Conditions: Nicotine Dependence
Allocation: RANDOMIZED | Intervention model: CROSSOVER
Enrollment: 20
Healthy volunteers: yes

Brief summary:
This study seeks to elucidate the impact of e-cigarette flavor on subjective effects and nicotine exposure from e-cigarettes containing different forms of nicotine.

Detailed description:

Arms:
arm 1: In this arm, participants will receive two experimental e-cigarette flavors arm 2: In this arm, participants will receive two forms of nicotine in an e-cigarette

Interventions: intervention 1: Nicotine form intervention 2: E-cigarette experimental flavor
Intervention descriptions: intervention 1: participants will receive 36mg/ml nicotine salt and freebase nicotine intervention 2: Participants will receive menthol and tobacco flavored e-cigarettes

Protocol document:
Prot_SAP_000.pdf: 
ClinicalTrials.gov ID: NCT04262817 
Title: The Interaction of Flavor with Nicotine Form in Adult Smokers 
Date: 8/3/2021 
Document: Protocol with SAP 


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HRP-503B – BIOMEDICAL RESEARCH PROTOCOL 
(2017-1)
Protocol Title: The interaction of flavor with nicotine form in adult smokers 
Principal Investigator: Asti Jackson, Ph.D.
Version Date: April 4, 2019
(If applicable) Clinicaltrials.gov Registration #: Click or tap here to enter text.
INSTRUCTIONS
This template is intended to help investigators prepare a protocol that includes all of the necessary information 
needed by the IRB to determine whether a study meets approval criteria. Read the following instructions 
before proceeding:
1.
Use this protocol template for a PI initiated study that includes direct interactions with research 
subjects. Additional templates for other types of research protocols are available in the system Library.
2.
If a section or question does not apply to your research study, type “Not Applicable” underneath.
3.
Once completed, upload your protocol in the “Basic Information” screen in IRES IRB system. 
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SECTION I: RESEARCH PLAN
1.
Statement of Purpose: State the scientific aim(s) of the study, or the hypotheses to be tested. 
TCORS menthol Pilot Study 
This proposal seeks to elucidate the impact of flavor (tobacco vs menthol) on reward/appeal, 
harshness/irritation and nicotine delivery from e-cigarettes containing nicotine (36mg/ml nicotine salt vs 
36mg/ml free base nicotine e-liquids) in adult menthol smokers. 
Primary Aim: Examine the influence of menthol flavor (when compared to a control tobacco flavor) 
on the effects of nicotine (freebase vs salt) on harshness/irritation and reward among menthol 
smokers. Participants will rate irritation/harshness using the General Labeled Magnitude Scale 
(gLMS)1, reward (liking and wanting of drug effects) using the Revised Drug Effects Questionnaire 
(DEQ) 2 and liking/disliking of e-cigarette flavor using the Labeled Hedonic Scale (LHS)3. We 
hypothesize that menthol’s effects on reduction of irritation will be greater following exposure to 
freebase nicotine e-liquids, when compared with nicotine salt. We also hypothesize that menthol 
when combined with nicotine salts will produce greater reward than when combined with freebase 
nicotine. 
Secondary Aim: Examine the influence of menthol flavor on the effects of nicotine (freebase vs salt) 
stimulation, craving reduction, and alleviation of nicotine withdrawal. Participants will rate nicotine 
withdrawal and stimulation using the Revised DEQ and cigarette craving using the gLMS.  
Exploratory Aim: Examine nicotine delivery following exposure to nicotine salt vs freebase nicotine 
exposure in combination with flavors (tobacco or menthol) by measuring saliva nicotine levels 5 min 
prior and 5, 15, 30, 45, and 55 minutes after nicotine and flavor exposure via e-cigarettes
K01 metabolism study
Eighty-Five African Americans (43 F,42 M) who smoke and have experience with e-cigarettes will 
participate in a double-blind, randomized, cross-over study across two experimental sessions. 
Following overnight abstinence from combustible tobacco products (CO≤10 ppm), participants will be 
randomly assigned to receive an e-cigarette with menthol flavor or control tobacco flavor (both in a 
concentration of 5% nicotine) on two separate days. Each session will consist of 1 puffing bout (10 
puffs, 3 sec each puff, 30 sec puff interval) followed by 2 hours of abstinence, then 60 minutes of ad 
libitum e-cigarette use. The specific aims are: 
Aim 1: Investigate the relationship of menthol flavor (vs tobacco flavor) and nicotine metabolite 
ratio (NMR) on nicotine pharmacokinetics and subjective effects during directed e-cigarette 
administration in African Americans who smoke. We hypothesize that during the menthol exposure 
session participants will have higher plasma nicotine levels compared to the tobacco flavor exposure 
session. We hypothesize that NMR is negatively associated with nicotine plasma levels during the 
tobacco flavor exposure sessions. Lastly, we hypothesize that participants will have a larger reduction 
of cigarette craving in the menthol compared to tobacco session. Primary outcomes: plasma nicotine 
boost, nicotine area under the curve. Secondary outcome: cigarette craving. Exploratory outcomes: 
other subjective effects such as liking of e-cig taste. Gender differences will be explored for all 
outcomes.
Aim 2: Elucidate the relationship between menthol flavor (vs tobacco flavor) and NMR on 
nicotine pharmacokinetics and subjective effects during e-cigarette ad libitum use in African 
Americans who smoke. We hypothesize that participants will take more puffs during the menthol 
session compared to the tobacco session. Additionally, we hypothesize that participants will titrate their 
nicotine intake and have similar nicotine plasma levels for both flavor exposure sessions. Furthermore, 
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we hypothesize that NMR will be positively associated with nicotine delivery (amount of e-liquid used x 
nicotine e-liquid concentration) for both flavor sessions. Lastly, we hypothesize that participants will 
have a larger reduction of cigarette craving in the menthol compared to tobacco session. Primary 
outcomes: plasma nicotine boost, nicotine area under the curve. Secondary outcomes: measure of 
nicotine delivered to participant and cigarette craving. Exploratory outcomes: number of puffs and 
subjective effects. Gender differences will be explored for all outcomes.
2.
Probable Duration of Project: State the expected duration of the project, including all follow-up and data 
analysis activities.  
2 years
TCORS Menthol Pilot Study
K01 Metabolism Study
I anticipate completing both phases of the study by the end of this 5-year K01 award (funded Sept 
2020). I anticipate completing 21 participants per year. 
3.
Background: Describe the background information that led to the plan for this project. Provide references to 
support the expectation of obtaining useful scientific data.
TCORS Menthol Pilot Study 
Combustible tobacco product use contributes to 90% of lung cancer cases and 500,000 other 
related deaths per year in the United States4. In particular, menthol cigarette smokers have greater 
nicotine dependence 5 and have lower cessation rates than non-menthol cigarette smokers 6. 
Electronic(e-) cigarette devices, which have been shown to be acutely less harmful than cigarettes7, 
may serve as harm reduction tools 8. Smokers transitioning to e-cigarettes completely may reduce 
