Evaluation of the Abuse Liability of Very Low Nicotine (VLN) Cigarettes With Characterization of Nicotine Exposure Profiles in Adult Smokers
Phase: PHASE1
Conditions: Tobacco Use
Sponsor: 22nd Century Group, Inc.

 
CONFIDENTIAL 
This protocol is the property of 22nd Century Group, Inc. and is intended solely for the guidance of the 
clinical investigation. This protocol may not—in full or part—be passed on, reproduced, published, or 
distributed to any person or entity who is not bound by written confidentiality agreement, for any 
purpose, without the prior consent of 22nd Century Group, Inc..  
 
 
 
 
Clinical Trial Protocol  
 
Evaluation of the Abuse Liability of Very Low Nicotine 
(VLN) Cigarettes with Characterization of Nicotine 
Exposure Profiles in Adult Smokers 
VERY LOW NICOTINE (VLN) CIGARETTES 
 
Original Protocol: 1.0, 15MAR2018 
Amendment 1, 2.0, 11APR2018 
 
 
22ND CENTURY GROUP, INC.:  
8560 Main Street 
Williamsville, NY 14221 
 
 

 
CONFIDENTIAL 
This protocol is the property of 22nd Century Group, Inc. and is intended solely for the guidance of the 
clinical investigation. This protocol may not—in full or part—be passed on, reproduced, published, or 
distributed to any person or entity who is not bound by written confidentiality agreement, for any 
purpose, without the prior consent of 22nd Century Group, Inc..  
 
SUMMARY OF CHANGES 
The primary reason for this amendment is to implement an increase to the volume of blood that 
will be drawn at each blood sampling for pharmacokinetic analysis. Minor typos and/or 
inconsistencies were also corrected. 
The revisions listed below have been made to the protocol (and protocol synopsis, as 
appropriate) and are considered non-substantial by the Sponsor. 
Original text with changes shown (strike 
through) 
New wording (bolded text) 
Reason/Justification 
for change 
Synopsis. Other section affected by this change: None 
Product use behavior (puff duration, number 
of puffs) will be summarized by study 
product using descriptive statistics. 
Product use behavior (number of units, 
duration of gum in mouth) will be 
summarized by study product using 
descriptive statistics. 
Inconsistent with other 
sections of the protocol 
Synopsis. Other section affected by this change: Section 8.2 Exclusion Criteria 
N/A 
12.  Requires concomitant treatment 
with prescription or non-
prescription products that contain 
pseudoephedrine (e.g., nasal/sinus 
decongestants). 
Additional safety 
exclusion criteria 
added at the request of 
investigator. 
Section 9.3 Method of Assigning Subjects to Study Groups Other section affected by this change: None 
On Day 1, subjects will be randomized to 
one of three sequence groups (ABC, BCA, 
CAB, where A = VLN cigarette, 
B=subject’s own-brand cigarette; and C= 
nicotine polacrilex gum), with 
approximately the same number of subjects 
per sequence group. On Day 4, subjects will 
be re-randomized into one of three sequence 
groups (ABC, BCA, CAB; randomization 
sequence for Part B will be different than 
that of Part A for each subject), with 
approximately the same number of subjects 
per sequence group.   
On Day 1, subjects will be randomized 
to one of three sequence groups (ABC, 
BCA, CAB, where A = VLN cigarette, 
B=subject’s own-brand cigarette; and 
C= nicotine polacrilex gum), with 
approximately the same number of 
subjects per sequence group. On Day 
4, subjects will be re-randomized into 
one of three sequence groups (ABC, 
BCA, CAB), with approximately the 
same number of subjects per sequence 
group.   
Minor clarification. 
Section 10.3.4 Urine Drug Screen and Alcohol Testing Other section affected by this change: None 

 
CONFIDENTIAL 
This protocol is the property of 22nd Century Group, Inc. and is intended solely for the guidance of the 
clinical investigation. This protocol may not—in full or part—be passed on, reproduced, published, or 
distributed to any person or entity who is not bound by written confidentiality agreement, for any 
purpose, without the prior consent of 22nd Century Group, Inc..  
 
Original text with changes shown (strike 
through) 
New wording (bolded text) 
Reason/Justification 
for change 
Urine drug screens will test for the following 
drugs of abuse: tetrahydrocannabinol (THC), 
opioids, amphetamines, cocaine, and 
benzodiazepines. The opioid panel will 
include codeine, hydrocodone, 
hydromorphone, levorphanol, oxycodone, 
oxymorphone, ranitidine 
Urine drug screens will test for the 
following drugs of abuse: 
tetrahydrocannabinol (THC), opioids, 
amphetamines, cocaine, and 
benzodiazepines. The opioid panel will 
include morphine, codeine, heroin, 
hydrocodone, hydromorphone, and 
oxycodone. 
Minor clarification 
based on midified 
opioid panel. 
Appendix 17.1. Other section affected by this change: None 
~ volume per sample (mL) 3 mL 
Part B  270 [90]      270 
Total 270         296.5 
 
~ volume per sample (mL) 4 mL 
Part B  360 [90]       360 
Total  360        386.5 
Increase to per sample 
blood volume 
requirement as per 
bioanalytical lab. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 5 of 65 
 
2. 
PROTOCOL SYNOPSIS 
Name of Sponsor/Company: 22nd Century Group Inc. 
Name of Finished Product: Very Low Nicotine (VLN) cigarettes (0.4 mg nicotine/gram of tobacco) 
Study Title:  
Evaluation of the Abuse Liability of Very Low Nicotine (VLN) Cigarettes with Characterization of 
Nicotine Exposure Profiles in Adult Smokers 
Principal Investigator: 
Debra Kelsh, MD 
Study Center: 
Vince & Associates Clinical Research, Inc. 
10103 Metcalf Avenue 
Overland Park, Kansas, 66212, USA 
Study Period: 
Phase of Development: 
Estimated date first subject enrolled: TBD 
Estimated date last subject completed:  
I 
Objectives: 
The primary objective of the study is: 
• 
To evaluate the abuse liability of VLN cigarettes (0.4 mg nicotine/gram of tobacco) 
relative to own-brand cigarettes and 4 mg nicotine polacrilex gum under controlled use and 
uncontrolled (ad libitum) use conditions. 
The secondary objectives of the study are:  
• 
To compare the nicotine pharmacokinetic (PK) profiles of VLN cigarettes relative to own-
brand cigarettes and nicotine polacrilex gum under controlled use and uncontrolled use 
conditions. 
• 
To characterize product use behavior of VLN cigarettes, own-brand cigarettes, and 
nicotine polacrilex gum. 
Methodology: 
This study will be a randomized, two-part, 3-way crossover designed to evaluate the abuse liability, 
PK, and product use behavior associated with study products, including VLN cigarettes, subjects’ own-
brand cigarettes, and nicotine polacrilex gum in healthy adult male and female exclusive smokers.  
Subjects will participate in a standard Screening visit and one 7-day Confined Assessment Phase, 
which will include a product trial session (Day -1), and two study parts (Part A and Part B).  Following 
the Screening visit, eligible subjects will check-in to the study site on Day -1. Following the polacrilex 
gum training session, subjects will be required to abstain from nicotine- and tobacco-containing 
products for approximately 20 hours until the first product use session on Days 1 to 3; use of other 
nicotine-containing products will be prohibited throughout the study. No additional tobacco or nicotine 
products will be provided after the second product use on Days 4 to 6. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 6 of 65 
 
Name of Sponsor/Company: 22nd Century Group Inc. 
Name of Finished Product: Very Low Nicotine (VLN) cigarettes (0.4 mg nicotine/gram of tobacco) 
On Day 1, subjects will be randomized to one of three product sequence groups in Part A, which will 
consist of an ad libitum product use session for each of the following study products for 4 hours in a 
randomized crossover manner (Days 1 to 3; one product per day): 
▪ 
Product A: Non-menthol VLN cigarette 
▪ 
Product B: Own-brand non-menthol filtered standard king size cigarette  
▪ 
Product C: 4 mg Nicotine polacrilex gum (Nicorette® Original Flavor™) 
A pharmacodynamic measure (“use product again” visual analog scale [VAS]) will be administered at 
the end of each ad libitum product use period. Product use behaviors (i.e., number of units consumed, 
duration of gum in mouth) will be collected throughout each ad libitum product use period. 
Upon completion of Part A, subjects will be randomized to one of three product sequence groups in 
Part B, which will consist of 3 study days (Days 4 to 6), with one product per day. Each study day will 
consist of: 1) Controlled Product Use Session (10 puffs from their own-brand cigarette or VLN 
cigarette [maximum 3 ± 2 seconds per puff] at approximately 30 ± 5-second interpuff intervals, or 
chew the nicotine polacrilex gum using the “chew and park” method for 10 minutes); and 2) 
Uncontrolled Product Use Session (ad libitum use for 10 minutes). The Controlled Product Use 
Session and Uncontrolled Product Use Session will be separated by approximately 6 hours. During 
Part B, pharmacodynamic measures, PK, and product use behavior (Uncontrolled only) will be 
collected at various time points each day (See Table 1).  
Safety assessments including adverse events (AEs), physical examinations, vital signs (respiratory rate, 
pulse rate, blood pressure, and oral temperature), electrocardiogram (ECG), clinical laboratory tests 
(clinical chemistry, hematology, urinalysis, and serology), and urine drug and alcohol screens will be 
collected at designated time points throughout the study. Subjects will be discharged from the clinic on 
Day 6, once all procedures are completed (or at Early Termination). 
Number of Subjects (Planned):  
An appropriate number of subjects will be randomized on Day 1 (Part A) to ensure that a minimum of 
54 subjects complete the study. Replacement subjects may be enrolled to ensure that the minimum 
number of subjects complete the study.  
Criteria for Inclusion/Exclusion: 
Subjects will be required to meet each one of the following inclusion criteria in order to be eligible for 
participation in the study: 
1. Must provide written informed consent prior to the initiation of any protocol-specific procedures.  
2. Male and female adults, between 22 to 65 years of age, inclusive. 
3. Body mass index (BMI) within 18.0 to 35.0 kg/m2, inclusive (minimum weight of at least 50.0 kg 
at Screening). 
4. Healthy, as determined by no clinically significant medical history, physical examination, 12-lead 
ECG, vital signs or laboratory (including hematology, clinical chemistry, urinalysis, and serology) 
findings at Screening, as judged by an investigator. 
5. Smoking history of an average of at least 10 manufactured non-menthol flavored filtered standard 
(i.e., not slim) king size combustible cigarettes daily for at least 1 year prior to Screening. Brief 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 7 of 65 
 
Name of Sponsor/Company: 22nd Century Group Inc. 
Name of Finished Product: Very Low Nicotine (VLN) cigarettes (0.4 mg nicotine/gram of tobacco) 
periods (i.e., up to 7 consecutive days) of non-smoking during the 3 months prior to Screening 
(e.g., due to illness or participation in a study where smoking was prohibited) will be permitted. 
6. Self-reporting of desire to smoke within approximately 30 minutes of waking. 
7. Positive urine cotinine (≥500 ng/mL) at Screening. 
8. Negative pregnancy test at Screening and Day -1 (check-in) for all female subjects. 
9. Female subjects of non-childbearing potential must be surgically sterile or 1 year postmenopausal 
(as confirmed by serum Follicle Stimulating Hormone [FSH] > 35 U/L). A subject is considered to 
be surgically sterile if she has had a tubal ligation, hysterectomy, bilateral salpingo-oopherectomy 
or bilateral oopherectomy, or hysterectomy with bilateral salpingo-oopherectomy. If the subject is 
of childbearing potential, she must be using a medically accepted method of contraception and 
agree to continued use of this method for the duration of the study and for 30 days after completion 
of the study. Acceptable methods of contraception include abstinence, birth control pill, or an 
intrauterine device (known to have a failure rate of less than 1% per year) or double barrier method 
of contraception (e.g., male condom in addition to a diaphragm, contraceptive sponge or 
spermicide). 
10. Able to speak, read, and understand English sufficiently to allow completion of all study 
assessments. 
11. Must be willing to comply with the requirements and restrictions of the study. 
Subjects will not be eligible to participate in this study if any one of the following exclusion criteria is 
met: 
1. Inability to tolerate 4 mg nicotine polacrilex gum during product use trial on Day -1 (check-in) or 
dentition prevents subjects from chewing gum. 
2. History or presence of any clinically significant cardiac, psychiatric, endocrine, hematologic, 
hepatic, immunologic, metabolic, urologic, pulmonary, neurologic, dermatologic, renal, or other 
major disease at Screening, which in the opinion of an investigator would jeopardize the safety of 
the subject or the validity of the study results. 
3. History or presence of any type of malignant tumors. 
4. Clinically significant abnormal findings on the vital signs, physical examination (including oral 
exam), medical history, or clinical laboratory results, in the opinion of an investigator. 
5. Positive serology test results for human immunodeficiency virus (HIV-1/HIV-2) Antibodies, 
hepatitis B surface antigen (HbsAg), or hepatitis C Antibody (HCVAb). 
6. An acute illness (e.g., upper respiratory infection, viral infection) requiring treatment within 2 
weeks prior to Day -1 (check-in). 
7. Drug or alcohol abuse or dependence within the 24 months prior to Screening (except nicotine), as 
defined by the Diagnostic and Statistical Manual of Mental Disorders, 4th edition text revision 
(DSM-IV-TR), or any self-reported dependence or “addiction” within the subject’s lifetime (except 
nicotine or caffeine). 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 8 of 65 
 
Name of Sponsor/Company: 22nd Century Group Inc. 
Name of Finished Product: Very Low Nicotine (VLN) cigarettes (0.4 mg nicotine/gram of tobacco) 
8. Subjects who have ever been in treatment for substance use disorder(s) or who are currently 
seeking treatment for substance use disorder(s). 
9. Positive urine drug screen (UDS) or urine alcohol test at Screening or Day -1 (check-in). 
10. History or any current conditions that may interfere with drug absorption, distribution, metabolism, 
or excretion. 
11. History of severe allergic reaction (including anaphylaxis) to any substance, or previous status 
asthmaticus, or food allergies/intolerances/restrictions, or special dietary needs which, in the 
judgment of an investigator, contraindicates the subject’s participation in the study. 
12. Requires concomitant treatment with prescription or non-prescription products that contain 
pseudoephedrine (e.g., nasal/sinus decongestants). 
13. Self-reported use of nicotine polacrilex gum, or other nicotine replacement therapy products in the 
30 days prior to Day -1 (check-in). Isolated incidents within 30 days prior to Day -1 (check-in) 
may be permitted at the discretion of the investigator. 
14. Subject has unsuitable or difficult venous access or is unwilling or unable to undergo direct 
venipuncture or catheter insertion. 
15. Subject has donated or lost 100 to 499 mL whole blood within 30 days or more than 499 mL whole 
blood within 56 days preceding entry into the Confined Assessment Phase.  
16. Subject is an employee of the sponsor or research site personnel directly affiliated with this study 
or their immediate family member defined as a spouse, parent, child or sibling, whether biological 
or legally adopted. 
17. Subject is lactating and or breast feeding. 
18. A subject who, in the opinion of an investigator, is considered unsuitable or unlikely to comply 
with the study protocol for any reason. 
Test Product: 
VLN cigarettes (0.4 mg nicotine/gram of tobacco) 
Reference products: 
Own-brand non-menthol-flavored combustible cigarettes 
Nicorette® Original Flavor™ nicotine polacrilex gum (4 mg) 
Duration of Study: 
Each subject will participate in the study for up to approximately five weeks, from Screening to 
Discharge. 
Criteria for Evaluation: 
Pharmacodynamic Endpoints: 
The primary pharmacodynamic endpoints are: 
▪ 
Controlled Product Use (Part B): 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 9 of 65 
 
