumab 300 mg to 
placebo. With assumed proportions of SRI(4) of 39% and 63% in the placebo and anifrolumab 
300 mg groups, respectively (based on the observed results in the interim analyses of study 
CD-IA-MEDI-546-1013), 180 subjects/arm yields more than 99% power to reject the
hypothesis of no difference using a 2-sided alpha of 0.05. The minimal detectable difference
in SRI(4) between anifrolumab 300 mg versus placebo is approximately 10% with this sample
size. With half of the sample size (ie, 90 subjects) for the anifrolumab 150 mg treatment
group, a 12.5% difference in SRI(4) between anifrolumab 150 mg versus placebo would be
associated with a nominal p-value of 0.05.
A stratified Cochran-Mantel-Haenszel test with the same stratification factors as for the 
randomisation, ie, disease activity at screening (SLEDAI-2K <10 points versus ≥10 points), 
Day 1 OCS dose (<10 mg/day versus ≥10 mg/day prednisone or equivalent), and results of the 
IFN test (high versus low) will be used for the assessment of the primary objective. 
A non-responder imputation method will be used for the handling of missing data and is 
incorporated into the definition of the primary endpoint. Subjects who discontinue from 
treatment and/or the study for any reason, as well as subjects who require restricted 
medications beyond the protocol-allowed threshold, will be imputed as failures. 
The key secondary endpoints will be analysed similarly, with the exception of the effect on 
the annualised flare rate, which will be analysed using a negative binomial regression model. 
The model will include covariates of treatment group, and the stratification factors. The 
logarithm of the follow-up time will be used as an offset variable in the model to adjust for 
subjects having different exposure times. The multiplicity of the key secondary variables will 

Revised Clinical Study Protocol
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 5
Date 18 May 2016
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be controlled using a weighted procedure with pre-determined weights for each of the key 
secondary variables.
All safety parameters will be analysed descriptively. 

Revised Clinical Study Protocol
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 5
Date 18 May 2016
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TABLE OF CONTENTS
PAGE
TITLE PAGE...........................................................................................................1
PROTOCOL SYNOPSIS.........................................................................................2
TABLE OF CONTENTS.........................................................................................8
LIST OF ABBREVIATIONS AND DEFINITION OF TERMS..........................16
1.
INTRODUCTION .................................................................................................20
1.1
Background............................................................................................................20
1.2
Rationale for study design, doses and control groups............................................22
1.2.1
Rationale for study design .....................................................................................22
1.2.2
Rationale for primary endpoint selection...............................................................23
1.2.3
Rationale for dose selection...................................................................................23
1.2.4
Rationale for duration of infusion..........................................................................23
1.2.5
Interferon test background .....................................................................................23
1.3
Benefit/risk and ethical assessment........................................................................24
1.4
Study design...........................................................................................................29
1.4.1
Steroid burst...........................................................................................................29
1.4.2
Protocol-specified steroid tapering ........................................................................30
2.
STUDY OBJECTIVES..........................................................................................32
2.1
Primary objective...................................................................................................32
2.2
Secondary objectives .............................................................................................32
2.3
Safety objective......................................................................................................34
2.4
Exploratory objective.............................................................................................34
3.
SUBJECT SELECTION, ENROLMENT, RANDOMISATION,
RESTRICTIONS, DISCONTINUATION AND WITHDRAWAL......................34
3.1
Inclusion criteria ....................................................................................................34
3.2
Exclusion criteria ...................................................................................................39
3.2.1
General exclusion criteria ......................................................................................39
3.2.2
Exclusion criteria related to concomitant medications ..........................................40
3.2.3
Exclusion criteria related to systemic lupus erythematosus and other 
diseases ..................................................................................................................42
3.2.4
Exclusion criteria related to infection and malignancy risk factors.......................43
3.3
Restrictions and concomitant medications.............................................................44
3.3.1
Excluded medications: Day 1 through the end of the study ..................................44
3.3.1.1
Medications that lead to immediate discontinuation of investigational 
product ...................................................................................................................44

Revised Clinical Study Protocol
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 5
Date 18 May 2016
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3.3.1.2
Restricted medications...........................................................................................45
3.3.1.3
Other concomitant medications .............................................................................46
3.3.2
Concomitant medications for Systemic Lupus Erythematosus standard of 
care during the study..............................................................................................46
3.3.2.1
Steroid burst and taper Week 0 (Day 1) to Week 12 .............................................49
3.3.2.2
Increase in corticosteroids from Week 12 to Week 40..........................................49
3.3.2.3
Increase in oral corticosteroids after Week 40.......................................................50
3.3.2.4
Increase in oral corticosteroids for intercurrent disease or to prevent 
adrenal insufficiency..............................................................................................50
3.3.2.5
Protocol-specified steroid tapering Week 8 to Week 40........................................50
3.3.3
Other restrictions....................................................................................................51
3.3.3.1
Fasting lipid profile................................................................................................51
3.3.3.2
Perioperative management of investigational product...........................................51
3.4
Subject enrolment and randomisation....................................................................51
3.5
Methods for ensuring blinding...............................................................................52
3.6
Unblinding .............................................................................................................53
3.6.1
Unblinding for Data and Safety Monitoring Board ...............................................53
3.7
Discontinuation of investigational product............................................................53
3.7.1
Subject decision to discontinue investigational product........................................55
3.7.2
Withdrawal of the informed consent......................................................................55
3.7.3
Lost to follow-up....................................................................................................55
3.7.4
Study completion and end of study........................................................................55
3.7.5
Procedures for discontinuation of a subject from investigational product ............55
3.8
Criteria for withdrawal...........................................................................................56
3.8.1
Screen failures........................................................................................................56
3.9
Discontinuation of the study ..................................................................................56
4.
STUDY PLAN AND TIMING OF PROCEDURES.............................................57
4.1
Enrolment/Screening Period ..................................................................................66
4.1.1
Other considerations for screening ........................................................................66
4.1.1.1
Oral examination....................................................................................................66
4.1.1.2
Mammography.......................................................................................................66
4.1.2
Re-screening subjects who screen fail ...................................................................66
4.2
Treatment Period....................................................................................................67
4.2.1
Premature discontinuation of investigational product ...........................................67
4.3
Unscheduled Visit..................................................................................................68
4.4
Follow-up Period ...................................................................................................68
5.
STUDY ASSESSMENTS .....................................................................................69
5.1
Description of study procedures ............................................................................69
5.2
Efficacy assessments..............................................................................................69

Revised Clinical Study Protocol
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 5
Date 18 May 2016
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5.2.1
Training and certification for Systemic Lupus Erythematosus assessments .........69
5.2.2
Disease Activity Adjudication Group....................................................................70
5.2.3
Systemic Lupus Erythematosus Disease Activity Index 2000...............................70
5.2.4
British Isles Lupus Assessment Group-2004.........................................................71
5.2.4.1
Protocol-specific clarification and extension of BILAG-2004 definitions............72
5.2.5
Physician Global Assessment ................................................................................72
5.2.6
Oral corticosteroid reduction .................................................................................73
5.2.7
Systemic Lupus International Collaborating Clinics/American College of 
Rheumatology Damage Index................................................................................73
5.2.8
Cutaneous Lupus Erythematosus Disease Area and Severity Index 
inflammatory disease activity ................................................................................73
5.2.9
Skin photography...................................................................................................74
5.2.10
Joint count..............................................................................................................74
5.3
Safety assessments.................................................................................................74
5.3.1
Adverse events.......................................................................................................74
5.3.2
Vital signs ..............................................................................................................75
5.3.3
Physical examination .............................................................................................75
5.3.3.1
Complete physical examination.............................................................................75
5.3.3.2
Focused physical examination ...............................................................................75
5.3.3.3
Pap smear...............................................................................................................75
5.3.3.4
Assessment of Cushingoid features .......................................................................76
5.3.4
Assessment of cardiovascular risk.........................................................................76
5.3.5
Columbia Suicide Severity Rating Scale ...............................................................76
5.3.6
Personal Health Questionnaire Depression Scale-8...............................................77
5.3.7
Electrocardiogram..................................................................................................77
5.3.8
Tuberculosis screening and monitoring.................................................................77
5.3.8.1
Screening evaluation..............................................................................................77
5.3.8.2
Tuberculosis results from screening evaluations ...................................................78
5.3.8.3
Tuberculosis monitoring during the study .............................................................78
5.3.9
Modified flare index ..............................................................................................79
5.3.10
Clinical laboratory tests .........................................................................................79
5.3.11
Laboratory assessments for cardiovascular risk assessments ................................82
5.3.11.1
Fasting lipid profile................................................................................................82
5.3.11.2
Immunology profile ...............................................................................................82
5.4
Clinical pharmacology assessments.......................................................................83
5.4.1
Pharmacokinetics ...................................................................................................83
5.4.2
Immunogenicity .....................................................................................................83
5.4.2.1
Anti-drug antibodies ..............................................................................................83
5.4.2.2
Neutralising antibodies ..........................................................................................83
5.4.3
Pharmacodynamics ................................................................................................83
5.4.4
Interferon test in whole blood................................................................................84
5.4.5
Proteomics/biomarkers ..........................................................................................84
5.4.6
Storage and destruction of biological samples.......................................................85
5.5
Quality of life/pharmacoeconomic assessments ....................................................85

Revised Clinical Study Protocol
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 5
Date 18 May 2016
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5.5.1
Short Form 36 version 2 (acute recall) ..................................................................85
5.5.2
Functional Assessment of Chronic Illness Therapy–FATIGUE ...........................85
5.5.3
EuroQoL 5 dimensions ..........................................................................................85
5.5.4
Lupus Quality of Life.............................................................................................86
5.5.5
Patient Global Assessment.....................................................................................86
5.5.6
Work productivity and Activity Impairment .........................................................86
5.5.7
Medical Resource Use Questionnaire....................................................................86
5.5.8
Pain numerical rating scale ....................................................................................86
6.
SAFETY REPORTING AND MEDICAL MANAGEMENT ..............................87
6.1
Definition of adverse events ..................................................................................87
6.2
Definition of serious adverse events......................................................................87
6.3
Hy’s law.................................................................................................................87
6.4
Other events of special interest..............................................................................87
6.4.1
Overdose ................................................................................................................87
6.4.2
Pregnancy...............................................................................................................88
6.4.3
Maternal exposure..................................................................................................88
6.4.4
Paternal exposure...................................................................................................88
6.5
Adverse Events of Special Interest ........................................................................89
6.5.1
Non-opportunistic serious infection.......................................................................89
6.5.2
Opportunistic infection ..........................................................................................89
6.5.3
Anaphylaxis ...........................................................................................................90
6.5.4
Malignancy ............................................................................................................90
6.5.5
Herpes zoster..........................................................................................................90
6.5.6
Tuberculosis...........................................................................................................90
6.5.7
Influenza ................................................................................................................91
6.5.8
Vasculitis (non-Systemic Lupus Erythematosus) ..................................................92
6.5.9
Major acute cardiovascular events.........................................................................92
6.6
Recording of adverse events ..................................................................................92
6.6.1
Time period for collection of adverse events.........................................................92
6.6.2
Follow-up of unresolved adverse events................................................................92
6.6.3
Variables ................................................................................................................92
6.6.4
Causality collection................................................................................................94
6.6.5
Adverse events based on signs and symptoms.......................................................94
6.6.6
Adverse events based on examinations and tests...................................................94
6.6.7
Disease progression/worsening of systemic lupus erythematosus.........................94
6.7
Reporting of serious adverse events.......................................................................95
6.8
Reporting of adverse events of special interest......................................................96
6.9
Management of investigational product-related toxicities.....................................96
6.9.1
Anaphylaxis, hypersensitivity, and infusion-related reactions ..............................96
6.9.2
Infections................................................................................................................96
6.10
Study governance and oversight ............................................................................97

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Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 5
Date 18 May 2016
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6.10.1
Data and Safety Monitoring Board........................................................................97
7.
INVESTIGATIONAL PRODUCT AND OTHER TREATMENTS ....................98
7.1
Identity of investigational products........................................................................98
7.2
Dose and treatment regimens.................................................................................98
7.2.1
Dose preparation steps ...........................................................................................98
7.2.2
Prior to administering the investigational product.................................................98
7.2.3
Investigational product administration procedures................................................99
7.2.4
Subject monitoring/procedures during and after the infusion................................99
7.2.5
Discharge .............................................................................................................100
7.2.6
Documentation of investigational product administration...................................100
7.3
Labelling ..............................................................................................................101
7.4
Storage .................................................................................................................101
7.5
Compliance ..........................................................................................................101
7.6
Accountability......................................................................................................101
7.7
Post study access to study treatment....................................................................102
8.
STATISTICAL ANALYSES ..............................................................................102
8.1
Statistical considerations......................................................................................102
8.2
Sample size estimate............................................................................................102
8.3
Definitions of analysis sets ..................................................................................103
8.3.1
All subjects analysis set .......................................................................................103
8.3.2
Full analysis set....................................................................................................103
8.3.3
Pharmacokinetic analysis set ...............................................................................103
8.4
Outcome measures for analyses...........................................................................104
8.4.1
Primary outcome variable....................................................................................104
8.4.2
Key secondary outcome variables........................................................................104
8.4.2.1
Systemic Lupus Erythematosus Responder Index of ≥4 at Week 52 in 
interferon test-high subjects.................................................................................104
8.4.2.2
Oral corticosteroid management..........................................................................104
8.4.2.3
Skin lesions ..........................................................................................................105
8.4.2.4
Systemic Lupus Erythematosus Responder Index of ≥4 at Week 24 ..................105
8.4.2.5
Flares....................................................................................................................105
8.4.3
Other secondary outcome variables.....................................................................105
8.4.3.1
Assessment of disease activity.............................................................................105
8.4.4
Subject reported outcome variables.....................................................................107
8.4.4.1
Short Form 36 version 2 (acute recall) ................................................................107
8.4.4.2
Pain Numerical Rating Scale ...............................................................................107
8.4.4.3
Functional Assessment of Chronic Illness Therapy-FATIGUE ..........................108
8.4.4.4
Patient Global Assessment...................................................................................108
8.4.4.5
LUPUS quality of life scale .................................................................................108
8.4.4.6
EuroQoL 5 dimensions ........................................................................................108

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Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 5
Date 18 May 2016
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8.4.4.7
Work productivity and Activity Impairment - Lupus..........................................108
8.4.4.8
Medical Resource Use Questionnaire..................................................................108
8.4.5
Safety variables....................................................................................................108
8.4.5.1
Other significant adverse events ..........................................................................109
8.4.6
Immunogenicity variables....................................................................................109
8.4.7
Pharmacokinetic variables ...................................................................................109
8.4.8
Pharmacodynamic outcome variables..................................................................109
8.5
Methods for statistical analyses ...........................................................................109
8.5.1
Analysis of the primary variable..........................................................................111
8.5.2
Analysis of the secondary variables.....................................................................112
8.5.2.1
Analysis methods for key secondary efficacy variables......................................112
8.5.2.2
Analysis methods for other secondary efficacy variables....................................112
8.5.2.3
Analysis methods for safety variables .................................................................113
8.5.2.4
Analysis method for immunogenicity variables ..................................................114
8.5.2.5
Analysis methods for pharmacokinetic variables ................................................114
8.5.2.6
Analysis methods for pharmacodynamic variables .............................................114
8.5.3
Subgroup analysis ................................................................................................114
8.5.4
Interim analysis....................................................................................................114
8.5.5
Pooled analysis.....................................................................................................115
9.
STUDY AND DATA MANAGEMENT.............................................................115
9.1
Monitoring of the study .......................................................................................115
9.1.1
Source data...........................................................................................................115
9.1.2
Study agreements.................................................................................................115
9.1.3
Archiving of study documents.............................................................................116
9.2
Study timetable and end of study.........................................................................116
9.3
Data management.................................................................................................116
10.
ETHICAL AND REGULATORY REQUIREMENTS.......................................117
10.1
Ethical conduct of the study.................................................................................117
10.2
Subject data protection.........................................................................................117
10.3
Ethics and regulatory review................................................................................117
10.4
Informed consent .................................................................................................118
10.5
Changes to the protocol and informed consent form...........................................118
10.6
Audits and inspections .........................................................................................119
11.
LIST OF REFERENCES.....................................................................................119
LIST OF TABLES
Table 1
Effective methods of birth control............................................................37

Revised Clinical Study Protocol
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 5
Date 18 May 2016
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Table 2
Study plan detailing the procedures at screening .....................................57
Table 3
Study plan detailing the procedures during the Treatment Period 
(double-blind period)................................................................................59
Table 4
Study plan detailing the procedures during Follow-up ............................64
Table 5
Clinical laboratory tests............................................................................80
Table 6
Compatible materials of construction for IV bags..................................101
Table 7
Compatible materials of construction for ancillaries (eg, infusion 
tubing).....................................................................................................101
LIST OF FIGURES
Figure 1
Distribution of IFN transcript scores........................................................24
Figure 2
Study flow chart .......................................................................................31
Figure 3
Alpha recycling.......................................................................................110
LIST OF APPENDICES
Appendix A
Signatures (Not applicable)
Appendix B
Additional Safety Information 
Appendix C
Actions Required in Cases of Combined Increase of Aminotransferase and 
Total Bilirubin – Hy’s Law
Appendix D 
American College of Rheumatology Classification Criteria
Appendix E 
Systemic Lupus Erythematosus Disease Activity Index 2000
Appendix F 
British Isles Lupus Assessment Group-2004
Appendix G 
Physician Global Assessment
Appendix H
Systemic Lupus International Collaborating Clinics/American College of 
Rheumatology Damage Index
Appendix I
Cutaneous Lupus Erythematosus Disease Area and Severity Index
Appendix J
Columbia Suicide Severity Rating Scale
Appendix K
Personal Health Questionnaire Depression Scale-8

Revised Clinical Study Protocol
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 5
Date 18 May 2016
15(125)
Appendix L
Short Form 36 Version 2 (Acute Recall)
Appendix M
Functional Assessment of Chronic Illness Therapy-FATIGUE
Appendix N
EuroQoL 5 Dimensions
Appendix O
LupusQoL Questionnaire
Appendix P
Patient Global Assessment
Appendix Q
Work Productivity and Activity Impairment
Appendix R
Pain Numeric Rating Scale
Appendix S
Medical Resource Use Questionnaire
Appendix T
Vasculitic Syndromes Excluded from the Study
Appendix U
Restricted Medications
Appendix V
Oral Corticosteroid Guidance
Appendix W
General Guidance for Determination of Major Surgery
Appendix X
Guidance for Abnormal Pap Smear Results
Appendix Y
Anaphylaxis
Appendix Z 
Modified Flare Index

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LIST OF ABBREVIATIONS AND DEFINITION OF TERMS
The following abbreviations and special terms are used in this study Clinical Study Protocol.
Abbreviation or 
special term
Explanation
ACR
American College of Rheumatology
ADA
Anti-drug antibodies
ADL
Activity of daily living
AE
Adverse event
AESI
Adverse event of special interest
AIS
Adenocarcinoma in situ 
ALT
Alanine aminotransferase
ANA
Antinuclear antibody
Anti-Sm
Anti-Smith 
Anti-RNP
Anti-Ribonucleoprotein
Anti-SSA
Anti-Sjogren’s Syndrome-related antigen A
Anti-SSB
Anti-Sjogren’s Syndrome-related antigen B
AST
Aspartate aminotransferase
β-hCG
β-human chorionic gonadotropin
BCG
Bacillus Calmette-Guerin
BICLA
British Isles Lupus Assessment Group-based Composite Lupus Assessment
BILAG
British Isles Lupus Assessment Group
BP
Blood pressure
C3
Third component of complement
C4
Fourth component of complement
CH50
Total haemolytic complement
CHMP
Committee for Medicinal Products for Human Use
CI
Confidence interval
CIN III
Cervical intraepithelial neoplasia grade III 
CIS
Carcinoma in situ 
CLASI
Cutaneous Lupus Erythematosus Disease Area and Severity Index
CLE
Cutaneous Lupus Erythematosus

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Abbreviation or 
special term
Explanation
CNS
Central nervous system
COPD
Chronic obstructive pulmonary disease
CRF
Case Report Form (electronic/paper)
CSA
Clinical Study Agreement
C-SSRS
Columbia Suicide Severity Rating Scale
CSR
Clinical Study Report
CT
Computed tomography
CV-EAC
Cardiovascular Event Adjudication Committee 
dECG
Digital electrocardiogram
DEHP
Diethylhexyl phthalate
DSMB
Data and Safety Monitoring Board
DNA
Deoxyribonucleic acid 
dsDNA
Double-stranded deoxyribonucleic acid
EC
Ethics Committee, synonymous to Institutional Review Board (IRB) and 
Independent Ethics Committee (IEC)
ECG
Electrocardiogram
EDC
Electronic data capture 
EMA
European Medicines Agency
EQ-5D-5L
EuroQoL 5 dimensions
EudraCT
European Clinical Trials Database
EULAR
European League Against Rheumatism
FACIT-F
Functional Assessment of Chronic Illness Therapy-FATIGUE
FDA
Food and Drug Administration
FSH
Follicle-stimulating hormone
GCP
Good Clinical Practice
GMP
Good Manufacturing Practice
HBcAb
Hepatitis B core antibody
HBsAg
Hepatitis B surface antigen
HBV DNA
Hepatitis B virus DNA
HIPAA
Health Insurance Portability and Accountability Act
HIV
Human immunodeficiency virus

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Abbreviation or 
special term
Explanation
ICF
Informed consent form
ICH
International Conference on Harmonisation
ICU
Intensive care unit
IFA
Immunofluorescent assay
IFIGx
Interferon-inducible gene expression
IFN
Interferon
Ig
Immunoglobulin
IGRA
Interferon-gamma release assay
International 
Coordinating 
Investigator
If a study is conducted in several countries the International Coordinating 
Investigator is the Investigator coordinating the Investigators and/or 
activities internationally. 
IV
Intravenous
IXRS
Interactive voice/web response system
LLOQ
Lower limit of quantitation
LTE
Long-term extension
MACE
Major adverse cardiovascular events 
MedDRA
Medical Dictionary for Regulatory Activities
MI
Myocardial infarction
MRI 
Magnetic resonance imaging
mRNA
Messenger ribonucleic acid
nAb
Neutralising antibodies 
NSAIDs
Nonsteroidal anti-inflammatory drugs
OCS
Oral corticosteroids
PD
Pharmacodynamic
PGA
Physician’s Global Assessment
PHQ-8
Personal Health Questionnaire Depression Scale-8
PI
Principal Investigator 
PIP
Proximal interphalangeal
PK
Pharmacokinetic(s)
PtGA
Patient Global Assessment
PVC
Polyvinyl chloride
Q4W
Every 4 weeks

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Abbreviation or 
special term
Explanation
QFT-G
QuantiFERON-TB Gold
QoL
Quality of life
RGQ
Rotor-Gene Q
RNA
Ribonucleic acid
RT-PCR
Reverse transcriptase polymerase chain reaction
SAE
Serious adverse event 
SAP
Statistical analysis plan
SC
Subcutaneous
SDI
Systemic Lupus International Collaborating Clinics/American College of 
Rheumatology Damage Index
SF-36v2 (acute)
Short Form 36 version 2 (acute recall)
SLE
Systemic lupus erythematosus
SLEDAI-2K
Systemic Lupus Erythematosus Disease Activity Index 2000
SMR
Standardised mortality ratio
SOC
Standard of care
SRI(4)
Systemic Lupus Erythematosus Responder Index of ≥4 
TB
Tuberculosis
ULN
Upper limit of normal
VAS
Visual analogue scale
WPAI
Work productivity and Activity Impairment

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1.
INTRODUCTION
1.1
Background 
Systemic lupus erythematosus (SLE) is a chronic, multisystemic, disabling autoimmune 
rheumatic disease of unknown aetiology. Systemic lupus erythematosus predominantly affects 
women of childbearing years (Cooper et al, 1998; Lahita, 1999) with a review reporting the 
female-to-male ratio in the childbearing years to be about 12:1 (Ramsey-Goldman and Manzi, 
2000). There is substantial unmet medical need in the treatment of SLE, particularly in 
subjects with moderate or severe disease. Although off-label therapy has improved 
management options in recent years, long-term prognosis remains poor for many subjects. 
Compared to the general population, the overall mortality in SLE is increased with a 
standardised mortality ratio (SMR; defined as the ratio of the number of deaths observed to 
deaths expected) of 2.4, (2.3 to 2.5 95% confidence interval [CI]) in a large international 
cohort of 9,457 subjects followed for over 70000 subject-years (Bernatsky et al, 2006).
Clinical manifestations of SLE include, but are not limited to, constitutional symptoms, 
alopecia, rashes, serositis, arthritis, nephritis, vasculitis, lymphadenopathy, splenomegaly, 
haemolytic anaemia, cognitive dysfunction and other nervous system involvement. These 
disease manifestations cause a significant burden of illness and can lead to reduced physical 
function, loss of employment, lower health-related quality of life (QoL), and a lifespan 
shortened by about 10 years (ACR ad hoc committee, September 1999). Increased 
hospitalisations and side effects of medications including chronic oral corticosteroids (OCS) 
and other immunosuppressive treatments add to disease burden in SLE (Doria and Briani, 
2008; Petri, 2001; Zonana-Nanach et al, 2000).
All of the therapies currently used for the treatment of SLE have well known adverse effect 
profiles and there is a medical need to identify new targeted therapies, particularly agents that 
may reduce the requirement for corticosteroids and cytotoxic agents.
There has been only 1 new treatment (belimumab) for SLE approved by the US Food and 
Drug Administration (FDA) and European Medicines Agency (EMA) in the approximately 
50 years since hydroxychloroquine was approved for use in discoid lupus and SLE. However, 
belimumab is not approved everywhere, and the uptake has been modest. Many agents 
currently used to treat SLE, such as azathioprine, cyclophosphamide, and mycophenolate 
mofetil/mycophenolic acid, have not been approved for the disease. Furthermore these drugs 
all have well-documented safety issues and are not effective in all patients for all 
manifestations of lupus. Antimalarial agents (eg, hydroxychloroquine) and corticosteroids 
may be used to control arthralgia, arthritis, and rashes. Other treatments include nonsteroidal 
anti-inflammatory drugs (NSAIDs); analgesics for fever, arthralgia, and arthritis; and topical 
sunscreens to minimise photosensitivity. It is often difficult to taper subjects with moderate or 
severe disease completely off corticosteroids, which cause long-term morbidity and may 
contribute to early cardiovascular mortality (Petri, 2001; Urowitz et al, 1976). Even small 
daily doses of 5 to 10 mg prednisone used long-term carry increased risks of side effects such 
as cataracts, osteoporosis, and coronary artery disease (Petri, 2001).

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Multiple lines of evidence indicate a role of type I interferons (IFNs) in the pathogenesis of 
SLE:

Genetic polymorphisms associated with type I IFNs are associated with
susceptibility to SLE (Criswell, 2008, Sigurdsson, Göring et al, 2008; Sigurdsson,
Nordmark et al, 2008).

High IFN-α levels and type I IFN activity have been reported in SLE (Bengtsson et
al, 2000, Dall’era et al, 2005).

Increased levels of messenger ribonucleic acid (mRNA), whose transcription is
induced by type I IFNs (type I IFN signature), are prominent in peripheral blood
mononuclear cells and whole blood in approximately 60% of SLE subjects and are
associated with greater disease activity (Baechler et al, 2003, Bennett et al, 2003,
Crow and Wohlgemuth, 2003, Feng X et al, 2006, Kirou et al, 2004, Kirou et al,
2005). Transcripts induced by type I IFN are the most overexpressed transcripts in
SLE (Yao et al, 2010).

Proteins induced by IFN are increased in subjects with SLE (Huang et al, 2008,
Hylton et al, 1986, Okamoto et al, 2004).

Overexpression of type I IFN, type I IFN signature, and proteins induced by type I
IFNs have been associated with greater disease activity and organ system
involvement in SLE.
Subjects with high anti-double stranded deoxyribonucleic acid (anti-dsDNA) antibody titres, 
lupus nephritis, and progressive skin rashes have high serum levels of type I IFN (Bengtsson 
et al, 2000). In addition, subjects with acute skin involvement tend to have elevated IFN in 
blood and skin (Dall’era et al, 2005). Skin biopsies from subjects with SLE also show 
increased type I IFN signature (Blomberg S et al, 2001, Farkas et al, 2001, Yao et al, 2009). 
Proteins induced by IFN are increased in subjects with active central nervous system (CNS) 
symptoms (Okamoto et al, 2004).
Immune complexes containing SLE autoantibodies, such as anti-dsDNA or 
antiribonucleoprotein (anti-RNP) antibodies, can activate type I IFN production (Bengtsson et 
al, 2000, Rönnblom and Alm, 2003). After internalisation through Fc receptors, 
autoantibody-containing immune complexes bind endosomal toll-like receptor 7 (TLR7) and 
toll-like receptor 9 (TLR9), stimulating production of type I IFN. Type I IFN stimulates 
monocyte derived dendritic cell maturation, which promotes loss of tolerance and generation 
of autoreactive T and B cells, autoantibody production, immune complex formation, and 
further production of type I IFN, creating a self-perpetuating cycle of autoimmunity 
(Banchereau et al, 2004, Pascual et al, 2006, Rönnblom and Pascual, 2008).
With the growing evidence that type I IFNs play an important role in autoimmune diseases 
such as SLE, inhibition of the biological activity of type I IFNs with anifrolumab may, 
therefore, be a novel efficacious therapy for the treatment of SLE and its significant unmet 
medical need.

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Anifrolumab (MEDI-546) is a human immunoglobulin G1 kappa (IgG1κ) monoclonal 
antibody (mAb) directed against subunit 1 of the type I interferon receptor (IFNAR1). It is 
composed of 2 identical light chains and 2 identical heavy chains, with an overall molecular 
weight of approximately 148 kDa. Anifrolumab inhibits binding of type I IFN to type I 
interferon receptor (IFNAR) and inhibits the biologic activity of all type I IFNs. 
1.2
Rationale for study design, doses and control groups
1.2.1
Rationale for study design
This is a Phase 3, multicentre, multinational, randomised, double-blind, placebo-controlled 
study to evaluate the efficacy and safety of an intravenous (IV) treatment regimen of 
anifrolumab (150 mg or 300 mg) versus placebo in adult subjects with moderately to severely 
active, autoantibody-positive SLE while receiving standard of care (SOC) treatment. 
It is thought that neutralisation of IFN signalling through the human type I IFN receptor with 
anifrolumab will reduce the severity of disease activity in subjects with chronic, 
moderately-to-severely active SLE, and that anifrolumab will be well tolerated when given at 
the proposed doses for the duration of the study.
To ensure adequate treatment, all subjects will receive SOC treatment with at least 1 of the
following: OCS, antimalarial, or immunosuppressants, in addition to investigational product. 
This is consistent with the both the European League Against Rheumatism (EULAR) 
(Bertsias et al, 2008) and American College of Rheumatology (ACR) (ACR ad hoc 
committee, September 1999) management guidelines of moderate to severe SLE.
The study will be randomised, placebo-controlled, and double-blind to ensure a robust design 
and minimise bias. This is the preferred design as outlined in the June 2010 FDA Guidance for 
Industry Systemic Lupus Erythematosus-Developing Medical Products for Treatment and in 
the Committee for Medicinal Products for Human Use (CHMP) Guideline on clinical 
investigation of medicinal products for the treatment of SLE and lupus nephritis (CHMP, 
February 2015).
Randomisation will be stratified by Systemic Lupus Erythematosus Disease Activity Index 
2000 (SLEDAI 2K, see Appendix E) score at screening (<10 points versus ≥10 points), Day 1
OCS dose (<10 mg/day versus ≥10 mg/day of prednisone or equivalent), and the results of the 
IFN test (high versus low). Stratification is implemented in order to minimise the risk for 
baseline imbalance(s) across treatment arms on potentially confounding variables. Baseline 
imbalances of these factors could impact efficacy and/or safety assessments of anifrolumab 
versus placebo.
A treatment period of 52 weeks is an appropriate study duration to determine the 
investigational product’s long-term efficacy and safety profile.

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1.2.2
Rationale for primary endpoint selection
The primary outcome measure is the proportion of subjects who achieve Systemic Lupus 
Erythematosus Responder Index of ≥4 (SRI[4]) at Week 52. This endpoint was employed as 
the primary endpoint in both pivotal studies of a large phase 3 program (Furie et al, 2009, 
Navarra et al, 2011, Wallace et al, 2009) in SLE and provided the basis for regulatory 
approvals of belimumab. 
1.2.3
Rationale for dose selection
The selection of a dose of 300 mg anifrolumab every 4 weeks (Q4W) for this study is based 
on safety and efficacy results from the interim analysis of a Phase 2b study where 2 doses of 
anifrolumab (300 mg and 1000 mg) are evaluated relative to placebo as well as dose-response 
modelling and simulation. In the interim analysis of the Phase 2b study, clinically meaningful 
benefit was observed with the 300 mg dose, with no incremental benefit at 1000 mg, see 
Section 1.3 for details. In addition, a higher proportion of subjects reporting herpes zoster
reactivations was observed at 1000 mg compared to 300 mg. Given the comparable efficacy 
between the 300 and 1000 mg anifrolumab doses and the increased frequency of herpes zoster
events in the 1000 mg dose group relative to the 300 mg dose group, the benefit:risk profile 
appears to favour the 300 mg dose. Further, from the PK/efficacy model, minimal 
improvement in efficacy was predicted for doses higher than 300 mg, consistent with the 
observed Phase 2b study interim analysis data. The model also predicted that doses lower than 
300 mg will result in lower efficacy since trough concentrations (Ctrough) from doses lower 
than 300 mg will fall below the model-predicted concentrations corresponding to 80% of 
maximum SRI(4) efficacy. The non-linear PK properties of anifrolumab cause a large increase 
in Ctrough variability at doses below 300 mg, so as anifrolumab dose is lowered, a large 
proportion of subjects are predicted to have very rapid clearance and negligible exposure to 
anifrolumab. A dose of 150 mg is evaluated in this study to provide supportive evidence that 
300 mg is the minimum effective dose of anifrolumab.
1.2.4
Rationale for duration of infusion
In a Phase 2b study where 2 doses of anifrolumab in combination with SOC (300 mg and 
1000 mg) were compared to placebo, combined with SOC, all doses were administered over 
approximately 60 minutes. The frequency of infusion-related reactions did not differ 
substantially between the 300 mg (2.0%) and 1000 mg (3.8%) groups and both were lower 
than that observed in the placebo group (5.9%). Therefore, in this study the infusion time was 
reduced to a minimum of 30 minutes.
1.2.5
Interferon test background
Type I IFN has been considered to be important in SLE disease pathogenesis and inhibition of 
this pathway is targeted by anifrolumab. To understand the relationship between type I IFN 
expression and response to anti-IFN therapy, it is necessary to know if a subject’s disease is 
driven by type I IFN activation. However, direct measurement of the target protein remains a 
challenge. As such, a transcript-based marker was developed to evaluate the effect of over 
expression of the target protein on a specific set of mRNA markers. The expression of these 
markers is easily detected in whole blood and demonstrates a correlation with expression in 

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
Study CD-IA-MEDI-546-1013 is an ongoing Phase 2b, randomised, double-blind, 
placebo controlled study of anifrolumab (300 and 1000 mg) in adult subjects with 
moderately to severely active SLE (ongoing at the time of writing this protocol).

Study CD-IA-MEDI-546-1145 is the ongoing open-label extension (OLE) for 
subjects completing Study CD-IA-MEDI-546-1013 (ongoing at the time of writing 
this protocol).

Study D3461C00002 is an ongoing study in Japanese adult subjects with SLE 
(ongoing at the time of writing this protocol).