the health burdens associated with tobacco use disorder4.  Given that smoking is reinforced by 
nicotine dependence9, it is critical to understand which form of nicotine in e-cigarettes is important 
to established menthol smokers and will aid in their transition to e-cigarettes.
Pod e-cigarette devices such as the JUUL have surged in popularity in the past year 10 and 
introduced nicotine salts into the e-cigarette/e-liquid market. Prior to this entrance, freebase nicotine 
was the only form of nicotine found in e-liquids. Compared to nicotine salts, freebase nicotine is 
thought to cause greater irritation/harshness at high doses 11,12. In addition, e-cigarette companies 
have suggested that nicotine salts deliver more nicotine to the user than freebase nicotine 13,14. 
However, we lack empirical evidence on both these issues. Further, e-cigarette/e-liquid companies 
market nicotine salts in e-liquids as an avenue for established smokers to transition to e-cigarettes. 
However, the rewarding effects of nicotine salts vs freebase nicotine have not been tested in 
smokers. 
     Flavors are known to play a significant role in increasing the appeal of tobacco and nicotine 
products15–17. Menthol is one such flavor which is present in both e-cigarettes that contain freebase 
nicotine and those that contain nicotine salts.  Menthol is thought to reduce the harshness and 
Study 
Quarter 1
Quarter 2
Quarter  3
Quarter 4
2 experiment 
sessions
7 completers
7 completers
8 completers
Analyze results.
8 completers  
Analyze 
results.
Present at 
conference.
Publish
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irritation of nicotine 18–20. Thus, menthol’s effect on harshness may differ depending on the form of 
nicotine present in e-liquids because, as discussed earlier, nicotine freebase and nicotine salt may 
have differential irritant properties. Furthermore, given that previous studies have shown that 
irritation/harshness of e-liquids negatively correlates with reward/appeal21, menthol may also have 
divergent effects on reward of freebase nicotine and nicotine salt e-liquids. Therefore, this proposal 
seeks to investigate the effect of menthol flavor on nicotine salt vs freebase nicotine e-liquids on 
irritation/harshness, reward and nicotine delivery in adult smokers. Since the appeal of mentholated 
nicotine products may be particularly relevant for menthol smokers, who are also known to have 
more difficulty quitting smoking6,22, we will conduct this examination in menthol smokers
K01 Metabolism Study
The overall goal of this proposal is to understand the relationship between menthol e-liquid flavor (vs 
tobacco e-liquid flavor) and nicotine metabolite ratio (NMR) on plasma pharmacokinetic parameters of 
nicotine and subjective effects in African Americans who smoke. This proposal will utilize two lab-based 
e-cigarette exposure paradigms: (A) directed e-cigarette administration and (B) e-cigarette ad libitum 
use. The following aims will be investigated: (1): Investigate the relationship of menthol flavor(vs 
tobacco flavor) and NMR on nicotine pharmacokinetics and subjective effects during directed e-
cigarette administration and (2): Elucidate the relationship between menthol flavor and NMR on nicotine 
pharmacokinetics and subjective effects during e-cigarette ad libitum use.
   African Americans are disproportionately burdened with tobacco-related health diseases 
compared to other racial groups in the US 23,24. African Americans who smoke are more likely to 
develop lung cancer compared to smokers of other ethnic/racial groups25,26. These health disparities 
exist even though African Americans are more likely to be light smokers (smoke less than 10 cigarettes 
per day)27,28 and less likely to be daily smokers 29,30. African Americans also take in more nicotine when 
smoking compared to White people who smoke 31. The more intense smoking by African Americans 
may be related to the observation that 80% of African Americans who smoke are menthol smokers5,32. 
Menthol has cooling and analgesic properties via the transient receptor potential channels 33,34, which 
may reduce irritation from tobacco smoke and nicotine 18,35 Menthol cigarettes pose a greater public 
health risk than non-menthol cigarettes because those who use menthol cigarettes have higher 
nicotine dependence 5,36–38 and decreased success in quitting smoking37,39. 
  It is important to understand the role of menthol flavor in nicotine dependence in African 
Americans. Nicotine, a compound found in tobacco products, activates nicotinic acetylcholine 
receptors in the mesolimbic pathway to induce rewarding and reinforcing properties 40. Constituents of 
tobacco products that have an influence on nicotine levels may influence dependence and addiction of 
tobacco products. Preclinical studies suggest that menthol inhibits nicotine metabolism41 by inhibiting 
the enzyme primarily responsible for the metabolism of nicotine through oxidation, CYP2A642. 
Additionally, studies have also shown that African Americans who smoke have a slower nicotine 
metabolism than White people who smoke 31,43,44. African Americans who smoke have been shown to 
have slower oxidative metabolism of nicotine and slower N-glucuronidation than White people who 
smoke45. However, since 80% of African Americans who smoke, smoke menthol cigarettes, it is unclear 
if the effect on nicotine metabolism in African Americans is the result of menthol exposure. 
Furthermore, there are few studies that have investigated the differential impact of menthol on nicotine 
metabolism within the African American population. Additionally, It has been shown that females who 
smoke are more likely to smoke menthol cigarettes compared to men, however gender differences 
within Black people who smoke is understudied46. 
     Electronic (e)-cigarettes are an ideal system for examining the inhaled effects of menthol on 
nicotine metabolism in African Americans who smoke. E-cigarettes are battery operated devices 
that heat e-liquids containing nicotine, flavors and other constituents such as propylene glycol and 
glycerin 47. E-cigarettes have a similar route of nicotine administration to cigarettes and there are similar 
habitual smoking-related behaviors (hand to mouth movements)8. A previous clinical intervention study 
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conducted suggested that  menthol in cigarettes reduces nicotine metabolism in White and African 
Americans who smoke 48. Further supporting menthol’s potential role on nicotine metabolism, a survey 
study that collected NMR in White, Filipinos and Native Hawaiians showed that those who smoked 
menthol cigarettes had a slower metabolism than those who smoked non-menthol cigarettes 
49,50However, given that cigarettes contain hundreds of chemicals, e-cigarettes are an ideal tobacco 
product to test the impact of menthol on nicotine metabolism. Additionally, there have been limited 
examinations of the influence of e-cigarettes in African Americans who smoke. To our knowledge, there 
are only two outpatient studies that experimentally examined toxicant exposure and subjective effects 
of e-cigarettes among African Americans51,52. There are no lab-based experimental e-cigarette 
administration studies that investigate the impact of menthol on the pharmacokinetic effects of nicotine 
via e-cigarettes within an in African American sample. African Americans are underrepresented in 
tobacco research even though they carry a disproportionate burden of tobacco related diseases. 