Name of Sponsor/Company: 22nd Century Group Inc. 
Name of Finished Product: Very Low Nicotine (VLN) cigarettes (0.4 mg nicotine/gram of tobacco) 
o Emax_urge(controlled): The maximum reduction in VAS score for the question “Urges to 
smoke” (Tobacco/Nicotine Withdrawal Questionnaire) between pre-use and post-use 
(i.e., VASpre-use1 – VASpost-use1) during the first product use in Part B. 
o Emax_plst(controlled): The largest VAS score recorded for the response to the question “Is the 
product pleasant right now?” (Direct Effects of Product Questionnaire) during the first 
product use in Part B. 
The secondary pharmacodynamic endpoints are: 
Part A (Ad Libitum Product Use) 
▪ 
Use the Product Again VAS score  
▪ 
Product use behavior (number of units consumed, duration of gum in mouth) 
Part B (Controlled and Uncontrolled Product Use) 
▪ 
Tobacco/Nicotine Withdrawal Questionnaire:  
o Emax_item(controlled): The maximum reduction in VAS score for each itema between pre-use 
and post-use (i.e., VASpre-use1 – VASpost-use1) during the first product use in Part B. 
o Emax_item(uncontrolled): The maximum reduction in VAS score for each item between pre-use 
and post-use (i.e., VASpre-use2 – VASpost-use2) during the second product use in Part B. 
▪ 
Direct Effects of Product Questionnaire: 
o Emax_item(controlled): The largest VAS score recorded for the response to each itemb during the 
first product use in Part B. 
o Emax_item(uncontrolled): The largest VAS score recorded for the response to each item during 
the second product use in Part B. 
▪ 
Product use behavior  
o Uncontrolled Product Use Sessions: number of inhalations, duration of inhalations [per 
puff], duration of polacrilex gum in mouth 
Pharmacokinetic Endpoints: 
▪ 
Cmax(controlled): Maximum measured plasma nicotine concentration during the Controlled Use 
Session. 
▪ 
Cmax(uncontrolled): Maximum measured plasma nicotine concentration during the Uncontrolled Use 
Session. 
▪ 
AUC(controlled): Area under the nicotine concentration-time curve calculated using linear 
trapezoidal summation from time zero (defined as the start of controlled use) to 180 minutes 
(or the last quantifiable concentration during that interval). 
 
a Tobacco/Nicotine Withdrawal Questionnaire items (secondary): Emax_urge (uncontrolled only), Emax_anx, Emax_diffct, 
Emax_impat, and Emax_crav. 
b Direct Effects of Product Questionnaire items (secondary): Emax_plst (uncontrolled only), Emax_stf, Emax_calm, Emax_conc, 
Emax_awake, Emax_sick, Emax_hunger, and Emax_more. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 10 of 65 
 
Name of Sponsor/Company: 22nd Century Group Inc. 
Name of Finished Product: Very Low Nicotine (VLN) cigarettes (0.4 mg nicotine/gram of tobacco) 
▪ 
AUC(uncontrolled): Area under the nicotine concentration-time curve calculated using linear 
trapezoidal summation from time 360 (defined as the start of uncontrolled use) to 540 minutes 
(or the last quantifiable concentration during that interval). 
▪ 
Tmax (controlled): Time of the maximum measured plasma nicotine concentration during the 
Controlled Use Session.  
▪ 
Tmax(uncontrolled): Time of the maximum measured plasma nicotine concentration during the 
Uncontrolled Use Session.  
▪ 
Kel(controlled): Apparent first-order terminal nicotine elimination rate constant calculated from a 
semi-log plot of the plasma concentration-time curve of the Controlled Use Session.  
▪ 
Kel(uncontrolled): Apparent first-order terminal nicotine elimination rate constant calculated from a 
semi-log plot of the Uncontrolled Use Session.  
▪ 
T½(controlled): Apparent first-order terminal nicotine elimination half-life calculated as 0.693/Kel 
of the plasma concentration-time curve from time zero (defined as the start of controlled use) 
to 180 minutes. 
▪ 
T½(uncontrolled): Apparent first-order terminal nicotine elimination half-life calculated as 
0.693/Kel of the plasma concentration-time curve from time zero (defined as the start of 
uncontrolled use) to 540 minutes. 
Safety: 
The following safety endpoints will be evaluated: 
▪ 
Incidence, frequency, severity, and relationship to product of AEs 
▪ 
Clinical laboratory assessments (hematology, biochemistry, urinalysis) 
▪ 
Vital signs (respiratory rate, pulse rate, blood pressure, and oral temperature) 
▪ 
12-lead ECG 
▪ 
Physical examination results 
▪ 
Concomitant medications 
Statistical Methods (Data Analysis): 
Determination of Sample Size: 
Using a 2-sided Type I error rate at α=0.05 and assuming a mean difference in Emax_urge(controlled) between 
own-brand cigarette and nicotine polacrilex gum of 15.85 points and standard deviation (SD) of 28.44, 
54 completed subjects will be required to detect a significant difference between own-brand cigarette 
and nicotine polacrilex gum with greater than 80% power. 
Using a 2-sided Type I error rate at α=0.05 and assuming a mean difference in Emax_plst(controlled) between 
own-brand cigarette and nicotine polacrilex gum of 35.21 points and SD of 31.82, estimate based on 
data obtained from the study site, 16 completed subjects will be adequate to detect a significant 
difference between own-brand cigarette and nicotine polacrilex gum with greater than 80% power.  

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 11 of 65 
 
Name of Sponsor/Company: 22nd Century Group Inc. 
Name of Finished Product: Very Low Nicotine (VLN) cigarettes (0.4 mg nicotine/gram of tobacco) 
The study analysis populations will be defined as follows: 
Randomized Population (Part A): All subjects who are randomized into Part A.  
Randomized Population (Part B): All subjects who are randomized into Part B. 
Safety Population: All randomized subjects who use at least one of the study products. This will 
include Day -1 (check-in and product trial) and Study Days after the randomization. The Safety 
Population will be used for the summary of subject demographics, baseline characteristics, safety 
information, and AEs. 
Pharmacodynamic Population: All subjects who use any study product and have pre-use 
(Tobacco/Nicotine Withdrawal questionnaire) and at least one post-use (for Tobacco/Nicotine 
Withdrawal and Direct Effects of Product) VAS score for the Controlled Use Session of Part B. This 
population will be used for statistical analyses of the pharmacodynamic measures. 
PK Population: All subjects who use any study product and have pre- and at least one post-use plasma 
nicotine concentration value for the Controlled Use Session of Part B. The PK Population will be used 
for statistical analyses of the PK parameters. 
Completer Population: All randomized subjects who complete all product use periods and have PK 
and pharmacodynamic data in the Controlled Use Session of Part B. This dataset will be used for 
analyses of the two primary pharmacodynamic measures endpoints as a sensitivity analysis to the 
primary analysis. 
Pharmacodynamic Measures: 
Part A: 
Responses to Use the Product Again VAS will be summarized by study product using descriptive 
statistics. A summary table of frequencies will also be provided.  
Product use behavior (number of units, duration of gum in mouth) will be summarized by study 
product using descriptive statistics.  
Part B: 
Responses to each Tobacco/Nicotine Withdrawal Questionnaire and Direct Effects of Product 
Questionnaire item will be summarized by time point for each study product, and product use 
condition. For Tobacco/Nicotine Withdrawal VAS scores, descriptive statistics for the difference from 
pre-use at each time point will also be reported. Derived parameters (Emax) for each questionnaire item 
will be summarized using descriptive statistics. 
A linear mixed effects model for analysis of variance/covariance (Proc Mixed) will be performed on 
Emax_urge(controlled) and Emax_plst(controlled). The model will include Emax as the response variable, sequence, 
study product, and period as fixed model effects, baseline score as a covariate (for Emax_urge only) and 
subject nested-within sequence as a random effect. Sequence will be tested using subject nested-
within-sequence as the error term. Least square mean (LSM) and 95% confidence interval (CI) for each 
Study Product group will be provided. Comparisons will be made for Product A vs. B, A vs. C and B 
vs. C. The comparison between Product A and Product C will be used as a comparison for internal 
validity. The LSM difference, p value and 95% CI of the difference will be provided. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 12 of 65 
 
Name of Sponsor/Company: 22nd Century Group Inc. 
Name of Finished Product: Very Low Nicotine (VLN) cigarettes (0.4 mg nicotine/gram of tobacco) 
The same model will be used for Emax_urge(uncontrolled) and Emax_plst(uncontrolled), and all Emax of other questions 
in the Tobacco/Nicotine Withdrawal Questionnaire and Direct Effects of Product Questionnaire for the 
controlled and uncontrolled product uses in Part B. 
Product use behavior will be summarized by product using descriptive statistics.  
Pharmacokinetics: 
Descriptive statistics of plasma nicotine concentrations will be tabulated by time point for each study 
product and product use condition. Derived PK parameters (both unadjusted for baseline and baseline-
adjusted) will be summarized using descriptive statistics. Summaries and individual data will be 
provided for plasma nicotine-adjusted concentrations. 
A linear mixed model for analysis of variance (Proc Mixed) will be performed on the baseline-adjusted 
log transformed nicotine PK parameters in Part B. The model will include sequence, study product, and 
period as fixed effects and subject nested within sequence as a random effect. Sequence will be tested 
using subject nested-within sequence as the error term. From each model, the geometric LSM and 95% 
CI will be calculated for each study product. Separate analyses will be performed on the parameters 
calculated for the controlled and uncontrolled product use sessions. Geometric mean ratios for each 
pair comparison, 95% CI and p value will be provided.  
The same linear mixed effect model as used for the analysis of Cmax(controlled) will be used for 
Cmax(uncontrolled) of second product use in Part B, and for AUC following all product uses. The Hodges-
Lehmann’s method will be used to estimate the median differences and the 95% CI of Tmax and T½ 
between the products. 
Safety: 
A by-subject AE data listing, including verbatim term, preferred term, study product, severity, and 
relationship to study product, will be provided. Study product use–emergent AEs will be summarized 
with tables. Frequencies of subjects with AEs, serious adverse events (SAEs) and incidence of those 
events, regardless of relationship to study product, will be summarized by study product and sorted by 
system organ class. Frequencies of AEs will be summarized by severity and relationship to study 
product. Clinical laboratory evaluations (serum chemistry, hematology, and urinalysis), vital signs 
measurements (blood pressure, pulse, respiration, and oral temperature) and ECG measurements (VR, 
PR, QRS, QT, and QTcF intervals) will be summarized descriptively. All concomitant medications 
recorded during the study will be listed by subject. Physical examinations will be listed by subject and 
time point of collection. 
 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 13 of 65 
 
3. 
TABLE OF CONTENTS 
1. Sponsor and Key Personnel Contact Information .................................................... 4 
2. Protocol Synopsis ....................................................................................................... 5 
3. Table of Contents...................................................................................................... 13 
4. List of Abbreviations and Definition of Terms ........................................................ 16 
5. Introduction .............................................................................................................. 18 
5.1. 
Background ......................................................................................................... 18 
5.2. 
Study Rationale.................................................................................................... 18 
6. Study Objectives ....................................................................................................... 20 
6.1. 
Primary Objective ................................................................................................ 20 
6.2. 
Secondary Objectives ........................................................................................... 20 
7. Investigational Plan .................................................................................................. 21 
7.1. 
Overall Study Design and Plan ............................................................................. 21 
7.1.1. Screening Phase (Visit 1) ................................................................................... 21 
7.1.2. Confined Assessment Phase (Visit 2).................................................................. 21 
7.1.3. End of Study or Early Termination ..................................................................... 22 
7.2. 
Discussion of Study Design ................................................................................. 27 
8. Selection of Study Population .................................................................................. 29 
8.1. 
Inclusion Criteria ................................................................................................. 29 
8.2. 
Exclusion Criteria ................................................................................................ 30 
8.3. 
Removal of Subjects from or Assessment ............................................................. 31 
8.4. 
Study Restrictions ................................................................................................ 32 
9. Materials ................................................................................................................... 33 
9.1. 
Study Products ..................................................................................................... 33 
9.2. 
Identity of Investigational Product(s) ................................................................... 33 
9.2.1. Handling, Storage, and Accountability ............................................................... 33 
9.2.2. Dispensing and Administration........................................................................... 33 
9.3. 
Method of Assigning Subjects to Study Groups .................................................... 33 
9.4. 
Selection and Timing of Product Use ................................................................... 34 
9.4.1. Part A (Days 1 to 3) ............................................................................................ 34 
9.4.2. Part B (Days 4 to 6)............................................................................................ 35 
9.5. 
Meal Schedule ..................................................................................................... 35 
9.6. 
Blinding ............................................................................................................... 36 
9.7. 
Prior and Concomitant Therapy ........................................................................... 36 
9.8. 
Product Compliance ............................................................................................. 36 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 14 of 65 
 
10. Study Procedures and Assessments ......................................................................... 37 
10.1. Demographics and Other Baseline Characteristics................................................ 37 
10.1.1. Informed Consent............................................................................................... 37 
10.1.2. Demographics .................................................................................................... 37 
10.1.3. Medical History ................................................................................................. 37 
10.1.4. Medication and Smoking History ....................................................................... 37 
10.2. Pharmacodynamic Measures ................................................................................ 37 
10.2.1. Tobacco/Nicotine Withdrawal Scale ................................................................... 37 
10.2.2. Direct Effects of Product Questionnaire ............................................................. 38 
10.2.3. Use the Product Again Questionnaire ................................................................. 38 
10.2.4. Product Use ....................................................................................................... 38 
10.3. Safety Assessments .............................................................................................. 39 
10.3.1. Adverse Events and Serious Adverse Events ...................................................... 39 
10.3.2. Pregnancy .......................................................................................................... 42 
10.3.3. Clinical Laboratory Assessments ........................................................................ 42 
10.3.4. Urine Drug Screen and Alcohol Testing.............................................................. 43 
10.3.5. Vital Signs ......................................................................................................... 44 
10.3.6. 12-lead Electrocardiograms ................................................................................ 44 
10.3.7. Physical Examination ......................................................................................... 44 
10.4. Pharmacokinetic Assessments .............................................................................. 44 
10.5. Appropriateness of Measures ............................................................................... 45 
10.6. Pharmacodynamic Variables ................................................................................ 45 
10.6.1. Primary Pharmacodynamic Endpoints ................................................................ 45 
10.6.2. Secondary Endpoints .......................................................................................... 45 
10.7. Pharmacokinetic Variables ................................................................................... 46 
10.8. Safety Variables ................................................................................................... 47 
11. Data Quality Assurance ........................................................................................... 48 
11.1. Data Collection .................................................................................................... 48 
11.2. Study Auditing and Monitoring ............................................................................ 48 
12. Statistical Methods and Determination of Sample Size .......................................... 50 
12.1. Statistical and Analytical Plans ............................................................................ 50 
12.2. Determination of Sample Size .............................................................................. 50 
12.3. Analysis Populations ............................................................................................ 50 
12.4. Planned Analyses ................................................................................................. 51 
12.4.1. Subject Disposition ............................................................................................ 51 
12.4.2. Demographics and Other Baseline Characteristics .............................................. 51 
12.4.3. Analysis of Pharmacodynamic Measures ........................................................... 51 
12.4.4. Analysis of Pharmacokinetics ............................................................................ 52 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 15 of 65 
 