Study D3461C00001 is an ongoing study in adult subjects with lupus nephritis 
(ongoing at the time of amending this protocol).
Study CD-IA-MEDI-546-1013 is a Phase 2b, randomised, double-blind, placebo-controlled, 
parallel group study to evaluate the efficacy and safety of anifrolumab in adult subjects with 
chronic, moderately to severely active SLE with an inadequate response to SOC treatment for 
SLE. Subjects were randomised 1:1:1 to placebo, anifrolumab 300 mg or anifrolumab
1000 mg while continuing their SOC treatment. Enrolment in the study is complete. An 
interim analysis (including the analysis of the primary endpoint) was conducted after all 
subjects completed the Day 169 visit or discontinued from study treatment early. As of the 
data cut-off date of August 15, 2014, a total of 305 subjects had been treated with 
investigational product (2 subjects discontinued from the study prior to dosing). 
Efficacy in anifrolumab Phase 2b study
The primary efficacy endpoint of the Phase 2b study was the proportion of subjects achieving 
response in Systemic Lupus Erythematosus Responder Index (4) (SRI[4]) with sustained 
reduction of OCS (<10 mg/day and less than or equal to the dose received on Day 1 by Day 85 
and maintained between Days 85 and 169) at Day 169. There were higher proportions of 
subjects in the 300 mg (34.3%) and 1000 mg (28.8%) anifrolumab groups than in the placebo 
(17.6%) group who met the primary endpoint at Day 169. Similar results were also observed 
in the other co-primary population, the IFN test-high subjects (representing approximately 
75% of the study population) but not in the IFN test-low subjects at Day 169 (it is important to 
note that the sample size is low in this subpopulation). Further, compared to the placebo 
group, numerically higher proportions of subjects in the anifrolumab groups met the 
secondary endpoints of SRI(4) with sustained reduction of OCS (<10 mg/day and less than or 
equal to the dose received on Day 1 by Day 281 and maintained between Days 281 and 365)
at Day 365 (placebo [25.5%], 300 mg [51.5%] and 1000 mg [38.5%]) and reduction of 
background OCS dose to ≤7.5 mg/day at Day 365 in those taking ≥10 mg/day at baseline 
(placebo [26.6%], 300 mg [56.4%], and 1000 mg [31.7%]). 
The efficacy observed with the primary and secondary endpoints was supported by a wide 
range of evidence. A numerically higher proportion of subjects receiving anifrolumab met SRI 
response criteria without the OCS taper requirement at Day 169 and Day 365 compared to 
placebo. Furthermore, compared to the placebo group numerically higher proportions of 
anifrolumab treated subjects achieved SRI(5), SRI(6), SRI(7), and SRI(8) response, as well as 

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a British Isles Lupus Assessment Group (BILAG)-2004 based combined lupus assessment 
(BICLA) response.
Higher response rates were also observed in organ specific measures for anifrolumab-treated 
subjects compared with placebo. In subjects with moderate or severe skin disease (Cutaneous 
Lupus Erythematosus Disease Area and Severity Index [CLASI] activity score ≥10) at 
baseline, a numerically higher proportion of subjects achieved at least 50% improvement from 
baseline in the CLASI activity score following anifrolumab treatment compared to subjects 
receiving placebo. In subjects with moderate or severe arthritis (≥8 swollen and tender joints) 
at baseline, a numerically higher proportion of subjects treated with 300 mg anifrolumab 
achieved at least 50% improvement in swollen and tender joint counts compared to subjects 
treated with placebo.
Amongst subjects with a dose of ≥10 mg/day oral prednisone or equivalent at baseline, a 
numerically higher proportion of subjects in the 300 mg anifrolumab group than in the 
placebo group were able to reduce OCS to ≤7.5 mg/day prednisone or equivalent by Day 169. 
Similar results were seen at Day 365. No apparent differences were seen when comparing the 
1000 mg anifrolumab and placebo groups.
Serum complement and anti-dsDNA antibody levels are often indicative of active disease in 
SLE. In subjects with detectable anti-dsDNA autoantibody levels at baseline, those treated 
with 300 mg anifrolumab demonstrated a numerically larger decrease from baseline in anti-
dsDNA antibody levels at Day 365 than those who were treated with placebo. In subjects with 
abnormal third component of complement (C3) levels at baseline, those treated with 
anifrolumab demonstrated a numerically larger increase from baseline in C3 levels at Day 169 
and 365 than those who were treated with placebo. 
Expression of type I IFN-inducible genes in whole blood using a 21-gene panel 
(pharmacodynamic [PD] marker) decreased following anifrolumab administration for all dose 
groups in subjects with a baseline positive type I IFN signature in whole blood. Both the 
300 mg and 1000 mg anifrolumab dose achieved and maintained 82 to 90% neutralisation of 
the gene signature. In the placebo group no neutralisation of the gene signature (>6%) was 
observed at any time point.
Safety experience in anifrolumab Phase 2b study through August 2014 
Although the safety profile for anifrolumab is acceptable, an imbalance was seen in the rate of 
occurrence of uncomplicated herpes zoster reactivation.
The overall number of subjects with adverse events (AEs), serious adverse events (SAEs) and 
adverse events of special interest (AESIs) (new or reactivated tuberculosis [TB], malignancy, 
infusion or hypersensitivity or anaphylactic reaction and non SLE-related vasculitis) were 
similar between the placebo and anifrolumab groups. Serious adverse events related to the 
investigational product were observed in 5.9% of the subjects in the placebo, 3.0% in the 
300 mg and 1.0% in the 1000 mg anifrolumab group. Adverse events leading to 
discontinuation of the investigational product were observed in 7.9% in the placebo, 3.0% in 

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the 300 mg and 9.5% in the 1000 mg anifrolumab group. There was 1 death in the 1000 mg 
anifrolumab group (
) and none in the other 2 treatment groups.
There was a higher number of subjects with infection-related AEs in both the 300 mg (63.6%) 
and 1000 mg (61.9%) anifrolumab groups compared with the placebo group (51.5%). This 
was due primarily to more reports of uncomplicated cases of herpes zoster in the anifrolumab 
treated subjects (300 mg: 5.1%; 1000 mg: 9.5%) compared to placebo (2.0%). Importantly, 
subjects with herpes zoster infection responded to standard antiviral treatment. One treatment-
emergent SAE of transverse myelitis with a positive varicella zoster virus polymerase chain 
reaction in cerebrospinal fluid was reported. The subject recovered following treatment with 
pulsed steroid and standard antiviral medication.
There was a higher number of subjects with infections reported as influenza in the 
anifrolumab groups (300 mg: 6.1%; 1000 mg: 7.6%) compared to placebo (2.0%); however, 
the protocol did not require objective evidence confirming the aetiology of these infections. 
Infusion-related reactions were observed in 5.9% of placebo treated subjects: 2.0% in the 
300 mg anifrolumab group and 3.8% in the 1000 mg anifrolumab group. The characteristics 
and severity of these reactions were similar in all 3 treatment groups.
Overall benefit:risk assessment 
Anifrolumab demonstrated a clinically relevant benefit in subjects with moderate to severe 
SLE treated with SOC. The efficacy was supported by a broad range of clinical measures of 
global (various levels of SRI responses, BICLA) and organ specific disease activity (CLASI, 
joint count). A clinically relevant increase in the proportion of subjects achieving 
pre-specified corticosteroid reduction in the 300 mg group was also observed compared with 
placebo, while no apparent difference was observed comparing the 1000 mg group and 
placebo. 
Anifrolumab was generally well tolerated. A dose-related increase in the number of subjects 
with uncomplicated herpes zoster infections was observed in subjects receiving anifrolumab 
compared with placebo. To date, in clinical trials of anifrolumab, hypersensitivity events or 
anaphylaxis/anaphylactoid events have not occurred more frequently in subjects who were 
treated with anifrolumab as compared to placebo, although careful monitoring for such events 
will continue.
The administration of any foreign protein may be associated with acute allergic reactions that 
may be severe, and may result in death. Acute allergic reactions may include hypotension, 
dyspnoea, cyanosis, respiratory failure, urticaria, pruritus, angioedema, hypotonia, and 
unresponsiveness. Reports of infusion-related reactions from clinical trials conducted to date 
suggest that the frequency, severity and characteristics of these reactions are similar across all 
treatment groups.
Although anifrolumab is a human monoclonal antibody, subjects can develop anti-
anifrolumab antibodies that may neutralise the activity of the drug or may be associated with 

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acute or delayed hypersensitivity reactions including anaphylaxis. Subjects will be monitored 
for clinical manifestations that may be associated with the formation of specific antibodies to 
anifrolumab generated during the study, as well as for the presence of such antibodies.
In this study, anifrolumab will be administered at a fixed IV dose of 150 mg or 300 mg Q4W 
for 52 weeks. The 300 mg dose is equivalent to the lower dose in the Phase 2 study (CD-IA-
MEDI-546-1013). Anifrolumab has been generally well tolerated to date with no dose-related 
safety signal observed with the exception of an imbalance in observed events of 
uncomplicated herpes zoster infections. 
In order to minimise the risk of treatment with anifrolumab, subjects with risk factors for 
serious infection, malignancy, or immune deficiency disorders are specifically excluded from 
participation.
Serious infections, including non-opportunistic serious infections, opportunistic infections, 
anaphylaxis, malignancy, herpes zoster, TB (including latent TB), influenza, vasculitis (non 
SLE), and major adverse cardiovascular events (MACE) (including stroke, myocardial 
infarction [MI], or cardiovascular death) are designated as AESIs in this study. 
Major adverse cardiovascular events are also designated as AESIs. An external independent 
adjudication committee will assess all deaths and cardiovascular SAEs to determine if they 
meet criteria for MACE (stroke, MI, or cardiovascular death). Specific details will be 
addressed in a cardiovascular event adjudication charter. There have been no imbalances in 
reporting rates of MACE or other non-MACE cardiovascular events observed either with 
anifrolumab or other agents sharing a similar mechanism of action compared to 
controls/placebo to date. However, since accelerated coronary artery disease and 
cerebrovascular accidents are recognised complications of SLE, the adjudication process is 
put in place to support rigorous signal detection activity across treatment arms.
Compared to the general population, subjects with SLE have a higher rate of depression and 
suicide. Therefore, subjects will be screened for suicidality and those who are at high risk at 
baseline will be excluded from participation in the study.
In order to provide an independent periodic review of safety throughout the trial, in addition to 
the ongoing, blinded review provided by the Medical Monitor, an independent Data and 
Safety Monitoring Board (DSMB) will review blinded and unblinded safety data on a regular 
basis throughout the study (see Section 6.10.1).
In conclusion, AstraZeneca believes that the available nonclinical and clinical data indicate an 
acceptable safety profile for anifrolumab. The proposed dosing regimens for Protocol 
D3461C0005 are adequately justified and the management plan for potential risks associated 
with anifrolumab is appropriate. The emerging safety profile has not identified any risks that 
would preclude continued investigation of anifrolumab. AstraZeneca believes that 
anifrolumab continues to demonstrate an overall positive benefit-risk balance to support its 
further clinical evaluation in subjects with active SLE.

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1.4
Study design 
This is a Phase 3, multicentre, multinational, randomised, double-blind, placebo-controlled 
study to evaluate the efficacy and safety of an IV treatment regimen of anifrolumab (150 mg 
or 300 mg) versus placebo in adult subjects with moderately to severely active, autoantibody-
positive SLE while receiving SOC treatment. The study will be performed in adult subjects 
aged 18 to 70 years of age.
Approximately 450 subjects receiving SOC treatment will be randomised in a 1:2:2 ratio to 
receive a fixed IV dose of 150 mg anifrolumab, 300 mg anifrolumab, or placebo Q4W for a 
total of 13 doses (Week 0 to Week 48) with the primary endpoint evaluated at the Week 52 
visit. Investigational product will be administered as an IV infusion via an infusion pump over 
a minimum of 30 minutes, Q4W. 
Subjects must be taking either 1 or any combination of the following: OCS, antimalarial, or 
immunosuppressants. Specific medication restrictions are contained in the eligibility criteria 
and Section 3.3. See Figure 2 for an outline of the study design.
Randomisation will be stratified using the following factors: 

SLEDAI-2K score at screening (<10 points versus ≥10 points)

Week 0 (Day 1) OCS dose (<10 mg/day versus ≥10 mg/day prednisone or
equivalent)

Results of the IFN test (high versus low)
This study includes:

A Screening Period: Up to 30 days

Treatment Period: A 52-week double-blind treatment period with investigational
product administration Q4W from Week 0 to Week 48 for a total of 13 doses

At Week 52, subjects will have 2 options:

If eligible, enrol into the long-term extension (LTE) study
OR

Continue in the current study for another 8 weeks to complete a 12-week safety
follow-up after the last dose of investigational product (last dose of
investigational product will be given in Week 48)
The total study duration could be up to approximately 64 weeks for subjects who do not enrol 
into the LTE study (including screening period) and up to approximately 56 weeks (including 
screening period) for those subjects who do enrol into the LTE study.
1.4.1
Steroid burst
Section 3.3.2 provides specific details on steroid burst and tapers. From Week 0 (Day 1) to 
Week 12, subjects may receive only 1 burst of corticosteroids for an increase in SLE disease 

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Edition Number 5
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activity or to control non-SLE related disease (eg, asthma or chronic obstructive pulmonary 
disease [COPD] exacerbation). Subjects receiving more than 1 burst during the first 12 weeks 
of treatment will be considered non-responders for subsequent assessments of disease activity, 
regardless of the reason for the burst (SLE or non-SLE activity). 
1.4.2
Protocol-specified steroid tapering
An important secondary objective in this study is assessing whether anifrolumab improves the 
ability to reduce corticosteroid dose in patients to <7.5 mg prednisone or equivalent per day. 
For this reason, steroid tapering to a target OCS dose of ≤7.5 mg/day must be attempted in all 
subjects with a baseline OCS dose ≥10.0 mg/day. This will commence at Week 8 and continue 
stepwise until the target dose is reached, unless at least 1 of the following criteria is met:

SLEDAI-2K activity which is worsened compared to baseline in major organ
systems (renal, CNS, cardiopulmonary, vasculitis, fever, thrombocytopenia, or
haemolytic anaemia, or gastrointestinal activity)

Newly-affected organ system(s) based on the SLEDAI-2K, excluding serological
abnormalities (dsDNA antibodies, hypocomplementemia)

Moderate to severe skin disease as reflected by a CLASI activity score of ≥10

Moderate to severe arthritis disease as reflected by an active joint count of ≥8 tender
and/or swollen joints
A recommended steroid-tapering regimen is provided in Appendix V, but Investigators will 
have flexibility in how the OCS dose is reduced at each visit. If steroid tapering is not 
attempted in an eligible subject, the Sponsor or Sponsor’s designee must be contacted 
immediately.
Investigators will not be required, but may continue, to taper OCS dose beyond the target of 
7.5 mg/day up to Week 40 based on disease activity. If a subject has an increase in disease 
activity secondary to OCS tapering, they may increase the dose up to a maximum of the 
baseline OCS therapy dose from Week 8 up to Week 40 without the subject being considered 
a non-responder for subsequent assessments of disease activity. Subjects who require OCS 
dose above their baseline level may continue in the study but will be considered 
non-responders for subsequent assessments of disease activity.
Steroid tapering will not be permitted after Week 40.

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Edition Number 5
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Figure 2
Study flow chart
IFN = interferon; IV = intravenous; N = number of subjects; OCS = oral corticosteroid; SLEDAI = Systemic Lupus Erythematosus Disease Activity Index; 
Q4W = every 4 weeks; V = Visit; W = Week

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2.
STUDY OBJECTIVES
2.1
Primary objective
Primary Objective:
Outcome Measures:
To evaluate the effect of anifrolumab 300 mg 
compared to placebo on disease activity as 
measured by the difference in the proportion 
of subjects who achieve an SLE Responder 
Index of ≥4 (SRI[4]) at Week 52
Composite endpoint SRI(4), defined by the following 
criteria:
-
Reduction from baseline of ≥4 points in the 
SLEDAI-2K and
-
No new organ system affected as defined by 1 or 
more BILAG-2004 A or 2 or more BILAG-2004 
B items compared to baseline using 
BILAG-2004 and
-
No worsening from baseline in subjects’ lupus 
disease activity defined by an increase 
≥0.30 points on a 3-point Physician’s Global 
Assessment (PGA) visual analogue scale (VAS) 
and
-
No discontinuation of investigational product or 
use of restricted medications beyond the 
protocol-allowed thresholda before assessment
a
Allowed medication is described in Section 3.3. 
2.2
Secondary objectives
Key Secondary Objectives:
Outcome Measures:
To evaluate the effect of anifrolumab 300 mg compared to placebo on:
The proportion of subjects with SRI(4) at 
Week 52 in the IFN test-high sub-group
SRI(4) (see outcome measure for primary objective)
The proportion of subjects who achieve an 
OCS dose ≤7.5 mg/day at Week 40, which is 
maintained through Week 52 in the sub-group 
of subjects with baseline OCS ≥10 mg/day
Maintained OCS reduction defined by the following 
criteria: 
-
Achieve an OCS dose of ≤7.5 mg/day 
prednisone or equivalent by Week 40 and
-
Maintain an OCS dose ≤7.5 mg/day prednisone 
or equivalent from Week 40 to Week 52 and
-
No discontinuation of investigational product or 
use of restricted medications beyond the 
protocol-allowed thresholda before assessment

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The proportion of subjects with a ≥50% 
reduction in CLASI activity score at Week 12 
in the sub-group of subjects with baseline 
CLASI activity score ≥10
50% reduction in CLASI activity score compared to 
baseline defined by the following criteria:
-
Achieve ≥50% reduction of CLASI activity
score at Week 12 compared to baseline and
-
No discontinuation of investigational product or
use of restricted medications beyond the
protocol-allowed thresholda before assessment
The proportion of subjects with SRI(4) at 
Week 24
SRI(4) (see outcome measure for primary objective)
The annualised flare rate through 52 weeks
Annualised flare rate with flare defined as either 1 or 
more new BILAG-2004 A or 2 or more new 
BILAG-2004 B items compared to the previous visit
Other Secondary Objectives:
Outcome Measures:
To evaluate the effect of anifrolumab 150 mg 
compared to placebo on disease activity as 
measured by the difference in the proportion 
of subjects who achieve SRI(4) at Week 52
SRI(4) (see endpoint for primary objective)
To assess the difference between anifrolumab 
300 mg and placebo on measures of disease 
activity including levels of SRI response other 
than 4, British Isles Lupus Assessment 
Group-based Composite Lupus Assessment 
(BICLA), the individual components of SRI, 
and the number of swollen and tender joints at 
Week 52, as well as SRI and BICLA over time
SRI(4), SRI(5), SRI(6), SRI(7), SRI(8), BICLA 
response, BILAG-2004, SLEDAI-2K, PGA, Major 
Clinical Response, Partial Clinical Response, and 
joint count
To assess the difference between anifrolumab 
300 mg and placebo on measures of organ 
damage, ie, Systemic Lupus International 
Collaborating Clinics/American College of 
Rheumatology Damage Index (SDI) at 
Week 52
SDI
To assess the difference between anifrolumab 
300 mg and placebo on subject-reported health 
status, health-related QoL, and other 
subject-reported outcome measures of fatigue, 
pain, patient global assessment, and work 
productivity at Week 52
Short Form 36 version 2 (acute recall) (SF-36v2 
[acute]), Pain numeric rating scale (NRS), Functional 
Assessment of Chronic Illness Therapy-FATIGUE 
(FACIT-F), Patient Global Assessment (PtGA), 
Lupus QoL, EuroQoL 5 dimensions (EQ-5D-5L), 
Work Productivity and Activity Impairment 
(WPAI)-Lupus, and Medical Resource Use 
Questionnaire 
To evaluate the pharmacokinetics, 
immunogenicity, and pharmacodynamics of 
anifrolumab
Anifrolumab concentration and PK parameters, 
anti-drug antibodies (ADA), 21-gene type I 
interferon (IFN) gene signature, anti-dsDNA 
antibodies, C3, fourth component (C4), and total 
haemolytic (CH50) complement levels
a
Allowed medication is described in Section 3.3

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Edition Number 5
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6.
Diagnosis of paediatric or adult SLE with a diagnosis of SLE according to the ACR
1982 revised criteria (Tan et al, 1982) ≥24 weeks prior to signing the ICF
7.
Currently receiving at least 1 of the following*:
(a)
Where prednisone is the single standard of care medication (ie, the
subject is not concurrently receiving any medication listed in inclusion
criterion 7(c)), a dose of oral prednisone ≥7.5 mg/day but ≤40 mg/day
(or prednisone equivalent**) for a minimum of 8 weeks prior to Day 1.
In addition, the dose of oral prednisone or prednisone equivalent the
subject is taking must be stable for a minimum of 2 weeks prior to
randomisation
(b)
Where prednisone is not the single standard of care medication (ie, the
subject is concurrently receiving at least one medication listed in
inclusion criterion 7(c)), a dose of oral prednisone ≤40 mg/day (or
prednisone equivalent**) for a minimum of 2 weeks prior to signing of
the ICF. In addition, the dose of oral prednisone or prednisone
equivalent the subject is taking must be stable for a minimum of 2 weeks
prior to randomisation
(c)
Any of the following medications administered for a minimum of
12 weeks prior to signing the informed consent, and at a stable dose for
a minimum of 8 weeks prior to signing the informed consent
through Day 1:
(i)
Azathioprine ≤200 mg/day
(ii)
Antimalarial (eg, chloroquine, hydroxychloroquine,
quinacrine)
(iii)
Mycophenolate mofetil ≤2 g/day or mycophenolic acid
≤1.44 g/day
(iv)
Oral, subcutaneous (SC), or intramuscular methotrexate
≤25 mg/week
(v)
Mizoribine ≤150 mg/day
*If receiving oral prednisone (or equivalent) and an additional agent, the dose duration
and maximum allowable dosages for both (b) and (c) must be met
**See Appendix V for examples of prednisone equivalency
8.
Fulfils at least 4 of the 11 ACR modified 1982 classification criteria for SLE (see
Appendix D), at least 1 of which must be:

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(a)
Positive antinuclear antibody (ANA) test at screening by
immunofluorescent assay (IFA) at the central laboratory with titre
≥1:80; OR
(b)
Anti-dsDNA antibodies at screening elevated to above normal
(including indeterminate), as per the central laboratory; OR
(c)
Anti-Smith (anti-Sm) antibody at screening elevated to above normal as
per the central laboratory
9.
At Screening, Disease Activity Adjudication Group confirmation of:
(a)
SLEDAI-2K Criteria: SLEDAI-2K score ≥6 points and “Clinical”
SLEDAI-2K score ≥4 points. The “Clinical” SLEDAI-2K is the
SLEDAI-2K assessment score without the inclusion of points
attributable to any urine or laboratory results including immunologic
measures:
(i)
Includes points from the following clinical components:
arthritis, myositis, rash, alopecia, mucosal ulcers, pleurisy,
pericarditis, or vasculitis
(ii)
Excludes points attributed to a fever, an SLE headache, and
organic brain syndrome
(b)
BILAG-2004 Level Criteria: At least 1 of the following:
i)
BILAG-2004 level A disease in ≥1 organ system
ii)
BILAG-2004 level B disease in ≥2 organ systems
(c)
Physician’s Global Assessment (PGA) score ≥1.0 on a 0 to 3 VAS at
screening
10.
Negative serum β-human chorionic gonadotropin (β-hCG) test at screening (females
of childbearing potential only).
11.
Females of childbearing potential must use 2 effective methods of avoiding
pregnancy, one of which is a barrier method, from Screening until 12 weeks after
the final dose of investigational product unless the subject is surgically sterile (ie,
bilateral tubal ligation, bilateral oophorectomy, or complete hysterectomy), has a
sterile male partner, is 1 year postmenopausal, or practices abstinence. Cessation of
birth control after the 12-week follow up period should be discussed with a
responsible physician.

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Edition Number 5
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
Sustained abstinence is an acceptable practice; however, periodic 
abstinence, the rhythm method, and the withdrawal method are not 
acceptable methods of contraception.

Postmenopausal is defined as at least 1 year since last menses and the 
subject has an elevated follicle-stimulating hormone (FSH) level greater 
than the central laboratory value of post-menopausal at screening.
Effective methods of birth control include those listed in Table 1. 
Table 1
Effective methods of birth control
Barrier Methods
Intrauterine Device Methods
Hormonal Methods
Male condom (with
spermicide*)
Progesterone T 
Implants
Cap (with spermicide cream or 
jelly*) 
Copper T 
Hormone shot or injection
Diaphragm (with spermicide
cream or jelly*) 
Combined pill
Minipill
Patch
*where commercially available
12.
Nonsterilised males who are sexually active with a female partner of childbearing 
potential must use a condom (with spermicide where commercially available) from 
Day 1 until at least 12 weeks after receipt of the final dose of investigational 
product
13.
Females with an intact cervix must have documentation of a normal Pap smear with 
no documented malignancy (eg, cervical intraepithelial neoplasia grade III [CIN 
III], carcinoma in situ [CIS], or adenocarcinoma in situ [AIS]) within 2 years prior 
to randomisation (see Appendix X for guidance on abnormal Pap smear results)
*Any abnormal Pap smear result documented within 2 years prior to randomisation 
must be repeated to confirm patient eligibility
14.
Willing to forego other forms of experimental treatment during the study
15.
Meets all of the following TB criteria:
(a)
No history of active TB prior to any Screening visit
(b)
No history of latent TB prior to initial Screening visit, with the 
exception of latent TB with documented completion of appropriate 

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treatment
Note: Subjects with no history of latent TB prior to the initial Screening 
visit, but who are diagnosed with latent TB during screening, may be 
considered eligible if appropriate treatment is initiated prior to 
randomisation. Such subjects may be re-screened if necessary to allow 
for local guidelines on latent TB treatment initiation.
(c)
No signs or symptoms suggestive of active TB from medical history or
physical examination
(d)
No recent contact with a person with active TB OR if there has been
such contact, referral to a physician specialising in TB to undergo
additional evaluation prior to randomisation (documented appropriately
in source), and, if warranted, receipt of appropriate treatment for latent
TB at or before the first administration of investigational product
(e)
Must meet 1 of the following criteria:
(i)
Negative QuantiFERON-TB Gold [QFT-G] test result for
TB obtained from the study Central Laboratory within
3 months prior to randomisation OR
(ii)
Positive QFT-G test result for TB obtained during the
Screening Period from the study Central Laboratory for
which active TB has been ruled out and appropriate
treatment for latent TB has been initiated prior to the first
investigational product administration OR
(iii)
Indeterminate (confirmed on retest) QFT-G test result for
TB obtained during the Screening Period from the study
Central Laboratory with ongoing QFT-G testing for TB
according to the Study Plan
(f)
A chest radiograph with no evidence of current active infection (eg, TB)
or old active TB, malignancy, or clinically significant abnormalities
(unless due to SLE) obtained during the Screening Period or anytime
within 12 weeks prior to signing of the informed consent
16.
Day 1 “Clinical” SLEDAI-2K score ≥4 points
17.
OCS dose stable for at least 2 weeks prior to randomisation
18.
Stable SLE SOC treatment (see Section 3.3.2) at the time of randomisation

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Edition Number 5
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19.
Women of child-bearing potential must have a negative urine pregnancy test at 
randomisation (Day 1), prior to administration of investigational product
20.
In the opinion of the Investigator, must be able to comprehend the ICF and all 
protocol related assessments, such that the patient can complete all study required 
documents, procedures, and outcome measures.
3.2
Exclusion criteria
Any of the following would exclude the subject from participation in the study:
3.2.1
General exclusion criteria
1.
Any condition that, in the opinion of the Investigator, would interfere with 
evaluation of the investigational product or interpretation of subject safety or study 
results
2.
Concurrent enrolment in another clinical study with an investigational product 
3.
Individuals involved with the conduct of the study, their employees, or immediate 
family members of such individuals
4.
Lactating or pregnant females or females who intend to become pregnant anytime 
from initiation of Screening until the 12-week safety follow-up period following 
last dose of investigational product
5.
Current alcohol, drug or chemical abuse, or a history of such abuse within 1 year 
before Week 0 (Day 1)
6.
Major surgery within 8 weeks before signing the ICF or elective major surgery 
planned during the study period (see Appendix W)
7.
Spontaneous or induced abortion, still or live birth, or pregnancy ≤4 weeks prior to 
signing the ICF
8.
At Screening (within 4 weeks before Week 0 [Day 1]), any of the following:
(a)
Aspartate aminotransferase (AST) >2.0 × upper limit of normal (ULN). 
(b)
Alanine aminotransferase (ALT) >2.0 × ULN. 
(c)
Total bilirubin >ULN (unless due to Gilbert's syndrome)
(d)
Serum creatinine >2.0 mg/dL (or >181 μmol/L)
(e)
Urine protein/creatinine ratio >2.0 mg/mg (or >226.30 mg/mmol)

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Edition Number 5
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(f)
Neutrophil count <1000/μL (or <1.0 × 109/L)
(g)
Platelet count <25000/μL (or <25 × 109/L)
(h)
Haemoglobin <8 g/dL (or <80 g/L), or <7 g/dL (or <70 g/L) if related to
subject's SLE such as in active haemolytic anaemia
(i)
Glycosylated haemoglobin (HbA1c) >8% (or >0.08) at screening
(diabetic subjects only)
Note: Abnormal screening laboratory tests may be repeated ONCE on a separate sample 
before subject is declared a screen failure.
3.2.2
Exclusion criteria related to concomitant medications
9.
Receipt of any of the following:
(a)
Where prednisone is the single standard of care medication (ie, the
subject is not concurrently receiving any medication listed in inclusion
criterion 7(c)), any addition of a new oral prednisone therapy (or
equivalent) any time in the 8 weeks prior to Day 1, OR any change in/
discontinuation of current oral prednisone dose (or equivalent) anytime
within the 2 weeks prior to randomisation (see Appendix V for examples
of prednisone equivalency)
(b)
Where prednisone is not the single standard of care medication (ie, the
subject is concurrently receiving at least one medication listed in
inclusion criterion 7(c)):
(i)
Any addition of a new oral prednisone therapy (or
equivalent) any time from 2 weeks prior to signing of the
informed consent form through Day 1, OR any change in/
discontinuation of current oral prednisone dose (or
equivalent) anytime within the 2 weeks prior to
randomisation (see Appendix V for examples of prednisone
equivalency)
(ii)
Any addition of a new dose of any of the following anytime
in the 12 weeks prior to signing of the informed consent
through Day 1, or change in/ discontinuation of current dose
anytime in the 8 weeks prior to signing of the informed
consent through Day 1: azathioprine; any antimalarial (eg,
chloroquine, hydroxychloroquine, quinacrine);
mycophenolate mofetil/mycophenolic acid; oral, SC, or
intramuscular methotrexate; mizoribine
10.
Receipt of any of the following:

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Edition Number 5
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(a)
Azathioprine >200 mg/day
(b)
Mycophenolate mofetil >2 g/day or mycophenolic acid >1.44 g/day
(c)
Oral, SC, or intramuscular methotrexate >25 mg/week
(d)
Mizoribine >150 mg/day
(e)
Any change in route of administration of oral, SC, or intramuscular
methotrexate anytime within the 8 weeks prior to signing of the
informed consent through Day 1
11.
Receipt of any investigational product (small molecule or biologic agent) within
4 weeks or 5 half-lives prior to signing of the ICF, whichever is greater (see
Appendix U)
12.
Prior receipt of anifrolumab
13.
Receipt of any commercially available biologic agent within 5 half-lives (see
Appendix U) prior to signing of the ICF
14.
Receipt of B cell-depleting therapy (including but not limited to, ocrelizumab,
ofatumumab, atacicept, obinutuzumab, or rituximab)

<26 weeks prior to signing the ICF; <40 weeks for atacicept
(see Appendix U)

or if therapy was administered ≥26 weeks ago (40 weeks for atacicept),
absolute B cell less than the lower limit of normal or baseline value prior to
receipt of B cell-depleting therapy (whichever is lower)
15.
Receipt of epratuzumab or tabalumab <26 weeks prior to signing the ICF, or
belimumab <12 weeks prior to signing the ICF
16.
A known history of allergy or reaction to any component of the investigational
product formulation or history of anaphylaxis to any human gamma globulin
therapy
17.
Regular use of >1 NSAID within 2 weeks prior to Week 0 (Day 1); OR receipt of
fluctuating doses of a NSAID within 2 weeks prior to Week 0 (Day 1)
18.
Receipt of any of the following:
(a)
Intra-articular, intramuscular or IV glucocorticosteroids within 6 weeks
prior to Day 1
(b)
Any live or attenuated vaccine within 8 weeks prior to signing the ICF

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(administration of killed vaccines is acceptable, the Sponsor 
recommends Investigators ensure all subjects are up to date on required 
vaccinations, including influenza [inactivated/recombinant] vaccine 
prior to study entry)
(c)
Bacillus Calmette-Guerin (BCG) vaccine within 1 year of signing the
ICF
(d)
Any restricted medication listed in Appendix U if the washout period is
not met
(e)
Blood transfusion within 4 weeks prior to signing the ICF
3.2.3
Exclusion criteria related to systemic lupus erythematosus and other diseases
19.
History of, or current diagnosis of, a clinically significant non SLE-related
vasculitis syndrome (see Appendix T). Vasculitis due to SLE is allowed in the study
20.
History or evidence of suicidal ideation (severity of 4 [active: method and intent,
but no plan] or 5 [active: method, intent, and plan]) within the past 6 months; or any
suicidal behaviour within the past 12 months based on an assessment with the
C-SSRS at screening or at baseline
21.
Active severe or unstable neuropsychiatric SLE including, but not limited to:
aseptic meningitis; cerebral vasculitis; myelopathy; demyelination syndromes
(ascending, transverse, acute inflammatory demyelinating polyradiculopathy); acute
confusional state; impaired level of consciousness; psychosis; acute stroke or stroke
syndrome; cranial neuropathy; status epilepticus; cerebellar ataxia; and
mononeuritis multiplex:
(a)
That would make the subject unable to fully understand the ICF OR
(b)
Where, in the opinion of the Principal Investigator (PI), protocol
specified SOC is insufficient and utilisation of a more aggressive
therapeutic approach, such as adding IV cyclophosphamide and/or high
dose IV pulse corticosteroid therapy or other treatments not permitted in
the protocol, is indicated
22.
Active severe SLE-driven renal disease where, in the opinion of the PI, protocol
specified SOC is insufficient and utilisation of a more aggressive therapeutic
approach, such as adding IV cyclophosphamide and/or high dose IV pulse
corticosteroid therapy or other treatments not permitted in the protocol, is indicated
23.
Diagnosis (within 1 year of signing the ICF) of mixed connective tissue disease or
any history of overlap syndromes of SLE and systemic sclerosis, as noted in A or B
below:

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(a)
An overlap syndrome of SLE with myositis or rheumatoid arthritis at
screening is permitted provided the subject also meets the criteria for the
classification as SLE; or
(b)
A past history of mixed connective tissue disease, which over time has
developed into a diagnosis of SLE, is permitted provided diagnosis of
SLE has been present for at least 1 year
24.
History of or current diagnosis of catastrophic or severe anti-phospholipid
syndrome within 1 year prior to signing the ICF. Antiphospholipid syndrome
adequately controlled by anticoagulant therapy for at least 3 months is acceptable.
25.
History of, or current, inflammatory joint or skin disease other than SLE that, in the
opinion of the Investigator, could interfere with the inflammatory arthritis or skin
assessments and confound the disease activity assessments
26.
History of any non-SLE disease that has required treatment with oral or parenteral
corticosteroids for more than a total of 2 weeks within the last 24 weeks prior to
signing the ICF
3.2.4
Exclusion criteria related to infection and malignancy risk factors
27.
Known history of a primary immunodeficiency, splenectomy, or any underlying
condition that predisposes the subject to infection, or a positive result for human
immunodeficiency virus (HIV) infection confirmed by central laboratory at
screening. Subjects refusing HIV testing during the screening period will not be
eligible for study participation
28.
Confirmed positive test for hepatitis B serology for:
(a)
Hepatitis B surface antigen (HBsAg), OR
(b)
Hepatitis B core antibody (HBcAb) AND hepatitis B virus (HBV) DNA
detected above the lower limit of quantitation (LLOQ) by reflex testing
by the central laboratory at screening
Note: Subjects who are HBcAb positive at screening will be tested every 3 months for HBV 
DNA. To remain eligible for the study, the subject’s HBV DNA levels must remain below the 
LLOQ as per the central laboratory.
29.
Positive test for hepatitis C antibody as confirmed by central laboratory
30.
Any severe herpes infection at any time prior to Week 0 (Day 1), including, but not
limited to, disseminated herpes (ever), herpes encephalitis (ever), recurrent herpes
zoster (defined as 2 episodes within 2 years) or ophthalmic herpes (ever)