Intentional efforts are needed to correct this. Therefore, this proposal will recruitment African Americans 
who smoke which will aid in reducing tobacco-related health burdens in African Americans and benefit 
overall public health.  
   Tobacco Regulatory Impact of Proposed Research: This proposal will provide additional scientific 
data to inform regulation of tobacco products by addressing the FDA’s Behavior and Addiction scientific 
interest areas and focus on Africans Americans which represent a vulnerable population. Behavior – 
this proposal seeks to understand the knowledge, attitudes, and behaviors related to use of menthol 
tobacco products in African Americans. Addiction- this application will understand the impact of 
menthol on nicotine metabolism and dependence in individuals who smoke. Vulnerable population-
this application could aid in reducing tobacco-related health burdens in African Americans which would 
benefit overall public health. 
The scientific premise for this proposal is to address critical gaps in menthol flavor research by 
evaluating the impact of menthol and NMR on nicotine pharmacokinetics and subjective in e-cigarettes 
among African Americans who smoke.
4.
Research Plan: Summarize the study design and research procedures using non-technical language that can 
be readily understood by someone outside the discipline. Be sure to distinguish between standard of care vs. 
research procedures when applicable, and include any flowcharts of visits specifying their individual times and 
lengths. Describe the setting in which the research will take place.
TCORS menthol pilot study
Uses:
Suorin iShare e-cigarette
DuraSmoke® brand Tobacco Virginia e-liquid, 36 mg/mL nicotine (salt equivalent)
AmericaneLiquid® brand Tobacco-Menthol e-liquid, 36 mg/mL nicotine
DuraSmoke® brand Tobacco Menthol e-liquid, 36 mg/mL nicotine (salt equivalent)
AmericaneLiquid® brand Tobacco-Virginia e-liquid, 36 mg/mL nicotine
This is a double-blind study. Subjects will be blinded to the form of nicotine (salt vs freebase) and 
the flavor (menthol vs tobacco flavor).
Experimental design:  This proposal seeks to elucidate the differences in reward/appeal, 
harshness/irritation, nicotine delivery, preference and impact of menthol flavor (compared to control 
tobacco flavor) between nicotine salt vs free base nicotine e-liquids. Thirty adult menthol smokers 
(15 male; 15 female) will participate in a double-blind, randomized, cross-over study across three 
experimental sessions. For the first two sessions, each participant will be randomly assigned to 
receive nicotine salt or freebase nicotine (both in a concentration of 36mg/ml) on two separate days 
(see Table 1). Freebase nicotine e-liquid at concentration of 36mg/ml has been used previously  in 
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smokers with no reported adverse effects 53,54 and this concentration  is  within range of nicotine 
concentrations used in nicotine salt e-liquids/e-cigarette pod devices 55,56.  Following overnight 
abstinence from combustible tobacco products (CO≤10 ppm), participants will be exposed to the 
assigned form of nicotine in combination with two flavor conditions (tobacco and menthol) in a 
counterbalanced randomized order. Each exposure will consist of 2 2-sec puffs  and will be 
separated by a 60-minute washout period (see Table 2). 
iSaliva nicotine/ cotinine is an exploratory outcome and nicotine/cotinine levels will be assessed using 
saliva samples obtained 10 times per session (5 min prior to and 5, 15, 30, 45, and 55 minutes after the 
onset of puff1, and 5, 15, 30, and 45 minutes after the onset of puff2). Assessing the nicotine/cotinine 
levels will determine if there are pharmacokinetic differences between nicotine salts vs freebase 
nicotine. After completing the first two e-cigarette exposure sessions, the same thirty adult menthol 
smokers (15 female, 15 male) will undergo overnight abstinence from combustible tobacco and nicotine 
products and participant in a 60-minute choice e-cigarette self-administration session. 
During the third session, each participant will then be exposed to the same e-liquids they were exposed 
to during the two experimental sessions.  During the third session participants can freely self-administer 
any of the four e-liquids in an e-cigarette pod device (see Table 3). Participants will be left alone in the 
room to use all four of the e-cigarettes in any order or frequency they choose (Table 1). The third 
session will be video recorded. This session will be double blinded but to ensure participants distinguish 
each e-cigarette from each other, the e-cigarettes will be labeled with letters A, B, C, D randomly by a 
research assistant who is not conducting the study or coding the videos. This labeling will also be 
helpful for the video coders so they can distinguish e-cigarettes. E-liquids will be measured before and 
after the session. Two research assistants will independently code the video-tapes for puffing 
behaviors. Heart rate and blood pressure will be monitored throughout the session for safety, and 
participants will be told that they can stop anytime if they feel uncomfortable. Per the current practice of 
Dr. Krishnan-Sarin’s research group, participants will be trained on how to puff the e-cigarettes, prior to 
the self-administration session. Training will be conducted using e-cigarettes that contain the base 
liquid of 50% propylene glycol(PG)/50% vegetable glycerin(VG).
The third session will be videotaped to ensure experimenter reliability, and to review individual 
participant’s vaping. The commercially available Suorin iShare ™ and commercially available e-liquids 
will be used for our studies. The Suorin iShare ™ is a refillable pod system e-cigarette device 
composed of a battery without voltage control and a refillable pod that contains the e-liquid, mouthpiece 
and coil. It is among one of the pod e-cigarette devices that are used widely57,58. Participants will not be 
allowed to keep the device. One month after the third session, participants will receive a follow up 
phone call to assess any health symptoms via a health assessment list, fatigue and shortness of 
breath.
For the safety of participants, we will add plexiglass dividers in the rooms where experimental sessions 
take place to limit contact between participants and researchers. To limit in-person interactions during 
experimental sessions, we will give instructions and communicate to participants from another location 
remotely using a 2-way audio system. Hand sanitizer will be available, and participants will be asked to 
wear gloves for the duration of the lab session. All devices and areas will be sanitized before and after 
each participant. These changes have been added to the protocol and consent.
Table 1: Four e-cigarettes conditions that will be used throughout the study.
Nicotine Concentration
Nicotine Condition
Flavor
36mg/ml
salt
tobacco
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Table 2: First Two  Experimental Sessions Breakdown: Each session participants will be exposed to two separate 
conditions (see table 3). Below is an example of one session.
Table 3: 
Third experimental session design breakdown. 60-minute e-cigarette self-administration
K01 metabolism study
Uses Juul Device
Menthol eLiquid 59mg/ml (5%) nicotine
Virginia Tobacco eLiquid 59mg/ml (5%) nicotine
36mg/ml
salt
menthol
36mg/ml
freebase
tobacco
36mg/ml
freebase
menthol