12.4.5. Analysis of Safety Assessments.......................................................................... 53 
13. Study Administration and Investigator Responsibilities ........................................ 54 
13.1. Regulatory and Ethical Considerations ................................................................. 54 
13.1.1. Ethical Conduct of the Study .............................................................................. 54 
13.1.2. Regulatory Authority and Ethics Approval ......................................................... 54 
13.1.3. Subject Informed Consent .................................................................................. 54 
13.2. Privacy and Confidentiality .................................................................................. 55 
13.3. Study and Site Closure ......................................................................................... 55 
13.4. Regulatory Documents and Records Retention ..................................................... 56 
13.5. Delegation of Responsibilities and Adequate Resources ....................................... 56 
13.6. Protocol Amendments .......................................................................................... 57 
13.7. Financial Disclosure............................................................................................. 57 
14. Sponsor Approval Page ............................................................................................ 58 
15. Investigator Protocol Agreement Page .................................................................... 59 
16. References ................................................................................................................. 60 
17. Appendices ............................................................................................................... 62 
17.1. Summary of Blood Volume Requirements ............................................................ 62 
17.2. Pharmacodynamic Measures/Scales ..................................................................... 63 
17.2.1. Tobacco/Nicotine Withdrawal Questionnaire ...................................................... 63 
17.2.2. Direct Effects of Product Questionnaire ............................................................. 64 
17.2.3. Use the Product Again Questionnaire ................................................................. 64 
 
Table of Tables 
Table 1: Schedule of Assessments .................................................................................... 24 
Table 2: Clinical Laboratory Assessments ........................................................................ 43 
 
Table of Figures 
Figure 1: Overview of Study Design ................................................................................ 23 
 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 16 of 65 
 
4. 
LIST OF ABBREVIATIONS AND DEFINITION OF TERMS 
AE 
Adverse event 
AUC(controlled) 
Area under the nicotine concentration-time curve calculated using linear 
trapezoidal summation from time zero (defined as the start of controlled use 
to 180 minutes, or the last quantifiable concentration during that interval). 
AUC(uncontrolled) 
Area under the nicotine concentration-time curve calculated using linear 
trapezoidal summation from time 360 (defined as the start of uncontrolled 
use to 540 minutes,or the last quantifiable concentration during that 
interval). 
BMI 
Body mass index 
CI 
Confidence interval 
Cmax(controlled/uncontrolled) Maximum measured plasma concentration during the 
controlled/uncontrolled use session 
CRF 
Case Report Form (may include electronic data capture systems or paper 
forms) 
CSA 
Clinical study agreement 
DSM-IV-TR 
Diagnostic and Statistical Manual of Mental Disorders, 4th edition text 
revision 
ECG 
Electrocardiogram 
EDC 
Electronic data capture 
Emax_item 
Maximum reduction in VAS score for each item between pre-use and post-
use (i.e., VASpre-use1 – VASpost-use1) 
Emax_plst 
Maximum score for Pleasant VAS 
Emax_urge 
Maximum reduction “Urges to smoke” (Tobacco/Nicotine Withdrawal 
Questionnaire) between pre-use and post-use  
ENDS 
Electronic nicotine delivery system 
FDA 
Food and Drug Administration 
FSH 
Follicle Stimulating Hormone 
GCP 
Good Clinical Practice 
HbsAg 
Hepatitis B surface antigen 
HCVAb 
Hepatitis C Antibody 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 17 of 65 
 
HIV 
Human Immunodeficiency Virus 
ICF 
Informed consent form 
ICH 
International Conference on Harmonisation 
IRB 
Institutional Review Board 
Kel(controlled/uncontrolled) 
Apparent first-order terminal elimination rate constant calculated from a 
semi-log plot of the plasma concentration-time curve of the 
controlled/uncontrolled use session. 
LSM 
Least square mean 
PK 
Pharmacokinetic 
QA 
Quality assurance 
SAE 
Serious adverse event 
SAP 
Statistical analysis plan 
SD 
Standard deviation 
T1/2(controlled) 
Apparent first-order terminal elimination half-life calculated as 0.693/Kel of 
the plasma concentration-time curve from time zero (defined as the start of 
controlled use) to 180 minutes. 
T1/2(uncontrolled) 
Apparent first-order terminal elimination half-life calculated as 0.693/Kel of 
the plasma concentration-time curve from time zero (defined as the start of 
controlled use) to 540 minutes. 
THC 
tetrahydrocannabinol 
Tmax(controlled/uncontrolled) Time of the maximum measured plasma concentration during the controlled 
/uncontrolled use session. 
VAS 
Visual analog scale 
VLN 
Very low nicotine 
UDS 
Urine drug screen 
 
 
 
 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 18 of 65 
 
5. 
INTRODUCTION 
5.1. 
Background 
With the introduction of the 2009 Family Smoking Prevention and Tobacco Control Act, the 
Food and Drug Administration (FDA) was granted the authority to regulate tobacco products 
including the nicotine content of cigarettes. In July 2017, FDA Commissioner Scott Gottlieb, 
M.D., announced the FDA’s intention to limit nicotine in cigarettes to minimally or non-
addictive levels. During his announcement, Dr. Gottlieb stated that it has long been known that 
nicotine is the primary addictive component of cigarettes and that if smokers lose their addiction 
to cigarettes, they will be free to choose when and how often to smoke. A key component in the 
FDA’s announced plan is to provide current smokers who are unable or unwilling to quit using 
nicotine with other, less harmful, means to obtain it. In other words, to provide a migration route 
away from traditional cigarettes to other types of tobacco or nicotine products such as cigarettes 
based on heat not burn technology, traditional smokeless, Snus, or electronic nicotine delivery 
system (ENDS) products. 
Historically, tobacco harm reduction initiatives have focused on efforts to prevent or reduce 
tobacco initiation rates, increase quit rates, and decrease recidivism. The proposed reduction of 
nicotine cigarettes is believed to represent a viable policy tool to impact cigarette initiation rates 
and cigarette quit rates. Studies conducted to date indicate that reducing the nicotine content of 
cigarettes to non-addictive levels would potentially limit the reinforcing effects of cigarettes. A 
number of recent studies suggests that cigarettes with very low nicotine (VLN) content are 
associated with a positive set of outcomes, including reductions in the number of cigarettes 
smoked, reductions in nicotine exposure and nicotine dependence, increased abstinence from 
smoking, reduced exposure to toxicants, and fewer adverse events (AEs) (Rupprecht et al., 2017 
; Donny et al., 2007; Donny et al., 2015; Benowitz et al., 2007; Benowitz et al., 2009; Benowitz 
et al., 2012; Hatsukami et al., 2013). These studies evaluated cigarettes with nicotine content 
ranging from 0.4 to 15.8 mg nicotine per gram of tobacco with the typical combustible cigarette 
tobacco content ranging from approximately 8 mg to 20 mg.   
The cigarettes included in the reported studies were manufactured by 22nd Century Group, Inc. 
under contract to RTI/National Institute on drug Abuse (NIDA).  22nd Century Group,Inc. is 
currently evaluating the commercial potential of a menthol and non-menthol VLN cigarette (0.4 
mg nicotine/gram of tobacco). It is anticipated that these cigarettes will provide similar benefits 
to a consumer that switches from their usual brand to the VLN cigarette as those reported in the 
literature (Rupprecht et al., 2017; Donny et al., 2007; Donny et al., 2015; Benowitz et al., 2007; 
2009; 2012; Hatsukami et al., 2013).  
5.2. 
Study Rationale 
The purpose of the current study is to provide an abuse liability assessment of VLN cigarettes 
compared with own-brand cigarettes and nicotine polacrilex gum in current manufactured 
filtered king size cigarette smokers, as recommended in “FDA Draft Guidance for Industry 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 19 of 65 
 
Modified Risk Tobacco Products (March 2012)”. Results of this study may provide supporting 
evidence for lower abuse liability of VLN cigarettes relative to own-brand cigarettes. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 20 of 65 
 
6. 
STUDY OBJECTIVES 
6.1. 
Primary Objective 
The primary objective of the study is:  
▪ To evaluate the abuse liability of VLN cigarettes (0.4 mg nicotine/gram of tobacco) 
relative to own-brand cigarettes and nicotine polacrilex gum under controlled use and 
uncontrolled use conditions. 
6.2. 
Secondary Objectives 
The secondary objectives of the study are:  
▪ To compare the nicotine pharmacokinetic (PK) profiles of VLN cigarettes relative to 
own-brand cigarettes and nicotine polacrilex gum under controlled use and uncontrolled 
use conditions. 
▪ To characterize product use behavior of VLN cigarettes, own-brand cigarettes, and 
nicotine polacrilex gum. 
 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 21 of 65 
 
7. 
INVESTIGATIONAL PLAN 
7.1. 
Overall Study Design and Plan 
This study will be a randomized, two-part, 3-way crossover designed to evaluate the abuse 
liability, PK, and product use behavior associated with study products, including VLN cigarettes, 
subjects’ own-brand cigarettes, and nicotine polacrilex gum in healthy adult male and female 
exclusive smokers. The study will consist of 3 phases: Screening, a Confined Assessment Phase 
consisting of product training session, Part A, and Part B, and an End of Study Phase.  
7.1.1. 
Screening Phase (Visit 1) 
The Screening Phase will be completed during a clinic visit within 28 days of the Confined 
Assessment Phase and will consist of a standard medical screen. 
7.1.2. 
Confined Assessment Phase (Visit 2) 
7.1.2.1. 
Check-in and Product Trial (Day -1) 
Subjects who successfully complete the Screening Phase will return to the clinical unit on Day -1 
for check-in and to complete a product trial session. Subjects will engage in a 10-minute product 
training session with the nicotine polacrilex gum in order to familiarize themselves with the 
“chew and park” method, which requires subjects to chew the gum until they experience a 
tingling sensation, park the gum between the cheek and gum until the tingling subsides, and then 
begin chewing again. On Day -1, subjects will also complete a training session on the 
pharmacodynamic questionnaires. Subjects will be required to abstain from using nicotine- and 
tobacco-containing products for approximately 20 hours prior to each product use session in Part 
A. 
7.1.2.2. 
Part A (Day 1 to 3) 
On Day 1, subjects will be randomized to one of three product sequence groups in Part A, which 
will consist of an ad libitum product use session of each of the following study products for 4 
hours in a randomized crossover manner (one product per day): 
▪ Product A: VLN cigarette 
▪ Product B: Own-brand non-menthol cigarette 
▪ Product C: Nicorette® Original Flavor™ 
A pharmacodynamic measure (“use product again” visual analog scale [VAS]) will be 
administered at the end of each ad libitum product use period and product use behaviors (i.e., 
number of units consumed, duration of gum in mouth) will be collected throughout each ad 
libitum product use period (See Table 1). 
7.1.2.3. 
Part B (Day 4 to 6) 
Upon completion of Part A, subjects will be randomized to one of three product sequence groups 
in Part B, which will consist of 3 study days (Days 4 to 6), with one product per day. Each study 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 22 of 65 
 
day will consist of: 1) Controlled Product Use Session (10 puffs from their own-brand cigarette 
or VLN cigarette [maximum 3 ± 2 seconds per puff] at approximately 30 ± 5-second interpuff 
intervalsa, or chew the nicotine polacrilex gum using the “chew and park” method for 10 
minutes); and 2) Uncontrolled Product Use Session (use of one unit of a product ad libitum for 
10 minutes). The Controlled Product Use Session and Uncontrolled Product Use Session will be 
separated by approximately 6 hours. During Part B, pharmacodynamic measures, PK samples, 
and product use behavior (Uncontrolled Product Use Session only) will be collected at various 
time points each day (See Table 1). 
Safety assessments, including AEs, physical examinations, vital signs (respiratory rate, pulse 
rate, blood pressure, and oral temperature), electrocardiogram (ECG), clinical laboratory tests 
(clinical chemistry, hematology, urinalysis, and serology), urine drug screen (UDS), and alcohol 
test will be collected at designated time points throughout the study.  
7.1.3. 
End of Study or Early Termination 
Subjects will be discharged from the clinic on Day 6 once all procedures are completed (or at 
Early Termination). 
The maximum duration of subject participation, including Screening will be approximately 5 
weeks. 
An overview of the study design is provided in Figure 1. 
Study assessments and procedures will be performed at the visits and time points outlined in the 
Schedule of Assessments (Table 1). 
 
a In the event that the subject completes the cigarette in less than 10 puffs, no additional cigarette will be provided.  