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31.
Any herpes zoster, cytomegalovirus (CMV) or Epstein-Barr virus infection that has
not completely resolved within 12 weeks prior to signing the ICF
32.
Opportunistic infection requiring hospitalisation or intravenous antimicrobial
treatment within 3 years of randomisation
33.
Any of the following:
(a)
Clinically significant chronic infection (ie, osteomyelitis, bronchiectasis,
etc) within 8 weeks prior to signing the ICF (chronic nail infections are
allowed)
(b)
Any infection requiring hospitalisation or treatment with IV
anti-infectives not completed at least 4 weeks prior to signing the ICF
34.
Any infection requiring oral anti-infectives (including antivirals) within 2 weeks
prior to Day 1
35.
History of cancer, apart from:
(a)
Squamous or basal cell carcinoma of the skin treated with documented
success of curative therapy ≥3 months prior to Week 0 (Day 1)
(b)
Cervical cancer in situ treated with apparent success with curative
therapy ≥1 year prior to Week 0 (Day 1)
3.3
Restrictions and concomitant medications
3.3.1
Excluded medications: Day 1 through the end of the study
Subjects must be instructed not to take any medications, including over-the-counter products, 
without first consulting the Investigator.
3.3.1.1
Medications that lead to immediate discontinuation of investigational product
(a)
Cyclophosphamide
(b)
IFN therapy (alpha 2a and 2b, beta 1a and 1b, and pegylated IFNs alpha 2a and 2b)
(c)
Investigational agents
(d)
Biologic immunomodulators (including, but not limited to, belimumab, abatacept,
or rituxumab)
(e)
Live or attenuated vaccines (the Sponsor recommends that Investigators ensure all
subjects are up to date with required vaccinations prior to entry into the study)
(f)
Plasmapheresis

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(g)
BCG vaccine
(h)
Any immunoglobulin (Ig) therapy
(i)
Intravenous corticosteroids >1 gm methylprednisolone or equivalent
(j)
Any medications listed in Appendix U (please see the sulfasalazine, danazol, and
dapsone restrictions in Section 3.3.1.2), except restrictions below.
3.3.1.2
Restricted medications 
As anifrolumab is an investigative immunomodulatory agent, non-protocol permitted changes 
to immune modifiers or immunosuppressants on study are strongly discouraged.
If a subject receives 1 of the following, the Investigator must notify the
 Medical Monitor 
immediately. The
 Medical Monitor will determine with the Sponsor if the subject may 
continue to receive investigational product, however, the subject would be considered a 
non-responder.
(a)
Sulfasalazine
(b)
Danazol
(c)
Dapsone
(d)
Azathioprine >200 mg/day or at a daily dose greater than that at Week 0 (Day 1)
(e)
Mycophenolate mofetil >2.0 g/day or mycophenolic acid >1.44 g/day or at a daily
dose greater than that at Week 0 (Day 1)
(f)
Oral, SC, or intramuscular methotrexate >25 mg/week or at a daily dose greater
than that at Week 0 (Day 1)
(g)
Mizoribine >150 mg/day or at a daily dose greater than that at Week 0 (Day 1)
(h)
Any change in route of administration of oral, SC, or intramuscular methotrexate
(i)
Intravenous corticosteroids >40 mg/day but ≤1 gm/day methylprednisolone or
equivalent
(j)
Intramuscular corticosteroids >80 mg/day methylprednisolone or equivalent
(k)
Subcutaneous or intramuscular corticosteroid precursors
(l)
Treatment with OCS >40 mg/day prednisone or equivalent
(m)
Treatment with OCS above Day 1 dose for a dosing period >14 days

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(n)
Corticosteroids with a long biologic half-life (eg, dexamethasone, betamethasone)
(o)
Other immunosuppressants including but not limited to calcineurin inhibitors (eg,
cyclosporine, tacrolimus [including topical]) or leflunomide.
Note: Cyclosporine eye drops are acceptable for use in the study.
3.3.1.3
Other concomitant medications
Medication other than that described above, which is considered necessary for the subject’s 
safety and wellbeing, may be given at the discretion of the Investigator and recorded in the 
appropriate sections of the Case Report form (CRF).
3.3.2
Concomitant medications for Systemic Lupus Erythematosus standard of care 
during the study
Permitted medications for SOC SLE are described below. Concomitant medications should 
only be administered after all visit assessments, including investigational product 
administration and post-infusion PK blood draws (if applicable), with the exception of a 
subject with a previous infusion-related reaction who is to receive acetaminophen or 
equivalent. The acetaminophen or equivalent should be given after all visit assessments other 
than the infusion have been completed, and prior to starting the infusion.
Permitted SOC SLE
Limitations of Use
OCS
-
Oral prednisone or equivalent up to ≤40 mg/day is permitted
from at least 2 weeks prior to signing the informed consent.
The dose of oral prednisone must remain stable at least 2 weeks
prior to randomisation
-
Where prednisone is the single standard of care medication (ie,
the subject is not concurrently receiving any medication listed in
inclusion criterion 7(c)), a dose of oral prednisone ≥7.5 mg/day
but ≤40 mg/day (or prednisone equivalent) for a minimum of 8
weeks prior to Day 1 is required
-
Subjects with increased SLE disease activity may receive 1
permitted burst and taper of OCS between Day 1 and Week 12.
Additional details on burst and taper for SLE and non-SLE (eg,
asthma or COPD exacerbation) disease activity are provided in
Sections 3.3.2.1 to 3.3.2.4
Intramuscular corticosteroids
-
Subjects with increased SLE disease activity may receive 1
intramuscular injection of corticosteroids (methylprednisolone
≤80 mg or equivalent) instead of a burst and taper of OCS
described above between Day 1 and Week 12.
-
May only be administered after all assessments and
investigational product infusion have been completed at the visit
-
Additional details on burst and taper for SLE and non SLE
disease activity are provided in Sections 3.3.2.1 to 3.3.2.4

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Permitted SOC SLE
Limitations of Use
Intra-articular/tendon 
sheath/bursal corticosteroid 
injections
-
Intra-articular/tendon sheath/bursal injection should be 
minimized. Subjects may receive a maximum of 2 injections (for 
a total dose of ≤80 mg methylprednisolone or equivalent) instead 
of a burst and taper of OCS described above, between Day 1 and 
Week 12.
-
An intra-articular/tendon sheath/bursal injection may be allowed 
for non-SLE related disorders up to Week 40 if the symptoms of 
the disorder do not interfere with the ability to assess 
SLE-related endpoints. The Investigator must contact the 
medical monitor for permission to administer an 
intra-articular/tendon sheath/bursal corticosteroid injection prior 
to administration of corticosteroids for non-SLE related 
disorders
-
If permission is given, the injection should not be administered 
until after the completion of all assessments, including 
investigational product administration and post-infusion PK 
blood draw (if applicable) 
Antimalarials and 
immunosuppressants 
(azathioprine, methotrexate, 
and mycophenolate 
mofetil/mycophenolic acid, 
and mizoribine)
-
Antimalarials and immunosuppressants (azathioprine, 
methotrexate, mycophenolate mofetil/mycophenolic acid, and 
mizoribine) are permitted, and at least 1 is required, as part of 
SLE therapy on Day 1 if the subject is not on OCS 
-
Dose regimens must remain stable from Day 1 to the completion 
of Week 52 but may be decreased for toxicity or to optimise 
management of an AE, such as infection. The toxicity/event 
must be confirmed as a documented AE. The dose can be 
returned to the Day 1 level if the toxicity/event resolves and if 
clinically indicated.
-
Antimalarials/immunosuppressants should not be changed if a 
subject has increased SLE disease activity during the OCS 
tapering period. 
Prescription NSAIDs
-
Prescription NSAIDs must remain stable from screening through 
Week 52 but can be reduced for reasons of toxicity but not 
efficacy. Prescription NSAIDs cannot be administered with 
other NSAIDs (including over-the-counter non-steroidals) 
except for low-dose aspirin
-
On a given visit day, prescription NSAIDs should not be taken 
until after all assessments have been completed and should be 
taken according to SOC

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Permitted SOC SLE
Limitations of Use
Non-prescription NSAIDS
-
NSAIDs should not be taken on the day of a scheduled visit until 
all assessments are complete.
-
NSAIDs for analgesic purposes that never exceed 
label-approved doses of NSAIDs may be used for pain as 
required, based on Investigator judgment for up to 1 week at a 
time
-
NSAIDs cannot be used in combination with another NSAID at 
any dose, except low-dose aspirin (≤325 mg/day)
Acetaminophen or equivalent
-
Pain medications should not be used within a minimum of 6 to 
12 hours (based on known duration of effect) of a scheduled visit 
-
Normal release (not extended release) acetaminophen or 
equivalent (eg, paracetamol) may be used for pain as required
-
In a subject with a previous infusion-related reaction, 
acetaminophen or equivalent can be given after all visit 
assessments have been completed and prior to starting the 
infusion
Low-dose aspirin
-
Low-dose aspirin (maximum of 325 mg/day) for cardiovascular 
disease is permitted
Topical therapy
-
Concurrent use of topical therapy for cutaneous lupus 
erythematosus (eg, corticosteroids) is permitted. Topical 
moisturisers are also permitted
-
Topical therapy must be the same being used at signing of the 
informed consent and the dose and frequency of application 
must be stable during screening 
-
During the study, topical therapy may be reduced or 
discontinued based on clinical manifestations and Investigator 
discretion. Should cutaneous skin manifestations reoccur, the 
same topical therapy may be resumed up to the Day 1 dose.
-
It is encouraged that no new dermatologic preparations be used 
for the duration of the study. It is also recommended that 
subjects use sunscreen (list as concomitant medication for SLE) 
and avoid sun exposure during the study
NSAIDs = nonsteroidal anti-inflammatory drugs; OCS = oral corticosteroids; SLE = systemic lupus 
erythematosus; SOC = standard of care 
All permitted SOC SLE therapies received from initiation of screening through the end of the 
study will be recorded on the source document and CRF, and will include the specific 
indication for use (eg, general SLE activity, skin involvement, nephritis, pleurisy) as well as 
the dose, start and stop dates, frequency, and route of administration. In addition, any change 
in permitted SOC SLE therapy and the reason for change must be documented.

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3.3.2.1
Steroid burst and taper Week 0 (Day 1) to Week 12
In order to allow adequate time for the investigational product to achieve significant clinical 
benefit, Investigators may administer 1 burst and taper of corticosteroids between Week 0 
(Day 1) and Week 12 for increased SLE disease activity/non-SLE activity.
A steroid burst as described below is defined as 1 of the following:

OCS increase up to a maximum daily dose of 40 mg/day prednisone (or equivalent) 
for up to a total of 14 days and that must be fully administered and tapered to less 
than or equal to the Day 1 dose by the end of the 14th day. Any course of OCS 
above the Day 1 dose must not extend beyond Week 12, regardless of when the 
course was started; 
OR

Intramuscular methylprednisone (≤80 mg) or equivalent administered as a single 
dose between Day 1 and Week 12;
OR

A maximum of 2 intra-articular/tendon sheath/bursal injections (for a total 
methylprednisolone ≤80 mg or equivalent) can be given. Subjects who receive any 
intra-articular/tendon sheath/bursal injections should not receive OCS or 
intramuscular burst between Day 1 and Week 12.
Subjects who receive more than 1 steroid burst and taper from Week 0 (Day 1) to Week 12, or 
who violate any of the criteria above, may continue in the study, but will be considered 
non-responders for subsequent assessments of disease activity, regardless of whether the OCS 
burst was administered for increased SLE activity or non-SLE causes.
3.3.2.2
Increase in corticosteroids from Week 12 to Week 40
Between Week 12 and Week 40, an increase in corticosteroid dose for increased SLE activity 
is not allowed. A subject receiving a steroid dose above his or her Week 0 (Day 1) dose may 
continue in the study, but will be considered a non-responder for subsequent assessments of 
disease activity.
An increase in OCS for non-SLE causes (eg, asthma or COPD exacerbation) is allowed 
ONCE with medical monitor approval between Week 12 and Week 40. This might include a 
non-SLE OCS up to ≤20 mg/day of prednisone (or equivalent) for up to a total of 14 days and 
must be fully administered and tapered to less than or equal to the Day 1 dose by the end of 
the 14th day and by the Week 40 visit day. This will be captured as burst and taper not 
attributable to SLE. The non-SLE indication must be clearly indicated in the source 
documents.
Subjects who receive non-SLE prednisone (or equivalent) at a total dose >20 mg/day but 
≤40 mg/day for a dosing period of greater than 14 days may continue in the study but will be 
considered non-responders for subsequent assessments of disease activity. If a subject receives 

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>40 mg prednisone or equivalent) or a dose above baseline level for more than 14 days, it 
must be reported to the
 Medical Monitor. The 
 Medical Monitor will determine with 
the Sponsor if the subject may continue to receive investigational product.
3.3.2.3
Increase in oral corticosteroids after Week 40
No increase in OCS is allowed after Week 40 (except for the management of AEs or as a 
prophylaxis for adrenal insufficiency as described below). Subjects who receive an increase in 
their OCS after Week 40 will be considered non-responders for subsequent assessments of 
disease activity.
3.3.2.4
Increase in oral corticosteroids for intercurrent disease or to prevent adrenal 
insufficiency
In addition to the burst and tapers described above, subjects who are taking ≤7.5 mg/day 
prednisone or equivalent will be allowed to receive up to an additional 7.5 mg/day to a total of 
15 mg/day prednisone or equivalent for a total of up to 14 days or a single dose of IV 
hydrocortisone (≤100 mg hydrocortisone followed by half that dose for 2 days before 
returning to their usual dose) for severe illness, surgery, or symptoms of adrenal insufficiency 
or corticosteroid withdrawal if clinically warranted from Day 1 to Week 40. 
3.3.2.5
Protocol-specified steroid tapering Week 8 to Week 40
On treatment days, tapering will start after all assessments have been completed and 
investigational product has been administered. Tapering can be started on the scheduled study 
visit day (eg, Week 8 Visit) based on clinical manifestations and the laboratory values from 
the previous visit. If laboratory values of the current visit show SLE activity consistent with 
exception rule No. 1 or No. 2 below, the tapering can be reversed.
Beginning at Week 8 and continuing through Week 40, steroid tapering to an OCS dose of 
≤7.5 mg/day MUST be attempted in all subjects with OCS dose ≥10.0 mg/day at Baseline, 
unless at least 1 of the following criteria is met:

SLEDAI-2K activity which is worsened compared to baseline in major organ 
systems (renal, CNS, cardiopulmonary, vasculitis, fever, thrombocytopenia, or 
haemolytic anaemia, or gastrointestinal activity)

Newly-affected organ system(s) based on the SLEDAI-2K, excluding serological 
abnormalities (dsDNA antibodies, hypocomplementemia) 

Moderate to severe skin disease as reflected by a CLASI activity score of ≥10 

Moderate to severe arthritis disease as reflected by an active joint count of ≥8 tender 
and/or swollen joints
Steroid tapering must be started within 14 days of the visit. If steroid tapering is not attempted 
in an eligible subject, the Sponsor or Sponsor’s designee must be contacted immediately. The 
recommended steroid-tapering regimen is provided in Appendix V, but due to variability in 
subject responses to steroid treatment and tolerability of taper Investigators will have 
flexibility in how the OCS dose is reduced at each visit.

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Investigators will not be required, but may continue, to taper OCS dose beyond the target of 
7.5 mg/day up to Week 40 based on disease activity. Steroid tapering will not be permitted 
after Week 40. 
A subject experiencing an increase in disease activity secondary to OCS tapering may increase 
the dose up to a maximum of the baseline OCS therapy dose from Week 8 up to Week 40 
without the subject being considered a non-responder for subsequent assessments of disease 
activity. Subjects who require OCS dose above their baseline level may continue in the study 
but will be considered non-responders for subsequent assessments of disease activity.
3.3.3
Other restrictions
3.3.3.1
Fasting lipid profile
Subjects will be required to fast for at least 8 hours prior to assessment of lipid profile at the 
visits described in the Treatment Period Study Plan (Table 3). If the subject has not fasted, 
they should fast before the next visit, and the test can be done at that visit.
3.3.3.2
Perioperative management of investigational product
Elective surgery should be avoided during the study if clinically feasible.
Major surgery
Pre-operative management of investigational product: if a non-urgent major surgical 
procedure becomes necessary during the study, it should be scheduled at least 4 weeks after 
the last administration of investigational product, if clinically feasible. 
Non-major surgery
The decision to withhold investigational product administration is at the Investigator’s 
discretion. 
Post-operative management of investigational product: investigational product administration 
can be resumed at the Investigator’s discretion after all of the following criteria are met:

External wound healing is complete, and 

Any postoperative antibiotic course is completed, and

All acute surgical complications have resolved
3.4
Subject enrolment and randomisation
Investigator(s) should keep a record of subjects considered for, and included in the study. The 
pre-screening/screening log will be evaluated periodically during routine monitoring visits. 
The Investigator(s) will:
1.
Obtain signed informed consent from the potential subject before any study-specific 
procedures are performed. The subject is considered enrolled when the ICF is 

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signed and the enrolment call is done in the interactive voice/web response system 
(IXRS).
2.
Assign potential subject a unique enrolment number, beginning with ‘
’.
3.
Determine subject eligibility. During screening, the Disease Activity Adjudication 
Group (see Section 5.2.2) will confirm eligibility criteria based on the data captured 
in the electronic data capture (EDC) system and from the Central Laboratory. Sites 
will be notified to either randomise or screen fail the subject. 
4.
On Day 1, the Investigator will confirm that all eligibility criteria still are fulfilled 
(including that the “Clinical” SLEDAI-2K score is ≥4 points [see Inclusion 
Criterion No. 9 for “Clinical SLEDAI-2K” definition], OCS dose has been stable 
for the last 2 weeks) and will then perform the randomisation transaction in the 
IXRS.
5.
At randomisation the IXRS will assign eligible subjects a unique randomisation 
code and blinded investigational product kit number(s) to the subject.
Specific information concerning the use of the IXRS will be provided in the separate user 
manual. 
Block randomisation using an IXRS will be used to randomise subjects in a 1:2:2 ratio to 
receive a fixed IV dose of 150 mg anifrolumab, 300 mg anifrolumab, or placebo. AstraZeneca 
Biostatistics group is responsible for generating the randomisation scheme for this study using 
the GRand system. 
The randomisation will be stratified using the following factors: 

SLEDAI-2K score at screening (<10 points versus ≥10 points)

Week 0 (Day 1) OCS dose (<10 mg/day versus ≥10 mg/day prednisone or 
equivalent)

Results of the IFN test (high versus low)
Investigational product (anifrolumab or placebo) should, if possible, be administered the same 
day the investigational product kit number is assigned.
3.5
Methods for ensuring blinding
This is a double-blind study in which anifrolumab and placebo are distinguishable during the 
final preparation step of the investigational infusion bag. All packaging and labelling of 
investigational product is done in such way as to ensure blinding for all Sponsor and 
investigational site staff other than the unblinded investigational product manager. The kits on 
the shelf, and the infusion bags when prepared, look identical. Since anifrolumab and placebo 
can be distinguished at the preparation step, investigational product will be prepared by an 
unblinded investigational product manager at the site, who will not be involved in the 
management of study subjects. 

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Neither the subject nor any of the Investigator or Sponsor staff/designee who are involved in 
the treatment or clinical evaluation and monitoring of the subjects will be aware of the 
treatment received. In the event that the treatment allocation for a subject becomes known to 
the Investigator or other study staff involved in the management of study subjects, the 
Sponsor, or designee must be notified immediately by the Investigator.
3.6
Unblinding
In the event of a medical emergency, the Investigator may unblind an individual subject’s 
investigational product allocation. Instructions for unblinding an individual subject’s 
investigational product allocation are contained in the IXRS manual. The investigator should 
promptly document and explain any premature unblinding to the sponsor, without revealing 
the treatment given to patient to the sponsor. In general, unblinding should only occur if 
management of the medical emergency would be different based on the subject having 
received investigational product. In the majority of cases, the management of a medical 
emergency would be the same whether or not investigational product was received by the 
subject. If this was the case, the investigational product allocation should not be unblinded.
AstraZeneca or its designee retains the right to break the code for SAEs that are unexpected 
and are suspected to be causally related to an investigational product and that potentially 
require expedited reporting to regulatory authorities. Treatment codes will not be broken for 
the planned analyses of data until all decisions on the evaluability of the data from each 
individual subject have been made and documented.
Subjects who have been unblinded by AstraZeneca Patient Safety or designee (and who have 
not been unblinded to the Investigator or Medical Monitor) will not, based on the unblinding 
alone, be discontinued from further receipt of investigational product.
3.6.1
Unblinding for Data and Safety Monitoring Board
An independent DSMB will review safety data throughout the study. The DSMB will be 
provided with partially unblinded data (data that are summarised by treatment group using 
masked treatment group labels). The DSMB may choose to unblind the data for additional 
review as specified in the DSMB charter. The Sponsor and the study team at 
 will remain 
blinded to all data transfers provided to the DSMB. Details about the DSMB will be included 
in the DSMB Charter. For further details on the DSMB, see Section 6.10.1.
3.7
Discontinuation of investigational product
Subjects may be discontinued from investigational product in the following situations:
1.
Subject decision. The subject is at any time free to discontinue treatment, without 
prejudice to further treatment. The primary reason should be documented as 1 of the 
following:
(a)
Subject perceives the investigational product to be ineffective
(b)
Subject is unable to comply with protocol-specified visits and/or 

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procedures due to conflicts not related to clinical trial
(c)
Subject perceives logistics to be unacceptable
(d)
Subject wishes to participate in another clinical trial 
(e)
Subject wishes to take a treatment that is not allowed in this study
(f)
An AE or laboratory abnormality is of concern to the subject, but not 
clinically significant to physician
(g)
Other, please specify reason
2.
Lost to follow-up: must be documented by time and date of telephone calls, emails, 
text messages, numbers called, individuals spoken to if not subject, and at least 2 
attempts to contact the subject via certified letter
3.
AE that, in the opinion of the Investigator or the Sponsor/Sponsor’s delegate 
Medical Monitor, contraindicates further dosing with investigational product
4.
Severe non-compliance with the study protocol 
5.
The Investigator or Sponsor/Sponsor’s delegate Medical Monitor deems withdrawal 
as being in the subject's best interest
6.
Pregnancy, positive pregnancy test, or subject expresses an interest to become 
pregnant 
7.
Isolated HBc positivity with HBV DNA confirmed by the central laboratory
8.
Receipt of any medications identified in Section 3.3.1.1
9.
The use of restricted medications listed in Section 3.3.1.2 if the 
 Medical 
Monitor, in consultation with the Sponsor, determines the subject must be 
discontinued 
10.
A diagnosis of active TB, premature discontinuation of treatment for latent TB, or 
noncompliance with TB therapy. Note: duration of treatment for latent TB should 
follow the local practice. If local practice is not defined, then Centers for Disease 
Control guidance should be used.
Additional restrictions related to concomitant medications are discussed in Section 3.3.1.3.
Subjects who are permanently discontinued from further receipt of investigational product, 
regardless of the reason (withdrawal of consent, due to an AE, other), will be identified as 
having permanently discontinued treatment, and will not be eligible for the LTE study.

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3.7.1
Subject decision to discontinue investigational product 
If the subject decides to discontinue investigational product for any reason, including but not 
limited to those outlined in Section 3.7 above, the subject will not receive any further 
investigational product. The subject may also refuse to continue any further study observation. 
3.7.2
Withdrawal of the informed consent
Subjects are free to withdraw from the study at any time (investigational product and 
assessments), without prejudice to further treatment.
A subject who withdraws consent will always be asked about the reason(s) (see Section 3.7) 
and the presence of any AEs. The Investigator will follow-up AEs outside of the clinical 
study. 
If a subject withdraws from participation in the study, then his/her enrolment/randomisation 
code cannot be reused. Withdrawn subjects will not be replaced. 
3.7.3
Lost to follow-up
Subjects will be considered lost to follow-up only if no contact has been established by the 
time the study is completed such that there is insufficient information to determine the 
subject’s status at Follow-up Visit 2. A subject is considered lost to follow up when the 
following attempts to contact the subject are unsuccessful: 

Either phone calls, faxes or emails, and 

Having sent 2 registered letters/certified mail, and

One attempt to check the status of the subject using publicly available sources, if 
allowed by local regulations
“Lost to follow-up” as a reason for study discontinuation must be documented by time and 
date of telephone calls, emails, text messages, numbers called, individuals spoken to if not 
subject, and documentation that 2 certified/registered letters were sent.
3.7.4
Study completion and end of study
An individual subject will be considered to have completed the study if the subject was 
followed up until the end of the study (Week 60, or Week 52 for those enrolling in the LTE 
study), regardless of the number of doses of investigational product that were received. The 
end of the study (“study completion”) is defined as the date of the last protocol-specified 
visit/assessment for the last subject in the study.
3.7.5
Procedures for discontinuation of a subject from investigational product
Discontinuation of investigational product does not necessarily mean discontinuation of 
follow-up or termination of study participation. Compliant subjects who are discontinued from 
the investigational product should be encouraged to continue to undergo all study-related 
visits/procedures for the full treatment period (Table 3) in order to support the final efficacy 
and safety analysis for anifrolumab (see Section 8). The reason for premature discontinuation 

Revised Clinical Study Protocol
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Edition Number 5
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of investigational product will be documented in the source documents and recorded in the 
CRF.
It is essential to collect as much data as possible for all subjects throughout the study and 
especially all potential endpoint events. Complete withdrawal from the study (ie, withdrawal 
of consent) has a direct negative impact on the potential validity of all study data and should 
be avoided wherever possible. If the subject permanently discontinues investigational product 
prior to their completion of the study and wishes to continue with only selected study 
assessments; prioritized assessments are listed in Section 4.2.1.
For subjects who wish to withdraw from the study completely refer to Section 3.7.2.
3.8
Criteria for withdrawal 
3.8.1
Screen failures 
Screening failures are subjects who have provided informed consent and who subsequently do 
not fulfil the eligibility criteria for the study, and therefore must not be randomised. These 
subjects should have the reason for study withdrawal recorded as “Eligibility Criteria Not 
Fulfilled” (ie, subject does not meet the required inclusion/exclusion criteria). This reason for 
study withdrawal is only valid for screen failures (not randomised subjects). Rescreening of a 
subject will be permitted once.
3.9
Discontinuation of the study
The study may be stopped if, in the judgment of the Sponsor, trial subjects are placed at undue 
risk because of clinically significant findings that:

Meet individual stopping criteria or are otherwise considered significant (see 
Section 3.7 for reasons for discontinuation of investigational product)

Are assessed as causally related to study drug 

Are not considered to be consistent with continuation of the study
Regardless of the reason for termination, all data available for subjects at the time of 
discontinuation of follow-up must be recorded in the CRF. 
In terminating the study, the Sponsor will ensure that adequate consideration is given to the 
protection of the subjects’ interests.

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4.
STUDY PLAN AND TIMING OF PROCEDURES 
Table 2
Study plan detailing the procedures at screening
Study Period
Screening
Written informed consent /assignment of 
X
Medical history a
X
Physical examination, weight and height
X
Vital signs
X
ECG
X
Serum chemistry, haematology, and urinalysis
X
Urine protein/creatinine ratio
X
ANA, anti-dsDNA antibodies, anti-Sm antibody b
X
B cell count c
X
Chest x-ray (only in subjects who have not had a chest x-ray within 12 weeks 
prior to signing the ICF) d
X e
FSH in postmenopausal females
X
Serum pregnancy test in all females of childbearing potential
X
Blood test for TB f
X
Hepatitis B and C
X
HIV test g
X
IFN test b
X
Pap smear (only in females with an intact cervix who have not had a normal 
Pap smear within 2 years prior to randomisation)
X e
C3, C4, CH50 complement
X 
BILAG-2004 associated laboratory tests (anticardiolipin, lupus anticoagulant, 
haptoglobin, and Coombs h)
X
C-SSRS
X
BILAG-2004 
X i
CLASI
X i
Skin photography, if applicable j
X i
SLEDAI-2K 
X i
PGA
X i
Joint count
X i
TB questionnaire
X

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Study Period
Screening
Assessment of AESIs
X
Assessment of AEs/SAEs
X
ACR classification criteria
X
Concomitant medications, including SLE medications
X
Verify eligibility criteria
X
ACR = American College of Rheumatology; AE = adverse event; AESI = adverse event of special interest; ANA 
= antinuclear antibody; BILAG = British Isles Lupus Assessment Group; C3 = third component of complement; 
C4 = fourth component of complement; CH50 = total haemolytic complement; CLASI = Cutaneous Lupus 
Erythematosus Disease Area and Severity Index; C-SSRS = Columbia Suicide Severity Rating Scale; dsDNA = 
Double stranded deoxyribonucleic acid; ECG = electrocardiogram; PGA = Physician’s Global Assessment; SAE 
= serious adverse event; SLEDAI-2K = Systemic Lupus Erythematosus Disease Activity Index 2000; TB = 
tuberculosis
a
Medical History will include details for each body system contained in the BILAG-2004 assessment 
(BILAG Related History).
b
Redraw for ANA/anti-dsDNA, or IFN test can be done within the 30-day screening window, however, 
results needed to determine eligibility and stratification must be available within the 30-day screening 
window for subjects to be randomised.
c
Receipt of B cell-depleting therapy (including but not limited to, ocrelizumab, ofatumumab, atacicept,
obinutuzumab, or rituximab) <26 weeks prior to signing the ICF (<40 weeks for atacicept [see Appendix 
U]) and if therapy was administered ≥26 weeks ago (40 weeks for atacicept), absolute B cell less than the 
lower limit of normal or baseline value prior to receipt of B cell-depleting therapy (whichever is lower).
d
Anterio-posterior and lateral images are required whenever possible, or per standard of care.
e
Assessments are allowed anytime during the screening period as long as they are completed within 30 days 
after signing the informed consent form.
f
Interferon-gamma release assay (IGRAs) using QuantiFERON®-TB Gold In-Tube Test (QFT-GIT).
g
Subjects within the treatment or follow-up period at the time of amendment 4 approval will undergo HIV 
testing at the time of amendment 4 ICF signature.
h
Coombs will be performed as applicable per BILAG assessment requirements.
i
These assessments must all be completed at the same visit (SLEDAI-2K, BILAG-2004, joint count, PGA, 
CLASI, and skin photography [if applicable]).
j
Photography will be conducted at selected sites in subjects who sign an additional optional consent, and 
have a screening CLASI score of ≥10. If no baseline skin activity or photos can be captured at the patient’s 
Screening or Day 1 visit, no further photography will be done.

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Table 3
Study plan detailing the procedures during the Treatment Period (double-blind period)
Visit Number
V1 a
V2
V3
V4
V5
V6
V7
V8
V9
V10
V11
V12
V13
V14 
(EDV) b
Study Week
W0
W4
W8 
W12
W16
W20
W24
W28
W32
W36
W40
W44
W48
W52
Procedure/Visit 
Window
±7 D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
PtGA, FACIT-F, Pain 
NRS
X
X
X
X
X
X
X
X
X
X
X
X
X
X
PHQ-8
X
X
X
X
X
SF-36v2 (acute)
X
X
X
X
X
X
X
X
LupusQoL, EQ-5D-5L 
X
X
X
X
X
WPAI-Lupus
X
X
X
X
X
Medical history
X
Complete physical 
examination
X
X
X
Focused physical 
examination
X
X
X
X
X
X
X
X
X
X
X
Weight
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Assessment of 
Cushingoid features
X
X
X
ECG
X
X
Vital signs
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Serum chemistry, 
haematology, and 
urinalysis
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Pap smear
X c

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Visit Number
V1 a
V2
V3
V4
V5
V6
V7
V8
V9
V10
V11
V12
V13
V14 
(EDV) b
Study Week
W0
W4
W8 
W12
W16
W20
W24
W28
W32
W36
W40
W44
W48
W52
Procedure/Visit 
Window
±7 D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
Urine pregnancy test d
X
X
X
X
X
X
X
X
X
X
X
X
X
X
TB blood test
(QFT-GIT)
X e
X e
X e
X
HBV DNA f
X
X
X
X
Immunology profile
X
X
X
Lipid profile g
X
X
X
Cardiovascular risk 
assessment
X
X
IFN Test h
X
X
PK blood sample 
(predose)
X
X
X
X
X
X
PK blood sample 
(postdose) i
X
X
Immunogenicity blood 
sample (predose) j
X
X
X
X
X
X
Proteomics/ biomarker 
blood and urine sample
X
X
X
X
X
SLEDAI-2K associated 
laboratory tests k
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Type I IFN signature 
with 21-gene signature 
(PD marker)
X
X
X
X
X

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Edition Number 5
Date 18 May 2016
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Visit Number
V1 a
V2
V3
V4
V5
V6
V7
V8
V9
V10
V11
V12
V13
V14 
(EDV) b
Study Week
W0
W4
W8 
W12
W16
W20
W24
W28
W32
W36
W40
W44
W48
W52
Procedure/Visit 
Window
±7 D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
C-SSRS
X
X
X
X
X
X
X
X
X
X
X
X
X
X
BILAG-2004 
X
X
X
X
X
X
X
X
X
X
X
X
X
X
BILAG-2004 
associated laboratory 
tests l
X
X
X
X
X
X
X
X
X
X
X
X
X
X
CLASI
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Skin photography, if 
applicable m
X
X
X
X
X
X
X
SLEDAI-2K 
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Modified flare index
X
X
X
X
X
SDI
X
X
X
PGA
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Joint count
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Protocol-specified 
steroid tapering (if 
indicated)
X
X
X
X
X
X
X
X
X
Medical Resource Use 
Questionnaire
X
X
X
X
X
X
X
X
X
X
X
X
X
X
TB questionnaire
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Assessment of 
AEs/SAEs/AESIs
X
X
X
X
X
X
X
X
X
X
X
X
X
X

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Visit Number
V1 a
V2
V3
V4
V5
V6
V7
V8
V9
V10
V11
V12
V13
V14 
(EDV) b
Study Week
W0
W4
W8 
W12
W16
W20
W24
W28
W32
W36
W40
W44
W48
W52
Procedure/Visit 
Window
±7 D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
±7D
Concomitant 
medications
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Verify eligibility criteria
X
Randomisation
X
Investigational product 
administration n
X
X
X
X
X
X
X
X
X
X
X
X
X
AE = adverse event; BILAG = British Isles Lupus Assessment Group; CLASI = Cutaneous Lupus Erythematosus Disease Area and Severity Index; C-SSRS 
= Columbia Suicide Severity Rating Scale (C-SSRS); dsDNA = double stranded deoxyribonucleic acid; ECG = electrocardiogram; EDV = Early 
Discontinuation Visit; FACIT-F = Functional Assessment of Chronic Illness Therapy-FATIGUE; IFN = interferon; NRS = numeric rating scale; PD = 
pharmacodynamic; PGA = Physician’s Global Assessment; PHQ-8: Personal Health Questionnaire Depression Scale-8; PK = pharmacokinetic; SAE = 
serious adverse event; SDI = Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index; SLEDAI-2K = 
Systemic Lupus Erythematosus Disease Activity Index 2000; TB = tuberculosis 
a
Once screening assessments are complete, all necessary laboratory results are reported, and adjudication is complete, a subject may be randomised. 
There does not need to be 30 days between screening and Week 0 (Day 1).
b
Subjects continuing in the LTE study will have all assessments, then receive investigational product as part of the LTE protocol.
c
Subjects should have a Pap smear between Week 48 and Week 52 to ensure that there is no evidence of new cervical dysplasia. Since access to a Pap 
smear may vary by country, the Sponsor recommends that local guidelines for obtaining Pap smears in subjects who have received immunomodulators 
or immunosuppressive treatment be followed.
d
Urine pregnancy test in females of childbearing potential.
e
Only done if indeterminate at screening/previous visit using the IGRAs test that was used during screening (ie, QFT-GIT).
f
Subjects who are HBcAb positive at screening will be tested every 3 months for HBV DNA. To remain eligible for the study, the subject’s HBV DNA 
levels must remain below the LLOQ as per the central laboratory.
g
Lipid profile (cardiovascular assessment) - subjects will be required to fast for at least 8 hours prior to this assessment. If a subject has not fasted, the 
assessment should be performed under fasted conditions at the next visit.
h
Whole blood will be collected in PAXgene tubes to measure the overexpression of mRNA for certain types of type I IFN-inducible genes using a 4-gene 
test. 
i
Post-dose PK samples should be drawn 15 minutes ±5 minutes after the completion of investigational product administration.