Assessments

Saliva 
collection (1 
sample)

CO
1st 
Directed 
Puff
( e-cig 
condition 
from 
table 3)
Nicotine 
washout period

Assessments

Saliva 
collection (5 
samples)
2nd 
Directed 
puff 
(a 
different 
e-cig 
condition 
from 
table 3
Nicotine 
washout period

Assessments

Saliva 
collection (4 
samples)
5 min 
5 min
60 min

Weigh e-liquids

CO
Self-administration 
(ad-lib)
[all four of the e-
cigarette conditions 
in Table 3 that 
participants were 
exposed to in the 
Yale TCORS 
sessions]

Weigh e-liquids
5 min
60 min
5 min
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Aim 1: Investigate the relationship of menthol flavor (vs tobacco flavor) and NMR on 
nicotine pharmacokinetics and subjective effects during directed e-cigarette 
administration. 
Experimental Design: Aim 1 focuses on the directed e-cigarette administration procedure. 
Saliva NMR will be assessed at intake appointment and will be a continuous measure in this 
study59,60. Following overnight abstinence from combustible tobacco products (CO≤10 ppm), 
African Americans who smoke will participant in a double-blind, counterbalanced and 
randomized e-cigarette exposure laboratory study where they will receive two e-liquid flavors 
(menthol, tobacco) with a fixed nicotine salt concentration in e-cigarettes (5%) on two separate 
days (one flavor condition per session). The directed e-cigarette administration procedure will 
consist of 1 fixed-puffing bout (puffing bout=10 puffs, 3 sec each puff, 30 sec puff interval) as 
done previously by my mentor, Dr. Krishnan-Sarin 61. Per the procedures conducted by my co-
mentor Dr. Benowitz’s research group 62,63, plasma nicotine levels will be assessed at baseline 
and  5, 15, 30, 45 and 60 minutes after nicotine exposure via e-liquids during the directed e-
cigarette administration procedure. Heart rate and blood pressure will be measured at 5, 15 
and 30 minutes after the final puff. Participants will rate irritation/harshness, coolness, cigarette 
craving, e-cigarette craving, liking of e-cig taste, reward/appeal of e-cig, nicotine withdrawal 
and stimulation at baseline, 5 and 15 min after nicotine concentration exposure. Participants 
will be told that they can stop anytime if they feel uncomfortable. Independent variables: sex 
(male or female), nicotine metabolite ratio, flavor (menthol, tobacco), Dependent variables: 
primary outcomes- plasma nicotine boost, nicotine area under the curve; secondary outcomes- 
cigarette craving; exploratory outcomes- reward/appeal of e-cigs, e-cig craving, 
irritation/harshness, coolness, nicotine withdrawal, stimulation, liking of e-cig taste. We will 
explore gender differences for all outcomes.
Aim 2: Elucidate the relationship between menthol flavor (vs tobacco flavor) and NMR 
on nicotine pharmacokinetics and subjective effects during e-cigarette ad libitum use
Eligibility/ Recruitment/Screening: African Americans who participant in Aim 1 will 
participate in Aim 2.
Experimental Design Aim 2 focuses on the ad-lib e-cigarette exposure. Saliva NMR will be 
assessed at intake appointment. For each lab session, 120 min after the directed e-cigarette 
exposure period (Aim 1) participants will undergo a 60 min ad-lib e-cigarette exposure session. 
For each lab session, each participant will be exposed to the same JUULpods they were 
exposed to during the directed e-cigarette exposure period. During the ad-lib e-cigarette 
period, participants can freely self-administer the e-cigarette. The ad-lib period will be video 
recorded to record puffing behaviors.  E-liquids will be measured before and after the session. 
Two research assistants will independently code the videotapes for puffing behaviors. 
Participants will be told that they can stop anytime if they feel uncomfortable. Plasma nicotine 
levels will be assessed at baseline and 15, 30 and 60 minutes after the start of the ad-lib e-
cigarette exposure period. Participants will be told that they can stop anytime if they feel 
uncomfortable. Smoking cessation materials/programs will be offered at the end of the study.  
Independent variables: sex (male or female), nicotine metabolite ratio, flavor (menthol, 
tobacco), Dependent variables: primary outcomes- plasma nicotine boost and nicotine area 
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under the curve. Secondary outcomes- measure of nicotine delivered to participant and 
cigarette craving. exploratory outcomes- number of puffs and subjective effects as mentioned 
in Aim 1. We will explore gender differences for all outcomes
The JUUL ™ and menthol and tobacco JUUL pods™[5%(59mg/ml)] will be used for this study. 
The JUUL™ is  one of the most widely used pod e-cigarette devices57,58.  Participants will not 
be allowed to keep the device.
Figure 1: Study Experimental Design
Figure 1 Legend: Depicts the time for each lab session. Participants will undergo two lab sessions. 
Participants will receive two e-liquid flavors (menthol, tobacco) with a fixed nicotine salt concentration in 
e-cigs (5%) on two separate days (one flavor condition per session). 
Assessments
1.
General Labeled Magnitude Scale (gLMS)(experimental sessions)1: For TCORS Menthol pilot, 
gLMS ratings will be obtained 5, 15, 30, 45, and 55 minutes after each puff during lab 1 and lab 
2. Participants will rate coolness, irritation/harshness, cigarette and e-cigarette craving using the 
gLMS which is a category ratio scale with 7 semantic labels: “no sensation”, “barely detectable”, 
“weak”, “moderate”, “strong”, “very strong”, and “strongest imaginable”. The labels are positioned 
quasi-logarithmically according to their empirically determined semantic magnitudes. The gLMS 
will be displayed on a monitor via a custom LabView® program, and participants will make their 
ratings using a mouse. Ratings are numerically transformed and then used for statistical analyses. 
For the K01 metabolism study will be assess irritation/harshness, coolness, cigarette craving, e-
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cig craving at baseline, 5 and 15 min after nicotine exposure during the directed puffing section 
of lab sessions.
2.
Labeled Hedonic Scale (LHS)(experimental sessions)3 : For TCORS Menthol pilot, liking of e-
cigarette taste will be assessed 5 min after each flavor exposure using the LHS scale. The LHS 
is a bipolar scale with “neutral” in the middle and 5 symmetrical semantic labels: “like/dislike 
slightly”, “like/dislike moderately”, “like/dislike very much”, “like/dislike extremely”, “most 
liked/disliked imaginable”, positioned on the scale according to their semantic magnitude. The 
LHS yields ratio-level data on the magnitude of liking/disliking of sensation equivalent to that 
produced by magnitude estimation (ME). This scale will also be displayed on a computer screen 
as above and numerically transformed. 
For K01 metabolism study, liking of e-cig taste will be assessed at baseline, 5 min and 15 min 
after nicotine exposure during the directed puffing section of lab sessions.
3.
E-cig Effects (Adapted from Drug Effects Questionnaire (DEQ61)(experimental sessions): A 
modified version of the Drug Effects Questionnaire  will be used in which participants will rate 
acute responses to the e-cig on a 0 to 100 mm scale, from “not at all” to “extremely.” 5, 15, 30, 
45, and 55 minutes after each puffing, we will assess liking/wanting of drug effects (average of “I 
feel good e-cig effects”, “I want more of that e-cig I received”, “I feel the e-cig strength” and “I like 
the e-cig effect”), stimulant effects (average of “I feel energized” and “I feel high”), and nicotine 
withdrawal (average of “I feel sleepy”, “I feel angry”, “I feel irritable”, “I am having difficulty 
concentrating”, “I feel restless” and “I feel hungry”). 
For K01 metabolism study, reward/appeal of e-cigs, nicotine withdrawal and stimulation will be 
assessed at baseline, 5 and 15 min after nicotine exposure during the directed puffing section of 
lab sessions.
4.
Carbon Monoxide (CO) levels (experimental sessions): At intake we will assess recent smoking and 
participants with ≥10ppm will be included in the study for both studies. For lab sessions for both 
studies, CO levels in exhaled breath will be measured using a MicroCO breath CO monitor and 
levels of ≤10 ppm will be used to ensure abstinence prior to the experimental sessions. 
5.
Urine Cotinine levels: At intake for both studies, urine samples will be assessed with Alere iScreen 
OFD Cotinine urine test to verify eligibility. 
6.
Salivary nicotine and cotinine levels for TCORS menthol pilot study(experimental sessions): 
Saliva nicotine and cotinine levels will be monitored using saliva samples obtained 10 times per 
session (5 min prior to and 5, 15, 30, 45, and 55 minutes after the onset of puff1, and 5, 15, 30, 
and 45 minutes after the onset of puff 2). To try to avoid contamination from buccal nicotine, 
participants will be asked to rinse their mouths prior to providing each sample. These levels will 
be used for correlational analyses with behavioral measures and will be determined using LC/MS 
techniques at the core laboratory of the YCSTP.
7. Saliva nicotine metabolite ratio or NMR (trans 3’-hydrocotinine/ cotinine) for K01 
metabolism study will be assessed through Yale TCORS. To try to avoid contamination 
from buccal nicotine, participants will be asked to rinse their mouths prior to providing 
each sample
8.
Asthma Control Test(Intake): At intake for both studies, participants will be asked to rate their 
asthma symptoms on a 1-5 scale, from “all of the time” to “none of the time”. This five question 
health survey is used to measure asthma control in individuals 12 years and older
9.
Fatigue(all appointments): At all appointments for both studies, we will use the 7-item PROMIS 
measure of fatigue which rates fatigue from 1=”never” to 5=”always”..
10. Shortness of Breath (all appointments): At all appointments for both studies, we will use the 5-
item PROMIS measure of dyspnea which rates shortness of breath from 1-10. Items include: 
shortness of breath in general, intensity of shortness of breath, frequency of shortness of breath 
and duration of shortness of breath.
11. Lung spirometry will be assessed for both studies at intake.
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12. Heart Rate, Blood Pressure, Pulse Oximetry (all appointments): For both studies, these measures 
will be assessed to monitor health status at baseline and throughout the study at each in-person 
visit. Heart rate and blood pressure will be assessed. Pulse oximetry is the measurement of the 
oxygen in the blood.  
For the K01 metabolism study, heart rate and blood pressure will be assessed at baseline 5, 15 
and 30 min after nicotine exposure.
13. Health assessment checklist (all appointments): For both studies, we will also monitor checklist 
of health symptoms (e.g., headaches, dizziness, fainting, nausea, diarrhea) and severity of 
these symptoms that could be related to nicotine exposure/vaping illness at each in-person visit.
  