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 23 of 65 
 
Figure 1: Overview of Study Design 
 
 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 24 of 65 
 
Table 1: Schedule of Assessments  
 
Screening Check-
in 
Part A 
Part B 
End of 
Study/ET 
Day: -28 to –2 
-1 
1 to 3 
4 to 6 (Daily controlled use and uncontrolled use sessions) 
6 
Assessment 
 
 
 
Assessment timepoints (minutesa) 
 
Informed consent 
X 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Demographics 
X 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Medical history 
X 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Review of eligibility 
X 
X 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Physical examination 
X 
Xb 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Xb 
Height, weight, BMI 
X 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
HIV, Hepatitis B/C 
X 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Pregnancy test 
Xc 
Xd 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
FSH (post-menopausal 
women) 
X 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Vital signse 
X 
X 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
X 
Oral temperature 
X 
X 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
X 
12-lead ECG 
X 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
X 
Urine cotinine screen 
X 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Urine drug and alcohol 
test 
X 
X 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
a All listed timepoints are minutes after the start of product use 
b Abbreviated (symptom-directed) physical examination performed at the investigator’s discretion 
c Serum pregnancy test 
d Urine pregnancy test 
e Vital signs include respiratory rate, pulse rate and blood pressure 
 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 25 of 65 
 
 
Screening Check-
in 
Part A 
Part B 
End of 
Study/ET 
Day: -28 to –2 
-1 
1 to 3 
4 to 6 (Daily controlled use and uncontrolled use sessions) 
6 
Assessment 
 
 
 
Assessment timepoints (minutesa) 
 
Clinical laboratory testsf 
X 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
X 
Concomitant medications 
X 
X 
X 
<--------- Recorded throughout ---------> 
X 
AE Monitoringg 
X 
X 
X 
<--------- Recorded throughout ---------> 
X 
Randomization 
 
 
preh 
prei 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Product use 
 
Xj 
Xk 
 
<0l - 
- 
- 
> 
 
 
 
 
 
 
 
 
 
 
 
PK samplingm 
 
 
 
pre 
 
2 
5 
7 
10 
12 
15 
20 
30 
45 
60 
90 
120 150 180 
 
Pharmacodynamic 
Training/practicen 
 
X 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Tobacco/Nicotine 
Withdrawal 
Questionnaireo 
 
 
 
pre 
 
 
5 
 
 
 
15 
 
30 
 
60 
90 
 
 
 
 
 
f Clinical laboratory assessments include hematology, biochemistry, and urinalysis 
g Spontaneous AE reporting is continuous throughout the study, beginning with the time the subject gives informed consent; however, at regular intervals, AE 
checks will be performed using a non-leading question. 
h Day 1 only 
i Day 4 only 
j Trial of 4 mg nicotine polacrilex gum for 10 minutes  
k Product use under ad libitum condition for 4 hours on each day 
l First product under controlled use condition manner (10 puffs [maximum 3 ± 2 seconds per puff] with approximately 30-second inter-puff-intervals for 
cigarettes and 10 minutes “chew and park” for nicotine polacrilex gum) and second product under uncontrolled use condition for approximately 10 minutes (ad 
libitum) with approximately 6 hours in between 1st and 2nd use sessions 
m Blood samples collected at same time points following the start of the 1st and 2nd product use sessions. Pre-product use samples should be collected within 
approximately 5 minutes prior to the start of product use, all other time points should be taken within ± 1 minute for the first 30 minutes and ±5 minutes from 
the nominal time for all other time points (except when coinciding with PD testing). Actual time of blood draw will be recorded.  
n Additional PD training sessions may be performed throughout the study, as necessary.  
o Administered at same time points following the start of the 1st and 2nd product use sessions 
 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 26 of 65 
 
 
Screening Check-
in 
Part A 
Part B 
End of 
Study/ET 
Day: -28 to –2 
-1 
1 to 3 
4 to 6 (Daily controlled use and uncontrolled use sessions) 
6 
Assessment 
 
 
 
Assessment timepoints (minutesa) 
 
Direct Effects of Product 
Questionnaireo 
 
 
 
pre 
 
 
5 
 
 
 
15 
 
30 
 
60 
90 
 
 
 
 
Use the product again 
VAS 
 
 
Xp 
 
 
 
 
 
 
 
 
 
 
 
 
90o 
 
 
 
 
Amount of product used 
 
 
Xq 
 
<r 
- 
- 
- 
> 
 
 
 
 
 
 
 
 
 
 
 
Tobacco cessation 
information 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
X 
Admission 
 
X 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Discharge 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
X 
NOTE: Pre-use assessments (not including PK) may be conducted up to 60 minutes prior to product use. When assessments coincide at any given timepoint during a product use session, the 
order of assessments should be pharmacodynamics assessments followed by PK. The pharmacodynamic assessments should be conducted at the nominal timepoint (±2 minutes up to 30 
minutes postdose and ±5 minutes postdose thereafter). AE=adverse event; BMI=body mass index; ECG=electrocardiogram; ET=early termination; FSH=follicle 
stimulating hormone; HIV=human immunodeficiency virus; pre=pre-use
 
p Questionnaire administered at end of each product use session, within 10 minutes of completing the product use session (i.e., 4 hours ± 10 minutes) 
q Number of units consumed and duration of gum in mouth 
r Uncontrolled Product Use Sessions only; number of inhalations per cigarette, duration of inhalations [per puff], duration of gum in mouth 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 27 of 65 
 
7.2. 
Discussion of Study Design 
The overall study design is consistent with similar publicly available clinical studies conducted 
with cigarettes, non-combustible nicotine products (i.e., e-cigarettes) or nicotine replacement 
therapy in that it will be conducted using a randomized, cross-over design. This approach 
controls for inter-individual variability with each subject acting as his/her own control (Vansickel 
et al., 2010; McPherson et al., 2016; Stiles et al., 2017). Randomization will be used to avoid 
bias in the assignment of subjects to order of product use, to increase the likelihood that known 
and unknown subject attributes (e.g., demographics and baseline characteristics) are evenly 
balanced across groups, and to enhance the validity of statistical comparisons across groups. 
Subjects will be healthy current combustible manufactured filtered king size cigarette smokers, 
using their own-brand of cigarettes as the positive control. This should serve as the most highly 
reinforcing product for cigarette smokers and is more representative of a “real-world” scenario. 
Consistent with the “continuum of risk” of tobacco and nicotine products, which suggests that 
nicotine replacement therapies provide a lower risk of abuse (Fagerstrom and Eissenberg, 2012), 
addiction and harm relative to combustible cigarettes, this study will also include nicotine 
polacrilex gum as the negative control comparator. Nicotine polacrilex gum has been shown to 
have low to moderate reinforcing effects compared with combustible cigarettes (Stiles et al., 
2017). Although traditional abuse liability studies of pharmaceutical products include a placebo 
comparator, the nature of the products in the current study will be apparent to the subjects, 
therefore, it is not possible to implement a true placebo control. Rather, the study includes both a 
positive and a negative control to test the sensitivity of the model, and to achieve a direct relative 
comparison of the abuse liability of VLN cigarettes to own-brand cigarettes and nicotine 
polacrilex gum.  
The current study will include a pre-specified period of abstinence prior to each study product 
administration day (approximately 20 hours in Part A and prior to controlled-use session in Part 
B, and 6 hours between controlled and uncontrolled-use sessions in Part B) to minimize the 
impact that residual nicotine concentrations may have on baseline pharmacodynamic, PK and 
physiological measurements. Consistent with previously published studies, the current study will 
include an ad libitum product use session, which will allow the subject to use the product as they 
would in a “real-world” scenario with no limitation on amount of product used, for up to 4 hours. 
Controlled and uncontrolled product use sessions are also included in order to compare the 
pharmacodynamic effects and patterns of use under conditions where subjects are instructed on 
how to use the product (i.e., [maximum 3 ± 2 seconds per puff] at approximately 30 ± 5-second 
interpuff intervals) versus how they would use the product in a typical situation.  
The current study will use measures of urge to smoke, positive effects, intent to use the product 
again, and negative effects as proxy measures for the relative reinforcing efficacy of VLN 
cigarettes, own-brand cigarettes and 4 mg nicotine polacrilex gum. The ability of the VLN 
cigarettes to satisfy the urge to smoke over the short term will be assessed using the “Urge to 
Smoke” question in the Tobacco/Nicotine Withdrawal Questionnaire measure and positive 
effects will be assessed using the “Is the product ‘Pleasant’ right now?” question in the Direct 
Effects of Product Questionnaire; both will be administered as 100-point VAS. The “Use Product 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 28 of 65 
 
Again” bipolar VAS has been included at the end of the ad libitum use session in Part A and 90 
minutes after product use in Part B to evaluate overall reinforcement effects of the test products. 
Additional subjective effects will be assessed with “at-the-moment” VAS (Direct Effects of 
Product Questionnaire, Tobacco/Nicotine Withdrawal Questionnaire) during the Controlled and 
Uncontrolled Use Sessions to evaluate the magnitude, onset, and offset of product effects and 
withdrawal symptoms during and after controlled use of the study products. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 29 of 65 
 
8. 
SELECTION OF STUDY POPULATION 
An appropriate number of subjects will be randomized on Day 1 (Part A) to ensure that a 
minimum of 54 subjects complete the study.  
8.1. 
Inclusion Criteria 
Subjects must meet each one of the following inclusion criteria in order to be eligible for 
participation in the study: 
1. Must provide written informed consent prior to the initiation of any protocol-specific 
procedures.  
2. Male and female adults, between 22 to 65 years of age, inclusive. 
3. Body mass index (BMI) within 18.0 to 35.0 kg/m2, inclusive (minimum weight of at least 
50.0 kg at Screening). 
4. Healthy, as determined by no clinically significant medical history, physical examination, 
12-lead ECG, vital signs or laboratory (including hematology, clinical chemistry, 
urinalysis, and serology) findings at Screening, as judged by an investigator. 
5. Smoking history of an average of at least 10 manufactured non-menthol flavored filtered 
standard (i.e., not slim) king size combustible cigarettes daily for at least 1 year prior to 
Screening. Brief periods (i.e., up to 7 consecutive days) of non-smoking during the 3 
months prior to Screening (e.g., due to illness or participation in a study where smoking 
was prohibited) will be permitted. 
6. Self-reporting of desire to smoke within approximately 30 minutes of waking. 
7. Positive urine cotinine (≥500 ng/mL) at Screening. 
8. Negative pregnancy test at Screening and Day -1 (check-in) for all female subjects. 
9. Female subjects of non-childbearing potential must be surgically sterile or 1 year 
postmenopausal (as confirmed by serum Follicle Stimulating Hormone [FSH] > 35 U/L). A 
subject is considered to be surgically sterile if she has had a tubal ligation, hysterectomy, 
bilateral salpingo-oopherectomy or bilateral oopherectomy, or hysterectomy with bilateral 
salpingo-oopherectomy. If the subject is of childbearing potential, she must be using a 
medically accepted method of contraception and agree to continued use of this method for 
the duration of the study and for 30 days after completion of the study. Acceptable methods 
of contraception include abstinence, birth control pill, or an intrauterine device (known to 
have a failure rate of less than 1% per year) or double barrier method of contraception 
(e.g., male condom in addition to a diaphragm, contraceptive sponge or spermicide). 
10. Able to speak, read, and understand English sufficiently to allow completion of all study 
assessments. 
11. Must be willing to comply with the requirements and restrictions of the study. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 30 of 65 
 
8.2. 
Exclusion Criteria 
Subjects will not be eligible to participate in this study if any one of the following exclusion 
criteria is met: 
1. Inability to tolerate 4 mg nicotine polacrilex gum during product use trial on Day -1 (check-
in) or dentition prevents subjects from chewing gum. 
2. History or presence of any clinically significant cardiac, psychiatric, endocrine, hematologic, 
hepatic, immunologic, metabolic, urologic, pulmonary, neurologic, dermatologic, renal, or 
other major disease at Screening, which in the opinion of an investigator would jeopardize 
the safety of the subject or the validity of the study results. 
3. History or presence of any type of malignant tumors. 
4. Clinically significant abnormal findings on the vital signs, physical examination (including 
oral exam), medical history, or clinical laboratory results, in the opinion of an investigator. 
5. Positive serology test results for human immunodeficiency virus (HIV)-1/HIV-2 Antibodies, 
hepatitis B surface antigen (HbsAg), or hepatitis C Antibody (HCVAb). 
6. An acute illness (e.g., upper respiratory infection, viral infection) requiring treatment within 
2 weeks prior to Day -1 (check-in). 
7. Drug or alcohol abuse or dependence within the 24 months prior to Screening (except 
nicotine), as defined by the Diagnostic and Statistical Manual of Mental Disorders, 4th edition 
text revision (DSM-IV-TR), or any self-reported dependence or “addiction” within the 
subject’s lifetime (except nicotine or caffeine). 
8. Subjects who have ever been in treatment for substance use disorder(s) or who are currently 
seeking treatment for substance use disorder(s). 
9. Positive urine drug screen (UDS) or urine alcohol test at Screening or Day -1 (check-in). 
10. History or any current conditions that may interfere with drug absorption, distribution, 
metabolism, or excretion. 
11. History of severe allergic reaction (including anaphylaxis) to any substance, or previous 
status asthmaticus, or food allergies/intolerances/restrictions, or special dietary needs which, 
in the judgment of an investigator, contraindicates the subject’s participation in the study. 
12. Requires concomitant treatment with prescription or non-prescription products that contain 
pseudoephedrine (e.g., nasal/sinus decongestants). 
13. Self-reported use of nicotine polacrilex gum, or other nicotine replacement therapy products 
in the 30 days prior to Day -1 (check-in). Isolated incidents within 30 days prior to Day -1 
(check-in) may be permitted at the discretion of the investigator. 
14. Subject has unsuitable or difficult venous access or is unwilling or unable to undergo direct 
venipuncture or catheter insertion. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 31 of 65 
 
15. Subject has donated or lost 100 to 499 mL whole blood within 30 days or more than 499 mL 
whole blood within 56 days preceding entry into the Confined Assessment Phase.  
16. Subject is an employee of the sponsor or research site personnel directly affiliated with this 
study or their immediate family member defined as a spouse, parent, child or sibling, whether 
biological or legally adopted. 
17. Subject is lactating and or breast feeding. 
18. A subject who, in the opinion of an investigator, is considered unsuitable or unlikely to 
comply with the study protocol for any reason. 
8.3. 
Removal of Subjects from or Assessment 
A subject is free to withdraw his/her consent and discontinue participation in the study at any 
time for any reason.  
A subject may also be discontinued from the study, at the discretion of an investigator and/or 
sponsor, for any of the following reasons:  
▪ Entered the study in violation of the protocol; 
▪ Safety reasons, including AEs; 
▪ Use of unacceptable concomitant medication(s); 
▪ Non-compliance or major protocol violation; 
▪ It is not considered in the best interest of the subject to continue; 
▪ Pregnancy; 
▪ Positive UDS or alcohol test;  
▪ Administrative reasons (e.g., termination of enrollment or study); 
▪ Difficulties with blood collection. 
An investigator must maintain a record of all subjects who discontinue from the study prior to 
completion; the reason(s) for study discontinuation will be documented. In the event that a 
subject chooses to withdraw from the study, an investigator should make a reasonable attempt to 
obtain and record the reason(s) for withdrawal, if possible, although the subject is not obligated 
to provide such a reason.  
In the event that a subject is discontinued while at the clinical site, the early termination 
procedures shown in the Schedule of Assessments (Table 1) should be performed prior to 
discharge from the study site. For any case of early discontinuation (whether or not the subject is 
at the clinical site), an investigator should ask the subject to return to complete the end of study 
procedures, provided that the subject has not withdrawn consent for those procedures. If a 
subject refuses to complete early termination procedures and/or the End of Study Phase, this 
information will be recorded. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 32 of 65 
 
8.4. 
Study Restrictions 
In addition to the inclusion/exclusion criteria described in Section 8, the subject must agree to 
abide by the following study restrictions:  
▪ Subjects will be asked to abstain from alcohol for 48 hours prior to Screening and prior to 
admission to the Confined Assessment Phase until discharge from the Confined 
Assessment Phase. Abstinence will be confirmed via alcohol test. 
▪ Subjects will be asked to abstain from recreational drug use from Screening until 
discharge from the Confined Assessment Phase. Abstinence will be confirmed via UDS. 
▪ Subjects will be asked to abstain from strenuous physical activity for 48 hours prior to 
admission to the Confined Assessment Phase until discharge from the Confined 
Assessment Phase. 
▪ Subjects will be asked to abstain from consuming poppy seeds and grapefruit products 
from 7 days prior to first product use in Part A until discharge from the Confined 
Assessment Phase.  
▪ Subjects will be requested to avoid food or beverages containing xanthines (i.e. tea, 
coffee, cola drinks, energy drinks or chocolate) during the Confined Assessment Phase. 
▪ Subjects will not be permitted to consume beverages of any kind during each controlled 
and uncontrolled product use session in Part B. Water will be permitted in 125 mL 
increments at the discretion of the investigator.  
▪ Subjects will be required to abstain from tobacco or nicotine use for approximately 20 
hours prior to the ad libitum product use on Days 1 to 3 (Part A).  
▪ No tobacco- or nicotine-containing products will be permitted from Day -1 (check-in) 
until the End of Study except during the designated product use sessions.  
▪ Subjects will be asked to refrain from blood donation from Screening until 30 days after 
discharge from the Confined Assessment Phase.  
 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 33 of 65 
 