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Edition Number 5
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j
In order to help understand the potential drug-relatedness of any hypersensitivity or anaphylaxis reaction, possible additional ADA testing (if not already 
scheduled for the visit) may be done.
k
SLEDAI-2K associated laboratory tests are C3, C4, CH50 complement, anti-dsDNA antibodies, urine protein/creatinine ratio.
l
BILAG-2004 laboratory tests to include anticardiolipin, lupus anticoagulant, haptoglobin, and Coombs (Coombs will be performed as applicable per 
BILAG assessment requirements). Note: In order to avoid having to bring the subject back for a separate phlebotomy, the anticardiolipin, lupus 
anticoagulant, and haptoglobin blood specimens will be collected at all specified visits, however the blood will be stored at the central laboratory and the 
analyses performed only if the Investigator indicates that these tests need to be completed because of clinical suspicion of haemolytic anaemia or 
antiphospholipid syndrome. Direct Coombs test samples will only be collected per the investigator's opinion and applicable BILAG assessment 
requirements for determining haemolytic anaemia.
m
Photography will be conducted at selected sites in subjects who sign an additional optional consent, and have a screening CLASI score of ≥10. If no 
baseline skin activity or photos can be captured at the patient’s Screening or Day 1 visit, no further photography will be done.
n
Investigational product will be administered as an IV infusion via an infusion pump over a minimum of 30 minutes.

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Table 4
Study plan detailing the procedures during Follow-up
Visit Number
Follow-up Visit 1 a
Follow-up Visit 2 a
Study Week
8 weeks post final dose
12 weeks post final dose
Procedure/Visit Window
EQ-5D-5L, Pain NRS,SF-36v2 (acute), FACIT-F, WPAI
X
PHQ-8
X
Physical examination, weight
X
Vital signs
X
X
Serum chemistry, haematology, and urinalysis
X
X
Urine pregnancy test in females of childbearing potential
X
X
PK blood sample
X
X
Immunogenicity blood sample
X
Proteomics/biomarkers blood and urine sample
X
TB questionnaire
X
X
Type I IFN signature with 21-gene assay (PD marker)
X
SLEDAI-2K associated laboratory tests b
X
X
BILAG-2004 associated laboratory tests c
X
X
C-SSRS
X
X
BILAG-2004 
X
X
CLASI
X
X
Skin photography, if applicable d
X
SLEDAI-2K 
X
X
PGA
X
X

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Visit Number
Follow-up Visit 1 a
Follow-up Visit 2 a
Study Week
8 weeks post final dose
12 weeks post final dose
Procedure/Visit Window
Joint count
X
X
Medical Resource Use Questionnaire
X
X
Assessment of AESIs
X
X
Assessment of AEs/SAEs
X
X
Concomitant medications
X
X
AE = adverse event; AESI = Adverse Event of Special Interest; BILAG = British Isles Lupus Assessment Group; CLASI = Cutaneous Lupus Erythematosus 
Disease Area and Severity Index; EQ-5D-5L = EuroQoL 5 dimensions; FACIT-F = Functional Assessment of Chronic Illness Therapy-FATIGUE; IFN 
= interferon; NRS = numeric rating scale; PD = pharmacodynamic; PGA = Physician’s Global Assessment; PHQ-8 = Personal Health Questionnaire 
Depression Scale-8; PK = pharmacokinetic; SAE = serious adverse event; SF-36v2 (acute) = Short Form 36 version 2 (acute recall); SLEDAI-2K = 
Systemic Lupus Erythematosus Disease Activity Index 2000; TB = tuberculosis; VAS = visual analogue scale; WPAI = Work productivity and Activity 
Impairment 
a
Follow-up assessments are to be completed when subjects complete the study (eg, early termination or after the treatment period) and are not going to 
participate in the LTE study. 
b
SLEDAI-2K associated laboratory tests are C3, C4, CH50 complement, anti-ds DNA, urine protein/creatinine ratio. If central laboratory results are not 
available for SLEDAI-2K associated samples drawn on the date of visit, labs should be redrawn one time within 14 days of the SLEDAI assessment 
date.
c
BILAG-2004 laboratory tests to include anticardiolipin, lupus anticoagulant, haptoglobin, and Coombs (Coombs will be performed as applicable per 
BILAG assessment requirements). Note: In order to avoid having to bring the subject back for a separate phlebotomy, the anticardiolipin, lupus 
anticoagulant, and haptoglobin blood specimens will be collected at all specified visits, however the blood will be stored at the central laboratory and the 
analyses performed only if the Investigator indicates that these tests need to be completed because of clinical suspicion of haemolytic anaemia or 
antiphospholipid syndrome. Direct Coombs test samples will only be collected per the investigator's opinion and applicable BILAG assessment 
requirements for determining haemolytic anaemia.
d
Photography will be conducted at selected sites in subjects who sign an additional optional consent, and have a screening CLASI score of ≥10. If no 
baseline skin activity or photos can be captured at the patient’s Screening or Day 1 visit, no further photography will be done.

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4.1
Enrolment/Screening Period
At Screening, subjects are assessed to ensure that they meet eligibility criteria. Once the 
subject signs the informed consent, they are considered enrolled in the study. Subjects who do 
not meet these criteria must not be randomised into the study.
Screening procedures will be performed according to the Screening Study Plan (Table 2), 
from Day -30 to Day -1. 
Once screening assessments are complete, all necessary laboratory results are reported, and 
adjudication is complete, a subject may be randomised. There does not need to be 30 days 
between screening and Week 0 (Day 1).
Chest x-rays and Pap smears may be completed anytime during the screening period as long 
as all results have been reviewed by the Investigator prior to randomisation. 
If a subject does not meet eligibility criteria on the basis of a laboratory value then the 
laboratory value may be repeated once within the screening period.
4.1.1
Other considerations for screening
4.1.1.1
Oral examination
In several biological programs there have been serious infections and/or death related to 
Ludwig’s angina. Although this has not been seen in the anifrolumab program, Investigators 
should check a subject’s oral cavity and review their dental health carefully during the 
screening process. While a dental examination is not required prior to enrolment in this study, 
Investigators are cautioned to consider carefully whether subjects have active caries or a 
dental infection that might impact on subject safety prior to enrolment.
4.1.1.2
Mammography
As subjects with SLE have impaired immune response, are treated with immunosuppressants, 
and are at potential risk for malignancy, it is recommended that patients enrolled into the 
study are compliant and up to date with local recommendations for mammography or other 
screening procedures for breast cancer.
4.1.2
Re-screening subjects who screen fail
If a subject fails screening for inadequate disease activity, or other reason, which, in the 
opinion of the Investigator, may change to make the subject eligible, the subject may be 
re-screened 1 time. In this case, the subject will re-sign the informed consent document. If the 
subject fails screening twice, they may not undergo further screening for this study. Initial 
screening procedures completed within the 30 days prior to subject randomisation need not be 
repeated during the re-screen visit.

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4.2
Treatment Period
Procedures during the Treatment Period will be performed according to the Treatment Period 
Study Plan (Table 3), from Week 0 (Day 1) to Week 52. The subject-reported outcome 
assessments should be completed by the subject (unassisted by spouse, family members or 
friends) prior to all other evaluations, and prior to the infusion, as disease assessments/clinical 
evaluations may confound the results. 
Before scheduling the Week 0 (Day 1) visit, ensure notification from the Disease Activity 
Adjudication Group has been received, confirming that subject meets adjudicated eligibility 
criteria (Inclusion Criterion No. 9). The Disease Activity Adjudication Group will review all 
data necessary to characterise subject SLE in relation to the SLEDAI-2K, BILAG-2004, and 
PGA assessments (including central laboratory results).
On Day 1, ensure subject meets eligibility criteria, including Day 1 assessments according to 
the Treatment Period Study Plan (Table 3). 
Subjects confirmed to be eligible will be randomised. 
Subjects will have scheduled visits at 4-week intervals to complete protocol-specified 
assessments and investigational product administration according to the Treatment Period 
Study Plan (Table 3). 
The last dose of investigational product will be administered on Week 48. At Week 52, 
subjects will have an End of Treatment (EOT) visit. For subjects who prematurely discontinue 
investigational product and are not willing to continue to participate in the study refer to 
Section 3.7.
4.2.1
Premature discontinuation of investigational product
Subjects who discontinue investigational product will be asked to return for all regularly 
scheduled clinic visits. If the subject is unwilling to complete all regularly scheduled clinic 
visits, the subject should complete the EDV (Week 52) visit within 4 weeks of the last dose of 
investigational product, as well as Follow-up Visit 1 and Follow-up Visit 2 (8 and 12 weeks 
after the EDV visit) unless consent is withdrawn. If the subject is unwilling to continue with 
any study visits, including EDV, at a minimum, the following assessments should be 
completed: 

SLEDAI-2K and the associated laboratory tests (anti-dsDNA antibodies, C3, C4, 
CH50)

BILAG-2004 and the associated laboratory tests (anticardiolipin, lupus 
anticoagulant, haptoglobin, and Coombs [Coombs will be performed as applicable 
per BILAG assessment requirements]). Note: In order to avoid having to bring the 
subject back for a separate phlebotomy, the anticardiolipin, lupus anticoagulant, and 
haptoglobin blood specimens will be collected at all specified visits, however the 
blood will be stored at the central laboratory and the analyses performed only if the 
Investigator indicates that these tests need to be completed because of clinical 

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suspicion of haemolytic anaemia or antiphospholipid syndrome. Direct Coombs test 
samples will only be collected per the investigator's opinion and applicable BILAG 
assessment requirements for determining haemolytic anaemia.

CLASI

PGA (physician global assessment)

Skin photography, if indicated

Joint count
The following safety assessments will also be completed:

Serum chemistry, haematology, urinalysis

Urine for protein, creatinine and urine-protein-creatinine ratio

Lipid Profile defined in Section 5.3.11.1

Immunology Profile defined in Section 5.3.11.2

Vital signs

Physical examination, weight

Adverse events including AESIs

Cardiovascular risk assessment

TB questionnaire

Concomitant medications
If the subject does not agree to do this, they will be asked if they can be followed on a 
monthly basis via telephone calls. At these calls, they will be asked about AEs/SAEs, lupus 
symptoms, and lupus medications. Steroid bursts will also be captured. 
Adverse events will be followed up per Section 6.6.2.
4.3
Unscheduled Visit
There may be times a subject needs to have an unscheduled visit. The Investigator should 
determine the assessments to be completed based on the reason for the unscheduled visit and 
for subject safety. Concomitant medications and AEs should be completed whenever a subject 
has an unscheduled visit. 
If a subject presents for an unscheduled visit in lieu of a regularly scheduled visit (ie, the 
subject is seen for safety and efficacy assessments when a regularly scheduled dosing or 
follow-up visit is missed), the Investigator should complete all possible safety and efficacy 
assessments applicable to the missed visit. Unscheduled efficacy assessments should not be 
collected in between completed regular study visits. 
4.4
Follow-up Period
Procedures will be performed according to the Follow-up Period Study Plan (Table 4). 

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Subjects who complete the Week 52 visit may be eligible to participate in a LTE study. 
Subjects who complete the double-blind treatment period will have follow-up visits at 
Week 56 and Week 60, unless they enrol in the LTE study. Subjects who are withdrawn from 
the study, and do not agree to complete the 52-week study period, should complete the early 
discontinuation visit (Week 52 procedures) within 4 weeks of the last dose of investigational 
product, and be followed 8 and 12 weeks after the EDV visit by completing the Follow-up 
Visit 1 and 2 assessments (see Section 3.7).
5.
STUDY ASSESSMENTS 
5.1
Description of study procedures
A Laboratory Manual will be provided to the sites that specifies the procedures for collection, 
processing, storage, and shipment of samples, as well as laboratory contact information, 
specific to this clinical research study.
5.2
Efficacy assessments
Efficacy measurements will be made at the times indicated in the Study Plan (see Table 2 for 
assessments to be performed at Screening, Table 3 for Treatment Period, and Table 4 for 
Follow-up). Subject-reported outcome assessments should be completed by the subject, 
unassisted by spouse, family members or friends.
5.2.1
Training and certification for Systemic Lupus Erythematosus assessments
In order to maintain consistent evaluation of SLE disease activity across study sites, training 
and certification of Investigators and designated site personnel who will be completing the 
disease evaluations listed below will be conducted.

SLEDAI-2K

BILAG-2004 

PGA

CLASI

Swollen and tender joint count evaluation
The SLEDAI-2K, BILAG-2004, PGA, and CLASI must be administered by the Investigator 
or another qualified physician, unless prior sponsor approval has been obtained for any other 
clinically trained site personnel with documentation of adequate assessment experience per the 
study central review plan. The joint count evaluation can be completed by other site personnel 
who, as per Investigator discretion, are qualified to perform the assessments and have at least 
1 year of experience administering the joint count evaluation. Training will include printed 
training materials, digital video disks (DVDs) and formal presentations, as well as web-based 
training modules.

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After attending study presentations (ie, Investigator Meeting) or after completion of online 
training modules, all Investigators and designated site physicians must pass an online 
examination in order to obtain certification for all disease evaluation assessments, with the 
exception of the joint count evaluation. Investigators and designated site personnel must be 
trained and certified prior to subjects entering screening at their respective sites. All 
assessments and certifications must be renewed via the study online training website prior to 
expiration and must remain current (not expire) throughout the course of the study. If there is 
a change in site personnel over the course of the study, new Investigators or physicians must 
be certified prior to performing the SLEDAI-2K, BILAG-2004, PGA, and CLASI 
assessments.
It is expected that the Investigator will ensure all joint count assessors have adequate 
experience (minimum of 1 year) and training qualifications to perform the swollen and tender 
joint count assessment. Assessors (including any new Investigators or site personnel) must 
complete the online joint count training module and obtain certification prior to performing 
any joint assessment. 
Documentation of all training will be maintained in the site’s study file.
Over the course of the study, Investigator assessments for a given subject should be completed 
by the same trained and/or certified Investigator, designated physician, or qualified site 
personnel (as described above) whenever possible.
5.2.2
Disease Activity Adjudication Group
has a Disease Activity Adjudication Group who are medically-qualified individuals 
and/or support staff who assist in the ongoing management of this trial. The Disease Activity 
Adjudication Group will review all data necessary to characterise subject SLE in relation to 
the SLEDAI-2K, BILAG-2004, and PGA assessments (including central laboratory results); 
however, the group will remain blinded for the duration of the study. Adjudication group 
members will have access to an independent expert on SLE disease activity indices for 
unanticipated issues with regard to interpretation of these indices.
The Disease Activity Adjudication Group will be utilised to confirm eligibility during 
screening and will be utilised throughout the study to confirm SLEDAI-2K, BILAG-2004, and 
PGA scoring. The Adjudication Group will also ensure that the completion of efficacy 
assessments by Investigators is of proper quality and consistency. 
If there is inconsistency between assessments, additional clarification and training on these 
assessments will be provided through the Disease Activity Adjudication Group. 
5.2.3
Systemic Lupus Erythematosus Disease Activity Index 2000 
The SLEDAI-2K disease activity index (see Appendix E) consists of a list of organ 
manifestations, each with a definition. A certified Investigator or designated physician will 
complete the SLEDAI-2K assessment and decide whether each manifestation is “present” or 

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“absent” in the last 4 weeks. The assessment also includes the collection of blood and urine 
for assessment of the laboratory categories of the SLEDAI-2K.
The SLEDAI-2K assessment consists of 24 lupus-related items. It is a weighted instrument, in 
which descriptors are multiplied by a particular organ’s “weight”. For example, renal 
descriptors are multiplied by 4 and central nervous descriptors by 8 and these weighted organ 
manifestations are totalled into the final score. The SLEDAI-2K score range is 0 to 105 points 
with 0 indicating inactive disease. The SLEDAI-2K scores are valid, reliable, and sensitive 
clinical assessments of lupus disease activity. The SLEDAI-2K calculated using a timeframe 
of 30 days prior to a visit for clinical and laboratory values has been shown to be similar to the 
SLEDAI-2K with a 10-day window (Touma et al, 2010). A timeframe of 28 days will be used 
in this study.
The “Clinical” SLEDAI-2K score is the SLEDAI-2K assessment score without the inclusion 
of points attributable to any urine or laboratory results including immunologic measures. Its 
use may permit earlier clinical decisions to be made without waiting for immunologic 
measures (including anti-dsDNA antibodies and C3, C4, and CH50 complement levels). 
However, in any circumstance where the “Clinical” SLEDAI-2K score is used, sites must 
subsequently update the SLEDAI-2K assessment when laboratory data become available so 
that the full SLEDAI-2K score is made available to the Sponsor.
A quick Reference Guide will be provided to all study personnel, which contains detailed 
protocol-specific clarifications and extensions of SLEDAI-2K clinical parameter definitions 
and a guidance for correlating SLEDAI 2K and BILAG-2004 clinical parameters.
5.2.4
British Isles Lupus Assessment Group-2004 
The BILAG-2004 is a translational index with 9 organ systems (General, Mucocutaneous, 
Neuropsychiatric, Musculoskeletal, Cardiorespiratory, Gastrointestinal, Ophthalmic, Renal 
and Haematology) that is able to capture changing severity of clinical manifestations (see 
Appendix F). It has ordinal scales by design and does not have a global score; rather it records 
disease activity across the different organ systems at a glance by comparing the immediate 
past 4 weeks to the 4 weeks preceding them. It is based on the principle of physicians’ 
intention to treat and categorises disease activity into 5 different levels from A to E:

Grade A represents very active disease requiring immunosuppressive drugs and/or a 
prednisone dose of >20 mg/day or equivalent

Grade B represents moderate disease activity requiring a lower dose of 
corticosteroids, topical steroids, topical immunosuppressives, antimalarials, or 
NSAIDs

Grade C indicates mild stable disease

Grade D implies no disease activity but the system has previously been affected

Grade E indicates no current or previous disease activity

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Although the BILAG-2004 was developed based on the principle of intention to treat, the 
treatment has no bearing on the scoring index. Only the presence of active manifestations 
influences the scoring.
5.2.4.1
Protocol-specific clarification and extension of BILAG-2004 definitions
A quick Reference Guide will be provided to all study personnel, which contains detailed 
protocol-specific clarifications and extensions of BILAG-2004 clinical parameter definitions 
and guidance for correlating SLEDAI 2K and BILAG-2004 clinical parameters. Please refer 
to this guide when completing disease activity assessments. Important extensions of selected 
BILAG-2004 glossary definitions are included as follows:
Protocol-specific extensions of BILAG-2004 and SLEDAI-2K clinical parameter definitions:
(i)
BILAG-2004 A or B score in the musculoskeletal organ system due to active 
polyarthritis, defined as follows:

“BILAG-2004 A”: severe arthritis (BILAG-2004 #41) manifested by observed 
active synovitis in ≥2 joints with marked loss of functional range of movements 
and significant impairment of basic activities of daily living (ADL), that has 
been present on several days cumulatively over the past 4 weeks, including at 
the time of the Screening visit. Basic ADL are defined as the following 
activities which require assistance or assistive devices (at least 1 must be present 
and documented in source): ambulation, toileting, grooming including bathing, 
dressing, feeding oneself (not responsive to steroids up to 10 mg/day, 
antimalarials, NSAIDs).

“BILAG-2004 B”: moderate arthritis or tendonitis or tenosynovitis 
(BILAG-2004 #42) defined as tendonitis/tenosynovitis or active synovitis in 
≥1 joint (observed or through history) with some loss of functional range of 
movements which leads to some loss of functional range of motion as 
manifested by effects on instrumental ADLs (such as cooking, driving, using the 
telephone or computer, shopping, cleaning, etc), which has been present on 
several days over the last 4 weeks and is present at the time of the Screening 
visit.
(ii)
BILAG-2004 and SLEDAI-2K “lupus headache”: lupus headache is rare, migraine, 
tension or cluster headaches should not be recorded. Lupus headache should only be 
recorded if it is disabling, lasts at least 3 days, and does not respond to narcotics. It 
is expected that its severity would prompt formal testing (lumbar puncture, 
magnetic resonance imaging [MRI], computed tomography [CT], etc) and require 
corticosteroids and/or immunosuppressants and potentially hospitalisation for 
treatment. Lupus headache is considered a manifestation of lupus cerebritis.
5.2.5
Physician Global Assessment 
A trained and certified Investigator will complete the PGA (see Appendix G). The PGA 
represents the physician’s overall assessment of average SLE disease severity on a VAS scale 

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with 0 (no disease) to 3 (severe) disease activity over the last 4 weeks. The PGA for a given 
subject should be completed by the same physician whenever possible.
The PGA is a modification of the classic analogue scale in that it is anchored with numbers 
from 0 to 3 demarcating no, mild, moderate and severe disease. The number 3 indicates severe 
disease and is at the end of the scale. This refers to the most severe possible disease, and does 
not reflect the most severe seen in a particular subject, but the most severe disease ever seen in 
all SLE subjects. Therefore, the line made by the physician along this scale should virtually 
never get to this edge. Any disease rated greater than 2.5 is very severe. The range of 
moderate disease covers approximately 1.5 to 2.4. Mild disease falls below 1.5. The 
instrument is similar to a logarithmic scale, with greater distances or demarcations possible 
among more mild-moderate symptoms. 
When scoring the PGA, the score from the previous visit should be reviewed and the mark 
should be moved relative to the score from the previous visit. This is a global assessment, 
factoring in all aspects of the subject’s lupus disease activity. It should not reflect non-lupus 
medical conditions.
5.2.6
Oral corticosteroid reduction
Please refer to Section 3.3.2 for all information regarding steroid tapering. 
5.2.7
Systemic Lupus International Collaborating Clinics/American College of 
Rheumatology Damage Index 
The SDI has been developed to assess irreversible damage in SLE subjects independently of 
its cause (SLE activity, therapy, comorbidities) but occurring after disease onset (see 
Appendix H). Damage, ie, irreversible impairment since onset of SLE is usually defined as a 
clinical feature that has to be continuously present for at least 6 months to score. In addition 
some irreversible events such as MI or a cerebrovascular accident score as damage on their 
occurrence. Briefly, damage is defined for 12 organ systems; peripheral vascular, ocular, 
neuropsychiatric, renal, pulmonary, cardiovascular, gastrointestinal, musculoskeletal, skin, 
endocrine (diabetes), gonadal, and malignancies. Damage over time can be stable or increase, 
to a maximum of 47 points, however there should be no decrease in the number of points 
(Schwartz et al, 2009).
5.2.8
Cutaneous Lupus Erythematosus Disease Area and Severity Index 
inflammatory disease activity 
The CLASI is a validated index used for assessing the cutaneous lesions of SLE and consists 
of 2 separate scores: the first summarises the inflammatory activity of the disease; the second 
is a measure of the damage done by the disease (see Appendix I). The activity score takes into 
account erythema, scale/hypertrophy, mucous membrane lesions, recent hair loss, and non-
scarring alopecia. The damage score represents dyspigmentation, 
scarring/atrophy/panniculitis, and scarring of the scalp. Subjects are asked if their 
dyspigmentation lasted 12 months or longer, in which case the dyspigmentation score is 
doubled. Each of the above parameters is measured in 13 different anatomical locations, 

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included specifically because they are most often involved in cutaneous lupus erythematosus 
(CLE). The most severe lesion in each area is measured.
5.2.9
Skin photography
Skin photography is an optional assessment. Subjects will sign an additional consent for 
photography if they agree to participate in these assessments. Photography will be conducted 
at selected sites in subjects who sign an additional consent, and have a screening CLASI score 
of ≥10. 
Site staff will be trained to take photographs. The person who performs the CLASI will 
identify a single, active skin lesion (the target lesion) that is suitable for being photographed, 
and is considered to be the most significant inflammatory lesion due to SLE. The same target 
lesion will be photographed throughout the study at time points specified in the Study Plan 
(Table 2, Table 3, and Table 4). If no baseline skin activity or photos can be captured at the 
patient’s Screening or Day 1 visit, no further photography will be done. In addition to the 
target lesion, photograph(s) including the anatomic area (eg, arm, back, scalp) with the target 
lesion should also be taken. If feasible, photographs of other areas with active skin disease 
should also be taken to demonstrate changes in the overall burden of cutaneous disease 
activity. Additional details about photography are provided in the photography manual. 
5.2.10
Joint count
The swollen and tender joint count is based on left and right shoulder, elbow, wrist, 
metacarpophalangeal (MCP) 1, MCP2, MCP3, MCP4, MCP5, proximal interphalangeal (PIP) 
1, PIP2, PIP3, PIP4, PIP5 joints of the upper extremities and left and right knee of the lower 
extremities. Conventionally, an active joint for the SLEDAI-2K calculation is defined as a 
joint with pain and tenderness and at least 1 of the following (warmth, erythema, swelling, or 
effusion) (Merrill, 2014). However, in this study an active joint for the joint count assessment 
is defined as a joint with tenderness and swelling only. Each of 28 joints will be then be 
evaluated separately for tenderness (by palpating the joint) and swelling. Joints with intra-
articular injection within 4 weeks are not evaluable for the assessment.
The joint count assessment will include questions regarding limitation of range of movements 
and effects of joint symptoms on basic and functional ADLs.
5.3
Safety assessments
Key safety assessments are AEs, AESIs, vital signs, physical examination, safety laboratory 
tests, and ECGs. Safety assessments will be made at the times indicated in the Study Plan (see 
Table 2 for assessments to be performed at Screening, Table 3 for Treatment Period, and 
Table 4 for Follow-up). Subject-reported outcome assessments should be completed by the 
subject, unassisted by spouse, family members or friends.
5.3.1
Adverse events
Adverse events, SAEs, and AESIs are defined in Sections 6.1, 6.2, and 6.5, respectively.

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Recording of AEs is described in Section 6.6 and reporting of SAEs in Section 6.7.
5.3.2
Vital signs
Vital signs (oral temperature, blood pressure [BP], pulse rate, and respiratory rate) will be 
obtained at each visit. Specific information on vital signs surrounding the infusion is included 
in Section 7.2.4 (Subject Monitoring/Procedures During and After Infusions).
5.3.3
Physical examination
Body height will be captured at screening only. Subjects will be weighed at each study visit. 
Medically significant changes from the Screening physical examination will be recorded as 
AEs.
5.3.3.1
Complete physical examination
A complete physical examination will be performed at the visits specified in the Study Plan 
(Table 2, Table 3, and Table 4), and will include an assessment of the following: general 
appearance, head and neck, breast, respiratory, cardiovascular, abdomen, 
musculoskeletal/extremities, neurological, skin, lymph nodes, and thyroid.
5.3.3.2
Focused physical examination
The focused physical examination will include an assessment of the organ systems required to 
complete protocol-specified assessment tools (SLEDAI-2K, BILAG-2004, joint count, and 
CLASI). Additional assessments should be done as clinically indicated. Abnormal findings 
will be recorded as part of AE, SAE, AESI, or lupus activity, as appropriate. 
5.3.3.3
Pap smear
Most cases of cervical cancer appear to be related to infection with papilloma virus. Because 
of the potential for viral reactivation due to blockade of the interferon pathway, we are 
assessing cervical dysplasia in this study, although to date there has been no signal in the 
anifrolumab studies. 
Abnormal Pap smear results received anytime within the 2 years prior to randomisation must 
be repeated to ensure subject eligibility. If a Pap smear performed within 2 years prior to 
randomisation was normal with no documented malignancy (eg, CIN III, CIS, or AIS), it does 
not need to be repeated. Subjects with abnormal Pap smear results of atypical squamous cells 
of undetermined significance (ASC-US), atypical squamous cells where high-grade squamous 
intraepithelial lesion (HSIL) cannot be ruled out (ASC-H), atypical glandular cells (AGC), or 
CIN grades I and II (CIN I and II) will be allowed to enter the study; please refer to Appendix 
X for guidance.
Subjects should have a Pap smear between Week 48 and Week 52 to ensure that there is no 
evidence of new cervical dysplasia. Since access to a Pap smear may vary by country, the 
Sponsor recommends that local guidelines for obtaining Pap smears in subjects who have 
received immunomodulators or immunosuppressive treatment be followed. If a Pap smear was 
performed between Week 48 and Week 52 and was not normal but showed no evidence of 

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malignancy (eg, CIN III, CIS, or AIS), it should be repeated as per the patient’s 
gynaecologist’s recommendations. If the patient’s gynaecologist has recommended a repeat 
Pap smear be performed at a specified interval, the Pap smear should be obtained as 
recommended and the report provided in the source document.
5.3.3.4
Assessment of Cushingoid features
Subjects will be assessed for Cushingoid features at the visits specified in the Treatment 
Period Study Plan (Table 3). Features, such as moon face, buffalo hump, purple or violaceous 
striae, central obesity, hirsutism, acne, easy bruising, and fragile skin, will be captured 
separately to evaluate whether resolution of same can occur overtime with OCS reduction.
5.3.4
Assessment of cardiovascular risk
To understand the contribution of the chronic inflammatory response in SLE to dyslipidaemia 
(as a potential risk for accelerated subclinical arteriosclerotic cardiovascular disease) and the 
potential effects of anifrolumab treatment, both lipid (including LDL and HDL, triglycerides 
[see Section 5.3.11.1]) and inflammatory profiles will be obtained during the study. Various 
risk factors for atherosclerosis will be assessed as part of the subject demographics at 
screening according to the Adult Treatment Panel (ATP) III Guidelines. Current and previous 
concomitant medications received for cardiovascular indications should be collected and 
recorded.
5.3.5
Columbia Suicide Severity Rating Scale 
The C-SSRS is a unique, simple, and short method of assessing both behaviour and ideation 
that tracks all suicidal events, and provides a summary of suicidality (Posner et al, 2007). It 
assesses the lethality of attempts and other features of ideation (frequency, duration, 
controllability, reasons for ideation, and deterrents), all of which are significantly predictive of 
completed suicide (see Appendix J). 
The C-SSRS will be administered at all study visits by a trained rater. The trained rater will 
record the clinical observation on the scale, which will be used as the source document. If at 
all possible, the same individual should perform the assessment at each visit to reduce scoring 
variability. In the event the primary rater is not available, a designated back-up rater who 
meets the same qualifications may perform the C-SSRS. An Investigator physician will review 
completed C-SSRS responses on the day of assessment and document review within the 
source. 
If a subject indicates having a rating of type 4 or 5 suicidal ideation on the C-SSRS suicidal 
ideation scale at any time since the previous visit when the C-SSRS was administered or 
indicates having had any suicidal behaviour since the previous visit, the subject should be 
referred to a mental health professional immediately. If the C-SSRS is administered by a rater 
other than the Primary Investigator, it is recommended that the Primary Investigator confirms 
suicidal ideation before making a referral to mental health services; however this should not 
delay the referral. 

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5.3.6
Personal Health Questionnaire Depression Scale-8
The PHQ-8 consists of 8 of the 9 criteria on which the DSM-IV diagnosis of depressive 
disorders is based (American Psychiatric Association, 1994, see Appendix K). It assesses 
symptoms of depression over the last 2 weeks. The PHQ-8 is completed by the subject and 
scored by the Investigator at visits specified in the Treatment and Follow-up Study Plans 
(Table 3 and Table 4). In addition to the 8 questions on depression, there is also a non-scored 
question to assess how the depressive symptoms affect the subject’s level of functioning.
5.3.7
Electrocardiogram 
Digital ECGs (dECG) for all subjects at all centres will be conducted at the centre using a 
machine provided by the central ECG vendor and will be transmitted to the central ECG 
laboratory. Digital ECGs will be performed at Screening, Randomisation, and at Visit 14 
(Week 52). Digital ECGs will be performed in triplicate at Randomisation and at Visit 14 
(Week 52). Digital ECGs will be obtained after the subject has been resting in a supine 
position for at least 10 minutes. All dECGs will be documented by recording the date, time, 
heart rate, QRS duration, PR interval, RR interval, QT, and corrected QT interval. The 
corrected QT intervals will be calculated using the Fridericia formula.
The Investigator will judge the overall interpretation as normal or abnormal. If abnormal, it 
will be decided as to whether or not the abnormality is clinically significant or not clinically 
significant and the reason for the abnormality will be recorded on the eCRF, if the Investigator 
considers it clinically significant. Abnormal values shall not be recorded as AEs unless 
deemed clinically significant.
Quality assurance of the ECG waveform and subject demographics will be conducted by a 
central ECG laboratory operator at the central ECG laboratory. Electrocardiogram reports will 
be provided to the study sites once the analysis is complete. It is the Investigator’s judgment 
whether the findings/results on the central ECG laboratory report are clinically relevant or not. 
5.3.8
Tuberculosis screening and monitoring
5.3.8.1
Screening evaluation
A blood test for TB will be done at screening using the interferon-gamma release assay 
(IGRAs) test (ie, QuantiFERON® -TB Gold In-Tube Test [QFT-GIT]). Evaluation of all 
subjects by QFT-GIT test will be performed by the central clinical laboratory, and chest x-rays 
will be completed at screening. If an adequate (anterio-posterior and lateral or per local 
standard of care) chest x-ray was performed within 12 weeks prior to signing the ICF, it does 
not need to be repeated at the Screening visit. 
Compared to culture confirmed TB, overall, 87.6% of subjects have a positive QFT-GIT result 
(Cellestis, 2005). The false negative rate in this setting appears to be over 12%. Further, the 
performance of the test in the setting of immunosuppressant drugs has not been evaluated. Nor 
has it been evaluated in individuals with medical conditions other than, or in addition to, latent 
TB or tuberculosis disease. The guide also states that “Medical treatments or conditions that 

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impair immune functions can potentially reduce IFN-γ responses and prevent detection of a
specific response to the (secretory proteins) ESAT-6 and CFP-10 (the test stimulators)”.
Given the population to be enrolled in the SLE study, false negative tests are possible, so a 
chest x-ray is a relevant technique for detecting active pulmonary disease and minimising 
potential risk to study subjects. 
5.3.8.2
Tuberculosis results from screening evaluations

If the screening QFT-G test is negative and there is no known history of recent 
exposure to individuals with active TB, and chest radiograph shows no evidence of 
active TB, the subject may be randomised without prophylaxis.

If the screening QFT-G test is newly positive and chest radiograph shows no 
evidence of active TB, and the subject has no symptoms or medical history 
consistent with active TB, the subject must have a retest, and if retest is positive, the 
subject must start on prophylaxis prior to randomisation.