14. Demographic Information (At Intake):  For both studies ,age, race, marital status, educational and 
occupational levels and medical history will be assessed with interviews and self-report forms. 
15. Nicotine Dependence (At Intake): We will use the 8-item PROMIS measure of nicotine 
dependence developed for cigarettes 64 and which we have validated for e-cigs 65, which shows 
internal consistency & measurement invariance across sex and race. 
16. Tobacco Use History Questionnaire (At Intake): For both studies, self-reports will be obtained from 
all participants; questions will be benchmarked to the NIDA PATH data. 
17. Risk perceptions of e-cigs and cigarettes: For both studies we will assess baseline risk 
perceptions of e-cigs and cigarettes. 
18. Flavor use history: For both studies we will assess the use of e-cig and cigarette flavors at 
intake.
19. Social determinants of health measures for K01 metabolism study will include assessments on 
employment status, education level, income, homeownership, experiences of discrimination, 
perceived neighborhood disadvantage, including problems (e.g., traffic, safety) and social 
cohesion and trust (e.g., connections, shared values, and willingness to help among neighbors) 
food security, utility needs, housing instability, transportation problems. These socioeconomic 
measures have been shown to be important predictors for tobacco use behaviors 66. 
20. Timeline Follow Back Interview(all appointments)67,68: For both studies, we will use of cigarettes, 
little cigars and e-cigs (with or without nicotine) will be examined using a 30-day TLFB at intake 
and experimental sessions. Test-retest reliability is high in adult smokers, and we have used it 
with younger smokers.
21. The amount of e-liquid used from each e-cigarette will be measured before and after the e-
cigarette self-administration session for both studies. 
22. Puffing behavior will be assessed by the number of puffs, and time to first puff for each of the 
four e-cigarettes in the self-administration session for both studies. Two research assistants will 
independently code the video-tapes for puffing behaviors which will then be averaged across 
raters.
23. Physical function scale will select individuals who have good physical functioning.  As part of the 
medical history, the following 4 PROMIS questions will be asked: Are you able to do chores 
such as vacuuming or yard work? Are you able to go up and down stairs at a normal pace? Are 
you able to go for a walk of at least 15 minutes? Are you able to run errands and 
shop?  Response options for these questions are “Without any difficulty”, “With a little difficulty”, 
“With some difficulty”, “With much difficulty” and “Unable to do so” (Beidelschies et al 2019). To 
be eligible, participants must respond “Without any difficulty” to all 4 questions. We assess this 
for both studies at every appointment.
24. Urine drug and pregnancy tests: Urine drug screen will assess recent drug use at intake for both 
studies. If participants test positive for any drugs except marijuana and drugs they are not 
prescribed at the in-person intake appointment, they will not be paid for the visit and will have 
the opportunity to reschedule this appointment one time.  Urine drug screen assesses 
benzodiazepines, marijuana, methadone, cocaine, methamphetamine, morphine, MDMA, 
oxycodone, barbiturates, buprenorphine, amphetamine phencyclidine, methadone metabolites, 
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tricyclic antidepressants and propoxyphene. We will administer pregnancy tests to all female 
participants at baseline and every vaping session appointment while they are enrolled in the 
study. In addition, female enrollees will be verbally asked about their pregnancy risk (such as 
unprotected sex or a missed menstrual period).  
25. Plasma nicotine levels for K01 metabolism study will be assessed using blood samples obtained 
at baseline and 5, 15, 30, 45, 60 minutes after nicotine exposure during the directed e-cigarette 
portion and plasma nicotine levels will be assessed using blood samples obtained at baseline 
and 15, 30, 60 minutes after nicotine exposure during ad-lib session. 60 ml of blood will be 
drawn at each e-cigarette exposure through insertion of an intravenous catheter during e-
cigarette directed administration session (total of 120ml for all laboratory session in study or 8 
tablespoons) which is below the IRB guidelines of 450 ml within eight research weeks. We will 
recommend participants wait at least 4 weeks to donate blood.  We will then calculate the 
nicotine boost and the area under the curve. These levels will be determined using LC/MS 
techniques through the Yale TCORS Lab and Analytical Core.   
26. Amount of nicotine delivered to participants will be assessed for K01 metabolism study. The 
amount of e-liquid in pods will be measured before and after the ad-lib e-cigarette exposure 
period. We will then multiply the amount of e-liquid used by the nicotine concentration of the e-
liquid (5%) to calculate the amount of nicotine delivered to the participants62.
5.
Genetic Testing   
N/A ☒
6.
Subject Population: Provide a detailed description of the types of human subjects who will be recruited into 
this study.
TCORS menthol pilot study
30 healthy participants will ≥21 years of age; smoking menthol cigarettes/cigars/little cigars at least 5 
per day, with CO levels  ≥10 ppm and have ≥ 3 on the urine NicAlert test, willing to abstain from all 
combustible tobacco products 12 hrs prior to each experimental session, not currently planning to 
stop smoking, limited experience with e-cigs (not more than 25 times lifetime).   
K01 metabolism study 
Eighty-five healthy African American participants (43 female and 42 males who smoke) who are ≥21 
years of age; able to read and write English, smoking at least 5 menthol cigarettes per day on at 
least 25 days or more in past month69,70, CO≥10 ppm and provide a semi-quantitative urine cotinine 
result of at least 200 ng/ml assessed with Alere iScreen OFD Cotinine, willing to abstain from  
tobacco and nicotine products 12 hrs. prior to each lab session, used e-cigarettes at least 10 times 
in the past six months, do not plan to quit e-cigarette use, not planning a smoking quit attempt ,have 
not stopped e-cigarette use due to COVID, willing to try e-cigarettes for the study, must report ever 
JUUL use and/or other nicotine salt/pod e-cigarette devices (i.e., JUUL-like), report regular menthol 
cigarette use
7. Subject classification: Check off all classifications of subjects that will be specifically recruited for enrollment in 
the research project. Will subjects who may require additional safeguards or other considerations be enrolled 
in the study? If so, identify the population of subjects requiring special safeguards and provide a justification 
for their involvement.
☐Children
☐ Healthy 
☐Fetal material, placenta, or dead fetus
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☐Non-English Speaking
☐ Prisoners
☐Economically disadvantaged persons
☐Decisionally Impaired
☐ Employees
☐Pregnant women and/or fetuses
☐Yale Students 
☐ Females of childbearing potential
NOTE: Is this research proposal designed to enroll children who are wards of the state as potential subjects?
Yes ☐  No ☒ 
8. Inclusion/Exclusion Criteria: What are the criteria used to determine subject inclusion or exclusion?
CORE INCLUSION/EXCLUSION CRITERIA FOR BOTH STUDIES:
Inclusion:

At least 21 years of age

Able to read and write English.

Smoking at least 5 menthol cigarettes/cigars/little cigars per day 

Report regular menthol cigarette use

CO≥10 ppm and have at least 200ng/ml urine cotinine

Willing to abstain from combustible tobacco products 12 hrs prior to each experimental session.

not planning a smoking quit attempt.

Have not stopped use due to COVID.

used e-cigarettes at least 10 times in the past six months.

Fully vaccinated against COVID-19.
Exclusions:

Use of psychoactive drugs including anxiolytics, antidepressants, and other psychostimulants 
unless prescribed and stable for two months.

Current diagnosis of any severe psychiatric disorder

Any significant current medical condition such as neurological, cardiovascular, endocrine, renal, 
pulmonary or hepatic pathology that would increase risk or would interfere with/mimic tobacco 
abstinence.

Known hypersensitivity to propylene glycol and nut allergies. 

Pregnant or lactating females.

current criteria for moderate or severe cannabis and alcohol use disorder per DSM-5 criteria.

current criteria for other substance use disorders per DSM-5 criteria.

Seeking treatment to stop smoking.

individuals who do not want to use e-cigarettes.

Uncontrolled asthma (defined as <20 on Asthma Control Test) AND/OR endorsement of “yes” 
to environmentally induced bronchospasm that requires prescription Epipen)