9. 
MATERIALS 
9.1. 
Study Products 
The following products will be used during the Confined Assessment Phase: 
▪ Product A: VLN cigarette (0.4 mg nicotine/gram of tobacco) 
▪ Product B: Subjects’ Own-brand non-menthol filtered standard king size cigarettes 
(reference product)   
▪ Product C: Nicorette® Original Flavor™ nicotine polacrilex gum (4 mg; reference 
product) 
9.2. 
Identity of Investigational Product(s) 
The VLN cigarettes will be provided by the Sponsor. Subjects will supply their own-brand 
cigarettes with 2 unopened packs (20 cigarettes/pack x 2). The nicotine polacrilex gum will be 
acquired by the study site pharmacy. The study site will coordinate shipping of the study 
products from the Sponsor.  
9.2.1. 
Handling, Storage, and Accountability 
Study products (not including own-brand cigarettes) will be transported, received, stored, and 
handled strictly in accordance with the container or product label, the instructions provided to the 
research site, the site’s standard operating procedures, and applicable regulations. Appropriate 
storage temperature and transportation conditions will be maintained for the study product from 
the point of manufacture up to delivery of the product.  
9.2.2. 
Dispensing and Administration 
Individual study product dispensing records will be maintained by the site pharmacy for each 
subject. Study products for dispensing to subjects will be prepared each day. Fresh packs of 
cigarettes will also be used each study day from which the cigarettes will be provided (Product A 
and Product B). For product use on Days 1 through 3, the pharmacy will maintain records of the 
number of VLN and own-brand cigarettes or nicotine polacrilex gum pieces dispensed for each 
subject. 
Opened and unopened packages of VLN cigarettes and nicotine polacrilex gum products will be 
returned to the Sponsor or destroyed at the direction of the Sponsor. All returns or destruction of 
study products will be documented. Unused subjects’ own-brand cigarettes may be returned to 
subjects at End of Study or Early Termination. 
9.3. 
Method of Assigning Subjects to Study Groups 
Each potential subject will be assigned a unique number in the screening process (subject 
number). This number will be used to identify the subject throughout the study. Algorithme 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 34 of 65 
 
Pharma Inc. will prepare the randomization schedule with a computer program according to the 
study design, the number of subjects and the sequence of product use.  
On Day 1, subjects will be randomized to one of three sequence groups (ABC, BCA, CAB, 
where A = VLN cigarette, B=subject’s own-brand cigarette; and C= nicotine polacrilex gum), 
with approximately the same number of subjects per sequence group. On Day 4, subjects will be 
re-randomized into one of three sequence groups (ABC, BCA, CAB), with approximately the 
same number of subjects per sequence group.   
9.4. 
Selection and Timing of Product Use 
First product administration will occur in the morning on each study day (Days 1 through 6), 
after approximately 20 hours of nicotine abstinence. Subjects will be segregated in different 
areas of the facility based on the product that they are receiving so that odors and sight of 
products will not interfere with the subjects’ assessments. 
9.4.1. 
Part A (Days 1 to 3) 
On each of the 3 days, subjects will use only one of the 3 study products according to their 
randomization sequence. No other use of tobacco- or nicotine-containing products will be 
allowed from check-in on Day -1 through to End of Study discharge except as required by this 
protocol, and subjects will be instructed to not bring to the study site any form of tobacco- or 
nicotine-containing products except 2 packs of their own cigarettes. 
9.4.1.1. 
Product A: VLN Cigarettes 
Subjects will be assigned an unopened pack of VLN cigarettes. They will be presented to the 
subjects unbranded. Subjects will have open access to the cigarettes and may smoke the 
cigarettes as desired during the 4-hour session. Study staff will record the number of cigarettes 
dispensed, time dispensed, and number of butts returned.  
9.4.1.2. 
Product B: Own-brand Cigarettes 
Subjects will be assigned an unopened pack of their own-brand cigarettes. Subjects will have 
open access to the cigarettes and may smoke the cigarettes as desired during the 4-hour session. 
Clinic staff will record the number of cigarettes dispensed, time dispensed, and number of butts 
returned. 
9.4.1.3. 
Nicotine Polacrilex Gum 
Subjects will be assigned unopened pack of 4 mg nicotine polacrilex gum. Subjects will have 
open access to nicotine polacrilex gum and may chew the gum as desired during the 4-hour 
session. Clinic staff will record the number of gum pieces dispensed to subjects and will record 
the amount of time subjects used each piece of gum by documenting the time dispensed and time 
discarded. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 35 of 65 
 
9.4.2. 
Part B (Days 4 to 6) 
On each of the 3 days, subjects will use only one of the 3 study products according to their 
randomization sequences. No other use of tobacco- or nicotine-containing products will be 
allowed. 
9.4.2.1. 
Product A: VLN Cigarettes 
During the first product use session (i.e., Controlled Use), subjects will take 10 puffs of one of 
the VLN cigarettes at approximately 30-second intervals (± 5 seconds) based off the start of 
inhalation, inhalation duration will not exceed 3 ± 2 seconds per puff. The clinic staff will 
indicate to the subjects when to start each inhalation at each 30-second interval, will document 
the total number of inhalations (if less than 10) and any reasons for missed inhalations. During 
the second product use session (i.e., uncontrolled use), subjects will smoke one VLN cigarette ad 
libitum for 10 minutes and the clinic staff will document the total number of inhalations and the 
duration of inhalations. The used butts may be discarded after adequate accountability has been 
completed. 
9.4.2.2. 
Product B: Own-brand Cigarettes 
During the first product use session (i.e., Controlled Use), subjects will take 10 puffs of one of 
their own-brand cigarettes at approximately 30-second intervals (± 5 seconds) based off the start 
of inhalation, inhalation duration will not exceed 3 ± 2 seconds per puff. The clinic staff will 
indicate to the subjects when to start each inhalation at each 30-second interval, will document 
the total number of inhalations (if less than 10) and any reasons for missed inhalations. During 
the second product use session (i.e., Uncontrolled Use), subjects will smoke one own-brand 
cigarette ad libitum for 10 minutes and the clinic staff will document the total number of 
inhalations and the duration of inhalations. The used butts may be discarded after adequate 
accountability has been completed. 
9.4.2.3. 
Product C: Nicotine Polacrilex Gum 
During the first product use session (i.e., Controlled Use), subjects will chew the 4 mg nicotine 
polacrilex gum product according to the package instructions: The gum is to be chewed slowly 
until a tingling sensation is felt in the mouth, “parked” between the cheek and gum until the 
tingling sensation subsides, and then resume chewing. Subjects will follow this chewing regimen 
for the 10-minute product use session. During the second product use session (i.e., Uncontrolled 
Use), subjects will chew the nicotine polacrilex ad libitum for 10 minutes. The chewed gum may 
be discarded upon completion of each product use session, after adequate accountability has been 
completed. 
9.5. 
Meal Schedule 
On Day -1, meals and snacks will be served at appropriate times as determined by the clinic 
based on the time of Check-in. Standard meals will be served on Days 1 to 3.  
Subjects will be served a light breakfast each morning and must complete breakfasts on the 
mornings of Days 4 to 6 at least 1 hour prior to the first study product use session. The breakfast 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 36 of 65 
 
menu should be consistent (same menu items) on Days 4 to 6. Lunch, dinner, and snacks will be 
served at appropriate times as determined by the study site, with lunch scheduled to be served at 
some point after completion of the final blood draw of the first product use session or end of the 
ad libitum session on each day. 
Subjects may not consume beverages of any kind during each Controlled and Uncontrolled 
Product Use Session on Days 4 to 6. Water will be provided in 125 mL increments at the 
discretion of the investigator.  
Subjects will also be permitted to consume hard candy during the confinement period at the 
discretion of the investigator. Hard candy will not be permitted during any product use sessions 
in Part A or Part B. 
Fasting requirements and dietary restrictions are described in Section 8.4. 
9.6. 
Blinding 
The study design is not blinded since subjects will know if the product is a VLN cigarette, their 
own cigarette or a nicotine polacrilex gum. The study product codes will be open to all study 
staff and to the Sponsor. The randomization code will not be available to the personnel of the 
bioanalytical facility until the bioanalytical tables have been finalized and audited by the Quality 
Assurance (QA) department. 
9.7. 
Prior and Concomitant Therapy 
All medications, including prescription, over-the-counter, or herbal therapies used by the subjects 
will be documented for the 30 days prior to Screening and throughout the study. An investigator 
will determine if the prior/concomitant medication(s) affect the subject’s eligibility to participate 
or continue to participate in the study.  
On a case-by-case basis, an investigator is permitted to allow the use of some concomitant 
medications, for example, to treat an AE, as long as an investigator determines that the 
medication will not affect the subject’s safety or study integrity (e.g., topical medications). 
Wherever possible, an investigator should obtain approval from the Sponsor’s medical monitor 
prior to administering the medication. Stable doses (i.e., no dosage adjustments within 30 days 
prior to Day -1) of prescription or over-the-counter medications required to treat an investigator-
approved disease or condition will be permitted at the discretion of an investigator.  
9.8. 
Product Compliance 
Study products will be administered under the supervision of study personnel, and compliance 
with protocol-specified procedures during the Controlled Use Sessions will be monitored by 
study personnel. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 37 of 65 
 
10. 
STUDY PROCEDURES AND ASSESSMENTS 
All study assessments will be performed at the visits and timepoints outlined in the Schedule of 
Assessments (Table 1); the following sections outline the details and procedures associated with 
the assessments. Other logistical considerations (e.g., sequence of events, assessment windows) 
will be outlined in study-specific procedures.  
10.1. 
Demographics and Other Baseline Characteristics 
10.1.1. 
Informed Consent 
The nature of the study and its risks and benefits will be explained to the subject by an 
investigator or designated study personnel. The subject must provide written informed consent 
on an ethics-approved informed consent form (ICF), prior to performing any study-related 
procedures. A copy of the ICF will be provided to the subject. 
10.1.2. 
Demographics 
The following demographics will be recorded: age (birthdate), sex, race, and ethnicity.  
10.1.3. 
Medical History 
The complete medical history will include histories of acute, chronic, or infectious disease; 
surgical or oncologic histories; and any reported conditions affecting major body systems. All 
findings on medical history will be evaluated by an investigator for clinical significance. Medical 
histories will be obtained according to the site’s standard operating procedures. 
10.1.4. 
Medication and Smoking History  
All medications (prescription and non-prescription, herbal medications/natural health products, 
or investigational drugs) taken by the subjects during the 30 days prior to Screening will be 
recorded in the source documentation as medication history.  
A history of tobacco use/history and smoking history will be recorded for each subject.  
DSM-IV-TR modules will be included as a part of the recreational drug/alcohol use history and 
used to screen for alcohol and substance dependence. 
10.2. 
Pharmacodynamic Measures 
On Day -1, subjects will complete a training session during which they will complete the 
subjective questionnaires in order to familiarize themselves with the questions, appropriate use 
of the VAS, and use of the computerized tablet system. 
10.2.1. 
Tobacco/Nicotine Withdrawal Scale 
The Tobacco/Nicotine Withdrawal items are administered as 100 point VAS, and are intended to 
measure withdrawal symptoms and craving (adapted from Hughes & Hatsukami, 1986; 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 38 of 65 
 
Appendix 17.2.1). The VAS is anchored with “Not at All” on the left and “Extremely” on the 
right. The questionnaire items are as follows: 
1. Urges to Smoke  
2. Anxious 
3. Difficulty Concentrating 
4. Impatient 
5. Craving a Cigarette 
10.2.2. 
Direct Effects of Product Questionnaire 
The Direct Effects of Product items are administered as 100 point VAS, and are intended to 
measure the effects of the product being sampled at the moment (Appendix 17.2.2). The VAS is 
anchored with “Not at All” on the left and “Extremely” on the right. The questionnaire items are 
as follows: 
1. Is the product “Pleasant” right now? 
2. Is the product “Satisfying” right now? 
3. Is the product making you feel “Calm” right now? 
4. Is the product helping you “Concentrate” right now? 
5. Is the product making you feel more “Awake” right now? 
6. Is the product making you feel “Sick” right now? 
7. Is the product reducing your “Hunger” for food right now? 
8. Would you like “More” of the product right now? 
Items are selected based on measures of product effects used in previous trials with tobacco 
products and conventional cigarettes (Hanson, Connor & Hatsukami 2009).  
10.2.3. 
Use the Product Again Questionnaire 
The Use the Product Again questionnaire is a bipolar 100 point VAS used to assess how much a 
subject would be willing to use the sampled product again (Appendix 17.2.3). The VAS is 
anchored by “Definitely Would Not” on the left and “Definitely Would” on the right; the neutral 
point is also labeled with an anchor (“Don’t Care”). The VAS is adapted from the Take Drug 
Again VAS administered in human abuse potential studies of pharmaceutical products (Griffiths, 
Bigelow & Ator, 2003).  
10.2.4. 
Product Use 
Number of own-brand cigarettes and VLN cigarettes smoked and number of nicotine polacrilex 
gum pieces chewed and duration of gum in mouth will be recorded during the ad libitum product 
use sessions in Part A. During the Uncontrolled Use Sessions in Part B, number of inhalations 
and duration of each inhalation will be recorded for own-brand cigarettes and VLN cigarettes; 
duration of gum in mouth will be recorded for nicotine polacrilex gum. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 39 of 65 
 