If the screening QFT-G test is positive at the initial Screening visit, but the subject 
is not newly positive as of the initial Screening visit, the subject must have been 
diagnosed with latent TB and must have documentation confirming completion of 
appropriate treatment. Subjects with no history of latent TB prior to the initial 
Screening visit, but who are diagnosed with latent TB during screening, may be 
considered eligible if appropriate treatment is initiated prior to randomisation. Such 
subjects may be re-screened if necessary to allow for local guidelines on latent TB 
treatment initiation.

If the screening QFT-G test is indeterminate, the test must be repeated at least 1 
time by the central laboratory as soon as possible. 

If the result remains indeterminate, the chest radiograph shows no evidence of 
active TB, there are no signs or symptoms of active TB, no recent contact with 
anyone with active TB, and there is no history of latent (unless diagnosed with 
documentation of completion of appropriate treatment) or active TB, the subject 
may be randomised and will have additional QFT-G testing performed 
according to the Study Plan (Table 2, Table 3, and Table 4). Additionally, in the 
opinion of the Investigator and after discussion with the medical monitor, an 
expert specialising in TB may be consulted prior to randomisation. 
5.3.8.3
Tuberculosis monitoring during the study
If, during the trial a subject who had an indeterminate TB result at screening is determined to 
have a:

Positive QFT-G test result, the subject should be referred to a TB specialist. If a TB 
specialist is not available, the local country guidelines should be followed for 
further diagnostic work up and anti-TB treatment regimens. If no local guidelines 
exist for immunocompromised individuals, then USA guidelines may be followed. 
This should also be reported as an AESI.

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performed at the site using a dipstick. Abnormal safety laboratory results should be repeated 
as clinically indicated, as soon as possible (preferably within 24 to 48 hours).
Additional safety samples may be collected if clinically indicated at the discretion of the 
Investigator. 
Every attempt should be made to redraw any missing safety laboratory tests, even if the 
subject has received the investigational product. 
The Investigator should make an assessment of the available results with regard to clinically 
relevant abnormalities. The laboratory results should be signed and dated and retained at the 
centre as source data for laboratory variables. For information on how AEs based on 
laboratory tests should be recorded and reported, see Section 6.6.6.
In case a subject shows an AST or ALT ≥3xULN or total bilirubin ≥2xULN please refer to 
Appendix C, ‘Actions Required in Cases of Combined Increase of Aminotransferase and Total 
Bilirubin – Hy’s Law’, for further instructions.
The following laboratory variables will be measured:
Table 5
Clinical laboratory tests
Screening
ANA, anti-dsDNA antibodies, anti-Sm antibody, anti-RNP, anti-Sjogren’s Syndrome-related antigen A 
[SSA], and anti-Sjogren’s Syndrome-related antigen B [SSB] 
HbA1c in diabetic subjects only
Peripheral blood B lymphocyte count (only for subjects who received B cell-depleting therapy prior to 
signing the ICF, including but not limited to ocrelizumab, ofatumumab, atacicept, obinutuzumab, or 
rituximab)
BILAG-2004 associated laboratory tests analysed for all subjects at screening (anticardiolipin, lupus 
anticoagulant, haptoglobin, and Coombs [Coombs will be performed as applicable per BILAG 
assessment requirements])*
Hepatitis B surface antigen
Hepatitis B core antibody (reflex DNA testing if isolated HBc positive)
Hepatitis C antibody 
HIV test**
CK 
C3, C4, CH50 complement
Urine protein/creatinine ratio
QFT-G test
Haematology
Haematology/Haemostasis (whole blood)

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WBC count with differential
RBC count
Haematocrit
Haemoglobin
Platelet count
MCV
MCHC
Serum Chemistry 
Calcium
Chloride
Potassium
Sodium
AST*
ALT*
ALP*
GGT
BUN
Creatinine
Total bilirubin* (reflexively fractionated if elevated)
Glucose
Albumin
CK 
*Note for serum chemistry: Tests for AST, ALT, ALP, and total bilirubin must be conducted concurrently and 
assessed concurrently.
Urinalysis
Colour
Appearance
Specific gravity
pH
Protein dipstick
Glucose
Ketones
Blood
Bilirubin

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Microscopy including WBC/HPF, RBC/HPF, casts
Urine creatinine and protein, urine protein/creatinine ratio
Pregnancy Test 
Serum β-hCG (at screening only)
Urine β-hCG (at every visit after screening, using a dipstick)
Serum FSH (at screening only) in postmenopausal females with menses absent for ≥1 year
Disease Evaluations
SLEDAI-2K-associated laboratory tests (C3, C4, CH50 complement, anti-ds DNA, urine 
protein/creatinine ratio)
Note: If central laboratory results are not available for SLEDAI-2K associated tests, samples should be 
redrawn one time within 14 days of the SLEDAI assessment date.
BILAG-2004 associated laboratory tests, including anticardiolipin, lupus anticoagulant, haptoglobin, 
and Coombs (as applicable). Coombs will be performed as applicable per BILAG assessment 
requirements.*
ALP = Alkaline phosphatase; ALT = alanine aminotransferase; ANA = antinuclear antibody; Anti-Sm = Anti-
Smith; AST = aspartate aminotransferase; β-hCG = β-human chorionic gonadotropin; BUN = blood urea 
nitrogen; BILAG = British Isles Lupus Assessment Group; C3 = third component of complement; C4 = fourth 
component of complement; CH50 = total haemolytic complement; CK = creatine kinase; DNA = 
Deoxyribonucleic acid; GGT = gamma glutamyl transferase; HbA1c = Glycosylated haemoglobin; HBc = 
Hepatitis B core antibody; HPF = high power field; MCHC = Mean corpuscular haemoglobin concentration; 
MCV = Mean corpuscular volume; QFT-G = QuantiFERON-TB Gold; RBC = red blood cell; SLEDAI-2K = 
Systemic Lupus Erythematosus Disease Activity Index 2000; WBC = white blood cell
*In order to avoid having to bring the subject back for a separate phlebotomy, the anticardiolipin, lupus 
anticoagulant, and haptoglobin blood specimens will be collected at all specified visits, however the blood will 
be stored at the central laboratory and the analysis performed only if the investigator indicates that these tests 
need to be completed because of clinical suspicion of haemolytic anaemia or anti phospholipid syndrome. Direct 
Coombs test samples will only be collected per the investigator's opinion and applicable BILAG assessment 
requirements for determining haemolytic anaemia.
**Subjects within the treatment or follow-up period at the time of amendment 4 approval will undergo HIV 
testing at the time of amendment 4 ICF signature.
5.3.11
Laboratory assessments for cardiovascular risk assessments
5.3.11.1
Fasting lipid profile
Subjects will have a fasting lipid profile (high density lipoprotein cholesterol, low density 
lipoprotein cholesterol, and triglycerides) completed at times indicated in the Study Plan 
(Table 2, Table 3, and Table 4). Subjects will be required to fast for at least 8 hours prior to 
this assessment (see Section 3.3.3).
5.3.11.2
Immunology profile
Subjects will have tests to determine immunology profile (ANA, anti-Sm, anti-RNP, 
anti-SSA, and anti-SSB), and quantitative immunoglobulins completed at times indicated in 
the Study Plan (Table 2, Table 3, and Table 4). 

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5.4
Clinical pharmacology assessments
Clinical pharmacology assessments will be made at the times indicated in the Study Plan 
(Table 2, Table 3, and Table 4).
5.4.1
Pharmacokinetics 
For the PK analysis it is important that the date, start and stop time for the IV infusion, and the 
sample collection time are recorded. Instructions for sample collection, processing, storage, 
and shipment can be found in the separate laboratory manual provided to the centres. Serum 
will be collected according to the Study Plan (Table 3 and Table 4). Post-dose samples should 
be collected 15 minutes ±5 minutes after completion of investigational product administration
after dosing on Week 0 (Day 1) and Week 48. Post-dose specimens should not be drawn 
through the IV line used to administer the investigational product.
Samples for determination of anifrolumab concentration in serum will be analysed by a central 
laboratory on behalf of the Sponsor, using a validated bioanalytical method. 
5.4.2
Immunogenicity
Instructions for immunogenicity (anti-drug antibodies [ADA] and neutralising antibodies 
[nAb]) sample collection, processing, storage, and shipment can be found in the separate 
laboratory manual provided to the centres.
5.4.2.1
Anti-drug antibodies 
The pre-dose serum samples to measure presence of ADA will be collected according to the 
Study Plan (Table 3 and Table 4). The presence or absence of ADA will be determined in the 
serum samples using validated bioanalytical methods. In order to help understand the potential 
drug-relatedness of any hypersensitivity or anaphylaxis reaction, possible additional ADA 
testing (if not already scheduled for a visit) may be collected and analysed.
5.4.2.2
Neutralising antibodies
Neutralising antibodies testing will only occur on samples that are ADA positive. Samples 
that are ADA negative will not be tested for nAb. The presence or absence of neutralising 
ADA will be determined using a validated bioanalytical method. 
5.4.3
Pharmacodynamics 
Type I IFN inducible signature in whole blood will be assessed by a 21-gene assay to be used 
as a PD marker to follow the biologic effect of anifrolumab on its target throughout the study. 
Whole blood will be collected for RNA isolation at the visits indicated in the Study Plan 
(Table 2, Table 3, and Table 4) in order to evaluate the mRNA expression levels of 21 type I 
IFN-inducible genes. The remaining mRNA from the PD sample may be utilised for 
additional biomarker work to further characterise the effects of anifrolumab on its target. 

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5.4.4
Interferon test in whole blood
Whole blood will be collected at screening in PAXgene tubes to measure the overexpression 
of mRNA for certain types of type I IFN-inducible genes using a 4-gene test. The IFN test and 
the data will be evaluated for development of a companion diagnostic. The IFN-4-gene testing 
will be conducted at a designated central laboratory under a separate device test site protocol 
provided by the device sponsor (QIAGEN). The QIAGEN therascreen® interferon-inducible 
gene expression (IFIGx) Rotor-Gene Q (RGQ) reverse transcriptase polymerase chain 
reaction (RT-PCR) System will be used, it comprises the following:

PAXgene™Blood RNA Tubes (sample collection)

PAXgene™Blood RNA Kit (RNA sample preparation)

Therascreen IFIGx RGQ RT-PCR Kit used with the RGQ molecular diagnostic 
Platform with bespoke IFIGx software (sample testing)
The therascreen IFIGx RGQ RT-PCR Kit will be labelled as per 21 CFR 809 .10 (c)(2)(ii), 
“For Investigational Use Only.” The performance characteristics of this product have not been 
established.
The primary intent is to prospectively identify subjects as “test-high” or “test-low” for the 
purpose of randomisation. The results of this test will be used to stratify subjects. The kit uses 
the expression of the genes IFI27, IFI44, IFI44L and RSAD2 compared with 3 reference 
genes; 18S, ACTB and GAPDH. The result is expressed as a score that is compared with a 
pre-established cut-off that classifies subjects into 2 groups with low or high levels of IFN 
inducible gene expression. The results of the test will not be used to determine eligibility and 
will not be shared with the investigative site (ie, all site personnel will remain blinded to IFN 
test results). The assay is not intended for prediction of response to anifrolumab in other 
diseases. 
5.4.5
Proteomics/biomarkers
Renal disease develops in more than half of SLE subjects. However, the onset of lupus 
nephritis is commonly insidious and thus, early diagnosis and treatment of lupus nephritis are 
difficult. Many studies have shown the presence of inflammatory proteins in the urine of lupus 
nephritis subjects and the correlation of such proteins with disease severity/activity and/or 
histological results. However, there are very few studies that have evaluated the differences in 
urine proteomics between subjects with active lupus nephritis requiring treatment and subjects 
with either minimal or inactive renal disease. Understanding how anifrolumab impacts on 
urine proteomics should expand our insights regarding the effects of anifrolumab on the 
kidney in subjects with SLE. 
Urine samples will be collected according to the time points outlined in the Study Plan (Table 
3 and Table 4). Approximately 30 to 40 mL of urine will be collected from each subject at the 
specified visits. Baseline urine samples will be used to assess differences in protein analytes 
from control healthy donor samples by a variety of technical methodologies that may include: 
immunoassays, protein arrays, and biochemical approaches. Longitudinal alterations in SLE 
dysregulated proteins will be assessed in association with clinical characteristics and/or 

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response to treatment. Additionally, the results from the proteomic analyses will be compared 
to those obtained from urine samples of lupus nephritis subjects. 
Plasma will be collected for correlative studies during visits specified in the Study Plan (Table 
3 and Table 4). These studies will include proteins, peptides and immune complexes and will 
be conducted using immunoassays, in vitro assays, and/or biochemical approaches. The data 
from these studies will be reported in separate research reports. 
5.4.6
Storage and destruction of biological samples
Samples will be stored for up to 15 years or as per local regulation from the date of the Last 
Subject’s Last Visit, after which they will be destroyed.
5.5
Quality of life/pharmacoeconomic assessments
Quality of life and pharmacoeconomic assessments will be made at the times indicated in the 
Study Plan (Table 2, Table 3, and Table 4). Subject-reported outcome assessments should be 
completed by the subject, unassisted by spouse, family members or friends.
Subjects will be completing the following subject-reported questionnaires to assess treatment 
effects.
5.5.1
Short Form 36 version 2 (acute recall) 
The SF-36-v2 (acute) is a multipurpose, 36-item survey that measures 8 domains of health: 
physical functioning, role limitations due to physical health, bodily pain, general health 
perceptions, vitality, social functioning, role limitations due to emotional problems, and 
mental health (see Appendix L). It yields scale scores for each of these 8 health domains, and 
2 summary measures of physical and mental health: the Physical Component Summary and 
Mental Component Summary.
5.5.2
Functional Assessment of Chronic Illness Therapy–FATIGUE 
The FACIT-F is a 13-item subject-completed questionnaire to assess the impact of fatigue 
over the previous 7 days (see Appendix M). The responses range from 0 (Not at All) to 4 
(Very Much). Final scores are the sum of the responses and range from 0 to 52; higher scores 
indicate better QoL (Yellen et al, 1997). Changes in scores >3 points are considered to be 
clinically meaningful (Cella et al, 2002).
5.5.3
EuroQoL 5 dimensions 
The EQ-5D-5L is comprised of the following 5 dimensions: mobility, self-care, usual 
activities, pain/discomfort and anxiety/depression (EuroQoL Group, 1990, see Appendix N). 
Each dimension has 5 response options (no problems, slight problems, moderate problems, 
severe problems and unable to/extreme problems) that reflect increasing levels of difficulty. 
EQ-5D-5L health states will be converted into a single index value using values sets from the 
EQ-5D-5L Crosswalk Project. The questionnaire also includes a VAS, where the subjects are 
asked to rate their health on a scale of 0-100, with 0 being worst imaginable health state and 
100 being best imaginable health state.

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5.5.4
Lupus Quality of Life
Lupus QoL is a 34-item SLE-specific health-related QoL measure (see Appendix O). It was 
developed in the United Kingdom for use in adults with SLE (McElhone et al, 2007) and was 
further validated in the USA (Jolly et al, 2010). The instrument consists of 8 domains 
(physical health [8 items], pain [3 items], planning [3 items], intimate relationships [2 items], 
burden to others [3 items], emotional health [6 items], body image [5 items] and fatigue
[4 items]). 
5.5.5
Patient Global Assessment 
Subjects will be asked to complete the PtGA (see Appendix P). The PtGA is a single-item 
question that takes into account all the ways in which illness and health conditions may affect 
the patient at this time. The patient should consider the previous week when answering this 
question. Responses range from very well to very poor on a 100 mm VAS. The physician and 
subject must complete the PGA and PtGA, respectively, independently of each other.
5.5.6
Work productivity and Activity Impairment 
The Work Productivity and Activity Impairment (WPAI) is a validated, self-administered 
questionnaire consisting of 6 questions, assessing the impact of disease on productivity (see 
Appendix Q). The WPAI yields 4 types of scores: absenteeism (work time missed), 
presenteeism (VAS [scored from 0 to 10] rating of impairment while working), work 
productivity loss (overall work impairment /absenteeism plus presenteeism), and activity 
impairment (VAS [scored from 0 to 10] rating of daily activities, other than work at a job) 
(Reilly et al, 1993).
5.5.7
Medical Resource Use Questionnaire
Medical resource use will be determined by completing the Medical Resource Use 
Questionnaire Edition Number 3, which collects information on: 1) the number of 
unscheduled emergency department visits; 2) unscheduled hospitalisations; 3) the length of 
stay for hospitalisations; 4) the number of intensive care unit (ICU) stays and the length of 
ICU stays; 5) unscheduled medical provider visits; and 6) the cause(s) of hospitalisation over 
duration of the study (see Appendix S). 
Site personnel will administer the questionnaire by interviewing the subject at every visit. 
Further, site personnel are required to obtain source documentation (ie, medical records) for 
these visits and make the records available to the monitor. Appropriate SAE/AE forms need to 
be completed for hospitalisation and emergency department visits.
5.5.8
Pain numerical rating scale 
Overall subject-reported pain will be captured with an 11-point NRS (0 no pain; worst 
imaginable) with a 1 week recall period (see Appendix R). 

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6.
SAFETY REPORTING AND MEDICAL MANAGEMENT
The PI is responsible for ensuring that all staff involved in the study are familiar with the 
content of this section.
6.1
Definition of adverse events
An AE is the development of an undesirable medical condition or the deterioration of a 
pre-existing medical condition following or during exposure to a pharmaceutical product, 
whether or not considered causally related to the product. An undesirable medical condition 
can be symptoms (eg, nausea, chest pain), signs (eg, tachycardia, enlarged liver) or the 
abnormal results of an investigation (eg, laboratory findings, ECG). In clinical studies, an AE 
can include an undesirable medical condition occurring at any time, including run-in or 
washout periods, even if no study treatment has been administered.
The term AE is used to include both serious and non-serious AEs.
6.2
Definition of serious adverse events
An SAE is an AE occurring during any study phase (ie, run-in, treatment, washout, 
follow-up), that fulfils 1 or more of the following criteria:

Results in death

Is immediately life-threatening

Requires in-patient hospitalisation or prolongation of existing hospitalisation 

Results in persistent or significant disability/incapacity or substantial disruption of 
the ability to conduct normal life functions

Is a congenital abnormality or birth defect

Is an important medical event that may jeopardise the subject or may require 
medical intervention to prevent 1 of the outcomes listed above.
For further guidance on the definition of a SAE, see Appendix B.
6.3
Hy’s law
Cases where a subject shows elevations in liver biochemistry may require further evaluation 
and occurrences of AST or ALT ≥3xULN together with total bilirubin ≥2xULN may need to 
be reported as SAEs. Please refer to Appendix C for further instruction on cases of increases 
in liver biochemistry and evaluation of Hy’s Law.
6.4
Other events of special interest
6.4.1
Overdose
An overdose (ie, having been administered a greater dose of study drug than specified in this 
protocol) with associated AEs is recorded as the AE diagnosis/symptoms on the relevant AE 
modules in the CRF and in the Overdose Report.

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An overdose without associated symptoms is only reported in the Overdose Report.
If an overdose of investigational product occurs during the study, then the Investigator or 
other site personnel inform the appropriate AstraZeneca representative or designee 
immediately or no later than 24 hours of when he or she becomes aware of it.
The designated AstraZeneca representative or designee works with the Investigator to ensure 
that all relevant information is provided to the 
Safety Management data entry site.
For overdoses associated with a SAE, the standard reporting timelines apply, see Section 6.7. 
For other overdoses, reporting must occur within 30 days.
6.4.2
Pregnancy
All pregnancies and outcomes of pregnancy should be reported to AstraZeneca.
6.4.3
Maternal exposure
If a subject becomes pregnant during the course of the study, investigational product should be 
discontinued immediately.
Pregnancy itself is not regarded as an AE unless there is a suspicion that the investigational 
product under study may have interfered with the effectiveness of a contraceptive medication. 
Congenital abnormalities/birth defects and spontaneous miscarriages should be reported and 
handled as SAEs. Elective abortions without complications should not be handled as AEs. The 
outcome of all pregnancies (spontaneous miscarriage, elective termination, ectopic pregnancy, 
normal birth or congenital abnormality) should be followed up and documented even if the 
subject was discontinued from the study.
If any pregnancy occurs in the course of the study, then the Investigator or other site personnel 
informs the appropriate AstraZeneca representatives within 1 day, ie, immediately but no 
later than 24 hours of when he or she becomes aware of it.
The designated AstraZeneca representative or designee works with the Investigator to ensure 
that all relevant information is provided to 
Safety Management and to AstraZeneca 
within 1 or 3 calendar days for SAEs (see Section 6.6) and within 30 days for all other 
pregnancies.
The same timelines apply when outcome information is available.
Any subject who becomes pregnant during the course of the study will be followed so that 
pregnancy outcome can be determined and reported to AstraZeneca and the regulatory 
authorities.
6.4.4
Paternal exposure 
Male subjects should refrain from fathering a child or donating sperm during the study and for 
12 weeks following the last dose. 

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Pregnancy of the subject’s partner is not considered to be an AE. However, the outcome of all 
pregnancies (spontaneous miscarriage, elective termination, ectopic pregnancy, normal birth, 
or congenital abnormality) should if possible be followed up and documented. 
The outcome of any conception occurring from the date of the first investigational product 
administration until 12 weeks after the last investigational product administration should be 
followed up and documented. Information on the pregnancy of a subject’s partner must be 
obtained directly from the subject’s partner. Therefore, prior to obtaining information about 
the pregnancy, the Investigator must obtain the consent of the subject’s partner.
6.5
Adverse Events of Special Interest 
An AESI is an AE of scientific and medical concern specific to understanding biologics and 
requires close monitoring and rapid communication by the Investigator to the 
Sponsor/Sponsor’s delegate. An AESI may be serious or nonserious. 
Adverse Events of Special Interest in this protocol will be assessed at each visit in the CRF. 
The events of interest are serious infections, including non-opportunistic serious infections, 
opportunistic infections, anaphylaxis, malignancy, herpes zoster, TB (including latent TB), 
influenza, vasculitis (non-SLE), and MACE (including stroke, MI, or cardiovascular death). 
Lupus nephritis (associated with SLE; WHO or ISN/RPS Classification Class III, IV or V) is 
defined not as an AESI but as a new BILAG-2004 A adjudicated AE.
An AESI that meets 1 of the seriousness outcomes listed in Section 6.2 will be categorised as 
an SAE for the purposes of follow-up responsibility and safety reporting. A nonserious AESI 
will be categorised as an AE. For reporting of AESIs, see Section 6.8.
6.5.1
Non-opportunistic serious infection
A serious non-opportunistic infection is any non-opportunistic infection that meets the SAE
criteria in Section 6.2. Serious non-opportunistic infection adverse events are reported as 
SAEs and AESIs. It is expected that culture results and all diagnostic or therapeutic procedure 
results performed on a subject experiencing a serious non-opportunistic infection will be 
provided as an SAE update. Non-serious non-opportunistic infections will not be captured as 
AESIs.
6.5.2
Opportunistic infection
An opportunistic infection is an invasive infection caused by microorganisms that are 
normally non-pathogenic or rarely pathogenic in individuals with normal immune function or 
cause an infection of a type or severity not seen in the normal host. 
Examples of opportunistic infections that may occur in SLE subjects include: herpes zoster
meningoencephalitis, Salmonella bacteremia, Pneumocystis jiroveci pneumonia or progressive 
multifocal leukoencephalopathy. It is expected that culture results and all diagnostic or 
therapeutic procedure results performed on a subject experiencing a serious opportunistic 
infection will be provided as an SAE update. Since anifrolumab is an immunomodulatory 

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agent and the sponsor needs to understand the safety profile of this investigational product, 
including assessment of how anifrolumab may affect resistance to different types of 
infections, investigators are asked to undertake appropriate microbiologic identification 
including culture and report culture results for all patients who develop serious infections.
6.5.3
Anaphylaxis
Anaphylaxis is a severe, potentially fatal, systemic allergic reaction that occurs suddenly after 
contact with an allergy-causing substance, such as investigational product. For the purposes of 
this study, the definition detailed in Appendix Y is provided as a simple and rapid means to 
make the diagnosis of anaphylaxis during infusion with investigational product. This 
definition was a product of a symposium convened by the National Institute of Allergy and 
Infectious Diseases and Food Allergy and Anaphylaxis Network (Sampson et al, 2006). 
6.5.4
Malignancy
Malignancy is a neoplasm characterised by cells with abnormal features, uncontrolled rapid 
growth with invasive and/or metastatic tendencies diagnosed based on pathologic and clinical 
standards. Understanding risk of developing different malignancies is critical to establishing 
the benefit: risk profile for anifrolumab. Investigators are therefore requested to obtain biopsy 
results and pertinent biomarker and/or genetic testing results performed and to report these for 
any malignancies reported during the study.
6.5.5
Herpes zoster
Herpes zoster is a viral infection characterized by a cutaneous vesicular eruption on an 
erythematous base presenting along dermatome(s) and usually associated with prodromal 
pain. Herpes zoster results from the reactivation of varicella-zoster virus; multiple 
dermatomes may be involved (>3 indicates disseminated disease) and organ or systemic 
infection may occur (invasive; therefore an opportunistic infection). Polymerase chain 
reaction testing of samples from vesicles, biopsy, or other specimens (for example, 
cerebrospinal fluid) may confirm the presence of varicella-zoster virus.
For additional information regarding Herpes zoster, refer to the Investigator Brochure. As this 
is an event of special interest, the Sponsor will collect information including whether or not 
subjects have received vaccination for Herpes zoster. The Herpes zoster vaccine will be 
captured in the appropriate sections of the CRF. 
6.5.6
Tuberculosis
Tuberculosis is a mycobacterial infectious disease generally presenting as cough with 
systemic symptoms of infection diagnosed by skin test (purified protein derivative), blood test 
(IFN-gamma release assay), radiographic imaging, body fluid and tissue sampling; 
presentation may include disseminated or latent disease. An infection may be new (at least 
conversion of a TB test to positive) or reactivation of dormant disease (new active disease in a 
previously TB test positive subject without prior evidence of active disease).

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
A bacteriologically confirmed TB case is a case where a biological specimen is 
positive by smear microscopy, culture or rapid diagnostic such as PCR or nucleic 
acid amplification test (Xpert MTB/RIF).

A clinically diagnosed TB case is a case where the subject does not fulfil the 
criteria for bacteriological confirmation, but has been diagnosed with active TB by 
a clinician or other medical practitioner who has decided to give the subject a full 
course of TB treatment. This definition includes cases diagnosed on the basis of 
x-ray abnormalities or suggestive histology and extra-pulmonary cases without 
laboratory confirmation. Clinically diagnosed cases subsequently found to be 
bacteriologically positive (before or after starting treatment) should be reclassified 
as bacteriologically confirmed.
Bacteriologically confirmed or clinically diagnosed cases of TB are also classified according 
to: anatomical site of disease; history of previous treatment; drug resistance; HIV status 
(World Health Organization, 2014). 
Latent TB is a mycobacterial infection without clinical, bacteriological findings, or radiologic 
findings consistent with active TB and a TB blood test such as an IGRA (QuantiFERON 
Gold) or purified protein derivative skin test that is positive both at the time of provisional 
diagnosis and on repeat assessment. 
Subjects identified with latent TB will be assessed by a local TB specialist to confirm the 
diagnosis and local SOC that will be used in treatment. Once latent TB is confirmed, treatment 
must be instituted immediately and no investigational product may be administered until 
treatment of latent TB has begun. Additionally, subjects with newly diagnosed latent TB must 
agree to complete a locally recommended course of treatment for latent TB in order to 
continue receiving IP.
6.5.7
Influenza
Influenza is a severe viral infection that includes the following symptoms: temperature greater 
than 100.8°F (38.2°C), and malaise, headache, or myalgia. It is often accompanied by nausea, 
vomiting, and diarrhoea, and at least 1 of the following respiratory symptoms: cough, sore 
throat, or shortness of breath.
Laboratory criteria for influenza include at least 1 of the following: isolation of influenza virus 
from a clinical specimen, detection of influenza virus nucleic acid in a clinical specimen, 
identification of influenza virus antigen by direct fluorescent antibody test in a clinical 
specimen, OR influenza-specific antibody response.
A confirmed case of influenza meets the clinical and laboratory criteria for the viral illness. 
Laboratory confirmation should be done using locally available, rapid, commercial tests 
approved by Regulatory Agencies and sampling respiratory specimens. 
Not all upper respiratory viral infections or gastrointestinal viral infections are influenza. In 
the case where a subject reports a viral infection severe enough to be considered, in the 
opinion of the Investigator, influenza, a viral test should be performed (if possible) to confirm 

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the diagnosis. If, in the opinion of the Investigator, the subject has had influenza (the specific 
viral infection), this should be reported as an AESI, whether or not a test to confirm the 
diagnosis has been performed. Less severe viral infection should be reported as an AE only.
6.5.8
Vasculitis (non-Systemic Lupus Erythematosus)
Vasculitis (non-SLE) is defined as an inflammatory disorder of blood vessels involving 
arteries and/or veins and characterized by characteristic clinical signs/symptoms and 
diagnosed by biopsy, imaging such as angiography or blood tests such as findings of 
antineutrophil cytoplasmic antibodies consistent with the diagnosis. Underlying causes should 
be identified, such as medications including study drug, infections or systemic inflammatory 
syndromes, wherever possible. See Appendix T for a list of vasculitic syndromes excluded 
from the study. 
6.5.9
Major acute cardiovascular events
As a measure of enhanced Pharmacovigilance, an independent Cardiovascular Event 
Adjudication Committee (CV-EAC) will review deaths (due to any cause) and all SAEs in the 
cardiovascular SOC for evaluation as to whether to classify as MACE events (stroke, MI, or 
cardiovascular death).
The CV-EAC will review cases of interest to determine if they meet accepted diagnostic 
criteria. Causality assessments will not be made by the CV-EAC, nor will the committee 
possess governance authority. The CV-EAC will be blinded regarding any information 
relating to the randomisation group.
6.6
Recording of adverse events
6.6.1
Time period for collection of adverse events
Adverse Events and SAEs will be collected from the time of signature of informed consent, 
throughout the treatment period and including the follow-up period until Follow-up Visit 2 
(12 weeks post final dose) or Week 52 for the subjects who enrol in the LTE study.
6.6.2
Follow-up of unresolved adverse events
Any AEs that are unresolved at the subject’s last visit in the study are followed up by the 
study staff for as long as medically indicated. The Sponsor retains the right to request 
additional information for any subject with ongoing AE(s)/SAE(s) at the end of the study, if 
judged necessary.
6.6.3
Variables 
The following variables will be collected for each AE;

AE (verbatim)

The date and time when the AE started and stopped

Maximum intensity

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
Whether the AE is serious or not

Investigator causality rating against the investigational product (yes or no)

Action taken with regard to investigational product

Outcome of AE 
In addition, the following variables will be collected for SAEs:

Onset Date (Date AE met criteria for serious AE)

Detection Date (Date Investigator became aware of serious AE)

AE is serious due to:
(a)
Death
-
Date of death
-
Autopsy performed
-
Primary/secondary cause of death
(b)
Life threatening
(c)
Inpatient hospitalisation or prolongation of existing hospitalisation

Date of hospitalisation

Date of discharge
(d)
Congenital abnormality or birth defect
(e)
Important medical event
(f)
Suspected transmission via a medicinal product of an infectious agent

Description of AE

Investigator causality assessment to concomitant medications

Investigator causality assessment to study procedures (yes or no)
It is important to distinguish between serious and severe AEs. Severity is a measure of 
intensity, whereas seriousness is defined by the criteria defined above. An AE of severe 
intensity need not necessarily be considered serious. For example, nausea that persists for 
several hours may be considered severe nausea, but not a SAE. On the other hand, a stroke 
that results in only a limited degree of disability may be considered a mild stroke but would be 
a SAE. The Investigator should provide an assessment of the severity of each AE/SAE.

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6.6.4
Causality collection
The Investigator will assess causal relationship between investigational product and each AE, 
and answer ‘yes’ or ‘no’ to the question ‘Do you consider that there is a reasonable possibility 
that the event may have been caused by the investigational product?’
For SAEs causal relationship will also be assessed for other medication and study procedures 
and additional study drug (such as OCS, azathioprine, antimalarials, mycophenolate 
mofetil/mycophenolic acid, methotrexate, and mizoribine). Note that for SAEs that could be 
associated with any study procedure the causal relationship is implied as ‘yes’.
A guide to the interpretation of the causality question is found in Appendix B.
6.6.5
Adverse events based on signs and symptoms
All AEs spontaneously reported by the subject or care provider or reported in response to the 
open question from the study personnel: ‘Have you had any health problems since the 
previous visit/you were last asked?’, or revealed by observation will be collected and recorded 
in the CRF. When collecting AEs, the recording of diagnoses is preferred (when possible) to 
recording a list of signs and symptoms. However, if a diagnosis is known and there are other 
signs or symptoms that are not generally part of the diagnosis, the diagnosis and each sign or 
symptom will be recorded separately.
6.6.6
Adverse events based on examinations and tests
The results from protocol mandated laboratory tests and vital signs will be summarised in the 
clinical study report (CSR). Deterioration as compared to baseline in protocol-mandated 
laboratory values, vital signs, ECGs, and other safety assessments should therefore only be 
reported as AEs if they fulfil any of the SAE criteria or are the reason for discontinuation of 
treatment with the investigational product.
If deterioration in a laboratory value/vital sign is associated with clinical signs and symptoms, 
the sign or symptom will be reported as an AE and the associated laboratory result/vital sign 
will be considered as additional information. Wherever possible the reporting Investigator will 
use the clinical, rather than the laboratory term (eg, anaemia versus low haemoglobin value). 
In the absence of clinical signs or symptoms, clinically relevant deteriorations in 
non-mandated parameters should be reported as AE(s).
Deterioration of a laboratory value, which is unequivocally due to disease progression, should 
not be reported as an AE.
Any new or aggravated clinically relevant abnormal medical finding at a physical examination 
as compared with the baseline assessment will be reported as an AE (or SAE, as appropriate).
6.6.7
Disease progression/worsening of systemic lupus erythematosus
Disease progression can be considered as a worsening of a subject’s condition attributable to 
SLE. It may be an increase in the activity or severity of the existing manifestations of SLE or 

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is important that Investigators submit additional information requested by AstraZeneca or 
 as soon as it becomes available.
The reference document for definition of expectedness/listedness is the IB.
6.8
Reporting of adverse events of special interest
Adverse Events of Special Interest will be assessed by the Investigator for severity, 
relationship to the investigational product, possible aetiologies, and whether the event also 
meets criteria of an SAE. All AESIs (serious or nonserious) will be recorded on the AE CRF 
(using a recognized medical term or diagnosis that accurately reflects the event).
The reporting period for AESIs is the period immediately following the time that written 
informed consent is obtained through the end of subject participation in the study. Following 
detection of an AESI (non-serious), reporting is required within 72 hours of knowledge of the 
event, and for serious AESIs the standard 24-hour timeline for reporting to the appropriate 
AstraZeneca representative or designee applies.
6.9
Management of investigational product-related toxicities 
6.9.1
Anaphylaxis, hypersensitivity, and infusion-related reactions
Infusion-related reactions have been reported with the administration of IV Ig and monoclonal 
antibodies. As with any antibody, allergic reactions to dose administration are possible. 
Therefore, appropriate drugs and medical equipment to treat acute anaphylactic reactions must 
be immediately available, and study personnel must be trained to recognise and treat 
anaphylaxis. For a definition of anaphylaxis, hypersensitivity reactions, and infusion-related 
reactions, see Appendix Y.
Subjects should not be premedicated unless they have had a prior infusion-related reaction to 
anifrolumab. However, if a prior infusion-related reaction has been documented, the 
Investigator may elect to administer prophylactically an antihistamine and/or 
acetaminophen/paracetamol for the comfort and safety of the subject prior to subsequent 
infusions. Prophylactic use of glucocorticosteroids prior to subsequent infusions is not 
permitted.
6.9.2
Infections
When an infection is reported as an SAE or AESI, cultures should be obtained and culture 
results should be reported with the event. Other specific laboratory or other investigations (eg, 
chest x-ray for pneumonia) that confirm or aid in the diagnosis or treatment should be 
obtained when indicated and results should be reported with the SAE or AESI. 
Subjects who develop a new infection while undergoing treatment with investigational 
product should receive appropriate medical therapy, as determined by local standards, and be 
monitored closely until the condition resolves. Investigational product should not be 
administered to a subject with a clinically significant, active infection as determined by the 
Investigator (see Section 3.7). For any active infection (eg, varicella zoster

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infection/chickenpox) or significant exposure to any infection (eg, varicella zoster infection in 
a naive subject, bacterial pneumonia), the Investigator should consider whether to interrupt 
investigational product administration and should notify the medical monitor. 
Similarly, if a subject presents with signs or symptoms where opportunistic infections are 
considered (eg, CNS symptoms consistent with progressive multifocal leukoencephalopathy 
or herpes encephalitis or atypical pneumonia suggesting pneumocystis jiroveci pneumonia), 
investigational product should be interrupted until the Investigator confirms the symptoms and 
signs of infection have resolved or that no active infection has developed.
If dosing is resumed after resolution of a safety concern (ie, infection or other AE) the 
investigational product must be administered within 14 days of the scheduled time of the 
missed dose. If this is not possible, dosing should be resumed at the time of the next scheduled 
dose.
6.10
Study governance and oversight
The safety of all AstraZeneca clinical studies is closely monitored on an on-going basis by 
AstraZeneca representatives in consultation with 
 Safety Management. Issues identified 
will be addressed; for instance this could involve amendments to the study protocol and letters 
to Investigators. 
6.10.1
Data and Safety Monitoring Board 
An independent DSMB will perform evaluations of safety data at specified regular intervals 
throughout the study and make recommendations to the Sponsor regarding further conduct of 
the study. The DSMB will be provided with data that are summarised by treatment group 
using masked treatment group labels (eg, A, B, and C). After reviewing the data by masked 
treatment group, the DSMB may choose to unblind the treatment groups for additional review. 
The DSMB may also ask for unblinded efficacy data, if during the performance of a 
benefit/risk assessment the Board feels there is a potential safety issue or concern. The DSMB 
will not routinely review efficacy data (blinded or unblinded). 
At any time during the study, as well as on an ad hoc basis, the DSMB will also review any 
safety data assessed by the medical monitor as medically relevant. Additional information, 
including frequency of DSMB review, can be found in the DSMB charter.
If any event(s) occur that, in the opinion of the DSMB, contraindicates further dosing of 
additional subjects, the Sponsor will conduct a prompt cumulative review of safety data and 
the circumstances of the event in question to determine whether dosing and study 
randomisation should be stopped, whether the protocol will be modified, or whether the study 
will be discontinued permanently. Review by the DSMB and Sponsor decision to resume 
(with or without modifications) is required for resumption of the study in the event the study 
is interrupted. Where applicable, the regulatory authorities and Institutional Review 
Board/Independent Ethics Committee (IRBs/IECs) will be notified of any actions taken with 
the study.