blood pressure >170/>100 and heart rate >100 

vaping of CBD/THC or marijuana related products in the past 3 months

For current THC vapers: Any report of mild or great EVALI-related symptoms (i.e. cough, 
shortness of breath, chest pain, nausea, vomiting, stomach pain, diarrhea, fever, chills, or 
weight loss) without non-EVALI reasonable and proximal cause
K01 metabolism study-specific inclusion criteria: 
1) African American
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2) must report history of JUUL and other nicotine salt/pod devices (i.e., JUUL-like)
9. How will eligibility be determined, and by whom? 
Participants will have the option to sign informed consent via RedCap, through mail or in-person 
and complete initial assessments including medical and substance use histories for intake remotely 
or in-person. If eligible following administration of remote intake, participants will come in for a very 
brief visit in which biochemical measures will be collected: urine drug and pregnancy tests, breath 
CO, urine cotinine levels, saliva NMR, pulse oximetry readings, lung spirometry, heart rate and 
blood pressure. If participants do not wish or do not have the internet capabilities to participate in 
remote intake, the participants can also sign informed consent and assessments in person at 
Connecticut Mental Health Center.
During the duration of the study, participants will be given a questionnaire daily to assess COVID 
symptoms they may be experiencing. This survey is in line with Yale’s Return to Campus Protocol 
(https://ypps.yale.edu/sites/default/files/files/StayHome.pdf). If yes is endorsed for any symptom, the 
research team will follow up via phone call and ask participant to describe symptoms and rate symptom 
severity. For any symptoms described as severe and unrelated to other causes (i.e. headache for 
someone who is abstaining from their normal caffeine, muscle pain related to a workout, symptoms of 
seasonal allergies), the research team will evaluate the symptoms with a study physician. Based on 
physician recommendation, study participation will be paused until a negative COVID test can be 
produced. All participants will be instructed to contact their doctor and/or get a COVID test under these 
conditions. This COVID symptom check survey will be started the day prior to the first in person lab 
session and will continue through completion of the ad-lib period. Participants will not be allowed to 
complete in person sessions unless the COVID symptom checks are completed. Once participant 
arrive at their appointment location, a COVID screening (including temperature and symptom check) 
will be conducted as part of their appointment.  If a subject answers “yes” to any COVID screening 
question or has a temperature of ≥100˚F, their appointment must be discontinued, they must be 
escorted from the building to a separate isolation tent outside the facility (if appointment is at CMHC), 
and instructed to immediately contact their primary health care provide or call the Campus COVID 
Resource line (203-432-6604). At satellite sites at which research staff are themselves conducting 
primary symptom screening outside the building as described above, participants will not be escorted to 
an isolation tent, but instructed to immediately contact their primary health care provider or call the 
Campus COVID Resource line (203-432-6604).
If subject is suspected to be intoxicated at intake visit, a breathalyzer will be performed.  If the BAC 
level is > 0.05, we will ask the subject to remain in the clinic and we will repeat the breathalyzer 
periodically.  During this time, medical procedures (e.g. urine, etc.) may be done based on the 
judgement of the provider; no self-report type assessments will be administered.  The subject’s BAC 
level must be <0.05 for subject to leave the clinic, otherwise a friend can be called, or other 
transportation can be arranged.
10. Risks: Describe the reasonably foreseeable risks, including risks to subject privacy, discomforts, or 
inconveniences associated with subjects participating in the research. 
Experiencing nicotine withdrawal: During the abstinence period prior to the e-cigarette lab exposure 
sessions in Aim 1, participants may experience symptoms of nicotine withdrawal, such as nicotine craving, 
mild anxiety, restlessness, irritability, difficulty concentrating, loss of energy and excessive hunger. These 
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are normal symptoms that people experience when they stop smoking and they can be uncomfortable, but 
they are not life threatening. 
Breath, saliva and urine collections: Breath CO, saliva, and urine collections should add no risks other than 
those normally associated with these procedures. 
Blood Drawing (K01 Metabolism only): Drawing blood is a safe and standard medical procedure. 
Sometimes a bruise will occur at the puncture site and rarely a blood clot or infection will occur in the 
vein. Certain individuals may feel light-headed during venipuncture.
Intravenous Access: Insertion of an intravenous catheter involves risk for hematoma at the site of the 
venous puncture. Very rarely, venous puncture can also result in a blood clot or infection
Rating Scales and Assessments: These are all noninvasive and should add no risk. The major 
disadvantages are the time taken to complete them, and possible breach of confidentiality. 
Use of e-cigarette: Participants will be informed about the following Center for Disease Control (CDC) 
information about vaping: There have been recent reported cases of severe pulmonary illness linked to 
‘vaping’ or e-cigarette use. These cases included symptoms such as coughing, shortness of breath, 
chest pain, fever, fatigue, nausea, vomiting, diarrhea, and/or abdominal pain. Some patients reported 
symptoms to have occurred over a few days and some reported to have occurred over a few weeks. 
Vaping-related disorders have ranged from mild to severe with hospitalization, intensive care with 
breathing machines and in some cases death. In most cases, but not all, people experiencing these 
symptoms were using cannabidiol (CBD) and marijuana (THC) e-liquids, and/or using e-cigarette 
devices and e-liquids that were mixed at home or purchased off market (such as purchasing an e-liquid 
or device on the street, not from a licensed retailer). Laboratory data show that Vitamin E Acetate, an 
additive in some THC-containing e-cigarette or vaping products is strongly linked to EVALI.
The Center for Disease Control (www.cdc.gov) has issued the following information on vaping: 

CDC and FDA recommend that people not use THC-containing e-cigarette, or vaping, products, 
particularly from informal sources like friends, family, or in-person or online dealers.

Vitamin E acetate should not be added to any e-cigarette, or vaping, products. Additionally, 
people should not add any other substances not intended by the manufacturer to products, 
including products purchased through retail establishments.

Adults using nicotine-containing e-cigarette, or vaping, products as an alternative to cigarettes 
should not go back to smoking; they should weigh all available information and consider 
using FDA-approved smoking cessation medications. If they choose to use e-cigarettes as an 
alternative to cigarettes, they should completely switch from cigarettes to e-cigarettes and not 
partake in an extended period of dual use of both products that delays quitting smoking 
completely. They should contact their healthcare professional if they need help quitting tobacco 
products, including e-cigarettes, as well as if they have concerns about EVALI.

E-cigarette, or vaping, products (nicotine- or THC-containing) should never be used by youths, 
young adults, or women who are pregnant.

Adults who do not currently use tobacco products should not start using e-cigarette, or vaping, 
products.

THC use has been associated with a wide range of health effects, particularly with prolonged 
frequent use. The best way to avoid potentially harmful effects is to not use THC-containing e-
cigarette, or vaping, products.

Persons engaging in ongoing cannabis use that leads to significant impairment or distress 
should seek evidence-based treatment by a healthcare professional.
Use of propylene glycol/ vegetable glycerin: E-cigarettes contain other chemicals besides nicotine 
including propylene glycol/vegetable glycerin. At this time, we do not know the risks associated with the 
propylene glycol/ vegetable glycerin that may be in e-liquids used in this study. However, there may be 
unforeseen risks (such as allergic reactions). We will be using e-liquids with propylene glycol/vegetable 
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glycerin concentrations that are available in e-liquids on the market. Some research has indicated that 
in large doses propylene glycol and vegetable glycerin can be harmful. Little is known about the short 
or long-term effects of inhaling flavorants. However, the participants will be allowed to stop the session 
at any point if they experience any side effect. Research staff will monitor e-cigarette use during the lab 
session. Participants who report recent THC vaping (within the last 90 days) will be monitored for 
EVALI symptoms, which are currently evaluated on our Health Assessment Checklist. Specifically, if a 
participant indicates EVALI symptoms (i.e. cough, shortness of breath, chest pain, nausea, vomiting, 
stomach pain, diarrhea, fever, chills, or weight loss), the researcher will assess if the symptom is 
related and proximal to a non-EVALI cause (e.g. Nausea/vomiting related to food poisoning, Shortness 
of breath related to seasonal allergies). If a reasonable & proximal cause is identified, participant will 
continue with session. If not, participation will be deemed ineligible (if identified at intake) or withdrawn 
(at lab sessions). We will consult with study pulmonologist for any cases in which the etiology of 
symptoms is not apparent or is unclear. Additionally, lung spirometry readings are already assessed 
intake. Participants who report THC vaping will receive education material about EVALI from 
https://www.yalemedicine.org/conditions/evali. All participants will have a physical exam( i.e. review of 
medical history, heart rate, blood pressure, lung spirometry, pulse oximetry) and be deemed healthy 
prior to participation and will continue to monitor their health closely during the study. Participants will 
be informed that if they experience any symptoms (cough, shortness of breath, chest pain, nausea, 
vomiting, stomach pain, diarrhea, fever, chills, or weight loss) or have other concerns, that they should 
let us know and also let their doctor know right away. Any participants reporting mild or moderate 
respiratory symptoms will be referred to their primary care physician or will be referred to care.  They 
will be informed to the emergency room right away if their symptoms are severe increase rapidly. It is 
possible that the hospital may report cases of illness after using e-cigarettes to the State Health 
Department and the CDC. The report will contain the name and address of the person who is ill. Given 
the risk of THC vaping and EVALI, participants who report THC vaping and have endorsement of these 
symptoms at baseline without reasonable and proximal cause will be ineligible. If these participants 
develop symptoms during the study without reasonable and proximal cause, they will be withdrawn, 
referred to their primary care physician, or other care as needed.
 