10.3. 
Safety Assessments 
10.3.1. 
Adverse Events and Serious Adverse Events  
An investigator and research site staff are responsible for the detection, documentation, 
classification, reporting, and follow-up of events meeting the definition of an AE or serious 
adverse event (SAE). All AEs will be recorded following informed consent (at Screening) until 
the End of Study (or the required follow up period for a specific AE or SAE).  
10.3.1.1. Adverse Events 
An AE is any untoward medical occurrence in a clinical investigation subject administered a 
product and may not necessarily have a causal relationship with the administered treatment. An 
AE can, therefore, be any unfavorable and unintended sign (including a clinically significant 
laboratory abnormality), symptom, or disease temporally associated with the use of an 
investigational product, whether or not related to the investigational product. During the study, 
an AE can also occur outside the time that the investigational product(s) was given (e.g., during a 
washout period). Pre-existing conditions, diseases, or disorders are not considered AEs unless 
there is a change in intensity, frequency, or quality. 
10.3.1.2. Serious Adverse Events and Serious Unexpected Adverse Events 
An SAE is any untoward medical occurrence that at any product use: 
▪ Results in death; 
▪ Is life-threatening (at the time of the event); 
▪ Requires inpatient hospitalization or prolongation of existing hospitalization; 
▪ Results in persistent or significant disability/incapacity; or 
▪ Is a congenital anomaly/birth defect. 
Important medical events that may not result in death, be life-threatening, or require 
hospitalization may be considered a serious adverse product experience when, based upon 
appropriate medical judgment, they may jeopardize the study subject and may require medical or 
surgical intervention to prevent one of the outcomes listed in the definition. Examples of such 
medical events include allergic bronchospasm requiring intensive treatment in an emergency 
room or at home, blood dyscrasias or convulsions that do not result in inpatient hospitalization, 
or the development of drug dependency or drug abuse. 
A serious and unexpected AE is an SAE that is not identified in nature, intensity, or frequency in 
the risk information generally known for nicotine gum and cigarettes. 
Any SAE—expected or unexpected, irrespective of relationship to study treatments, including 
death due to any cause—experienced by a study subject will be reported to 22nd Century Inc. or 
designee by an investigator within 24 hours of learning of the event. Information regarding the 
SAE will be transmitted to 22nd Century Inc. or designee, as follows: 
James Swauger 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 40 of 65 
 
22nd Century Group, Inc. 
8560 Main Street 
Williamsville, NY 14221  
Email:
 
 
22nd Century Inc. or designee assumes responsibility for appropriate reporting of AEs to the 
regulatory authorities. 22nd Century Inc. or designee will also report to an investigator all SAEs 
that are unlisted and associated with product use. The investigator (or 22nd Century Inc., where 
required) must report these events to the appropriate Institutional Review Board (IRB) that 
approved the protocol (unless otherwise required and documented by the IRB). Follow-up 
evaluations for SAEs will also be reported to 22nd Century Inc. or designee. 
10.3.1.3. Clinical Laboratory Abnormalities and Other Abnormal Assessments 
Abnormal clinical laboratory findings (e.g., clinical chemistry, hematology, or urinalysis) or 
other abnormal assessments (e.g., from vital signs or ECG), judged as clinically significant by an 
investigator will be recorded as AEs or SAEs, if they meet the definitions provided previously. 
Abnormal laboratory or other findings present at baseline that significantly worsen following the 
start of the study will be reported as AEs or SAEs. However, abnormal findings present at the 
start of the study that do not worsen will not be reported as AEs or SAEs, unless an investigator 
or designee judges them as more severe than expected for the subject’s condition.  
10.3.1.4. Classification of Adverse Event Intensity and Causality 
For each recorded AE or SAE, an investigator must make an assessment of intensity based on the 
following criteria: 
Mild: 
An event that is usually transient and may require only minimal treatment 
or therapeutic intervention. The event does not generally interfere with 
usual activities of daily living. 
Moderate: 
An event that is alleviated with additional specific therapeutic 
intervention. The event interferes with usual activities of daily living, 
causing discomfort but poses no significant or permanent risk of harm to 
the subject. 
Severe: 
 
An event that requires intensive therapeutic intervention. The event 
interrupts usual activities of daily living or significantly affects clinical 
status. The event poses a significant risk of harm to the subject and 
hospitalization may be required. 
An investigator must make an assessment of causality based on the following criteria to 
determine the relationship between the AE/SAE and study product: 
(b) (6)

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 41 of 65 
 
Unrelated: 
Clearly and incontrovertibly due only to extraneous causes (e.g., disease, 
environment, etc.) and does not meet the criteria for study product 
relationship listed under probable, possible, or unlikely. 
Unlikely: 
▪ Does not follow a reasonable temporal sequence from 
administration of the study product;  
▪ May readily have been produced by the subject’s clinical state, 
environmental, or toxic factors, or other modes of therapy 
administered to the subject;  
▪ Does not follow a known pattern of response to the study product;  
▪ Does not reappear or worsen when the product is used again. 
Possible: 
The connection to the product appears unlikely but cannot be ruled out with 
certainty: 
▪ Follows a reasonable temporal sequence from administration of the 
study product; 
▪ May have been produced by the subject’s clinical state, 
environmental, or toxic factors, or other modes of therapy 
administered to the subject; 
▪ Follows a pattern of response to the suspected study product. 
Probable: 
The connection to the product can be made with a high degree of certainty: 
▪ Follows a reasonable temporal sequence from administration of the 
study product; 
▪ Cannot be reasonably explained by the known characteristics of the 
subject’s clinical state, environmental, or toxic factors, or other 
modes of therapy administered to the subject;  
▪ Disappears or decreases upon cessation or reduction in use of the 
product (note that there are important exceptions when an AE or 
SAE does not disappear upon discontinuation of use the study 
product, yet relatedness to study product clearly exists, e.g., bone 
marrow depression or tardive dyskinesias);  
▪ Follows a known pattern of response to the study product; 
▪ Reappears upon re-challenge. 
 
10.3.1.5. Follow-up of Adverse Events and Serious Adverse Events 
All unresolved AEs will be followed for a minimum of 14 days after the subject’s final Study 
Day, unless an investigator’s judgment dictates otherwise, the event has resolved or stabilized 
before the 14-day period, or the subject is lost to follow-up.  

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 42 of 65 
 
All AEs that result in discontinuation and SAEs will be followed until the event resolves, 
stabilizes (according to the judgment of an investigator), returns to a baseline value (if a baseline 
value is available), or can be attributed to agents other than the study product or to factors 
unrelated to study conduct. 
When it becomes unlikely that any additional information can be obtained (e.g., subject or health 
care practitioner refuses to provide additional information, the subject is lost to follow-up), an 
investigator or designee will ensure that the follow-up includes any pertinent supplemental 
investigations (e.g., laboratory tests or investigations, histopathological examinations or 
consultation with other health care professionals) to elucidate the nature and/or causality of the 
AE or SAE. 
Investigators are not obligated to actively seek AEs or SAEs in former study subjects that occur 
following the AE or SAE Follow-up period. However, if an investigator learns of any AE or SAE 
at any time after a subject has been discharged from the study and the event is considered as 
reasonably related to the study product, an investigator will notify 22nd Century Inc. 
For each recorded AE or SAE, an investigator must make an assessment of outcome at the time 
of last observation, as follows: 
Fatal: 
The subject died. 
Resolved 
The AE or SAE has ended. 
Resolved with 
Sequelae 
The AE or SAE has ended but changes are noted from baseline. 
Unresolved – 
Ongoing: 
The AE or SAE has not ended and is ongoing at the end of the 
reporting period (i.e., 14 days after the final Study Day) and an 
investigator deems that further follow up is not medically required 
Unresolved – Lost to 
Follow: 
Lost to follow-up after repeated unsuccessful attempts to contact the 
subject. 
10.3.2. 
Pregnancy 
If a subject becomes pregnant during the study or for 14 days after the final Study Day, an 
investigator will report the pregnancy to 22nd Century Inc. or designee within 24 hours of 
learning of the event. Any subject who becomes pregnant during the study will be immediately 
withdrawn from the study.  
Follow-up information will be obtained where possible (with the consent of the subject or their 
partner) regarding the course and outcome of the pregnancy, including any post-natal sequelae in 
the infant. 
10.3.3. 
Clinical Laboratory Assessments 
Blood and urine samples will be collected, processed, and shipped according to the research 
site’s standard operating procedures and instructions from the safety laboratory. Samples will be 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 43 of 65 
 
segregated in such a way as to minimize the impact of the potential loss of samples during 
shipping. All clinical laboratory data will be reviewed by an investigator for clinical significance. 
Blood volumes required per draw, laboratory test, and study phase are available in Appendix 
17.1. Additional laboratory samples may be taken at the discretion of an investigator if the results 
of any tests fall outside reference ranges or clinical symptoms necessitate testing to ensure safety. 
Specific hematology, biochemistry, and urinalysis assessments are listed in Table 2. 
Table 2: Clinical Laboratory Assessments  
Hematology 
Biochemistry 
Urinalysis 
Hematocrit 
Hemoglobin 
Red blood cell count 
Total and differential (absolute) 
white blood cell count 
Platelets 
Sodium 
Potassium 
Glucose (random) 
Creatinine 
Total protein 
Blood urea nitrogen  
Albumin 
Total bilirubin 
Alanine transferase  
Aspartate transferase  
Lactic dehydrogenase  
Gamma-glutamyl transferase  
Alkaline phosphatase  
Creatine phosphokinase  
FSH a  
Color 
pH 
Specific gravity 
Ketones 
Protein 
Glucose 
Bilirubin 
Nitrite 
Urobilinogen 
Occult blood 
Microscopic examination of 
sediment, only if urinalysis 
dipstick results are abnormal 
 
 
a Postmenopausal women at Screening only. 
 
In addition to the clinical laboratory tests, pregnancy testing for the presence of β-human 
chorionic gonadotropin in serum or urine will be performed for all women. Results of serum or 
urine pregnancy tests will be reported and determined to be negative prior to study continuation. 
A blood sample for a serology panel testing for hepatitis B surface antigen (HbsAg), anti-
hepatitis C antibodies (HCVAb), and human immunodeficiency virus (HIV) will be performed 
for all subjects. Only subjects with negative viral serology tests will be eligible for the study. 
Positive results will be managed according to local regulatory requirements and the site’s 
standard operating procedures. 
10.3.4. 
Urine Drug Screen and Alcohol Testing 
Urine drug screens will test for the following drugs of abuse: tetrahydrocannabinol (THC), 
opioids, amphetamines, cocaine, and benzodiazepines. The opioid panel will include morphine, 
codeine, heroin, hydrocodone, hydromorphone, and oxycodone.   

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 44 of 65 
 
Urine alcohol and cotinine testing will be performed according to the site's standard operating 
procedures. If there is any doubt or concern regarding alcohol use, research site staff may request 
a test for alcohol measures at any time during the study.  
10.3.5. 
Vital Signs 
Vital signs will consist of blood pressure (systolic and diastolic blood pressure, mmHg), pulse 
rate (beats per minute), and respiratory rate (breaths/min). Oral temperature (°C) will also be 
taken at some time points, as specified in Table 1. Vitals signs will be collected and managed 
according to the site’s standard operating procedures. 
10.3.6. 
12-lead Electrocardiograms 
ECGs will be performed after the subject has been resting in a recumbent/supine position for at 
least 3 minutes. The ECG variables will include ventricular heart rate and the PR, QRS, QT, 
QTcB and QTcF intervals. 12-lead ECGs will be performed and interpreted according to the 
site’s standard operating procedures. 
10.3.7. 
Physical Examination 
A complete physical examination, assessing the subject’s overall health and physical condition, 
will be performed at Screening according to the site’s standard operating procedures. A brief, 
symptom-driven physical will be conducted on Day -1 and End of Study Day 6.  
Height, weight and BMI will be assessed as described in Table 1. 
10.4. 
Pharmacokinetic Assessments 
Venous blood samples will be collected to determine the plasma concentrations of nicotine at the 
timepoints outlined in the Schedule of Assessments (Table 1). Samples will be collected, 
processed, and shipped according to the site's standard operating procedures and instructions 
from the sponsor or bioanalytical laboratory. The time of blood sample collection will be 
calculated according to the start of product use of each session (Controlled and Uncontrolled).  
Blood volumes required for PK sampling are available in Appendix 17.1. 
The plasma samples will be analyzed by Algorithme Pharma Inc. using validated methods.  
Plasma samples will be shipped frozen on dry ice from the research site to the following address:  
Algorithme Pharma Inc., An Altasciences Company  
575 Armand-Frappier Blvd. 
Laval, Quebec, Canada 
H7V 4B3 
Samples will not be shipped without prior arrangement with the bioanalytical laboratory and/or 
notification to the Sponsor.  
 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 45 of 65 
 
10.5. 
Appropriateness of Measures 
The selection of abuse liability measures in this study, including the primary endpoints of “Urges 
to Smoke” and “Pleasant” Emax during the Controlled Use Session are consistent with previous 
studies of this type. The Use the Product Again VAS is being used as this is thought to indicate 
the subject’s willingness to use the product again and to reflect the user’s overall impression of 
the product. Other subscales of the Tobacco/Nicotine Withdrawal Questionnaire and the Direct 
Effects of Product Questionnaire will measure positive, negative and other subjective effects 
including craving to assess the subjective effects of the products for comparative purposes. 
Measures of product use behavior have been included during the ad libitum sessions and the 
Uncontrolled Use Sessions in order to evaluate the amount and duration of product used under 
both conditions. 
Standard safety assessments have been included to evaluate the safety profile of VLN cigarettes. 
PK blood sampling has been included to evaluate the PK profile of nicotine following controlled 
and uncontrolled use of VLN cigarettes, in comparison with own-brand cigarettes and nicotine 
polacrilex gum. 
10.6. 
Pharmacodynamic Variables 
10.6.1. 
Primary Pharmacodynamic Endpoints 
The primary endpoints of this study are as follows: 
▪ Controlled Product Use (Part B) 
o Emax_urge(controlled): The maximum reduction in VAS score for the question “Urges to 
smoke” (Tobacco/Nicotine Withdrawal Questionnaire) between pre-use and post-use 
(i.e., VASpre-use1 – VASpost-use1) during the first product use in Part B. 
o Emax_plst(controlled): The largest VAS score recorded for the response to the question “Is 
the product “Pleasant” right now?” (Direct Effects of Product Questionnaire) during 
the first product use in Part B. 
10.6.2. 
Secondary Endpoints 
The secondary endpoints of this study are as follows: 
▪ Ad libitum Product Use (Part A) 
o Use the Product Again VAS score  
o Product use behavior (number of units consumed, time spent per unit, number of 
inhalations per cigarette, duration of gum in mouth) 
▪ Controlled and Uncontrolled Product Use (Part B) 
o Tobacco/Nicotine Withdrawal Questionnaire 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 46 of 65 
 
▪ 
Emax_item(controlled): The maximum reduction in VAS score for each itema 
between pre-use and post-use (i.e., VASpre-use1 – VASpost-use1) during the 
first product use in Part B. 
▪  Emax_item(uncontrolled): The maximum reduction in VAS score for each item 
between pre-use and post-use (i.e., VASpre-use2 – VASpost-use2) during the 
second product use in Part B. 
o Direct Effects of Product Questionnaire 
▪ Emax_item(controlled): The largest VAS score recorded for the response to each 
itemb during the first product use in Part B. 
▪ Emax_item(uncontrolled): The largest VAS score recorded for the response to 
each item during the second product use in Part B. 
o Product use behavior (Uncontrolled Use Sessions; number of inhalations, duration 
of inhalations [per puff], duration of gum in mouth). 
10.7. 
Pharmacokinetic Variables  
The PK parameters of nicotine will include, but are not limited to, the following: 
▪ Cmax(controlled): Maximum measured plasma nicotine concentration during the Controlled 
Use Session. 
▪ Cmax(uncontrolled): Maximum measured plasma nicotine concentration during the 
Uncontrolled Use Session. 
▪ AUC(controlled): Area under the nicotine concentration-time curve calculated using linear 
trapezoidal summation from time zero (defined as the start of controlled use) to 180 
minutes (or the last quantifiable concentration during that interval). 
▪ AUC(uncontrolled): Area under the nicotine concentration-time curve calculated using linear 
trapezoidal summation from time 360 (defined as the start of uncontrolled use) to 540 
minutes (or the last quantifiable concentration during that interval). 
▪ Tmax(controlled): Time of the maximum measured plasma nicotine concentration during the 
Controlled Use Session.  
▪ Tmax(uncontrolled): Time of the maximum measured plasma nicotine concentration during the 
Uncontrolled Use Session.  
▪ Kel(controlled): Apparent first-order terminal nicotine elimination rate constant calculated 
from a semi-log plot of the plasma concentration-time curve of the Controlled Use 
Session.  
 