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7.
INVESTIGATIONAL PRODUCT AND OTHER TREATMENTS
7.1
Identity of investigational products
Investigational product
Dosage form and strength 
Manufacturer
Anifrolumab (MEDI-546)
150 mg/mL solution of 
anifrolumab (clear colourless to 
slightly yellow) intended for IV 
administration following 
dilution into 0.9% saline
MedImmune, LLC
Placebo
Solution (clear) intended for IV 
administration following 
dilution into 0.9% saline
MedImmune, LLC
Excipients include 25 mM histidine/histidine-HCl, 50 mM lysine-HC1, 130 mM trehalose 
dihydrate, 0.05% (w/v) plant-derived polysorbate 80, pH 5.9.
Each vial of investigational product or placebo contains 1.3 mL fill volume. Investigational 
product and placebo will be supplied to the site in cartons of 2 vials per kit. Each kit will have 
a unique number that will be printed on all labels within the kit (ie, the outer carton label and 
the label of each vial within the carton).
Preparation of investigational product and placebo must be performed by an unblinded 
qualified person (eg, pharmacist or study nurse) at the site. When diluted as directed in the 
investigational product study manual provided by the Sponsor, placebo and investigational 
drug appear identical. See Section 7.2 below for diluent and infusion vessel and tubing 
specifications.
7.2
Dose and treatment regimens
The investigational product, anifrolumab 150 mg, 300 mg or placebo, will be administered via 
controlled IV infusion pump into a peripheral vein over at least 30 minutes Q4W. Each dose 
must be at least 14 days apart.
7.2.1
Dose preparation steps
From a 100 mL IV infusion bag of 0.9% normal saline, withdraw and discard a volume of 
saline equal to 2.0 mL. Then add 1.0 mL from each of the 2 vials in the kit into the infusion 
bag and mix by gentle inversion. Due to approximately 10% overfill of normal saline, the final 
volume of the dilution will be greater than 100 mL. 
7.2.2
Prior to administering the investigational product

Confirm subject was evaluated for signs and symptoms of TB

Women of childbearing potential must have a negative urine pregnancy test prior to 
receiving investigational product.

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
Subjects should not have clinically significant, active infection as determined by the 
Investigator. 

There should be at least 14 days between doses. If the previous investigational 
product infusion was given within 14 days, delay visit until >14 days has elapsed 
and contact the 
medical monitor. 

Pre-dose blood samples will be collected

Subjects should not be premedicated unless they have had a prior infusion-related 
reaction to anifrolumab. However, if a prior infusion-related reaction has been 
documented, the Investigator may elect to administer prophylactically an 
antihistamine or acetaminophen/paracetamol for the comfort and safety of the 
subject prior to subsequent infusions. The medications should be given after visit 
assessments have been completed. Prophylactic use of glucocorticosteroids prior to 
subsequent infusions is not permitted.
7.2.3
Investigational product administration procedures

Investigational product must be administered within 4 hours after preparation and 
may be stored at room temperature until administration. Total in-use storage time 
from dilution of anifrolumab to start of administration should not exceed 4 hours at 
room temperature. If refrigerated at 2 to 8°C (36 to 46°F), storage time should not 
exceed 24 hours. If storage time exceeds these limits, a new dose must be prepared 
from new vials.

Investigational product must be administered at room temperature by controlled 
infusion via an infusion pump into a peripheral vein. A physician must be present at 
the site or immediately available to respond to emergencies during all 
administrations of investigational product.

Because compatibility of anifrolumab with IV medications and solutions other than 
0.9% sodium chloride for injection, (United States Pharmacopeia), is not known, 
the investigational product solution should not be infused through an IV line in 
which other solutions or medications are being administered.

Investigational product should be administered over a minimum of 30 minutes. 

Immediately following the initial dosing, up to an additional 25 mL of saline will 
be given via infusion pump at the same pump speed utilised at the completion of the 
initial dosing.

An emergency cart should be available in the infusion suite.
7.2.4
Subject monitoring/procedures during and after the infusion
Subjects will be monitored during the administration of the investigational product and for at 
least 2 hours after the first 4 infusions (Weeks 0, 4, 8, and 12). If there are no safety concerns, 
for subsequent infusions subjects will be monitored during administration of the 
investigational product and for a minimum of 1 hour after completion of the IV infusion 
thereafter (Week 16 to Week 48). 

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Monitoring will include vital signs (oral temperature, BP, pulse rate, respiratory rate) in a 
sitting position at the following times:

Shortly before the IV infusion (within 15 ±5 minutes of the beginning of the 
investigational product infusion)

Every 15 ±5 minutes during infusion

Immediately after completion of administration of investigational product, 
including post-dose saline flush (within 15 ±5 minutes after completion of 
investigational product administration)

Every 30 ±5 minutes after completion of investigational product administration (not 
including saline flush) for at least 2 hours after the first 4 doses (Week 0 [Day 1] to 
Week 12) of investigational product are administered, and for at least 1 hour, 
thereafter (Week 16 to 48)

Samples for PK laboratory assessments should be collected 15 ±5 minutes after 
completion of investigational product administration after dosing on Week 0 
(Day 1) and Week 48
Vital signs may be taken more frequently, based on Investigator judgment. 
7.2.5
Discharge
The subject should only be discharged from the site after the minimum monitoring period and 
when judged stable in the opinion of the Investigator/designee. Blood pressure and pulse rate 
will be taken prior to discharge from the site.
7.2.6
Documentation of investigational product administration
Both the duration of the investigational product infusion and the duration of investigational 
product administration will be recorded. The duration of investigational product infusion and 
duration of investigational product administration will be calculated as follows:

Duration of infusion: the amount of time elapsed from the infusion start time to the 
infusion stop time. Infusion start time is defined as the time point where 
investigational product is first infused into the subject. Infusion stop time is defined 
as the time point where the infusion pump completes infusion of the investigational 
product, not including the saline flush.
For example: an infusion with a start time of 12:00 PM would have a duration of 
infusion recorded as 30 minutes (a time between 12:00 PM and 12:30 PM).

Duration of administration: the amount of time elapsed from the infusion pump start 
time to the infusion pump stop time PLUS the time required to complete the 
additional flush of saline. The duration of administration will always be greater than 
the duration of infusion and will always include the additional flush of saline.
Initial IV bag compatibility studies demonstrate that anifrolumab is compatible with IV bags 
composed of polyolefin that is latex-free, polyvinyl chloride (PVC)-free, and diethylhexyl 
phthalate (DEHP)-free, and IV administration lines composed of PVC and polyethylene that 

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are latex free and DEHP-free. Additional studies demonstrate that anifrolumab is compatible 
with IV bags and ancillaries comprised of materials as described in Table 6 and Table 7.
Table 6
Compatible materials of construction for IV bags
IV Bag Diluent
Materials of Construction
0.9% saline
Glass
0.9% saline
Polyolefin copolymer, ethylene and propylene
0.9% saline
PVC and DEHP
0.9% saline
Polyethylene
0.9% saline
Polypropylene
0.9% saline
Ethylene polyvinyl acetate
Table 7
Compatible materials of construction for ancillaries (eg, infusion 
tubing)
Materials of Construction
Polyethylene
PVC with DEHP
PVC with 2-ethylhexyltrimellitate
Polybutadiene
7.3
Labelling
Labels will be prepared in accordance with Good Manufacturing Practice (GMP) and local 
regulatory guidelines. The labels will fulfil GMP Annex 13 requirements for labelling. Label 
text will be translated into local language.
7.4
Storage
All study drugs should be kept in a secure place under appropriate storage conditions. The 
investigational product should be stored at 2 to 8°C (36 to 46°F) and must not be frozen. 
7.5
Compliance
The administration of all study drugs (including investigational product) should be recorded in 
the appropriate sections of the CRF. The investigational product will be administered by study 
site personnel, who will monitor compliance.
7.6
Accountability
The study drug provided for this study will be used only as directed in the study protocol.

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The study personnel will account for all study drug administered to the subjects.
The Investigator’s or site’s designated investigational product manager is required to maintain 
accurate investigational product accountability records. Upon completion of the study, copies 
of investigational product accountability records will be returned to AstraZeneca or designee. 
All unused investigational product will be returned to an AstraZeneca or designee-authorised 
depot or disposed of upon authorisation by AstraZeneca or designee or other written 
instructions provided by AstraZeneca or designee (for contact information and specific 
shipping instructions).
Details regarding supplies, dose preparation, process for reporting product complaints, and 
accountability for the investigational product will be provided to the sites.
7.7
Post study access to study treatment
Upon evaluation at Week 52, subjects will either be followed for a 12-week Follow-up Period,
or transition to an LTE study (if eligible) that will continue for approximately 3 years after the 
completion of the Week 52 visit.
8.
STATISTICAL ANALYSES 
8.1
Statistical considerations
All personnel involved with the analysis of the study will remain blinded until database lock 
and identification of protocol violations. Analyses will be performed by AstraZeneca or its 
representatives. 
A comprehensive Statistical Analysis Plan (SAP) will be prepared prior to the first subject in 
to the study. Any subsequent amendments to the SAP will be documented, with final 
amendments completed prior to unblinding of the data for the analysis. Details of all analyses, 
including sensitivity analyses, will be fully documented in the SAP.
8.2
Sample size estimate
A total of 450 subjects receiving SOC treatment will be randomised 1:2:2 to treatment with 
150 mg anifrolumab, 300 mg anifrolumab, or placebo.
The sample size is primarily driven by the need to acquire an adequate safety database size, as 
well as the ability to assess key secondary endpoints. The primary endpoint is the difference in 
proportions of subjects achieving SRI(4) at Week 52 comparing anifrolumab 300 mg to 
placebo. With assumed proportions of SRI(4) of 39% and 63% in the placebo and anifrolumab 
300 mg groups, respectively, 180 subjects/arm yields more than 99% power to reject the 
hypothesis of no difference using a 2-sided alpha of 0.05. The minimal detectable difference 
in SRI(4) between anifrolumab 300 mg versus placebo is approximately 10% with this sample 
size. 

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It is not straightforward to precisely arrive at the power estimate for the assessments of key 
secondary endpoints due to the multiplicity procedure used to preserve the type I error, as well 
as uncertainties of the size of sub-groups in most assessments. Approximate estimates of 
power for 2 example endpoints are listed below. These calculations assume that the primary 
endpoint is met, and the testing of the key secondary endpoints is therefore allowed. Further, 
for these examples each endpoint is tested using a weighted Holm procedure, and the alpha 
given by the assigned weight in the first step of the algorithm: 

Difference in proportions of subjects achieving SRI(4) at Week 52 in the IFN test 
high sub group: Given 75% of subjects are IFN test-high; proportions of SRI(4) in 
the IFN test-high subgroup of 35% and 61% in the placebo and anifrolumab 
treatment groups, respectively; a 2-sided alpha of 0.04 yields 98% power.

Difference in proportion of subjects who achieve an OCS dose ≤7.5 mg/day at 
Week 40, which is maintained through Week 52 in the sub-group of subjects with 
baseline OCS ≥10 mg/day: Given 60% of subjects have an OCS dose of at least 
10 mg at baseline; proportions of subjects tapering the OCS dose of 32% and 59% 
in the placebo and anifrolumab treatment groups, respectively; a 2-sided alpha of
0.004 yields 87% power. 
The anifrolumab 150 mg treatment group will be subject to a secondary analysis to inform the 
benefit:risk profile for anifrolumab. With half of the sample size (ie, 90 subjects) for the 
anifrolumab 150 mg treatment group, a 12.5% difference in SRI(4) between anifrolumab 150 
mg versus placebo would be associated with a nominal p-value of 0.05. The evaluation of 
anifrolumab 150 mg is outside of the formal multiplicity testing strategy.
The assumptions of the effect sizes and sizes of subgroups used for the calculations above are 
based on the observed results in the interim analyses of study CD IA MEDI 546-1013. 
8.3
Definitions of analysis sets
8.3.1
All subjects analysis set
This analysis set will comprise all subjects screened for the study and will be used for 
reporting of disposition and screening failures.
8.3.2
Full analysis set
The full analysis set will be used as the primary population for reporting efficacy and safety 
data. This comprises all subjects randomised into the study who receive at least 1 dose of 
investigational product and will be analysed according to randomised treatment (modified 
Intention-To-Treat). Any major deviations from randomised treatment will be listed and 
considered when interpreting the safety data.
8.3.3
Pharmacokinetic analysis set
All subjects who received anifrolumab and who had at least 1 quantifiable serum PK 
observation post first dose, will be included in the PK analysis dataset. All PK summaries will 
be based on this analysis set.

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8.4
Outcome measures for analyses
Baseline is defined as the last measurement prior to randomisation and dose administration on 
Day 1. If the Day 1 value is missing or is invalid or is collected after administration of 
investigational product, the latest assessment prior to dose administration on Day 1 will serve 
as baseline.
When applicable, adjudicated values of BILAG-2004, SLEDAI-2K, CLASI, and PGA will be 
used for all assessments.
8.4.1
Primary outcome variable
The primary endpoint used to evaluate the effect of anifrolumab 300 mg compared to placebo 
on disease activity is the difference in proportion of subjects achieving SRI(4) at Week 52, 
where a subject achieves SRI(4) if all of the following criteria are met:

Reduction from baseline of ≥4 points in the SLEDAI-2K;

No new organ system affected as defined by 1 or more BILAG-2004 A or 2 or more 
BILAG-2004 B items compared to baseline using BILAG-2004;

No worsening from baseline in the subjects’ lupus disease activity defined by an 
increase ≥0.30 points on a 3-point PGA VAS;

No discontinuation of investigational product or use of restricted medications 
beyond the protocol-allowed threshold before assessment. Allowed medication is 
defined in Section 3.3. 
8.4.2
Key secondary outcome variables
8.4.2.1
Systemic Lupus Erythematosus Responder Index of ≥4 at Week 52 in 
interferon test-high subjects
The key secondary endpoint used to evaluate the effect of anifrolumab 300 mg compared to 
placebo on disease activity in the IFN test-high subgroup is the difference in proportions of 
subjects achieving SRI(4) at Week 52 in subjects classified as IFN test-high. SRI(4) is defined 
in Section 8.4.1.
8.4.2.2
Oral corticosteroid management
The key secondary endpoint used to evaluate the effect of anifrolumab 300 mg versus placebo 
on the ability to reduce the OCS dose in subjects with baseline OCS ≥10 mg/day prednisone 
or equivalent is the difference in proportions of subjects meeting all the following criteria: 

Achieve an OCS dose of ≤7.5 mg/day prednisone or equivalent by Week 40; 

Maintain an OCS dose ≤7.5 mg/day prednisone or equivalent from Week 40 to 
Week 52; 

No discontinuation of investigational product or use of restricted medications 
beyond the protocol-allowed threshold before assessment (see Section 3.3).

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8.4.2.3
Skin lesions
The key secondary endpoint used to evaluate the effect of anifrolumab 300 mg versus placebo 
on inflammatory cutaneous lupus lesions in subjects with baseline CLASI activity score ≥10 is 
the difference in proportions of subjects who meet the following criteria: 

Achieve ≥50% reduction of CLASI activity score at Week 12 compared to baseline; 

No discontinuation of investigational product or use of restricted medications 
beyond the protocol-allowed threshold before assessment (see Section 3.3).
8.4.2.4
Systemic Lupus Erythematosus Responder Index of ≥4 at Week 24
The key secondary endpoint used to evaluate the early effect of anifrolumab 300 mg 
compared to placebo on disease activity is the difference in proportions of subjects achieving 
SRI(4) at Week 24. SRI(4) is defined in Section 8.4.1. 
8.4.2.5
Flares 
The key secondary endpoint used to evaluate the effect of anifrolumab 300 mg versus placebo 
on flares is the annualised flare rate through Week 52. A flare is defined as either 1 or more 
new BILAG-2004 A or 2 or more new BILAG-2004 B items compared to the previous visit 
(ie, a worsening from an E, D, or C score to a B score in at least 2 organ systems or a 
worsening from an E, D, C, or B to an A score in any 1 organ system compared to the 
previous visit).
8.4.3
Other secondary outcome variables
8.4.3.1
Assessment of disease activity
SRI(4) of anifrolumab 150 mg treatment group
The effect of anifrolumab 150 mg compared to placebo on disease activity will be assessed by 
the difference in proportions of subjects achieving SRI(4) at Week 52. SRI(4) is defined in 
Section 8.4.1.
Supportive SRI endpoints
In addition to the endpoint described in Section 8.4.1, the difference between anifrolumab 
300 mg and placebo in SRI at Week 52 will be assessed using levels other than 4, ie, SRI(5), 
SRI(6), SRI(7), and SRI(8), where SRI(X) (X=5, 6, 7, or 8) is defined by the proportion of 
subjects who meet the following criteria:

Reduction from baseline of ≥X points in the SLEDAI-2K;

No new organ systems affected as defined by 1 or more BILAG-2004 A or 2 or 
more BILAG-2004 B items compared to baseline using BILAG-2004;

No worsening from baseline in the subjects’ lupus disease activity defined by an 
increase ≥0.30 points on a 3-point PGA VAS;

No discontinuation of investigational product or use of restricted medications 
beyond the protocol-allowed threshold before assessment (see Section 3.3).

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The difference between anifrolumab and placebo in the proportion of subjects achieving 
SRI(X), X=4, 5, 6, 7, or 8 will also be assessed longitudinally over time up to Week 52.
BICLA
The effect of anifrolumab 300 mg versus placebo on disease activity will also be assessed 
using the difference in proportion of subjects meeting the criteria for BICLA response at 
Week 52, where a subject is a BICLA responder if the following criteria are met:

Reduction of all baseline BILAG-2004 A to B/C/D and baseline BILAG-2004 B to 
C/D, and no BILAG-2004 worsening in other organ systems, as defined by 1 new 
BILAG-2004 A or more than 1 new BILAG-2004 B item; 

No worsening from baseline in SLEDAI-2K as defined as an increase from baseline 
of >0 points in SLEDAI-2K;

No worsening from baseline in the subjects’ lupus disease activity defined by an 
increase ≥0.30 points on a 3-point PGA VAS;

No discontinuation of investigational product or use of restricted medications 
beyond the protocol-allowed threshold before assessment (see Section 3.3).
The difference between anifrolumab 300 mg and placebo in the proportion of subjects 
achieving BICLA will also be assessed longitudinally over time up to Week 52.
Supportive outcome variables of the Individual components of SRI and BICLA
The individual components of the composite SRI and BICLA endpoints as defined in Section 
8.4.1 and above will be assessed by treatment. 
Further, the effect of anifrolumab 300 mg versus placebo on PGA will be evaluated using the 
difference in mean change in PGA from baseline longitudinally over time to Week 52. In 
addition, the effect of anifrolumab 300 mg versus placebo on Major Clinical Response and 
Partial Clinical Response will be evaluated where these endpoints are defined as: 

Difference in proportion of subjects who achieve Major Clinical Response, ie, a 
subject with BILAG-2004 C scores or better at Week 24 with no new BILAG-2004 
A or BILAG-2004 B scores and maintenance of response with no new BILAG-2004 
A or B scores between Week 24 and Week 52.

Difference in proportion of subjects who achieve Partial Clinical Response, ie, a 
subject with a maximum of 1 BILAG-2004 B score or better at Week 24 and 
maintenance of response without a new BILAG-2004 A or more than 1 new 
BILAG-2004 B item out to Week 52.
Active, swollen and tender joints
The endpoints used to evaluate the effect of anifrolumab 300 mg versus placebo on active, 
swollen, and tender joints are: 

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
Difference in change from baseline to Week 52 in the number of active, swollen, 
and tender joints; 

Difference in proportion of subjects with at least 8 swollen and at least 8 tender 
joints at baseline who achieve at least a 20% reduction from baseline in both the 
number of swollen and tender joints at Week 52;

Difference in proportion of subjects with at least 8 swollen and at least 8 tender 
joints at baseline who achieve at least a 50% reduction from baseline in both the 
number of swollen and tender joints at Week 52.
Change in SDI
The endpoint used to evaluate the effect of anifrolumab 300 mg versus placebo on irreversible 
damage in SLE subjects is the difference in mean change in SDI global score from baseline to 
Week 52.
Supportive outcome variables for the assessment of skin lesions
In addition to the endpoint described in Section 8.4.2.3, the maintenance of effect in the 
CLASI activity score will be evaluated using the proportion of subjects with a CLASI activity 
score ≥10 at baseline who achieve at least a 50% reduction in CLASI activity score at 
Week 12 and maintain response at Week 52.
The difference between anifrolumab 300 mg and placebo in the mean change from baseline in 
CLASI activity as well as CLASI damage score will be evaluated longitudinally over time up 
to Week 52.
Supportive outcome variables for the assessment of flares
In addition to the endpoint in Section 8.4.2.5, the annualised rate of flares will also be 
evaluated where a flare is defined as either 1 or more new BILAG-2004 A or 2 or more new 
BILAG-2004 B items compared to baseline. 
In addition, time to flare, ie, time from first exposure of investigational product to the first 
flare will be assessed. Both definitions of flares will be used for the assessment: either 1 or 
more new BILAG-2004 A or 2 or more new BILAG-2004 B items compared to previous visit
(as introduced in Section 8.4.2.5); and the definition described above comparing to baseline. 
8.4.4
Subject reported outcome variables
8.4.4.1
Short Form 36 version 2 (acute recall)
The difference between anifrolumab 300 mg and placebo in the mean change from baseline in 
SF-36v2 (acute) Physical Component Score and Mental Component Score to Week 52 will be 
assessed. 
8.4.4.2
Pain Numerical Rating Scale 
The difference between anifrolumab 300 mg and placebo in the mean change from baseline in 
pain NRS to Week 52 will be assessed.

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8.4.4.3
Functional Assessment of Chronic Illness Therapy-FATIGUE 
The difference between anifrolumab 300 mg and placebo in the mean change from baseline in 
FACIT-F total score to Week 52 will be assessed. 
8.4.4.4
Patient Global Assessment 
The difference between anifrolumab 300 mg and placebo in the mean change from baseline in 
PtGA (measured on a VAS ranging from 0 to 100mm) to Week 52 will be assessed.
8.4.4.5
LUPUS quality of life scale
The difference between anifrolumab 300 mg and placebo in the mean change from baseline in 
LUPUS QoL score to Week 52 will be assessed.
8.4.4.6
EuroQoL 5 dimensions
The proportion of subjects in each EQ-5D-5L health state (no problems, slight problems, 
moderate problems, severe problems and unable to/extreme problems), by dimension, as well as 
the VAS Score and single summary utility index, including changes from baseline, will be 
explored over time. 
8.4.4.7
Work productivity and Activity Impairment - Lupus
The WPAI score levels (percentages) at baseline, Week 24, and Week 52 will be explored. 
8.4.4.8
Medical Resource Use Questionnaire
The following endpoints will be explored: 

Number of subjects with unscheduled health care visits; 

Number of unscheduled specialist visits;

Number of unscheduled primary care visits;

Number of subjects with unscheduled emergency department visits;

Of subjects with visits, number of unscheduled emergency department visits;

Number of subjects with hospital stays;

Of subjects with visits, number of hospital visits;

Length of hospital stay.
8.4.5
Safety variables
The following safety data will be collected: vital signs, physical examination, 12-lead ECG, 
haematology, clinical chemistry, urinalysis, C-SSRS, PHQ-8, flares as defined by a 
modification of the SELENA Flare Index using the SLEDAI 2K, and reported AEs (including 
AEs of special interest, see Section 6.5).
Change from baseline to each post-treatment time point where scheduled assessments were 
made will be calculated for relevant measurements. The number and proportion of subjects 

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with flares as defined by a modification of the SELENA Flare Index using the SLEDAI 2K
and the number of such flares will be explored. Marked abnormal ECG values or changes 
from baseline will be identified based on pre-determined criteria. Occurrence of suicidal 
behaviour and ideation, based on the C-SSRS, from baseline up to Week 52 will be explored. 
AEs will be summarised by means of descriptive statistics and qualitative summaries. 
8.4.5.1
Other significant adverse events
During the evaluation of the AE data, a 
medically qualified expert will review the list of 
AEs that were not reported as SAEs and discontinuations due to AEs.
Based on the expert’s judgment, significant AEs of particular clinical importance may, after 
consultation with the Astra Zeneca Global Patient Safety Physician, be considered other 
significant AEs (OAEs) and reported as such in the CSR.
Examples of these are marked haematological and other laboratory abnormalities, and certain 
events that lead to intervention (other than those already classified as serious), dose reduction, 
or significant additional treatment.
8.4.6
Immunogenicity variables
ADA assessments will be conducted utilising a tiered approach (screen, confirm, titre). The 
presence of nAb will be tested in all ADA-positive samples time points of week 12 and later 
using a ligand binding assay.
8.4.7
Pharmacokinetic variables
Due to the limited sampling schedule, the PK assessment will be primarily based on the 
observed steady-state serum trough (predose) concentrations, Ctrough. Maximum concentrations 
after the first and last dose will also be evaluated.
8.4.8
Pharmacodynamic outcome variables
The outcome variable for anti-dsDNA antibodies, C3, C4, and CH50 complement levels will 
be the mean change from baseline to Week 52 in subjects with abnormal complement level at 
baseline, or positive anti-dsDNA antibodies at baseline, defined as complement level below 
lower limit of normal. 
The outcome variable for the suppression of the IFN 21 gene PD signature is the percent 
suppression of fold change, relative to a pooled normal control, from baseline levels. 
8.5
Methods for statistical analyses
The analysis of the primary and secondary endpoints will include all data captured during the 
52-week treatment period, regardless of whether study treatment was prematurely 
discontinued, or delayed, and/or irrespective of protocol adherence. 

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
From Week 0 (Day 1) to Week 12, the study design allows for 1 burst and taper of 
OCS in order to allow adequate time for investigational product to achieve 
significant clinical benefit.

One burst of OCS to ≤20 mg/day between Week 12 and Week 40 is also allowed 
for non-SLE causes.

Subjects who require additional bursts of OCS will still be encouraged to remain in 
the study, but will be considered a non-responder for subsequent assessments of 
disease activity
Subjects who discontinue investigational product will be asked to come to each visit for the 
scheduled assessments through the Week 52 end of treatment visit. The definition of the 
primary endpoint includes a criterion that corresponds to a non-responder imputation for 
subjects who prematurely discontinue from investigational product, or who receive restricted 
medications beyond the protocol-allowed threshold. Sensitivity analyses, excluding this 
criterion from the definition of SRI-response, where missing data is handled in a different 
way, (eg, a multiple imputations method) may be carried out. Details will be pre-specified in 
the SAP. 
Presentation of Results
All data will be presented by treatment group. Descriptive statistics (number, mean, standard 
deviation [SD], median, minimum, and maximum) will be provided for continuous variables, 
and counts and percentages will be presented for categorical variables.
95% CIs will be presented for treatment comparisons. If a model is used to estimate the 
treatment difference, the corresponding CI according to the model will be presented. 
Otherwise, the unadjusted CI will be used. Nominal p-values may be presented for secondary 
endpoints not included in the strategy for preserving the type I error rate. Statistical 
significance cannot be interpreted from these p-values. 
Demography and baseline characteristics will be summarised by treatment group for the full 
analysis set. 
8.5.1
Analysis of the primary variable 
The estimand of primary interest in this study is the difference in change from baseline in 
disease activity between anifrolumab 300 mg and placebo, to reflect the effect of the initially 
assigned and dosed investigational product (full analysis set). This is measured by the primary 
efficacy endpoint, defined as the difference in the proportion of subjects achieving SRI(4) at 
Week 52 comparing the anifrolumab 300 mg to the placebo group. The null hypothesis is that 
the proportion of subjects achieving SRI(4) on anifrolumab 300 mg is equal to that of placebo. 
The alternative hypothesis is that the proportion of subjects achieving SRI(4) on anifrolumab 
300 mg is not equal to that on placebo, ie,
H0: difference in proportion achieving SRI(4) (anifrolumab vs Placebo) = 0
Ha: difference in proportion achieving SRI(4) (anifrolumab vs Placebo) ≠ 0

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The proportion of subjects achieving SRI(4) in the anifrolumab 300 mg treatment group will 
be compared to that in the placebo group using a Cochran-Mantel-Haenszel (CMH) approach 
(Cochran, 1954) stratified by: 

SLEDAI-2K score at screening (<10 points versus ≥10 points)

Week 0 (Day 1) OCS dose (<10 mg/day versus ≥10 mg/day prednisone or 
equivalent)

Results of a type 1 IFN test (high versus low)
Strata with low counts will be collapsed prior to the analysis. Details for collapsing of strata 
will be pre-specified in the SAP.
The estimated treatment effect (ie, the difference in response rate for anifrolumab 300 mg 
versus placebo), corresponding 95% CI, and 2-sided p-value for the difference at Week 52 
will be presented. In addition, the response rate and the corresponding 95% CI within each 
treatment group will be presented.
Further, longitudinal presentations of results over time based on the same analysis, with the 
corresponding 95% CI, will be created. In addition, the individual components of the 
composite SRI(4) endpoints will be summarised by treatment group.
8.5.2
Analysis of the secondary variables
8.5.2.1 Analysis methods for key secondary efficacy variables
All key secondary endpoints, with the exception of the difference in annualised flare rate 
through Week 52 (which will be analysed using a negative binomial regression model), will 
be analysed and presented similarly to the primary endpoint as described in Section 8.5.1. 
Details will be described in the SAP. Non-responder imputation will be used when applicable 
to handle missing data. 
The flare rate in the anifrolumab 300 mg treatment group will be compared to the flare rate in 
the placebo group using a negative binomial model. The response variable in the model will 
be the number of flares over the 52-week treatment period. The model will include covariates 
of treatment group, and the stratification factors. The logarithm of the follow-up time will be 
used as an offset variable in the model to adjust for subjects having different exposure times. 
The estimated treatment effect and the corresponding 95% CI as well as the 2-sided p-value 
will be presented. In addition, supportive analyses only including flares while on treatment 
will be carried out.
8.5.2.2 Analysis methods for other secondary efficacy variables
The difference between anifrolumab 150 mg and placebo in the proportion of subjects who 
achieve SRI(4) at Week 52 will be assessed and presented similarly to the primary endpoint as 
described in Section 8.5.1. The difference between anifrolumab 300 mg and placebo in other 
secondary binary responder endpoints will be assessed in the same way. In addition, the 

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individual components of the composite SRI and BICLA endpoints will be summarised by 
treatment group.
The time to first flare will be analysed as a supportive analysis to the assessment of reduction 
of flares to explore the extent to which treatment with anifrolumab 300 mg delays the time to 
first flare compared with placebo. A Cox proportional hazard model will be fitted to data 
including the covariates of treatment, and the stratification factors. Details will be presented in 
the SAP.
Continuous endpoints (including SLEDAI-2K, PGA, joint counts (active, swollen and tender), 
activity and damage CLASI scores, FACIT-F, PtGA, and LUPUS QoL Scale) will be 
analysed using linear mixed effect models with fixed effects for treatment group, visit, and 
stratification factors and subject as random effect. Results will be presented in terms of the 
adjusted means for each treatment group, estimates of treatment differences, and associated 
CIs. Model assumptions will be checked and, if not met, appropriate data transformations may 
be applied or non-parametric approaches will be considered. Details will be presented in the 
SAP. 
The EQ-5D-5L health states (no problems, slight problems, moderate problems, severe 
problems and unable to/extreme problems) will be summarised by visit and treatment group 
for each dimension. The VAS Score and single summary utility index as well as their change 
from baseline will also be summarised by visit and treatment group. The WPAI scores will be 
summarised as percentages by visit and treatment. Also, the improvements in these scores 
from baseline to Week 24 and Week 52 will be summarised. The medical resource use, as 
described in Section 8.4.4.8, will be summarised by visit and treatment. 
8.5.2.3
Analysis methods for safety variables
AEs (including AESIs) will be summarised by means of counts summaries by Medical 
Dictionary for Regulatory Activities (MedDRA) System Organ Class and Preferred Term (PT) 
separately for the study periods (treatment period and follow-up period). All AEs will be 
listed. 
Laboratory data for haematology and clinical chemistry will be summarised. The frequency of 
changes with respect to normal ranges between baseline and each post-treatment time point 
will be tabulated. Frequencies of clinically noteworthy values (defined in the SAP) occurring 
during the clinical study will also be given. Shifts from normal to abnormal between baseline 
and each post-baseline time point will be evaluated for urinalysis.
The incidence of markedly abnormal values and changes from baseline in the ECG parameters 
will be summarized by treatment group.
The proportion of subjects with suicidal behaviour and suicidal ideation throughout the study 
based on the C-SSRS will be presented for each treatment group. The proportion of subjects 
within each of the 4 suicidal behaviour categories and within each of the 5 suicidal ideation 
sub-categories will also be presented for each treatment group. Descriptive statistics on the 

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total number of attempts, total number of interrupted attempts, and total number of aborted 
attempts will be summarized for each treatment group.
Other safety variables will be summarised as appropriate. Further details will be provided in 
the SAP.
8.5.2.4
Analysis method for immunogenicity variables
Anti-drug antibodies to anifrolumab will be summarised using descriptive statistics at each 
visit by treatment group. ADA titres-time profiles of anifrolumab by treatment group will be 
generated. The impact of ADA on PK and PD will be assessed. The potential association of
ADA with safety and efficacy will be explored. 
8.5.2.5
Analysis methods for pharmacokinetic variables
Anifrolumab serum concentrations will be summarised using descriptive statistics at each visit 
by treatment group. Serum concentration-time profiles of anifrolumab by treatment group will 
be generated. The potential influence of demographic covariates such as body weight, race, 
gender and age will be explored. Impact of ADA on PK will also be explored. Serum 
concentrations of anifrolumab, summary statistics, empirical covariate analysis results and PK 
profiles will be provided in the CSR or as an addendum to the CSR.
8.5.2.6
Analysis methods for pharmacodynamic variables
Pharmacodynamic variables will be summarised as appropriate.
8.5.3
Subgroup analysis 
To explore the uniformity of the detected overall treatment effect on the primary, and when 
applicable, key secondary efficacy endpoints, subgroup analyses may be performed for the 
following factors: 

SLEDAI-2K score at screening (<10 points versus ≥10 points) 

OCS dose at baseline (<10 mg/day versus ≥10 mg/day prednisone or equivalent) 

IFN test (IFN test [high versus low]) 

Gender 

Age (≥18 to 65 and ≥65 years) 

Geographic region 

Onset of disease (adult versus paediatric onset) 

BMI (≤35, >35 kg/m2) 

Race 
Full details of the subgroup analyses will be pre-specified in the SAP. 
8.5.4
Interim analysis
No interim analysis is planned.