Additionally, in rare cases there have been reports of e-cigarettes exploding and causing serious injury 
to people. Evidence suggests that these explosions are battery related. To avoid a vape related 
explosion the research staff has implemented the following Food and Drug Administration 
recommendations: 1) The research staff will keep loose batteries in a case to prevent contact with 
metal objects, 2) The research staff will always charge the battery with the charger that the e-cigarette 
came with 3) The e-cigarettes will not be charged overnight or left unattended 4) The research staff will 
replace the e-cigarette battery if it becomes wet or damaged. Furthermore, acute exposure to e-
cigarette aerosol may result in mouth and throat irritation, dry cough at initial use and typical sensory 
effects of menthol in the mouth and throat.
Nicotine and flavor administration: Common side effects of nicotine include nausea, vomiting, heartburn, 
and elevated heart rate and blood pressure. Toxic doses of nicotine may cause abdominal pain, 
hypersalivation, diarrhea, dizziness, confusion, hearing and vision problems, syncope, seizures, 
hypotension, irregular pulse, and death. However, these toxic effects occur at doses 40 to 50 times 
higher than those that will be used in our studies. Moreover, by recruiting adults who already have 
experience with tobacco products, including e-cigs, we will further mitigate the risk of these side effects. 
Furthermore, our adult sample will be those who are regular users of combustible tobacco and the e-
cigarette nicotine concentrations that will be used are in the range commonly used by both youth and 
adults. Nicotine intake during pregnancy may be associated with increased risk for spontaneous abortion, 
increased perinatal mortality and with low infant birth weights.  We will exclude women who are pregnant 
or nursing from this study. Menthol administration produces typical sensory effects in the mouth and 
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throat. The doses of menthol that are found in cough drops, ranging 1 to 10 mg are regarded to be 
safe. Despite ubiquitous use of menthol in a wide range of products, only few cases of menthol 
poisoning have been described in the literature following very high doses of menthol ingestion, 200 mg 
or more.  Menthol poisoning reported to cause ataxia, confusion, coma, nausea, and vomiting. 
However, these toxic effects occur at doses 20 to 30 times that which will be used in our studies. We 
are not aware of any toxic effects from the tobacco flavor being used in this study, but participants will 
be told that if they feel any adverse events or want to stop they are free to do so. We will also monitor 
for adverse events. 
Drug use: Participants will be asked about their current and past use of illicit "street" drugs at the intake 
to rule out substance abuse. If they are currently using drugs, they may not be eligible to participate. If 
at any time during their participation they report they want to hurt themselves or hurt anyone else, we 
will immediately direct them to appropriate authorities to ensure their safety.
Limits to confidentiality: All participants will be specifically told that we will not reveal any personal 
information collected as part of the research procedures, including their reported use of cigarettes, e-
cigarettes and other substance use history. However, there is always the possibility that participation in 
this study may make others, such as friends and family members, aware of their tobacco use status. They 
will be told that if they do not feel comfortable with this, then they should not participate in the project.  
They will also be told that if they report any information to us about abuse or homicidal/suicidal behavior, 
we will be required to report this information to the appropriate authorities. 
Lastly, any incidental clinical findings will be evaluated on a case by case basis and remain confidential 
unless there is concern about imminent danger. This will be clearly stipulated in the consent forms.
Smoking and Vaping and COVID-19: Although scientific evidence is incomplete, some studies have 
suggested that use of e-cigarettes may add to a persons risk of getting COVID -19 and may contribute to 
the severity of illness if you do get the virus. Additionally, smokers and e-cigarette users have to take their 
face masks off when they smoke or vape. So even between puffs, they may be unknowingly infected with 
the coronavirus, they might exhale contagious droplets and aerosols into the air, which could be inhaled by 
others nearby. Secondhand cigarette smoke is known to cause health problems, and although there isn’t 
yet scientific proof that it can spread the coronavirus and cause COVID-19, it may be possible. Smoking or 
vaping inside is even riskier. In a closed environment, infectious droplets and particles can build up in the 
air, putting others in the room at risk if there’s no ventilation.
11. Minimizing Risks: Describe the manner in which the above-mentioned risks will be minimized.
Risks Associated with Blood Drawing – (K01 Metabolism Study only)
To minimize risks associated with blood draws and IV-line insertion, experienced venipuncture-certified 
personnel will do all the blood-drawing procedures. Subjects will have approximately 60 ml of blood 
drawn at e-cigarette exposure lab session 1 and lab session 2. Therefore, the total amount of blood 
drawn during this study is 120 ml, which is well below the IRB guidelines of 450 ml within eight research 
weeks. We will advise participants to not donate blood for at least 4 weeks after participation.  
  
Recruitment and Informed Consent 
Recruitment will be through advertisements in Craigslist, Facebook, novelties (e.g. coasters, 
matchbooks, etc.) flyers in the community. At the initial intake session, potential participants will sign 
informed consent and complete initial assessments. Medical and substance abuse histories, urine drug 
and pregnancy tests, breath CO and urine cotinine levels will be obtained from all participants. If all the 
study criteria are met and consent is obtained, the research assistant will work with the participant to 
set up the experimental schedule.
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 Protections against Risk 
All the procedures will follow the guidelines provided by the National Advisory Council on Drug Abuse 
(NACDA) guidelines for administration of drugs for research purposes71.  
Specifically, the NACDA recognizes that substance abuse research involving adults is vital to 
understanding factors contributing to the initiation, maintenance and cessation of substance use. In 
order to reduce risk they have requested that all research requiring administration of drugs should 
include 1) A serious and concerted effort to link these individuals to drug abuse treatment, 2) Inclusion 
of medical screener to screen for any medical issues and if needed conduct a physical exam  and 3) A 
thorough assessment of the risks entailed if participants are to be exposed to higher doses, rate of 
administration, and/or new route of administration than they would normally encounter by their own 
choice in their usual circumstance. 
 