a Tobacco/Nicotine Withdrawal Questionnaire items (secondary): Emax_urge (uncontrolled only), Emax_anx, Emax_diffct, 
Emax_impat, and Emax_crav. 
b Direct Effects of Product Questionnaire items (secondary): Emax_plst (uncontrolled only), Emax_stf, Emax_calm, Emax_conc, 
Emax_awake, Emax_sick, Emax_hunger, and Emax_more. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 47 of 65 
 
▪ Kel(uncontrolled): Apparent first-order terminal nicotine elimination rate constant calculated 
from a semi-log plot of the Uncontrolled Use Session.  
▪ T½(controlled): Apparent first-order terminal nicotine elimination half-life calculated as 
0.693/Kel of the plasma concentration-time curve from time zero (defined as the start of 
controlled use) to 180 minutes. 
▪ T½(uncontrolled): Apparent first-order terminal nicotine elimination half-life calculated as 
0.693/Kel of the plasma concentration-time curve from time zero (defined as the start of 
uncontrolled use) to 540 minutes. 
10.8. 
Safety Variables 
The safety endpoints include the following: 
▪ AEs (incidence, frequency, severity and relationship to product), SAEs, and AEs leading 
to discontinuation; 
▪ Vital signs (heart rate, blood pressure, respiratory rate, oral temperature); 
▪ 12-lead ECG; 
▪ Clinical laboratory tests (clinical chemistry, hematology, urinalysis); 
▪ Physical examination findings; 
▪ Concomitant medications. 
 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 48 of 65 
 
11. 
DATA QUALITY ASSURANCE 
This study will be conducted under Good Clinical Practice (GCP) and all applicable regulatory 
requirements. To ensure compliance, the Sponsor or designee may conduct a quality assurance 
audit, as outlined in Section 11.2.  
Actions to ensure the accuracy and reliability of data include the selection of qualified 
Investigators and appropriate study centers; the review of protocol procedures with an 
investigator and study personnel prior to study start; the design of suitable source documents 
with appropriate instructions for use (where applicable); the internal audit of source data 
according to GCP and internal procedures to ensure their accuracy, completeness, and 
verifiability; as well as the periodic site monitoring by the Sponsor. Written instructions will be 
provided for collection, preparation, and shipment of blood, plasma, and urine samples. The 
Sponsor or designee will review source documents for accuracy and completeness during on-site 
monitoring visits and after their return to the Sponsor; any discrepancies will be resolved with an 
investigator, as appropriate.  
Significant and/or repeated non-compliance will be investigated, and remedial action instituted 
when appropriate. Failure to comply with remedial actions may result in investigator site 
termination and regulatory authority notification. 
11.1. 
Data Collection  
Source documents include but are not limited to original documents, data and records such as 
hospital/medical records (including electronic health records), clinic charts, lab results, subject 
diaries, data recorded in automated instruments, microfilm or magnetic media, and pharmacy 
records, etc. This study will use electronic data capture (EDC) or paper case report forms 
(CRFs). At a minimum, all data required by the protocol should have supporting source 
documentation for entries in the EDC system, unless that data can be recorded directly in the 
EDC system or other device. 
All CRFs will be completed by the site staff prior to review by the Sponsor’s monitor or 
designated representative. The Sponsor’s monitor or designated representative will review all 
source records on-site and compare them to the data collected on the CRF. All entries, 
corrections, and alterations will be made by an investigator or other authorized study personnel. 
All data entries will be verified for accuracy and correctness by independent monitors. The EDC 
system maintains a full audit trail.  
11.2. 
Study Auditing and Monitoring 
Monitoring of the study site (including, but not limited to, reviewing CRFs for accuracy and 
completeness) will be performed by the Sponsor’s monitor. The extent, nature, and frequency of 
on-site visits will be based on such considerations as the study objectives and/or endpoints, the 
purpose of the study, study design complexity, and enrollment rate. By signing the protocol, an 
investigator agrees that, within local regulatory restrictions and institutional and ethical 
considerations, authorized representatives of the Sponsor, a regulatory authority, and/or an IRB 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 49 of 65 
 
may visit the site to perform audits or inspections, including the product storage area, study 
product stocks, product accountability records, subject charts and source documents, and other 
records related to study conduct. The purpose of the Sponsor audit or inspection is to 
systematically and independently examine all study-related activities and documents to 
determine whether the study-related activities were conducted, and data recorded, analyzed, and 
accurately reported according to the protocol, the site’s standard operating procedures, GCP 
guidelines of the International Conference on Harmonisation (ICH), and any applicable 
regulatory requirements.  An investigator should contact the Sponsor immediately if contacted by 
a regulatory agency regarding an inspection. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 50 of 65 
 
12. 
STATISTICAL METHODS AND DETERMINATION OF 
SAMPLE SIZE 
12.1. 
Statistical and Analytical Plans 
Complete details of the statistical analyses to be performed will be documented in a statistical 
analysis plan (SAP), which will be finalized prior to completion of the study. This document will 
include more detail of analysis populations, summary strategies, and any amendments to the 
proposed analyses listed here, if necessary. Any changes to the SAP will be outlined in the final 
study report. 
12.2. 
Determination of Sample Size 
Sample size estimation was performed on both pharmacodynamic endpoints. 
Using a 2-sided Type I error rate at α=0.05 and assuming a mean difference in Emax_urge(controlled) 
between own-brand cigarette and nicotine polacrilex gum of 15.85 points and standard deviation 
(SD) of 28.44, 54 completed subjects will be required to detect a significant difference between 
own-brand cigarette and nicotine polacrilex gum with greater than 80% power. 
Using a 2-sided Type I error rate at α=0.05 and assuming a mean difference in Emax_plst(controlled) 
between own-brand cigarette and nicotine polacrilex gum of 35.21 points and SD of 31.82, 
estimate based on data obtained from the study site, 16 completed subjects will be adequate to 
detect a significant difference between own-brand cigarette and nicotine polacrilex gum with 
greater than 80% power. 
An appropriate number of subjects will be randomized on Day 1 (Part A) to ensure that a 
minimum of 54 subjects complete the study. Replacement subjects may be enrolled to ensure 
that the minimum number of subjects complete the study.  
12.3. 
Analysis Populations 
The study analysis populations will consist of 
▪ Randomized Population (Part A): All subjects who are randomized into Part A.  
▪ Randomized Population (Part B): All subjects who are randomized into Part B.  
▪ Safety Population: All randomized subjects who use at least one of the study products. 
This will include Day -1 (Check-In and product trial) and study days after the 
randomization. The Safety Population will be used for the summary of subject 
demographics, baseline characteristics, safety information and AEs.  
▪ Pharmacodynamic Population: All subjects who use any study product and have pre-
use (Tobacco/Nicotine Withdrawal questionnaire) and at least one post-use (for 
Tobacco/Nicotine Withdrawal and Direct Effects of Product) VAS score for the 
Controlled Use Session of Part B. This population will be used for statistical analyses of 
the pharmacodynamic measures. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 51 of 65 
 
▪ Pharmacokinetic Population: All subjects who use any study product and have pre- and 
at least one post-use plasma concentration value for the Controlled Use Session of Part B. 
The PK Population will be used for statistical analyses of the PK parameters. 
▪ Completer Population: All randomized subjects who complete all product use sessions 
and have pharmacodynamic and PK data in the Controlled Use Session of Part B. This 
dataset will be used for analyses of the two primary pharmacodynamic endpoints as a 
sensitivity analyses to the primary analyses. 
12.4. 
Planned Analyses 
12.4.1. 
Subject Disposition 
Disposition of each analysis population will be summarized using descriptive statistics. Data 
from subjects who discontinue from the study will also be summarized by last product used and 
reason for discontinuation. 
12.4.2. 
Demographics and Other Baseline Characteristics 
Descriptive statistics will be reported for continuous demographic variables (age, weight, height, 
and BMI) and frequency counts will be tabulated for categorical demographics variables (gender, 
ethnicity, and race). In addition, number of cigarettes smoked per day, as well as the duration of 
tobacco use (derived as the interval between tobacco use start date and the ICF signature date), 
will be summarized by descriptive statistics. Responses for smoking history and number of 
tobacco products used per day will be listed in the substance usage listing. 
12.4.3. 
Analysis of Pharmacodynamic Measures 
12.4.3.1. Part A 
Responses to Use the Product Again VAS will be summarized by study product using descriptive 
statistics (n, mean, SD, median, Q1, Q3, min, max). A summary table of frequencies may also be 
provided.  
Descriptive statistics (n, mean, SD, median, Q1, Q3, min, max) will be provided for amount of 
product used by product (number of cigarettes for own-brand and VLN cigarettes, and number of 
nicotine gum pieces), duration of time used (time spent per cigarette and duration of gum in 
mouth), and number of inhalations (puffs) per cigarette for own-brand and VLN cigarettes. 
12.4.3.2. Part B 
Responses to each Tobacco/Nicotine Withdrawal Questionnaire and Direct Effects of Product 
Questionnaire item will be summarized by time point for each study product, and product use 
condition. For Tobacco/Nicotine Withdrawal VAS scores, descriptive statistics (n, mean, SD, 
median, Q1, Q3, min, max) for the difference from pre-use at each time point will also be 
reported. Derived parameters (Emax) for each questionnaire item will be summarized using 
descriptive statistics. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 52 of 65 
 
A linear mixed effects model for analysis of variance/covariance (Proc Mixed) will be performed 
on Emax_urge(controlled) and Emax_plst(controlled). The model will include Emax as the response variable, 
sequence, study product, and period as fixed model effects, baseline score as a covariate (for 
Emax_urge only), and subject nested-within sequence as a random effect. Sequence will be tested 
using subject nested-within-sequence as the error term. Least square mean (LSM) and 95% 
confidence interval (CI) for each Study Product group will be provided. Comparisons will be 
made for Product A vs. B, A vs. C and B vs. C. The comparison between Product A and Product 
C will be used as a comparison for internal validity. The LSM difference, p-value and 95% CI of 
the difference will be provided. 
The same model will be used for Emax_urge(uncontrolled) and Emax_plst(uncontrolled), and all Emax of other 
questions in the Tobacco/Nicotine Withdrawal Questionnaire and Direct Effects of Product 
Questionnaire for the controlled and uncontrolled product uses in Part B. Responses to Use the 
Product Again VAS will be summarized by study product using descriptive statistics (n, mean, 
SD, median, Q1, Q3, min, max). A summary table of frequencies may also be provided.  
Descriptive statistics (n, mean, SD, median, Q1, Q3, min, max) will be provided on duration of 
time a product is used (time spent per cigarette and duration of gum in mouth), number of 
inhalations (puffs), and duration of inhalation (per puff) per cigarette for own-brand and VLN 
cigarettes. 
12.4.3.3. Adjustment for Covariates 
Baseline (pre-use) score will be included as a covariate for all pharmacodynamics measures for 
which a pre-use score is collected. 
12.4.3.4. Handling of Dropouts or Missing Data 
Missing pharmacodynamic data, including reasons for the missing data, will be listed by subject 
and examined on a case-by-case basis to determine if these affect subject allocation. No 
imputation of missing pharmacodynamic data will be performed. 
12.4.3.5. Interim Analyses and Data Monitoring 
No interim analyses will be performed. 
12.4.3.6. Multiple Comparison/Multiplicity 
Multiple comparison adjustments will not be made. 
12.4.3.7. Tabulation of Individual Response Data 
Individual subject pharmacodynamic data will be listed by measure and timepoint. A by-subject 
listing of derived pharmacodynamic endpoints (e.g., Emax, etc.) will also be provided. 
12.4.4. 
Analysis of Pharmacokinetics 
Refer to the SAP for details on analysis of PK. 
Descriptive statistics of plasma nicotine concentrations will be tabulated by time point for each 
study product and product use condition. Derived PK parameters (both unadjusted and baseline 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 53 of 65 
 
adjusted) will be summarized using descriptive statistics. Summaries will be provided for plasma 
nicotine-adjusted concentrations. 
A linear mixed model for analysis of variance (Proc Mixed) will be performed on the baseline-
adjusted log transformed nicotine PK parameters in Part B. The model will include sequence, 
study product, and period as fixed effects and subject nested-within sequence as a random effect. 
Sequence will be tested using subject nested-within sequence as the error term. From each 
model, the geometric LSM and 95% confidence intervals will be calculated for each study 
product. Separate analyses will be performed on the parameters calculated for the Controlled and 
Uncontrolled Use sessions. Geometric mean ratios for each pair comparison, 95% confidence 
interval and p value will be provided.  
The same linear mixed effect model as used for the analysis of Cmax(controlled) will be used for 
Cmax(uncontrolled) of second product use in Part B, and for AUC following all product uses. The 
Hodges-Lehmann’s method will be used to estimate the median differences and the 95% 
confidence interval of Tmax and T½ between the products. 
12.4.5. 
Analysis of Safety Assessments 
A by-subject AE data listing, including verbatim term, preferred term, study product, severity, 
and relationship to study product, will be provided. Study product use–emergent AEs will be 
summarized with tables. Frequencies of subjects with AEs, SAEs and incidence of those events, 
regardless of relationship to study product, will be summarized by study product and sorted by 
system organ class. Frequencies of AEs will be summarized by severity and relationship to study 
product. Clinical laboratory evaluations (serum chemistry, hematology, and urinalysis), vital 
signs measurements (blood pressure, pulse, respiration, and temperature) and ECG 
measurements (VR, PR, QRS, QT, and QTcF intervals) will be summarized descriptively. All 
concomitant medications recorded during the study will be listed by subject. Physical 
examinations will be listed by subject and time point of collection. 
Details can be found in the SAP. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 54 of 65 
 