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8.5.5
Pooled analysis
A pre-planned pooled analysis of SRI(4) at Week 52 in the IFN test-low subjects, pooling data 
from this study and its sister study, D3461C00004, will be carried out to characterise the 
disease activity in this population. 
Similarly, pre-planned pooled analyses will be carried out to further support the evaluation of 
the key secondary endpoints assessing the effect of anifrolumab 300 mg on skin lesions, 
ability to reduce the OCS dose, and flares. 
Details of these analyses will be presented in the SAP for the Integrated Summary of Efficacy.
9.
STUDY AND DATA MANAGEMENT
9.1
Monitoring of the study
During the study, an AstraZeneca or designee representative will have regular contacts with 
the study site, including visits to:

Provide information and support to the Investigator(s)

Confirm that facilities remain acceptable

Confirm that the investigational team is adhering to the protocol, that data are being 
accurately and timely recorded in the CRFs, that biological samples are handled in 
accordance with the Laboratory Manual and that study drug accountability checks 
are being performed

Perform source data verification (a comparison of the data in the CRFs with the 
subject’s medical records at the hospital or practice, and other records relevant to 
the study) including verification of informed consent of participating subjects. This 
will require direct access to all original records for each subject (eg, clinic charts)

Ensure withdrawal of informed consent to the use of the subject’s biological 
samples is reported and biological samples are identified and disposed of/destroyed 
accordingly, and the action is documented, and reported to the subject
The AstraZeneca representative will be available between visits if the Investigator(s) or other 
staff at the centre needs information and advice about the study conduct.
9.1.1
Source data
Refer to the Clinical Study Agreement (CSA) for location of source data.
9.1.2
Study agreements
The PI at each/the centre should comply with all the terms, conditions, and obligations of the 
CSA, or equivalent, for this study. In the event of any inconsistency between this Clinical 
Study Protocol and the CSA, the terms of the Clinical Study Protocol shall prevail with 
respect to the conduct of the study and the treatment of subjects and in all other respects, not 
relating to study conduct or treatment of subjects, the terms of the CSA shall prevail.

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Agreements between 
 on behalf of AstraZeneca, and the PI must be in place before any 
study-related procedures can take place, or subjects are enrolled.
9.1.3
Archiving of study documents
The Investigator follows the principles outlined in the CSA.
9.2
Study timetable and end of study
The end of the study is defined as ‘the last visit of the last subject undergoing the study’.
The study is expected to start in Quarter 2, 2015 and to end by Quarter 2, 2018.
The study may be terminated at individual centres if the study procedures are not being 
performed according to Good Clinical Practice (GCP), or if recruitment is slow. AstraZeneca 
may also terminate the entire study prematurely if concerns for safety arise within this study 
or in any other study with anifrolumab.
9.3
Data management
Data management will be performed by 
, according to the Clinical Informatics Plan. 
The 
system will be used for data collection and query handling. The 
Investigator will ensure that data are recorded on the CRFs as specified in the study protocol 
and in accordance with the instructions provided.
The Investigator ensures the accuracy, completeness, and timeliness of the data recorded and 
the provision of answers to data queries according to the CSA. The Investigator will sign the 
completed CRFs. A copy of the completed CRFs will be archived at the study site.
Adverse events and medical/surgical history will be classified according to the terminology of 
the latest version of the MedDRA. Medications will be classified according to the 
AstraZeneca Drug Dictionary. All coding will be performed by the 
coding group. Data 
queries will be raised for inconsistent, impossible or missing data. All entries to the study 
database will be available in an audit trail.
The data will be validated as defined in the Clinical Informatics Plan and Edit Specifications 
Document. Quality control procedures will be applied to each stage of data handling to ensure 
that all data are reliable and have been processed correctly. The Clinical Informatics Plan will 
also clarify the roles and responsibilities of the various functions and personnel involved in 
the data management process.
When all data have been coded, validated, signed and locked, clean file will be declared. Any 
treatment revealing data may thereafter be added and the final database will be locked.

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Serious adverse event reconciliation
Serious adverse event reconciliation reports are produced and reconciled with the subject 
safety database and/or the investigational site. SAE reconciliation between safety data and 
clinical data will be performed by 
 The frequency depends on the expected volume of 
SAE reports and will be defined in the AE/SAE Reconciliation Plan. 
Management of external data
The data collected through third party sources will be obtained and reconciled against study 
data.
10.
ETHICAL AND REGULATORY REQUIREMENTS
10.1
Ethical conduct of the study
The study will be performed in accordance with ethical principles that have their origin in the 
Declaration of Helsinki and are consistent with ICH/GCP, applicable regulatory requirements 
and the AstraZeneca policy on Bioethics and Human Biological Samples.
10.2
Subject data protection
The ICF will incorporate (or, in some cases, be accompanied by a separate document 
incorporating) wording that complies with relevant data protection and privacy legislation.
10.3
Ethics and regulatory review
An EC should approve the final study protocol, including the final version of the ICF and any 
other written information and/or materials to be provided to the subjects. The Investigator will 
ensure the distribution of these documents to the applicable EC, and to the study site staff.
The opinion of the EC should be given in writing. The Investigator should submit the written 
approval to AstraZeneca or designee before enrolment of any subject into the study. 
The EC should approve all advertising used to recruit subjects for the study.
AstraZeneca or designee should approve any modifications to the ICF that are needed to meet 
local requirements.
If required by local regulations, the protocol should be re-approved by the EC annually.
Before enrolment of any subject into the study, the final study protocol, including the final 
version of the ICF, is approved by the national regulatory authority or a notification to the 
national regulatory authority is done, according to local regulations.
AstraZeneca or designee will handle the distribution of any of these documents to the national 
regulatory authorities.

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AstraZeneca or designee will provide Regulatory Authorities, ECs and PIs with safety 
updates/reports according to local requirements.
Each PI is responsible for providing the EC with reports of any serious and unexpected 
adverse drug reactions from any other study conducted with the investigational product. 
AstraZeneca or designee will provide this information to the PI so that he/she can meet these 
reporting requirements.
10.4
Informed consent
The PI(s) at each centre will:

Ensure each subject is given full and adequate oral and written information about 
the nature, purpose, possible risk and benefit of the study

Ensure each subject is notified that they are free to discontinue from the study at 
any time

Ensure that each subject is given the opportunity to ask questions and allowed time 
to consider the information provided

Ensure each subject provides signed and dated informed consent before conducting 
any procedure specifically for the study

Ensure the original, signed ICF(s) is/are stored in the Investigator’s Study File

Ensure a copy of the signed ICF(s) is/are given to the subject

Ensure that any incentives for subjects who participate in the study as well as any 
provisions for subjects harmed as a consequence of study participation are 
described in the ICF(s) that is/are approved by an EC.
10.5
Changes to the protocol and informed consent form
Study procedures will not be changed without the mutual agreement of the International 
coordinating Investigator and AstraZeneca or designee.
If there are any substantial changes to the study protocol, then these changes will be 
documented in a study protocol amendment and where required in a new version of the study 
protocol (Revised Clinical Study Protocol).
The amendment is to be approved by the relevant EC and if applicable, the national regulatory 
authority, before implementation. Local requirements are to be followed for revised protocols.
AstraZeneca or designee will distribute any subsequent amendments and new versions of the 
protocol to each PI. For distribution to the ECs, see Section 10.3.
If a protocol amendment requires a change to a centre’s ICF, AstraZeneca or designee and the 
centre’s EC are to approve the revised ICF before the revised form is used. 
If local regulations require, any administrative change will be communicated to or approved 
by each EC.

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10.6
Audits and inspections
Authorised representatives of AstraZeneca, a regulatory authority, or an EC may perform 
audits or inspections at the centre, including source data verification. The purpose of an audit 
or inspection is to systematically and independently examine all study-related activities and 
documents, to determine whether these activities were conducted, and data were recorded, 
analysed, and accurately reported according to the protocol, GCP, guidelines of the ICH, and 
any applicable regulatory requirements. The Investigator will contact AstraZeneca or designee 
immediately if contacted by a regulatory agency about an inspection at the centre.
11.
LIST OF REFERENCES
ACR ad hoc committee, September 1999
ACR ad hoc committee. Guidelines for Referral and Management of systemic Lupus 
Erythematosus in Adults. Arthritis & Rheumatism Vol. 42, No. 9, September 1999, pp 1785–
1796).
American College of Rheumatology, 2013
American College of Rheumatology. Vasculitis, https://www.rheumatology.org/ 
Practice/Clinical/Patients/Diseases_And_Conditions/Vasculitis, updated February 2013.
American Psychiatric Association, 1994
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Edition Number 5
Date 18 May 2016
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Clinical Study Protocol Appendix B
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix B
Additional Safety Information

Clinical Study Protocol Appendix B
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
2(3)
FURTHER GUIDANCE ON THE DEFINITION OF A SERIOUS 
ADVERSE EVENT (SAE)
Life threatening
‘Life-threatening’ means that the subject was at immediate risk of death from the AE as it 
occurred or it is suspected that use or continued use of the product would result in the 
subject’s death. ‘Life-threatening’ does not mean that had an AE occurred in a more severe 
form it might have caused death (eg, hepatitis that resolved without hepatic failure).
Hospitalisation
Outpatient treatment in an emergency room is not in itself a serious AE, although the reasons 
for it may be (eg, bronchospasm, laryngeal oedema). Hospital admissions and/or surgical 
operations planned before or during a study are not considered AEs if the illness or disease 
existed before the subject was enrolled in the study, provided that it did not deteriorate in an 
unexpected way during the study.
Important medical event or medical intervention
Medical and scientific judgement should be exercised in deciding whether a case is serious in 
situations where important medical events may not be immediately life threatening or result in 
death, hospitalisation, disability or incapacity but may jeopardize the subject or may require 
medical intervention to prevent one or more outcomes listed in the definition of serious. These 
should usually be considered as serious.
Simply stopping the suspect drug does not mean that it is an important medical event; medical 
judgement must be used.
Examples of such events are:

Angioedema not severe enough to require intubation but requiring iv hydrocortisone 
treatment

Hepatotoxicity caused by paracetamol (acetaminophen) overdose requiring 
treatment with N-acetylcysteine

Intensive treatment in an emergency room or at home for allergic bronchospasm

Blood dyscrasias (eg, neutropenia or anaemia requiring blood transfusion, etc) or 
convulsions that do not result in hospitalisation

Development of drug dependency or drug abuse.

Clinical Study Protocol Appendix B
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
3(3)
A GUIDE TO INTERPRETING THE CAUSALITY QUESTION
The following factors should be considered when deciding if there is a “reasonable 
possibility” that an AE may have been caused by the drug.

Time Course. Exposure to suspect drug. Has the subject actually received the 
suspect drug? Did the AE occur in a reasonable temporal relationship to the 
administration of the suspect drug?

Consistency with known drug profile. Was the AE consistent with the previous 
knowledge of the suspect drug (pharmacology and toxicology) or drugs of the same 
pharmacological class? OR could the AE be anticipated from its pharmacological 
properties?

Dechallenge experience. Did the AE resolve or improve on stopping or reducing the 
dose of the suspect drug?

No alternative cause. The AE cannot be reasonably explained by another aetiology 
such as the underlying disease, other drugs, other host or environmental factors.

Rechallenge experience. Did the AE reoccur if the suspected drug was reintroduced 
after having been stopped? AstraZeneca would not normally recommend or support 
a rechallenge.

Laboratory tests. A specific laboratory investigation (if performed) has confirmed 
the relationship?
A “reasonable possibility” could be considered to exist for an AE where one or more of these 
factors exist.
In contrast, there would not be a “reasonable possibility” of causality if none of the above 
criteria apply or where there is evidence of exposure and a reasonable time course but any 
dechallenge (if performed) is negative or ambiguous or there is another more likely cause of 
the AE.
In difficult cases, other factors could be considered such as:

Is this a recognised feature of overdose of the drug?

Is there a known mechanism?
Ambiguous cases should be considered as being a “reasonable possibility” of a causal 
relationship unless further evidence becomes available to refute this. Causal relationship in 
cases where the disease under study has deteriorated due to lack of effect should be classified 
as no reasonable possibility.

Clinical Study Protocol Appendix C
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix C
Actions Required in Cases of Combined Increase of Aminotransferase and 
Total Bilirubin - Hy’s Law

Clinical Study Protocol Appendix C
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
2(6)
TABLE OF CONTENTS
PAGE
TABLE OF CONTENTS.........................................................................................2
1.
INTRODUCTION ...................................................................................................3
2.
DEFINITIONS.........................................................................................................3
3.
IDENTIFICATION OF POTENTIAL HY’S LAW CASES...................................3
4.
FOLLOW-UP ..........................................................................................................4
4.1
Potential Hy’s Law Criteria not met ........................................................................4
4.2
Potential Hy’s Law Criteria met ..............................................................................4
5.
REVIEW AND ASSESSMENT OF POTENTIAL HY’S LAW CASES...............5
6.
REFERENCES ........................................................................................................6

Clinical Study Protocol Appendix C
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
3(6)
1.
INTRODUCTION
During the course of the study the Investigator will remain vigilant for increases in liver 
biochemistry. The investigator is responsible for determining whether a subject meets 
potential Hy’s Law (PHL) criteria at any point during the study.
The Investigator participates, together with 
 clinical project representatives, in review and 
assessment of cases meeting PHL criteria to agree whether Hy’s Law (HL) criteria are met.
HL criteria are met if there is no alternative explanation for the elevations in liver 
biochemistry other than Drug Induced Liver Injury (DILI) caused by the Investigational 
Medicinal Product (IMP). 
The Investigator is responsible for recording data pertaining to PHL/HL cases and for 
reporting Adverse Events (AE) and Serious Adverse Events (SAE) according to the outcome 
of the review and assessment in line with standard safety reporting processes.
2.
DEFINITIONS
Potential Hy’s Law (PHL)
Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) ≥3x upper limit of 
normal (ULN) and total bilirubin (TBL) ≥2xULN irrespective of an increase in alkaline 
phosphatase (ALP), at any point during the study following the start of study medication. The 
elevations do not have to occur at the same time or within a specified time frame.
Hy’s Law (HL)
AST or ALT ≥3x ULN and TBL ≥2xULN, where no other reason, other than the IMP, can be 
found to explain the combination of increases, eg, elevated ALP indicating cholestasis, viral 
hepatitis, another drug. The elevations do not have to occur at the same time or within a 
specified time frame.
For PHL and HL the elevation in transaminases must precede or be coincident with (ie, on the 
same day) the elevation in TBL, but there is no specified timeframe within which the 
elevations in transaminases and TBL must occur.
3.
IDENTIFICATION OF POTENTIAL HY’S LAW CASES
In order to identify cases of PHL it is important to perform a comprehensive review of 
laboratory data for any subject who meets any of the following identification criteria in 
isolation or in combination:

ALT ≥3xULN

Clinical Study Protocol Appendix C
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
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
AST ≥3xULN

TBL ≥2xULN
When a subject meets any of the identification criteria, in isolation or in combination, the 
central laboratory will immediately send an alert to the Investigator (also sent to
 
representative). 
The Investigator will also remain vigilant for any local laboratory reports where the 
identification criteria are met, where this is the case the Investigator will:

Request a repeat of the test (new blood draw) by the central laboratory

Complete the appropriate unscheduled laboratory CRF module(s) with the original 
local laboratory test result
When the identification criteria are met from central or local laboratory results the Investigator 
will without delay:

Determine whether the subject meets PHL criteria (see Section 2 of this appendix 
for definition) by reviewing laboratory reports from all previous visits (including 
both central and local laboratory results)
The Investigator will without delay review each new laboratory report and if the identification 
criteria are met will:

Determine whether the subject meets PHL criteria (see Section 2 of this appendix 
for definition) by reviewing laboratory reports from all previous visits

Promptly enter the laboratory data into the laboratory CRF
4.
FOLLOW-UP
4.1
Potential Hy’s Law Criteria not met
If the subject does not meet PHL criteria the Investigator will:

Perform follow-up on subsequent laboratory results according to the guidance 
provided in the Clinical Study Protocol.
4.2
Potential Hy’s Law Criteria met
If the subject does meet PHL criteria the Investigator will:

Immediately notify the 
 Medical Monitor representative who will then inform 
the AstraZeneca Medical and Safety Study Team within 1 business day.

Clinical Study Protocol Appendix C
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
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Within 1 business day, the 
 Medical Monitor contacts the Investigator, to provide 
guidance, discuss and agree an approach for the study subject’s follow-up and the continuous 
review of data. Subsequent to this initial contact the Investigator will:

Monitor the subject until liver biochemistry parameters and appropriate clinical 
symptoms and signs return to normal or baseline levels, or as long as medically 
indicated 

Investigate the etiology of the event and perform diagnostic investigations as 
discussed with the 
Medical Monitor

Complete the three Liver CRF Modules as information becomes available 

If at any time (in consultation with the 
Medical Monitor) the PHL case meets 
serious criteria, report it as an SAE using standard reporting procedures
5.
REVIEW AND ASSESSMENT OF POTENTIAL HY’S LAW 
CASES
The instructions in this Section should be followed for all cases where PHL criteria are met.
The 
Medical Monitor will contact the Investigator to carry out actions as described in 
Section 4. The 
Medical Monitor should contact the Investigator within 1 business day of 
seeing the PHL laboratory criteria in order to review available data and agree on whether there 
is an alternative explanation for meeting PHL criteria other than DILI caused by the IMP. The 
AstraZeneca Medical Science Director and Global Safety Physician will also be involved in 
this review together with other subject matter experts as appropriate and should be notified 
within 1 business day of the
 Medical Monitor having discussed data with the 
Investigator.
According to the outcome of the review and assessment, the Investigator will follow the 
instructions below.
If there is an agreed alternative explanation for the ALT or AST and TBL elevations, a 
determination of whether the alternative explanation is an AE will be made and subsequently 
whether the AE meets the criteria for a SAE:

If the alternative explanation is not an AE, record the alternative explanation on the 
appropriate CRF

If the alternative explanation is an AE/SAE, record the AE /SAE in the CRF 
accordingly and follow the AZ standard processes
If it is agreed that there is no explanation that would explain the ALT or AST and TBL 
elevations other than the IMP:

Clinical Study Protocol Appendix C
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
6(6)

Report an SAE (report term ‘Hy’s Law’) according to AstraZeneca standard 
processes. 

The ‘Medically Important’ serious criterion should be used if no other serious 
criteria apply

As there is no alternative explanation for the HL case, a causality assessment of 
‘related’ should be assigned.
If the 
medical monitor cannot contact the site within 2 weeks of the PHL laboratory 
values being available to clarify details of the case, then it is assumed that there is no 
alternative explanation until such time as an informed decision can be made:

Report an SAE (report term ‘Potential Hy’s Law’) applying serious criteria and 
causality assessment as per above

Continue follow-up and review according to agreed plan. Once the necessary 
supplementary information is obtained, repeat the review and assessment to 
determine whether HL criteria are met. Update the SAE report according to the 
outcome of the review
6.
REFERENCES
FDA Guidance for Industry (issued July 2009) ‘Drug-induced liver injury: Premarketing 
clinical evaluation’:
http://www fda.gov/downloads/Drugs/GuidanceComplianceRegulatoryInformation/Guidances/UCM174090.pdf

Clinical Study Protocol Appendix D
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix D
American College of Rheumatology Criteria for Systemic Lupus
Erythematosus Classification

Clinical Study Protocol Appendix D
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
2(3)
1997 Update of the 1982 American College of Rheumatology Revised Criteria for Classification of 
Systemic Lupus Erythematosus
Item
Definition
Malar rash
Fixed erythema, flat or raised, over the malar eminences, sparing the nasolabial 
folds
Discoid rash
Erythematous, raised patches with adherent keratotic scaling and follicular 
plugging: atrophic scarring may occur in older lesions
Photosensitivity 
Skin rash as a result of unusual reaction to sunlight, by patient history or physician 
observation
Oral ulcers 
Oral or nasopharyngeal ulceration, usually painless, observed by a physician
Nonerosive arthritis 
Involving 2 or more peripheral joints, characterized by tenderness, swelling, or 
effusion
Pleuritis or pericarditis
  a. Pleuritis--convincing history of pleuritic pain or rub heard by a physician or 
evidence of pleural effusion
OR
b. Pericarditis – documented by electrocardiogram or rub or evidence of 
pericardial effusion
Renal disorder
a. Persistent proteinuria > 0.5 gm per day or > 3+ if quantitation not performed
OR
b. Cellular casts--may be red cell, hemoglobin, granular, tubular, or mixed
Neurologic disorder
a. Seizures--in the absence of offending drugs or known metabolic derangement, 
eg, uremia, ketoacidosis, or electrolyte imbalance
OR
b. Psychosis--in the absence of offending drugs or known metabolic derangement, 
eg, uremia, ketoacidosis, or electrolyte imbalance
Hematologic disorder
a. Hemolytic anemia with reticulocytosis
OR
b. Leukopenia--< 4,000/mm3 on ≥ 2 occasions
OR
c. Lymphopenia--< 1,500/mm3 on ≥ 2 occasions
OR
d. Thrombocytopenia--< 100,000/mm3 in the absence of offending drugs
Immunologic disorder
a. Anti-DNA: antibody to native DNA in abnormal titer
OR
b. Anti-Sm: presence of antibody to Sm nuclear antigen
OR
c. Positive finding of antiphospholipid antibodies based on: 1) an abnormal serum 
level of IgG or IgM anticardiolipin antibodies; 2) a positive test result for lupus 
anticoagulant using a standard method; or 3) a false-positive test result for at 
least 6 months and confirmed by Treponema pallidum immobilization or 
fluorescent treponemal antibody absorption test.

Clinical Study Protocol Appendix D
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
3(3)
1997 Update of the 1982 American College of Rheumatology Revised Criteria for Classification of 
Systemic Lupus Erythematosus
Item
Definition
Positive antinuclear 
antibody  
An abnormal titer of antinuclear antibody by immunofluorescence or an 
equivalent assay at any point in time in the absence of drug.

Clinical Study Protocol Appendix E
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix E
Systemic Lupus Erythematosus Disease Activity Index 2000

Clinical Study Protocol Appendix E
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
2(2)

Clinical Study Protocol Appendix F
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix F
British Isles Lupus Assessment Group-2004

Clinical Study Protocol Appendix F
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
2(2)

Revised Clinical Study Protocol Appendix G
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
3
Date
01 February 2016
Protocol Dated
01 February 2016
Appendix G
Physician Global Assessment

Revised Clinical Study Protocol Appendix G
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 3
Date 01 February 2016
2(2)

Revised Clinical Study Protocol Appendix H
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
3
Date
01 February 2016
Protocol Dated
01 February 2016
Appendix H
System Lupus International Collaborating Clinics/American College of 
Rheumatology Damage Index

Clinical Study Protocol Appendix I
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix I
Cutaneous Lupus Erythematosus Disease Area and Severity Index

Clinical Study Protocol Appendix I
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
2(2)

Clinical Study Protocol Appendix J
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix J
Columbia Suicide Severity Rating Scale

Clinical Study Protocol Appendix J
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
3(7)

Clinical Study Protocol Appendix J
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
4(7)

Clinical Study Protocol Appendix J
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
6(7)

Clinical Study Protocol Appendix J
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
7(7)

Clinical Study Protocol Appendix K
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix K
Personal Health Questionnaire Depression Scale-8

Clinical Study Protocol Appendix K
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
2(3)

Clinical Study Protocol Appendix K
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
3(3)

Clinical Study Protocol Appendix L
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix L
Short Form 36 Version 2 (Acute Recall)

Clinical Study Protocol Appendix L
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
2(5)

Clinical Study Protocol Appendix L
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
3(5)

Clinical Study Protocol Appendix L
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
4(5)

Clinical Study Protocol Appendix L
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
5(5)

Clinical Study Protocol Appendix M
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix M
Functional Assessment of Chronic Illness Therapy-FATIGUE

Clinical Study Protocol Appendix M
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
2(2)

Clinical Study Protocol Appendix N
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix N
EuroQoL 5 Dimensions

Clinical Study Protocol Appendix N
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
2(2)

Clinical Study Protocol Appendix O
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix O
LupusQoL Questionnaire

Clinical Study Protocol Appendix P
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix P
Patient Global Assessment

Clinical Study Protocol Appendix P
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
2(2)

Clinical Study Protocol Appendix Q
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix Q
Work Productivity and Activity Impairment

Clinical Study Protocol Appendix Q
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
2(11)

Clinical Study Protocol Appendix Q
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
3(11)

Clinical Study Protocol Appendix Q
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
4(11)

Clinical Study Protocol Appendix Q
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
5(11)

Clinical Study Protocol Appendix Q
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
6(11)

Clinical Study Protocol Appendix Q
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
7(11)

Clinical Study Protocol Appendix Q
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
8(11)

Clinical Study Protocol Appendix Q
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
9(11)

Clinical Study Protocol Appendix Q
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
10(11)

Clinical Study Protocol Appendix Q
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
11(11)

Clinical Study Protocol Appendix R
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix R
Pain Numerical Rating Scale

Clinical Study Protocol Appendix R
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
2(2)

Revised Clinical Study Protocol Appendix S
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
3
Date
01 February 2016
Protocol Dated
01 February 2016
Appendix S
Medical Resource Use Questionnaire

Revised Clinical Study Protocol Appendix S
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 3
Date 01 February 2016
2(4)

Revised Clinical Study Protocol Appendix S
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 3
Date 01 February 2016
3(4)

Revised Clinical Study Protocol Appendix S
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 3
Date 01 February 2016
4(4)

Clinical Study Protocol Appendix T
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix T
Vasculitic Syndromes Excluded from the Study

Clinical Study Protocol Appendix T
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
2(2)
Subjects with a history or current diagnosis of the following vasculitis syndromes are 
excluded from participating in the study. Vasculitis due to SLE is allowed in the study.

Behçet’s Disease

Buerger’s Disease

Central Nervous System Vasculitis

Churg Strauss Syndrome

Cryoglobulinemia

Giant Cell Arteritis

Henoch-Schönlein Purpura

Kawasaki Disease

Microscopic Polyangiitis

Polyarteritis Nodosa

Polymyalgia Rheumatica

Takayasu’s Arteritis

Wegener’s Granulomatosis

Revised Clinical Study Protocol Appendix U
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
5
Date
18 May 2016
Protocol Dated
18 May 2016
Appendix U
Restricted Medications

Revised Clinical Study Protocol Appendix U
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 5
Date 18 May 2016
2(2)
Medications to be Discontinued Prior to signing ICF
Restricted medication
Discontinuation 
prior to signing 
ICF
Restricted medication
Discontinuation 
prior to signing 
ICF
Abatacept (CTLA 4 Ig)
24 weeks
Intravenous Globulin
4 weeks
Acthar® gel
6 weeks
Leflunomide
36 weeks
Adalimumab
12 weeks
Lenalidomide
8 weeks
Alefacept
12 weeks
Lupuzor (IPP-201101)
12 weeks
Anakinra
12 weeks
Memantine
4 weeks
Apremilast
4 weeks
Natalizumab
24 weeks
Atacicept (TACI-Ig)*
40 weeks
Obinutuzumab*
26 weeks
B cell depleter*
26 weeks
Ocrelizumab*
26 weeks
Belimumab
12 weeks
Ofatumumab*
26 weeks
Blisibimod (AMG 623)
8 weeks
Plasmapheresis
24 weeks
Certolizumab pegol
24 weeks
Retinoids
4 weeks
Cyclophosphamide
24 weeks
Rituximab*
26 weeks
Cyclosporine**
4 weeks
Sifalimumab (MEDI-545)
26 weeks
Cytokines (eg, IFN)
Washout Time
Similar to Study drug
26 weeks
Danazol
4 weeks
Sirolimus
4 weeks
Dapsone
4 weeks
Sulfasalazine
4 weeks
Eculizumab
12 weeks
Tabalumab
26 weeks
Efalizumab
12 weeks
Tacrolimus***
4 weeks
Epratuzumab
26 weeks
Thalidomide
8 weeks
Etanercept
4 weeks
Tocilizumab
12 weeks
Golimumab
12 weeks
Tofacitinib
4 weeks
Immunosuppressants
Washout Time
Topical Pimecrolimus
4 weeks
Infliximab
12 weeks
*     provided B cell count is normal at screening
**   cyclosporine eye drops are acceptable for use in the study
*** oral tacrolimus has a 4 week washout period and topical tacrolimus has a 2 week washout period

Clinical Study Protocol Appendix V
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix V
Oral Corticosteroid Guidance

Clinical Study Protocol Appendix V
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
2(2)
Examples of Equivalent Doses of Oral Prednisone
Oral Prednisone and 
Equivalents
Equivalent Dose
Oral Prednisone 
7.5 mg
10 mg
20 mg
30 mg
40 mg
Cortisone
37.5 mg
50 mg
100 mg
150 mg
200 mg
Hydrocortisone
30 mg
40 mg
80 mg
120 mg
160 mg
Methylprednisolone
6 mg
8 mg
16 mg
24 mg
32 mg
Prednisolone
7.5 mg
10 mg
20 mg
30 mg
40 mg
Triamcinolone
6 mg
8 mg
16 mg
24 mg
32 mg
Example of OCS Tapering Schedule
Time point
Initial Dose of Oral Prednisone or Equivalent
40 mg
30 mg
20 mg
10 mg*
Week 8
35 mg
27.5 mg
17.5 mg
10 mg
Week 12 
30 mg
25 mg
15 mg
10 mg
Week 16 
25 mg
20 mg
10 mg
10 mg
Week 20 
15 mg
15 mg
10 mg
7.5 mg
Week 24 
10 mg
10 mg
7.5 mg
≤7.5 mg
Week 28 
7.5 mg
7.5 mg
≤7.5 mg
≤7.5 mg
*
Note: subjects on OCS doses equivalent to 10 mg prednisone/day may tolerate tapering by 1 mg/day per 
visit rather than an abrupt drop from 10 mg/day to 7.5 mg/day. The stepwise tapering of OCS dose should 
be performed at the discretion of the Investigator.

Clinical Study Protocol Appendix W
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix W
General Guidance for Determination of Major Surgery

Clinical Study Protocol Appendix W
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
2(2)
The goal of this guidance is to maximize the benefit/risk for each subject entering this study. 
An important aspect to this goal is taking into account all relevant history, including recent 
surgeries and/or injuries that could influence the safety of the subject potentially being 
exposed to an additional immunomodulatory medication or could bias the efficacy endpoints 
of the trial.
Given the advancement and availability of surgical techniques, major surgery is in the 
judgment of the Investigator and his/her evaluation of the following criteria, regardless of the 
specific surgical procedure:
1.
Has the subject completely recovered (mentally, emotionally, and physically) from 
the surgery and is not receiving additional medications related to the prior surgery 
(ie, antibiotics)?
2.
Has the subject completed all follow-up visits related to the surgery, including 
ancillary services such as physical and/or occupational therapy?
3.
Has the subject resumed all of their prior activities?
4.
Has the subject returned to his/her baseline medications for SLE and non-SLE 
indications?

Clinical Study Protocol Appendix X
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix X
Guidance for Abnormal Pap Smear Results

Clinical Study Protocol Appendix X
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
2(2)
Pap Smear Result
Abbreviation
Also Known As
Suggested Action
Atypical squamous cells–
undetermined 
significance
ASC–US
—
Permitted to enter study
Atypical squamous cells–
cannot exclude HSIL
ASC–H
—
Permitted to enter study
Atypical glandular cells
AGC
—
Permitted to enter study
Low-grade squamous 
intraepithelial lesion
LSIL
Mild dysplasia
Cervical intraepithelial 
neoplasia–1 (CIN–1)
Permitted to enter study
High-grade squamous 
intraepithelial lesion
HSIL
Moderate dysplasia
CIN-2 / CIN II
Permitted to enter study
High-grade squamous 
intraepithelial lesion
HSIL
CIN–3 / CIN III
Carcinoma in situ (CIS)
Exclude/discontinue subject
Endocervical 
adenocarcinoma in situ
AIS
—
Exclude/discontinue subject

Clinical Study Protocol Appendix Y
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
2
Date
09 April 2015
Protocol Dated
09 April 2015
Appendix Y
Anaphylaxis

Clinical Study Protocol Appendix Y
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
2(6)
In adults, anaphylaxis is highly likely when any 1 of the following 3 criteria is fulfilled:
1.
Acute onset of an illness (minutes to several hours) with involvement of the skin, 
mucosal tissue, or both (eg, generalised hives, pruritus or flushing, swollen lips, 
tongue and/or uvula) 
AND AT LEAST ONE OF THE FOLLOWING:

Respiratory compromise (eg, dyspnoea, wheeze-bronchospasm, stridor, reduced 
peak expiratory flow, hypoxaemia)

Reduced BP (see number 3 below for definition) or associated symptoms of end-
organ dysfunction (eg, hypotonia [collapse], syncope, incontinence)
2.
Two or more of the following that occur rapidly after exposure to a likely allergen 
for that subject (minutes to several hours): 

Involvement of the skin-mucosal tissue (eg, generalised hives, itch, flush, swollen 
lips, tongue and/or uvula)

Respiratory compromise (eg, dyspnoea, wheeze-bronchospasm, stridor, reduced 
peak expiratory flow, hypoxaemia)

Reduced BP (see number 3 below for definition) or associated symptoms (eg, 
hypotonia [collapse], syncope, incontinence)

Persistent gastrointestinal symptoms (eg, crampy abdominal pain, vomiting)
3.
Reduced BP after exposure to known allergen for that subject (minutes to several 
hours); for adults a systolic BP of less than 90 mm Hg or greater than 30% decrease 
from that person’s baseline BP (taken at or immediately prior to start of the 
infusion), whichever BP is lower.
The following definitions are provided for the purposes of this study:
Hypersensitivity reaction: an acute onset of an illness with involvement of the skin, mucosal 
tissue, or both during infusion of investigational product (but does not meet the definition of 
anaphylaxis described above).
Infusion-related reaction: any other reaction occurring during infusion of investigational 
product or felt to be temporally related to the infusion within 24 hours of investigational 
product administration.
To assist with the mitigation of these AEs, see Table 1, which categorizes reactions by 
severity of symptoms, proposes severity-specific treatment and offers guidance on 
management of investigational product. Final treatment is at the discretion of the Investigator 
and should reflect local SOC.

Clinical Study Protocol Appendix Y
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
3(6)
Table 1
An approach to management of anaphylactic, hypersensitivity, and infusion-related reactions
Severity of symptoms
Treatment
Investigational product
Mild reactions (infusion and 
hypersensitivity)
Mild infusion-related reactions such 
as headache, nausea, non-pruritic 
rash, or mild hypersensitivity 
reactions including localised 
cutaneous reactions such as mild 
pruritus, flushing, rash, dizziness, 
headache, ≤20 mmHg change in 
systolic BP from pre-infusion 
measurement
Evaluate subject, including close monitoring of vital 
signs 
At the discretion of the Investigator, treat subject, for 
example, with:
-
Normal saline (~500 to 1000 mL/hour IV) 
and/or
-
Diphenhydramine 50 mg IV or equivalent and/or
-
Acetaminophen 500 to 650 mg or equivalent 
dose of paracetamol and/or
-
Topical antihistamines and/or low-potency 
topical corticosteroid preparations and/or
-
Anti-nausea medication, as needed
Stop investigational product infusion 
immediately
Option 1: do not resume investigational product 
infusion; OR at the discretion of the 
Investigator, resume current investigational 
product infusion under observation and 
complete investigational product infusion at no 
more than half the planned infusion rate
Option 2: discontinue any further 
administration of investigational product; OR at 
the discretion of the Investigator, continue 
future investigational product administrations 
and consider slowing infusion rate and 
pretreating subject 1.5 to 0.5 hours prior to 
investigational product administration, for 
example with:
-
Diphenhydramine 50 mg IV or equivalent
-
Acetaminophen 500 to 650 mg or 
equivalent dose of paracetamol
Moderate reactions (infusion)
Infusion-related reaction such as 
those listed above under mild 
reactions but excluding moderate 
hypersensitivity reactions (see 
below)
Evaluate subject, including close monitoring of vital 
signs 
Treat subject, for example, with:
-
Normal saline (~500 to 1000 mL/hour IV) 
and/or
-
Diphenhydramine 50 mg IV or equivalent and/or
-
Acetaminophen 500 to 650 mg or equivalent 
dose of paracetamol and/or
-
Anti-nausea and/or antiemetic intramuscular, as 
needed
Stop investigational product infusion 
immediately
Option 1: do not resume investigational product 
infusion; OR based on risk/benefit evaluation, 
at the discretion of the Investigator, resume 
current investigational product infusion under 
observation and at no more than half the 
planned infusion rate after treatment of current 
signs and symptoms as suggested (eg, normal 
saline and/or Tylenol and/or topical 
antihistamines)

Clinical Study Protocol Appendix Y
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
4(6)
Severity of symptoms
Treatment
Investigational product
Additional Options for Future Administration 
of investigational product
Discontinue any further administrations of 
investigational product; OR
Further investigational product infusions, at the 
discretion of the Investigator, continue 
investigational product administration and 
consider slowing infusion rate and pretreating 
subject 0.5 to 1.5 hours prior to investigational 
product administration, for example with:
-
Diphenhydramine 50 mg IV or equivalent
-
Acetaminophen 500 to 650 mg or 
equivalent dose of paracetamol
-
Anti-nausea and/or antiemetic by mouth
Prior to next administration of investigational 
product administration, consider initiating at a 
slower infusion rate and pretreating subject 0.5 
to 1.5 hours prior to next administration of 
investigational product, for example, with
-
Diphenhydramine 50 mg IV or equivalent
-
Acetaminophen 500 to 650 mg or 
equivalent dose of paracetamol
If moderate event recurs in the same subject, 
discontinue further investigational product 
administration

Clinical Study Protocol Appendix Y
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
5(6)
Severity of symptoms
Treatment
Investigational product
Moderate hypersensitivity 
reactions
Infusion related reactions which 
may include generalised rash or 
urticaria, palpitations, chest 
discomfort, shortness of breath, 
hypo- or hypertension with 
>20 mmHg change in systolic BP 
from pre-infusion measurement
Evaluate subject, including close monitoring of vital 
signs 
Treat subject, for example, with:
-
Normal saline (~500 to 1000 mL/hour IV) 
and/or
-
Diphenhydramine 50 mg IV or equivalent and/or
-
Acetaminophen 500 to 650 mg or equivalent 
dose of paracetamol and/or
-
IV corticosteroids, such as hydrocortisone 
100 mg or methylprednisolone 20 to 40 mg
Stop investigational product infusion 
immediately
DO NOT resume current infusion
Discontinue any further administrations of 
investigational product
Consider need for additional oral antihistamine 
administration or oral corticosteroid 
administration to prevent reoccurrence of 
symptoms over subsequent 2 to 3 days

Clinical Study Protocol Appendix Y
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Edition Number 2
Date 09 April 2015
6(6)
Severity of symptoms
Treatment
Investigational product
Severe
Above plus fever with rigors, hypo-
or hypertension with ≥40 mmHg 
change in systolic BP, signs of end 
organ dysfunction (eg, symptomatic 
hypotension such as hypotonia, 
syncope, incontinence, seizure) from 
pre-infusion measurement, or 
wheezing, angioedema, or stridor
OR
Life-threatening
Defined as a reaction that is 
life-threatening and requires pressor 
and/or ventilator support or shock 
associated with acidemia and 
impairing vital organ function due to 
tissue hypoperfusion
Evaluate subject, including close monitoring of vital 
signs
Maintain airway, oxygen if available
Treat subject immediately, for example with:
-
Normal saline (~500 to 1000 mL/hour IV)
-
Epinephrine for bronchospasm, hypotension 
unresponsive to IV fluids, or angioedema. Dose 
and route as per local SOC, example, 
epinephrine 1:1000, 0.5 to 1.0 mL administered 
SC for mild cases and intramuscular for more 
severe cases
-
IV corticosteroids, such as hydrocortisone 
100 mg or methylprednisolone 20 to 40 mg
-
Diphenhydramine 50 mg IV or equivalent
-
Acetaminophen 500 to 650 mg or equivalent 
dose of paracetamol
Call emergency medical transport for transport to 
emergency hospital based on judgment of the 
Investigator
Grade 3 wheezing, hypotension or angioedema is 
unresponsive to single dose of epinephrine
Grade 4 event
At the discretion of the Investigator
Stop investigational product infusion 
immediately
Do not resume current infusion 
Permanently discontinue investigational 
product administration
Consider need for additional oral antihistamine 
administration or oral corticosteroid 
administration to prevent reoccurrence of 
symptoms over subsequent 2 to 3 days

Revised Clinical Study Protocol Appendix Z
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
5
Date
18 May 2016
Protocol Dated
18 May 2016
Appendix Z
Modified Flare Index

Clinical Study Protocol Amendment
Amendment Number
04
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Date
18 May 2016
Protocol Dated
18 May 2016
A Multicentre, Randomised, Double-blind, Placebo-controlled, Phase 3 
Study Evaluating the Efficacy and Safety of Two Doses of Anifrolumab in 
Adult Subjects with Active Systemic Lupus Erythematosus
This submission /document contains trade secrets and confidential commercial information, disclosure of which 
is prohibited without providing advance notice to AstraZeneca and opportunity to object.
Sponsor:
AstraZeneca AB, 151 85 Södertälje, Sweden
Centres affected by the Amendment:
All sites participating in the study.
Note: in addition to the changes listed below, minor text/style changes were made.
Sections of protocol affected:
3.1 Inclusion criteria; 3.3.2 Concomitant medications for Systemic Lupus Erythematosus 
standard of care during the study
Previous text:
3.1 Inclusion criteria
7.
Currently receiving at least 1 of the following*:
(a)
A dose of oral prednisone (≤40 mg/day) or prednisone equivalent dose 
for a minimum of 2 weeks prior to signing of the ICF. The dose of oral 
prednisone or prednisone equivalent the subject is taking must be stable 
for a minimum of 2 weeks prior to Week 0 (Day 1)
(b)
Any of the following medications administered for a minimum of 

Clinical Study Protocol Amendment 04
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Date 18 May 2016
2(17)
12 weeks prior to signing the informed consent, and at a stable dose for 
a minimum of 8 weeks prior to signing the informed consent and 
until Day 1:
(i)
Azathioprine ≤200 mg/day
(ii)
Antimalarial (eg, chloroquine, hydroxychloroquine, 
quinacrine)
(iii)
Mycophenolate mofetil ≤2 g/day or mycophenolic acid 
≤1.44 g/day
(iv)
Oral, subcutaneous (SC), or intramuscular methotrexate 
≤25 mg/week
(v)
Mizoribine ≤150 mg/day
*If receiving oral prednisone (or equivalent) and another agent, the dose duration for 
both (a) and (b) must be met
15.
Meets all of the following TB criteria:
(a)
No history of latent or active TB prior to Screening, with the exception 
of latent TB with documented completion of appropriate treatment
(b)
No signs or symptoms suggestive of active TB from medical history or 
physical examination
(c)
No recent contact with a person with active TB OR if there has been 
such contact, referral to a physician specialising in TB to undergo 
additional evaluation prior to randomisation (documented appropriately 
in source), and, if warranted, receipt of appropriate treatment for latent 
TB at or before the first administration of investigational product
(d)
Must meet 1 of the following criteria:
(i)
Negative QuantiFERON-TB Gold [QFT-G] test result for 
TB obtained from the study Central Laboratory within 
3 months prior to randomisation OR
(ii)
Positive QFT-G test result for TB obtained during the 
Screening Period from the study Central Laboratory for 
which active TB has been ruled out and appropriate 
treatment for latent TB has been initiated prior to the first 

Clinical Study Protocol Amendment 04
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Date 18 May 2016
3(17)
investigational product administration OR
(iii)
Indeterminate (confirmed on retest) QFT-G test result for 
TB obtained during the Screening Period from the study 
Central Laboratory with ongoing QFT-G testing for TB 
according to the Study Plan 
(e)
A chest radiograph with no evidence of current active infection (eg, TB) 
or old active TB, malignancy, or clinically significant abnormalities 
(unless due to SLE) obtained during the Screening Period or anytime 
within 12 weeks prior to signing of the informed consent
17.
OCS dose stable for at least 2 weeks at Randomisation (Day 1)
18.
Stable SLE SOC treatment at Randomisation (Day 1) (see Section 3.3.2)
3.3.2 Concomitant medications for Systemic Lupus Erythematosus standard of care during the 
study
Permitted SOC SLE
Limitations of Use
OCS
-
Oral prednisone or equivalent up to ≤40 mg/day is permitted 
from at least 2 weeks prior to signing of the informed 
consent. The dose of oral prednisone must remain stable at least 
2 weeks prior to Day 1
-
Subjects with increased SLE disease activity may receive 1 
permitted burst and taper of OCS between Day 1 and Week 12. 
Additional details on burst and taper for SLE and non-SLE (eg, 
asthma or COPD exacerbation) disease activity are provided in 
Sections 3.3.2.1 to 3.3.2.4
Revised text:
3.1 Inclusion criteria
7.
Currently receiving at least 1 of the following*:
(a)
Where prednisone is the single standard of care medication (ie, the 
subject is not concurrently receiving any medication listed in 
inclusion criterion 7(c)), a dose of oral prednisone ≥7.5 mg/day but 
≤40 mg/day (or prednisone equivalent**) for a minimum of 8 weeks 
prior to Day 1. In addition, the dose of oral prednisone or 
prednisone equivalent the subject is taking must be stable for a 
minimum of 2 weeks prior to randomisation
(b)
Where prednisone is not the single standard of care medication (ie, 

Clinical Study Protocol Amendment 04
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Date 18 May 2016
4(17)
the subject is concurrently receiving at least one medication listed in 
inclusion criterion 7(c)), a dose of oral prednisone ≤40 mg/day (or 
prednisone equivalent**) for a minimum of 2 weeks prior to signing of 
the ICF. In addition, the dose of oral prednisone or prednisone 
equivalent the subject is taking must be stable for a minimum of 2 weeks 
prior to randomisation
(c)
Any of the following medications administered for a minimum of 
12 weeks prior to signing the informed consent, and at a stable dose for 
a minimum of 8 weeks prior to signing the informed consent 
through Day 1:
(i)
Azathioprine ≤200 mg/day
(ii)
Antimalarial (eg, chloroquine, hydroxychloroquine, 
quinacrine)
(iii)
Mycophenolate mofetil ≤2 g/day or mycophenolic acid 
≤1.44 g/day
(iv)
Oral, subcutaneous (SC), or intramuscular methotrexate 
≤25 mg/week
(v)
Mizoribine ≤150 mg/day
*If receiving oral prednisone (or equivalent) and an additional agent, the dose 
duration and maximum allowable dosages for both (b) and (c) must be met
**See Appendix V for examples of prednisone equivalency
15.
Meets all of the following TB criteria:
(a)
No history of active TB prior to any Screening visit
(b)
No history of latent TB prior to initial Screening visit, with the 
exception of latent TB with documented completion of appropriate 
treatment
Note: Subjects with no history of latent TB prior to the initial 
Screening visit, but who are diagnosed with latent TB during 
screening, may be considered eligible if appropriate treatment is 
initiated prior to randomisation. Such subjects may be re-screened 
if necessary to allow for local guidelines on latent TB treatment 
initiation.

Clinical Study Protocol Amendment 04
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Date 18 May 2016
5(17)
(c)
No signs or symptoms suggestive of active TB from medical history or 
physical examination
(d)
No recent contact with a person with active TB OR if there has been 
such contact, referral to a physician specialising in TB to undergo 
additional evaluation prior to randomisation (documented appropriately 
in source), and, if warranted, receipt of appropriate treatment for latent 
TB at or before the first administration of investigational product
(e)
Must meet 1 of the following criteria:
(i)
Negative QuantiFERON-TB Gold [QFT-G] test result for 
TB obtained from the study Central Laboratory within 
3 months prior to randomisation OR
(ii)
Positive QFT-G test result for TB obtained during the 
Screening Period from the study Central Laboratory for 
which active TB has been ruled out and appropriate 
treatment for latent TB has been initiated prior to the first 
investigational product administration OR
(iii)
Indeterminate (confirmed on retest) QFT-G test result for 
TB obtained during the Screening Period from the study 
Central Laboratory with ongoing QFT-G testing for TB 
according to the Study Plan 
(f)
A chest radiograph with no evidence of current active infection (eg, TB) 
or old active TB, malignancy, or clinically significant abnormalities 
(unless due to SLE) obtained during the Screening Period or anytime 
within 12 weeks prior to signing of the informed consent
17.
OCS dose stable for at least 2 weeks prior to randomisation
18.
Stable SLE SOC treatment (see Section 3.3.2) at the time of randomisation

Clinical Study Protocol Amendment 04
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Date 18 May 2016
6(17)
3.3.2 Concomitant medications for Systemic Lupus Erythematosus standard of care during the 
study
Permitted SOC SLE
Limitations of Use
OCS
-
Oral prednisone or equivalent up to ≤40 mg/day is permitted 
from at least 2 weeks prior to signing the informed consent. 
The dose of oral prednisone must remain stable at least 2 weeks 
prior to randomisation
-
Where prednisone is the single standard of care medication 
(ie, the subject is not concurrently receiving any medication 
listed in inclusion criterion 7(c)), a dose of oral prednisone 
≥7.5 mg/day but ≤40 mg/day (or prednisone equivalent) for a 
minimum of 8 weeks prior to Day 1 is required
-
Subjects with increased SLE disease activity may receive 1 
permitted burst and taper of OCS between Day 1 and Week 12. 
Additional details on burst and taper for SLE and non-SLE (eg, 
asthma or COPD exacerbation) disease activity are provided in 
Sections 3.3.2.1 to 3.3.2.4
Reason for Amendment: 
The criteria for inclusion based on concomitant medication and tuberculosis status were 
clarified. These changes were made to provide further guidance to the Investigator.
Persons who initiated the Amendment:
AstraZeneca
Section of protocol affected:
3.2.2 Exclusion criteria related to concomitant medications; 3.3.1.2 Restricted medications; 4 
Study plan and timing of procedures, Table 2 Study plan detailing the procedures at screening
Previous text:
3.2.2 Exclusion criteria related to concomitant medications
9.
Receipt of any of the following:
(a)
Any new oral prednisone therapy (or equivalent) anytime from 2 weeks 
prior to signing of the ICF through Day 1 or any change in current oral 
prednisone dose (or equivalent) any time from 2 weeks prior to Day 1 
(see Appendix V for examples of prednisone equivalency) 
(b)
Any new dose of the following anytime in the 12 weeks prior to signing 
the ICF or change in the current dose anytime in the 8 weeks prior to 
signing the ICF through Day 1: azathioprine; any antimalarial (eg, 

Clinical Study Protocol Amendment 04
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Date 18 May 2016
7(17)
chloroquine, hydroxychloroquine, quinacrine); mycophenolate 
mofetil/mycophenolic acid; oral, SC, or intramuscular methotrexate
13.
Receipt of B cell-depleting therapy (including but not limited to, ocrelizumab, 
ofatumumab, atacicept, obinutuzumab, or rituximab) 

≤26 weeks prior to signing the ICF; ≤40 weeks for atacicept
(see Appendix U)

or if therapy was administered >26 weeks ago (40 weeks for atacicept), 
absolute B cell less than the lower limit of normal or baseline value prior to 
receipt of B cell-depleting therapy (whichever is lower) 
14.
Receipt of epratuzumab, belimumab, or tabalumab ≤12 weeks prior to signing the 
ICF
3.3.1.2 Restricted medications
(o)
Other immunosuppressants including but not limited to calcineurin inhibitors (eg, 
cyclosporine, tacrolimus [including topical]) or leflunomide. 
4 Study plan and timing of procedures, Table 2 Study plan detailing the procedures at 
screening
Footnote ‘c’:
Receipt of B cell-depleting therapy (including but not limited to, ocrelizumab, ofatumumab, 
atacicept, obinutuzumab, or rituximab) ≤26 weeks prior to signing the ICF (≤40 weeks for 
atacicept [see Appendix U]) and if therapy was administered >26 weeks ago (40 weeks for 
atacicept), absolute B cell less than the lower limit of normal or baseline value prior to receipt 
of B cell-depleting therapy (whichever is lower).
Revised text:
3.2.2 Exclusion criteria related to concomitant medications
9.
Receipt of any of the following:
(a)
Where prednisone is the single standard of care medication (ie, the 
subject is not concurrently receiving any medication listed in 
inclusion criterion 7(c)), any addition of a new oral prednisone 
therapy (or equivalent) any time in the 8 weeks prior to Day 1, OR 
any change in/ discontinuation of current oral prednisone dose (or 
equivalent) anytime within the 2 weeks prior to randomisation (see 
Appendix V for examples of prednisone equivalency)
(b)
Where prednisone is not the single standard of care medication (ie, 

Clinical Study Protocol Amendment 04
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Date 18 May 2016
8(17)
the subject is concurrently receiving at least one medication listed in 
inclusion criterion 7(c)): 
(i)
Any addition of a new oral prednisone therapy (or 
equivalent) any time from 2 weeks prior to signing of the 
informed consent form through Day 1, OR any change 
in/ discontinuation of current oral prednisone dose (or 
equivalent) anytime within the 2 weeks prior to 
randomisation (see Appendix V for examples of 
prednisone equivalency)
(ii)
Any addition of a new dose of any of the following 
anytime in the 12 weeks prior to signing of the informed 
consent through Day 1, or change in/ discontinuation of 
current dose anytime in the 8 weeks prior to signing of 
the informed consent through Day 1: azathioprine; any 
antimalarial (eg, chloroquine, hydroxychloroquine, 
quinacrine); mycophenolate mofetil/mycophenolic acid; 
oral, SC, or intramuscular methotrexate; mizoribine
10.
Receipt of any of the following:
(a)
Azathioprine >200 mg/day
(b)
Mycophenolate mofetil >2 g/day or mycophenolic acid >1.44 g/day
(c)
Oral, SC, or intramuscular methotrexate >25 mg/week
(d)
Mizoribine >150 mg/day
(e)
Any change in route of administration of oral, SC, or intramuscular 
methotrexate anytime within the 8 weeks prior to signing of the 
informed consent through Day 1
14.
Receipt of B cell-depleting therapy (including but not limited to, ocrelizumab, 
ofatumumab, atacicept, obinutuzumab, or rituximab) 

<26 weeks prior to signing the ICF; <40 weeks for atacicept
(see Appendix U)

or if therapy was administered ≥26 weeks ago (40 weeks for atacicept), 
absolute B cell less than the lower limit of normal or baseline value prior to 
receipt of B cell-depleting therapy (whichever is lower) 
15.
Receipt of epratuzumab or tabalumab <26 weeks prior to signing the ICF, or 
belimumab <12 weeks prior to signing the ICF

Clinical Study Protocol Amendment 04
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Date 18 May 2016
9(17)
3.3.1.2 Restricted medications
(o)
Other immunosuppressants including but not limited to calcineurin inhibitors (eg, 
cyclosporine, tacrolimus [including topical]) or leflunomide. 
Note: Cyclosporine eye drops are acceptable for use in the study.
4 Study plan and timing of procedures, Table 2 Study plan detailing the procedures at 
screening
Footnote ‘c’:
Receipt of B cell-depleting therapy (including but not limited to, ocrelizumab, ofatumumab, 
atacicept, obinutuzumab, or rituximab) <26 weeks prior to signing the ICF (<40 weeks for 
atacicept [see Appendix U]) and if therapy was administered ≥26 weeks ago (40 weeks for 
atacicept), absolute B cell less than the lower limit of normal or baseline value prior to receipt 
of B cell-depleting therapy (whichever is lower).
Reason for Amendment: 
The criteria for exclusion based on concomitant medications were clarified, and a minor 
addition was made allowing the concomitant use of cyclosporine eye drops (to match with 
Appendix U). These changes were made to provide further guidance to the Investigator.
Persons who initiated the Amendment:
AstraZeneca
Sections of protocol affected:
List of abbreviations and definition of terms; 3.2.4 Exclusion criteria related to infection and 
malignancy risk factors; 4 Study plan and timing of procedures, Table 2 Study plan detailing 
the procedures at screening; 4 Study plan and timing of procedures, Table 3 Study plan 
detailing the procedures during the Treatment Period (double-blind period); 5.3.10 Clinical 
laboratory tests, Table 5 Clinical laboratory tests
Previous text:
3.2.4 Exclusion criteria related to infection and malignancy risk factors
26.
Known history of a primary immunodeficiency, splenectomy, or any underlying 
condition that predisposes the subject to infection, or a positive result for human 
immunodeficiency virus (HIV) infection confirmed by central laboratory at 
screening
27.
Confirmed positive test for hepatitis B serology for:

Clinical Study Protocol Amendment 04
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Date 18 May 2016
10(17)
(a)
Hepatitis B surface antigen, OR 
(b)
Hepatitis B core antibody (HBcAb) AND hepatitis B virus (HBV) DNA 
detected by reflex testing by the central laboratory at screening 
Note: Subjects with HBcAb positivity at screening will be tested every 3 months for HBV 
DNA. To remain eligible in the study, subject HBV DNA levels must remain below the lower 
limit of quantitation (LLOQ) as per the central laboratory.
31.
Opportunistic infection requiring hospitalisation or parenteral antimicrobial 
treatment within 3 years of randomisation 
4 Study plan and timing of procedures, Table 2 Study plan detailing the procedures at 
screening
Footnote ‘b’:
Redraw for ANA/anti-dsDNA, or IFN test can be done within the 30-day screening window, 
however, results must be available within the 30-day screening window for subjects to be 
randomised.
4 Study plan and timing of procedures, Table 3 Study plan detailing the procedures during the 
Treatment Period (double-blind period)
Footnote ‘f’:
Subjects with HBcAb positivity at screening will be tested every 3 months for HBV DNA. To 
remain eligible in the study, subject HBV DNA levels must remain below the LLOQ as per 
the central laboratory.
Revised text:
List of abbreviations and definition of terms
A new abbreviation was added:
HBsAg
Hepatitis B surface antigen
3.2.4 Exclusion criteria related to infection and malignancy risk factors
27.
Known history of a primary immunodeficiency, splenectomy, or any underlying 
condition that predisposes the subject to infection, or a positive result for human 
immunodeficiency virus (HIV) infection confirmed by central laboratory at 
screening. Subjects refusing HIV testing during the screening period will not be 
eligible for study participation
28.
Confirmed positive test for hepatitis B serology for:

Clinical Study Protocol Amendment 04
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Date 18 May 2016
11(17)
(a)
Hepatitis B surface antigen (HBsAg), OR 
(b)
Hepatitis B core antibody (HBcAb) AND hepatitis B virus (HBV) DNA 
detected above the lower limit of quantitation (LLOQ) by reflex 
testing by the central laboratory at screening 
Note: Subjects who are HBcAb positive at screening will be tested every 3 months for HBV 
DNA. To remain eligible for the study, the subject’s HBV DNA levels must remain below 
the LLOQ as per the central laboratory.
32.
Opportunistic infection requiring hospitalisation or intravenous antimicrobial 
treatment within 3 years of randomisation
4 Study plan and timing of procedures, Table 2 Study plan detailing the procedures at 
screening
Footnote ‘b’:
Redraw for ANA/anti-dsDNA, or IFN test can be done within the 30-day screening window, 
however, results needed to determine eligibility and stratification must be available within 
the 30-day screening window for subjects to be randomised.
4 Study plan and timing of procedures, Table 2 Study plan detailing the procedures at 
screening
A new footnote ‘g’ was added:
g
Subjects within the treatment or follow-up period at the time of amendment 4 
approval will undergo HIV testing at the time of amendment 4 ICF signature.
4 Study plan and timing of procedures, Table 3 Study plan detailing the procedures during the 
Treatment Period (double-blind period)
Footnote ‘f’:
Subjects who are HBcAb positive at screening will be tested every 3 months for HBV DNA.
To remain eligible for the study, the subject’s HBV DNA levels must remain below the 
LLOQ as per the central laboratory.
5.3.10 Clinical laboratory tests, Table 5 Clinical laboratory tests
A new footnote ‘**’ was added:
**
Subjects within the treatment or follow-up period at the time of amendment 4 
approval will undergo HIV testing at the time of amendment 4 ICF signature.

Clinical Study Protocol Amendment 04
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Date 18 May 2016
12(17)
Reason for Amendment: 
The criteria for performing HIV testing at screening were clarified, along with exclusion 
based on antimicrobial treatment and hepatitis B serology. It was also further clarified that 
ANA/anti-dsDNA, or IFN test results needed to determine eligibility and stratification must be 
available within the 30-day screening window for subjects to be randomised. These changes
were made to provide further guidance to the Investigator.
Persons who initiated the Amendment:
AstraZeneca
Section of protocol affected:
4.4 Follow-up Period
Previous text:
Procedures will be performed according to the Follow-up Period Study Plan (Table 4). 
Subjects who complete the Week 52 visit may be eligible to participate in a LTE study. 
Subjects who complete the double-blind treatment period will have follow-up visits at Week 
56 and Week 60, unless they enrol in the LTE study. Subjects who are withdrawn from the 
study, and do not agree to complete the 52-week study period, should complete the early 
discontinuation visit (Week 52 procedures), and be followed 8 and 12 weeks after the last 
administration of investigational product by completing the Follow up Visit 1 and 2 
assessments (see Section 3.7).
Revised text:
Procedures will be performed according to the Follow-up Period Study Plan (Table 4). 
Subjects who complete the Week 52 visit may be eligible to participate in a LTE study. 
Subjects who complete the double-blind treatment period will have follow-up visits at Week 
56 and Week 60, unless they enrol in the LTE study. Subjects who are withdrawn from the 
study, and do not agree to complete the 52-week study period, should complete the early 
discontinuation visit (Week 52 procedures) within 4 weeks of the last dose of investigational 
product, and be followed 8 and 12 weeks after the EDV visit by completing the Follow up 
Visit 1 and 2 assessments (see Section 3.7).
Reason for Amendment: 
The timing of the early discontinuation visit was clarified. This change was made to provide 
further guidance to the Investigator.

Clinical Study Protocol Amendment 04
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Date 18 May 2016
13(17)
Persons who initiated the Amendment:
AstraZeneca
Section of protocol affected:
5.3.8.2 Tuberculosis results from screening evaluations
Previous text:

If the screening QFT-G test is positive at screening but the subject is not newly 
positive, the subject must have been diagnosed with latent TB and must have 
documentation confirming completion of appropriate treatment.
Revised text:

If the screening QFT-G test is positive at the initial Screening visit, but the subject 
is not newly positive as of the initial Screening visit, the subject must have been 
diagnosed with latent TB and must have documentation confirming completion of 
appropriate treatment. Subjects with no history of latent TB prior to the initial 
Screening visit, but who are diagnosed with latent TB during screening, may 
be considered eligible if appropriate treatment is initiated prior to 
randomisation. Such subjects may be re-screened if necessary to allow for local 
guidelines on latent TB treatment initiation.
Reason for Amendment: 
The screening requirements for a positive QFT-G test at screening were clarified. This change 
was made to provide further guidance to the Investigator.
Persons who initiated the Amendment:
AstraZeneca
Section of protocol affected:
7.7 Post study access to study treatment
Previous text:
Following evaluation at Week 52, subjects will either be followed for a 12-week Follow-up 
Period or continue in a LTE study that will continue until anifrolumab has been approved for 
use on the market or until development has been discontinued by the Sponsor.
Revised text:
Upon evaluation at Week 52, subjects will either be followed for a 12-week Follow-up 
Period, or transition to an LTE study (if eligible) that will continue for approximately 3 
years after the completion of the Week 52 visit.

Clinical Study Protocol Amendment 04
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Date 18 May 2016
14(17)
Reason for Amendment: 
The duration of the long-term extension (LTE) study was clarified. This change was made to
provide further guidance to the Investigator.
Persons who initiated the Amendment:
AstraZeneca

Clinical Study Protocol Amendment 04
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Date 18 May 2016
15(17)
Section of protocol affected:
Appendix U Restricted Medications
Previous Text:
Medications to be Discontinued Prior to signing ICF
Restricted medication
Discontinuation 
prior to signing 
ICF
Restricted medication
Discontinuation 
prior to signing 
ICF
Abatacept (CTLA 4 Ig)
24 weeks
Intravenous Globulin
4 weeks
Acthar® gel
6 weeks
Leflunomide
36 weeks
Adalimumab
12 weeks
Lenalidomide
8 weeks
Alefacept
12 weeks
Lupuzor (IPP-201101)
12 weeks
Anakinra
12 weeks
Memantine
4 weeks
Apremilast
4 weeks
Natalizumab
24 weeks
Atacicept (TACI-Ig)*
40 weeks
Obinutuzumab*
26 weeks
B cell depleter*
26 weeks
Ocrelizumab*
26 weeks
Belimumab
12 weeks
Ofatumumab*
26 weeks
Blisibimod (AMG 623)
8 weeks
Plasmapheresis
24 weeks
Certolizumab pegol
24 weeks
Retinoids
4 weeks
Cyclophosphamide
24 weeks
Rituximab*
26 weeks
Cyclosporine**
4 weeks
Sifalimumab (MEDI-545)
26 weeks
Cytokines (eg, IFN)
Washout Time
Similar to Study drug
26 weeks
Danazol
4 weeks
Sirolimus
4 weeks
Dapsone
4 weeks
Sulfasalazine
4 weeks
Eculizumab
12 weeks
Tabalumab
12 weeks
Efalizumab
12 weeks
Tacrolimus***
4 weeks
Epratuzumab
12 weeks
Thalidomide
8 weeks
Etanercept
4 weeks
Tocilizumab
12 weeks
Golimumab
12 weeks
Tofacitinib
4 weeks
Immunosuppressants
Washout Time
Topical Pimecrolimus
4 weeks
Infliximab
12 weeks
*     provided B cell count is normal at screening
**   cyclosporine eye drops are acceptable for use in the study
*** oral tacrolimus has a 4 week washout period and topical tacrolimus has a 2 week washout period

Clinical Study Protocol Amendment 04
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Date 18 May 2016
16(17)
Revised text:
Medications to be Discontinued Prior to signing ICF
Restricted medication
Discontinuation 
prior to signing 
ICF
Restricted medication
Discontinuation 
prior to signing 
ICF
Abatacept (CTLA 4 Ig)
24 weeks
Intravenous Globulin
4 weeks
Acthar® gel
6 weeks
Leflunomide
36 weeks
Adalimumab
12 weeks
Lenalidomide
8 weeks
Alefacept
12 weeks
Lupuzor (IPP-201101)
12 weeks
Anakinra
12 weeks
Memantine
4 weeks
Apremilast
4 weeks
Natalizumab
24 weeks
Atacicept (TACI-Ig)*
40 weeks
Obinutuzumab*
26 weeks
B cell depleter*
26 weeks
Ocrelizumab*
26 weeks
Belimumab
12 weeks
Ofatumumab*
26 weeks
Blisibimod (AMG 623)
8 weeks
Plasmapheresis
24 weeks
Certolizumab pegol
24 weeks
Retinoids
4 weeks
Cyclophosphamide
24 weeks
Rituximab*
26 weeks
Cyclosporine**
4 weeks
Sifalimumab (MEDI-545)
26 weeks
Cytokines (eg, IFN)
Washout Time
Similar to Study drug
26 weeks
Danazol
4 weeks
Sirolimus
4 weeks
Dapsone
4 weeks
Sulfasalazine
4 weeks
Eculizumab
12 weeks
Tabalumab
26 weeks
Efalizumab
12 weeks
Tacrolimus***
4 weeks
Epratuzumab
26 weeks
Thalidomide
8 weeks
Etanercept
4 weeks
Tocilizumab
12 weeks
Golimumab
12 weeks
Tofacitinib
4 weeks
Immunosuppressants
Washout Time
Topical Pimecrolimus
4 weeks
Infliximab
12 weeks
*     provided B cell count is normal at screening
**   cyclosporine eye drops are acceptable for use in the study
*** oral tacrolimus has a 4 week washout period and topical tacrolimus has a 2 week washout period

Clinical Study Protocol Amendment 04
Drug Substance Anifrolumab (MEDI-546)
Study Code D3461C00005
Date 18 May 2016
17(17)
Reason for Amendment: 
Appendix U was modified to provide further guidance to the Investigator. The washout 
periods for Epratuzumab and Tabalumab were corrected.
Persons who initiated the Amendment:
AstraZeneca
Section of protocol affected:
Appendix Z Modified Flare Index
Previous Text:
Hemolytic anemia: Hb <70g/L or decrease in Hb >30 g/L with positive Coombs AND at least 
one of the following: decreased haptoglobin, increased total bilirubin due not due to Gilbert’s 
disease, increased reticulocyte count.
Revised text:
Hemolytic anemia: Hb <70g/L or decrease in Hb >30 g/L with positive Coombs AND at least 
one of the following: decreased haptoglobin, increased total bilirubin not due to Gilbert’s 
disease, increased reticulocyte count.
Reason for Amendment: 
Incorrect text was amended.
Persons who initiated the Amendment:
AstraZeneca

Clinical Study Protocol Amendment 04 Appendix A
Drug Substance
Anifrolumab (MEDI-546)
Study Code
D3461C00005
Edition Number
5
Date
18 May 2016
Protocol Dated
18 May 2016
Appendix A
Signatures