13. 
STUDY ADMINISTRATION AND INVESTIGATOR 
RESPONSIBILITIES 
Additional details may be outlined in the Clinical Study Agreement (CSA) between the Sponsor 
and the investigational site.  
13.1. 
Regulatory and Ethical Considerations 
13.1.1. 
Ethical Conduct of the Study 
An investigator will conduct the study in accordance with GCP and all applicable regulations, 
including, where applicable, the Declaration of Helsinki. The study will also be carried out in 
keeping with applicable national and local laws and regulations. This may include an inspection 
by the Sponsor’s representatives and/or regulatory authority’s representatives at any time. 
13.1.2. 
Regulatory Authority and Ethics Approval 
The investigational site’s IRB must meet all relevant regulatory requirements. The study protocol 
and ICF will be reviewed by the IRB prior to enrolling subjects into the study; written approval 
from the committee must be received by the Sponsor before study product will be released to an 
investigator.  An investigator is responsible for submitting all protocol or ICF changes and SAE 
reports to the IRB according to local procedures.  
In accordance with applicable local regulatory requirements, an investigator may be obligated to 
provide periodic safety updates on the conduct of the study at his/her research site and 
notification of study closure to the IRB. Such periodic safety updates and notifications are the 
responsibility of an investigator and not of the Sponsor. The Sponsor will be provided with 
copies of all notifications sent to the IRB. 
All relevant correspondence from the IRB will be forwarded by the respective study site to the 
Sponsor in a timely fashion. 
13.1.3. 
Subject Informed Consent 
An investigator (or authorized designee) will ensure that the subject (or the subject’s legal 
representative) is given full and adequate oral and written information about the nature, purpose, 
potential and possible risks and benefits of the study. Each prospective subject will receive an 
IRB-approved ICF that summarizes the pertinent study information and will be given ample time 
to read the form and ask questions about the study. All information is to be provided in a 
language understandable to the subject and must not include any language that waives the 
subject’s legal rights. Prospective subjects must also be informed of their right to withdraw 
consent without prejudice at any time during the study. If the subject chooses to participate, 
he/she must sign and date the ICF before any study-related procedures are performed. The time 
of signing will be recorded on the ICF 
Significant changes to the protocol or product safety information may require a revision of the 
ICF, which must be reviewed and signed by all applicable study subjects. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 55 of 65 
 
The time that informed consent is obtained must be documented. An investigator must maintain 
the original, signed ICF in the subject’s source documents. A copy of the signed ICF must be 
given to the study subject. 
13.2. 
Privacy and Confidentiality 
An investigator is responsible for complying with applicable privacy regulations, per his or her 
jurisdiction. Only information identified in this protocol will be collected. The information 
collected will only be used for the purposes identified in this protocol. 
To ensure anonymity and to limit disclosure, subjects will be assigned a unique identifier at their 
first assessment. This identifier will be cross-referenced in the subject’s chart. The identifier will 
not contain any potentially identifiable information. An identifier log will be maintained, linking 
each subject’s name to the corresponding identifier. This log will be stored at the research site in 
a secure location. 
The knowledge gained through this study is the property of the Sponsor. The Sponsor, 
representatives and affiliated companies of the Sponsor, the IRB, and regulatory agencies (such 
as the United States FDA) may inspect medical records related to the study to check the validity 
and accuracy of the data gathered in this study. Subject medical records (with subject’s initials 
and/or date of birth) may be copied. Confidentiality of subject records will be maintained except 
where release of information is required by law.  
The results of this study will be reported in such a manner that subjects will not be identifiable in 
any way. Published reports or presentations will refer to grouped data or coded individual data 
and not to any identifiable individuals. Study reports sent to the Sponsor or drug regulatory 
agencies will not include subject names. 
By signing the ICF, the subject consents to the collection, access, use, and disclosure of his or her 
information as described in the ICF document. If a subject withdraws consent, some of the 
subject’s information may still be collected, used, and disclosed by those involved in this study, 
per applicable laws.  
By signing this protocol, an investigator affirms that he/she will maintain in confidence 
information furnished to him or her by the Sponsor and will divulge such information to his or 
her respective IRB or Independent Ethics Committee under an appropriate understanding of 
confidentiality with such board. All data will be considered the sole property of the Sponsor. 
Please refer to the CSA for details. 
13.3. 
Study and Site Closure 
Upon completion of the study, all study data will be provided to the Sponsor following review of 
site study records for completeness, and data clarifications and resolutions. Accounting, 
reconciliation, and final disposition of used and unused study products will be performed, as 
applicable. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 56 of 65 
 
In addition, the Sponsor reserves the right to temporarily suspend or prematurely discontinue this 
study at any time and for any reason. If such action is taken, the Sponsor will discuss this with an 
investigator (including the reasons for taking such action) at that time. The Sponsor will 
promptly inform any other investigators and/or institutions conducting the study, if the study is 
suspended or terminated for safety reasons and will inform the regulatory authorities of the 
suspension or termination of the study and the reason(s) for the action. If required by applicable 
regulations, an investigator will inform the IRB promptly and provide the study subjects with the 
reason for the suspension or termination. If the study is prematurely discontinued, all study data 
will be returned to the Sponsor.  
13.4. 
Regulatory Documents and Records Retention 
An investigator is responsible for creating and/or maintaining all study documentation required 
by 21 CFR 50, 54, 56 and 312, ICH E6 section 8, as well as any other documentation defined in 
the protocol or CSA. An investigator must provide key documents to the Sponsor prior to the 
start of the study.  A complete list of required regulatory documents will be supplied by the 
Sponsor or its representative. 
Federal and local regulations require that an investigator retain a copy of all regulatory 
documents and records that support the data for this study for whichever of the following is the 
longest period of time: 
▪ A period of 2 years following the final date of approval by the FDA or other regulatory 
agency of the study product for the purposes that were the subject of the investigation; or 
▪ A period of 5 years following the date on which the results of the investigation were 
submitted to the FDA or other regulatory agency in support of, or as part of, an 
application for a research or marketing permit for the study product for the purposes that 
were the subject of the investigation. 
The Sponsor will notify investigators once one of the above two timeframes has been satisfied. 
If the investigation does not result in the submission of the data in support of, or as part of, an 
application for a research or marketing permit, records must be retained for a period of 2 years 
following notification by the Sponsor that the entire clinical investigation (not merely an 
investigator’s portion) is completed, terminated, or discontinued.  
If an investigator retires, relocates, or for other reasons withdraws from the responsibility of 
keeping the study records, custody must be transferred to a person who will accept the 
responsibility. The Sponsor must be notified in writing of the name and address of the new 
custodian. Study records should not be destroyed without consultation with the Sponsor. 
13.5. 
Delegation of Responsibilities and Adequate Resources 
An investigator should have adequate time to conduct the study properly and should have an 
adequate number of qualified staff to assist with the conduct of the study.  

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 57 of 65 
 
The term “investigator” used throughout this protocol refers to the principal investigator and/or 
qualified sub-investigators. However, the investigator may delegate responsibilities to other 
investigational site personnel. An investigator shall delegate tasks only to individuals qualified 
by education, training and experience to perform the delegated tasks. An investigator shall have 
direct oversight of all delegated activities and shall document delegation of responsibilities. An 
investigator is responsible for ensuring all delegated staff have been properly trained on the 
protocol and their assigned study responsibilities. A delegation log identifying all delegated 
duties and the individual to whom they have been delegated will be maintained at the 
investigational site.  
13.6. 
Protocol Amendments 
Approval of a protocol amendment by an investigator’s IRB must be obtained before 
implementation of the protocol amendment, unless a change is necessary to eliminate an 
apparent immediate hazard to the subject or when the change involves logistical or 
administrative aspects of the study. The protocol amendment must be signed and dated by both 
the Sponsor and an investigator. The Sponsor or designee will submit protocol amendments to 
the appropriate regulatory authorities, if required. 
13.7. 
Financial Disclosure 
Clinical investigators are required to provide financial disclosure information for the submission 
of certification or disclosure statements required under 21 CFR § 54. As defined in 21 CFR § 
54.2, a clinical investigator is a listed or identified investigator or sub-investigator who is directly 
involved in the treatment or evaluation of research subjects. The term also includes the spouse 
and each dependent child of an investigator. In addition, investigators must promptly update 
financial disclosure information if any relevant changes occur during the course of the 
investigation and for 1 year following completion of the study. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 58 of 65 
 
14. 
SPONSOR APPROVAL PAGE 
EVALUATION OF THE ABUSE LIABILITY OF VLN CIGARETTES IN 
ADULT SMOKERS 
 
Version: Amendment 1.0, 2.0 
Date: 11APR2018 
22nd Century Group, Inc. 
 
 
 
 
James Swauger  
SVP Science and Regulatory Affairs 
 
Date 
 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 59 of 65 
 
15. 
INVESTIGATOR PROTOCOL AGREEMENT PAGE 
EVALUATION OF THE ABUSE LIABILITY OF VLN CIGARETTES IN 
ADULT SMOKERS 
 
Version: Amendment 1.0, 2.0 
Date: 11APR2018 
I agree to conduct the study in accordance with the protocol and with all applicable government 
regulations and International Conference on Harmonisation/Good Clinical Practice guidances. 
 
Principal Investigator’s 
Name 
 
(please print or type) 
 
 
 
 
Principal Investigator’s Signature 
 
Date 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 60 of 65 
 
16. 
REFERENCES 
Benowitz NL, Hall SM, Stewart S, Wilson M, Dempsey D, Jacob P 3rd. Nicotine and carcinogen 
exposure with smoking of progressively reduced nicotine content cigarette. Cancer Epidemiol 
Biomarkers Prev. 2007 Nov;16(11):2479-85. 
Benowitz NL, Dains KM, Dempsey D, Herrera B, Yu L, Jacob P 3rd. Urine nicotine metabolite 
concentrations in relation to plasma cotinine during low-level nicotine exposure. Nicotine Tob 
Res. 2009 Aug;11(8):954-60. 
Benowitz NL, Dains KM, Hall SM, Stewart S, Wilson M, Dempsey D, Jacob P 3rd. Smoking 
behavior and exposure to tobacco toxicants during 6 months of smoking progressively reduced 
nicotine content cigarettes. Cancer Epidemiol Biomarkers Prev. 2012 May;21(5):761-9. 
Donny EC, Houtsmuller E, Stitzer ML. Smoking in the absence of nicotine: behavioral, 
subjective and physiological effects over 11 days. Addiction. 2007 Feb;102(2):324-34. 
Donny EC, Denlinger RL, Tidey JW, Koopmeiners JS, Benowitz NL, Vandrey RG, al'Absi M, 
Carmella SG, Cinciripini PM, Dermody SS, Drobes DJ, Hecht SS, Jensen J, Lane T, Le CT, 
McClernon FJ, Montoya ID, Murphy SE, Robinson JD, Stitzer ML, Strasser AA, Tindle H, 
Hatsukami DK. Randomized Trial of Reduced-Nicotine Standards for Cigarettes. N Engl J Med. 
2015 Oct;373(14):1340-9 
Fagerström K, Eissenberg T. Dependence on tobacco and nicotine products: a case for product-
specific assessment. Nicotine Tob Res. 2012;14(11):1382-90.   
Griffiths RR, Bigelow GE, Ator NA (2003). Principles of initial experimental drug abuse liability 
assessment in humans. Drug and Alcohol Dependence 70: S41-S54. 
Hanson K, O’Connor R, Hatsukami D (2009). Measures for assessing subjective effects of 
potential reduced-exposure products. Cancer Epidemiology, Biomarkers and Prevention. 18: 
3209-3224.   
Hatsukami DK, Hertsgaard LA, Vogel RI, Jensen JA, Murphy SE, Hecht SS, Carmella SG, 
al'Absi M, Joseph AM, Allen SS. Reduced nicotine content cigarettes and nicotine patch. Cancer 
Epidemiol Biomarkers Prev. 2013 Jun;22(6):1015-24. 
Hughes JR, Hatsukami D (1986). Signs and symptoms of tobacco withdrawal. Arch Gen 
Psychiatry. 43(3): 289-94. 
McPherson S, Howell D, Lewis J, Barbosa-Leiker C, Bertotti Metoyer P, Roll J. Self-reported 
smoking effects and comparative value between cigarettes and high dose e-cigarettes in nicotine-
dependent cigarette smokers. Behav Pharmacol. 2016; 27(2-3 Spec Issue):301-7. 
Rupprecht LE, Koopmeiners JS, Dermody SS, Oliver JA, al'Absi M, Benowitz NL, Denlinger-
Apte R, Drobes DJ, Hatsukami D, McClernon FJ, Pacek LR, Smith TT, Sved AF, Tidey J, 
Vandrey R, Donny EC. Reducing nicotine exposure results in weight gain in smokers 
randomised to very low nicotine content cigarettes. Tob Control. 2017 Mar;26(e1):e43-e48. 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 61 of 65 
 
Vansickel AR, Cobb CO, Weaver MF, Eissenberg TE. A clinical laboratory model for evaluating 
the acute effects of electronic "cigarettes": nicotine delivery profile and cardiovascular and 
subjective effects. Cancer Epidemiol Biomarkers Prev. 2010; 19(8):1945-53. 
Stiles MF, Campbell LR, Graff DW, Jones BA, Fant RV, Henningfield JE. Pharmacodynamic and 
pharmacokinetic assessment of electronic cigarettes, combustible cigarettes, and nicotine gum: 
implications for abuse liability. Psychopharmacology (Berl). 2017; 234(17):2643-2655. 
US Food and Drug Administration. Guidance for Industry: Modified Risk Tobacco Product 
Applications; March 2012. Available from 
https://www.fda.gov/downloads/TobaccoProducts/Labeling/RulesRegulationsGuidance/UCM297
751.pdf Accessed 22 January, 2018. 
  

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 62 of 65 
 
17. 
APPENDICES 
17.1. 
Summary of Blood Volume Requirements 
 
Pharmacokinetic 
Sampling 
Safety 
Total 
 
Clinical 
Chemistry 
Hematology 
Serology 
~ volume per 
sample (mL) 
4 mL 
5 mL 
4 mL 
8.5 mL 
 
 
Blood Volume (mL) [Number of Samples] 
Screening 
-- 
5 [1] 
4 [1] 
8.5 [1] 
17.5 
Part A 
-- 
-- 
-- 
-- 
-- 
Part B 
360 [90] 
-- 
-- 
-- 
360 
End of study 
 
5 [1] 
4 [1] 
 
9 
Total 
360 
10 
8 
8.5 
386.5 
Blood volumes shown in the table are approximate and do not include approximately 90 mL catheter waste. 
Additional blood samples may be taken if needed to follow-up on individual subject safety. 
 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 63 of 65 
 
17.2. 
Pharmacodynamic Measures/Scales 
17.2.1. 
Tobacco/Nicotine Withdrawal Questionnaire 
 
VAS Tobacco/Nicotine Withdrawal Scale c 
 
Note:  Each question will be paired with a VAS.  The VAS anchored with “Not at All” on the 
left and “Extremely” on the right.  Subjects place a vertical line at a place along the VAS based 
on how he feels in the moment. 
 
Not at All                                                                                                   Extremely 
 
 
 
 
 
 
 
100 points 
 
These phrases may or may not describe how you feel right now. Please respond to each word or 
phrase with how you feel RIGHT NOW by drawing a vertical mark anywhere along the 
horizontal line. 
 
1. Urges to Smoke  
2. Anxious 
3. Difficulty Concentrating 
4. Impatient 
5. Craving a Cigarette  
 
 
 
c Items on this scale have been adapted from Hughes & Hatsukami 1986 

Clinical Trial Protocol 
22nd Century Group, Inc. 
CEG-P9-153 
CONFIDENTIAL 
 
Version: Amendment 1.0, 2.0, 11APR2018 
Page 65 of 65