This study presents greater than minimal risk given that we will be providing participants with an 
electronic cigarette in a lab. However, we will reduce risk by:
Obtaining consent from >21 year olds
Requiring that adults report experience with e-cigs.
Using well-defined inclusion/exclusion criteria to rule pre-existing medical conditions. 
Using study staff who have extensive expertise conducting tobacco research and working with adults 
and who are sensitive to the issues that may arise in working with combustible tobacco users.  
Monitor heart rate and blood pressure during experimental sessions
Protect right to privacy through coding of data and proper storage of research records.  
Obtain a certificate of confidentiality from NIH to further protect the research records of these 
participants.
Use the Yale TCORS Independent Data Safety Monitoring Board including experts in the field of 
tobacco use behaviors and challenge studies (Dr. Tony George, FRCPC, Professor and Co-
Director, Division of Brain and Therapeutics, Dept. of Psychiatry, U of Toronto; Dr. Thomas 
Brandon, Professor and Chair, Department of Health Outcomes & Behavior, H. Lee Moffitt Cancer 
Center & Research Institute) and a statistical expert (Dr. Hanga Galfalvy, Assistant Professor of 
Neurobiology, Columbia University
COVID-19:  
procedures: For the duration of the study, participants will be given a questionnaire daily to assess 
COVID symptoms they may be experiencing. This survey is in line with Yale’s Return to Campus 
Protocol (https://ypps.yale.edu/sites/default/files/files/StayHome.pdf). If yes is endorsed for any 
symptom, the research team will follow up via phone call and ask participant to describe symptoms and 
rate symptom severity. For any symptoms described as severe and unrelated to other causes (i.e. 
headache for someone who is abstaining from their normal caffeine, muscle pain related to a workout, 
symptoms of seasonal allergies), the research team will evaluate the symptoms with a study physician. 
Based on physician recommendation, study participation will be paused until a negative COVID test 
can be produced. All participants will be instructed to contact their doctor and/or get a COVID test 
under these conditions. This COVID symptom check survey will be started the day prior to the first in 
person lab session. Participants will not be allowed to complete in person sessions unless the COVID 
symptom checks are completed. Once participant arrive at their appointment location, a COVID 
screening (including temperature and symptom check) will be conducted as part of their appointment.  
If a subject answers “yes” to any COVID screening question or has a temperature of ≥100˚F, their 
appointment must be discontinued and instructed to immediately contact their primary health care 
provider or call the Campus COVID Resource line (203-432-6604). For the safety of participants, to 
limit in-person interactions during experimental sessions, we will give instructions and communicate to 
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participants from another location remotely using Zoom. Hand sanitizer will be available, and 
participants will be asked to wear gloves for the duration of the lab session. All devices and areas will 
be sanitized before and after each participant. Participants will be required to wear a mask over their 
nose and mouth when they are not vaping. This study will also recruit individuals that are fully 
vaccinated against COVID-19.
12. Data and Safety Monitoring Plan: Include an appropriate Data and Safety Monitoring Plan (DSMP) based on 
the investigator’s risk assessment stated below. (Note: the HIC will make the final determination of the risk to 
subjects.)
a. 
What is the investigator’s assessment of the overall risk level for subjects participating in this 
study? Greater than minimal risk
b.
If children are involved, what is the investigator’s assessment of the overall risk level for the 
children participating in this study? n/a
c.
Include an appropriate Data and Safety Monitoring Plan. Examples of DSMPs are  
available here http://your.yale.edu/policies-procedures/forms/420-fr-01-data-and-safety-
monitoring-plans-templates for
i.
Minimal risk
ii.
Greater than minimal
The Principal Investigator will be responsible for monitoring the safety and efficacy of this trial, 
executing the Data and Safety Monitoring (DSM) plan, and complying with the reporting requirements. 
The Yale TCORS has established a DSMB to provide the highest protection for study participants in all 
projects. The DSMB is composed of individuals not otherwise affiliated with the study but who are 
experienced in various aspects of conducting clinical trials and have expertise in tobacco research (Drs. 
Tony George (Chair), Thomas Brandon (Member) and Hanga Galfalvy [Statistician]). The 
Administrative Core will coordinate the DSMB meetings, will create formal summary reports, and will 
report DSMB comments back to the PI. The PI will provide the DSMB minutes to the Human 
Investigation Committee and to the NIH.The PI will also provide a summary of the DSM report to NIDA 
on an annual basis as part of the progress report. The DSM report will include the participants’ 
sociodemographic characteristics, expected versus actual recruitment rates, treatment retention rates, 
any quality assurance or regulatory issues that occurred during the past year, summary of adverse 
events (AEs) and Serious AEs, and any actions or changes with respect to the protocol. The DSM 
report to NIDA will also include, when available, the results of any efficacy data analysis conducted.
Data Monitoring Plan
Data will be collected using standardized forms and will be identified with the study ID of the participant. 
The codes that link the name of the participant and the study ID will be kept confidential by the Principal 
Investigator in a secured cabinet. A data manager will set up studies in the Oncore system and data will 
be scanned forms using the Teleforms software and exported to a database on a secure computer. 
Error checking and data validation will occur weekly and any problems will be queried and resolved 
immediately.  Dr. Jackson will receive monthly data quality reports to check for completeness and 
accuracy of key demographic and prognostic variables, as well as rates of recruitment, retention, and 
follow-up.  Preliminary analyses will be conducted to provide an overview of the data and test 
assumptions underlying the statistical entered using Teleforms data scanning. Furthermore, the data 
manager will perform data quality control functions, maintain the secure database on the Yale server, 
and interface with the statisticians and investigators. 
Multiple measures are in place to ensure the validity and integrity of the data.  First, all research staff 
receive Human Subjects Protection training. Second, formal training in clinical assessments and 
procedures will be conducted to ensure quality of the data and help implement and improve recruitment 
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strategies so that enrollment goals are achieved. Third, weekly research staff meetings take place, as a 
forum for in-service training as well as to discuss questions regarding issues that arise in the research 
protocols.  Lastly, adherence to assessment administration will be monitored and if research drift is 
observed, the research assistants will be re-trained. 
Safety Monitoring Plan
During screening, participants will provide self-report of psychological and physical health. Participants 
will be terminated from participation if the investigator feels that their health or well-being may be 
threatened by continuation in the study. If a participant from the study shows interest in quitting use of 
any tobacco products, an appropriate referral will be made to one of our local smoking cessation 
programs.
This protocol presents a minor increase over minimal risk to the subjects and adverse events are not 
anticipated. In the unlikely event that such events occur, serious and unanticipated and related adverse 
events will be reported in writing within 48 hours to the Yale IRB and NIDA. The initial SAE report will 
be followed by submission of a completed SAE report to both institutions. In the event that a participant 
either withdraws from the study or the investigator decides to discontinue a participant due to an SAE, 
the participant will be monitored by the investigator via ongoing status assessment until 1) a resolution 
is reached i.e., the problem requiring hospitalization has resolved or stabilized with no further changes 
expected 2) the SAE is determined to be clearly unrelated to the study intervention, or 3) the SAE 
results in death. Additionally, medical symptoms will be monitored throughout the study for any 
changes including symptoms associated with nicotine and EVALI (e.g., nausea, vomiting, rapid 
heartbeat, shortness of breath). All participants will be instructed to contact the PI and study staff about 
any side effects or changes in their health that they notice and these will be reviewed by a study 
physician (Dr. Steve Baldassari, a pulmonologist) as needed. Positive findings of a change in symptom 
to severe would trigger clinical review by PI and study physician with potential referral to a physician or 
ED if deemed potentially related to lung illness.
Outcome of SAEs will be periodically reported to NIDA. A summary of the SAEs that occurred during 
the previous year will be included in the annual progress report to NIDA.
The principal investigator, Dr. Jackson, will be responsible for evaluating the adverse events and study 
data at regular intervals and determine whether the adverse event affects the Risk/Benefit ratio of the 
study and whether modifications to the protocol (at Risks to Subjects) or consent form (at Risks and 
Inconveniences) are required.  During the review process, the PI will evaluate whether the study should 
continue unchanged, require modification/amendment, continue or close to enrollment.  Either the PI or 
the IRB or the DSMB have the authority to stop or suspend the study or require modifications.  The 
review of all adverse events by the PI will determine the attribution and grade of severity of the adverse 
event by using the following scales:
Attribution of Risk Categories:
Definite: 
Adverse event(s) will clearly be related to investigational agent(s) or other 
intervention
Probable: Adverse event(s) will likely be related to investigational agent(s)
Possible:  Adverse event(s) may be related to investigational agent(s)
Unlikely: 
Adverse event(s) will doubtfully be related to investigational agent(s)
Unrelated: Adverse event(s) will clearly not be related to the investigational agents(s)
Grades of Risk:
0:
No adverse event or within normal limits
1: Mild adverse event
2: Moderate adverse event
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3: Severe adverse event resulting in hospitalization or prolongation of existing hospitalization, 
a persistent or significant disability/incapacity, or a congenital anomaly/birth defect 
4: Life-threatening or disabling adverse event
5: Fatal adverse event
d. For multi-site studies for which the Yale PI serves as the lead investigator:
i.
How will adverse events and unanticipated problems involving risks to subjects or others be 
reported, reviewed and managed? Write here
ii.
What provisions are in place for management of interim results? Write here
iii.
What will the multi-site process be for protocol modifications? Write here
13. Statistical Considerations: Describe the statistical analyses that support the study design. 
Data Management: This pilot study outcomes will be collected using scannable forms (Teleforms) 
provided by the YCSTP Administrative Core. The scanned forms will be processed through the Teleforms 
software and exported to a database on a secure computer. Error checking and data validation will occur 
weekly and any problems will be queried and resolved immediately.  The PI will receive monthly data 
quality reports to check for completeness and accuracy of key variables, as well as rates of recruitment, 
retention, and follow-up.  
Statistical analyses for TCORS Menthol Pilot Study: Preliminary analyses will provide an overview of the 
data (e.g., randomization success, outcome distribution, missingness patterns). Outcome analyses will 
be intent-to-treat and using mixed-effects models. These models allow for different numbers of 
observations per subject, use all available data, and can handle missing-at-random data. If model 
assumptions will appear to be violated, we will transform the data or fit more flexible generalized linear 
or nonparametric mixed models. We will estimate effects for a larger study.
The mixed models will include gender (female, male) as a between-subject factor, flavor (menthol, 
tobacco), nicotine form (salt and freebase) as within-subject factors, and measurement time (time-within-
experimental session). The models will also include all possible interactions among nicotine form and 
flavor and adjust for the stratification variables (sex). We anticipate significant main effects of flavor on 
liking/wanting of drug effects and e-cigarette taste. In addition, we expect significant main effects of 
nicotine form on irritation/harshness. Similar models will be used for secondary outcomes (nicotine-
induced stimulation, craving and withdrawal). 
Statistical Analysis for K01 Metabolism Study: Preliminary analyses will provide an overview of the data 
(e.g., randomization success, outcome distribution, missingness patterns). Outcome analyses will be 
intent-to-treat and using mixed-effects models. These models allow for different numbers of observations 
per subject, use all available data, and can handle missing-at-random data. If model assumptions appear 
to be violated, we will transform the data or fit more flexible generalized linear or nonparametric mixed 
models. Aim 1 and Aim 2: The mixed models will include baseline NMR (continuous), time within lab 
(within-subject factor), flavor (menthol, tobacco; within-subject factor), their three-way interaction, all 
corresponding two-way interactions and main effects. The model will also adjust for the between-subject 
factor sex (female, male). We will use Bayesian information criterion (BIC) to select the best fitting 
correlation structure for the repeated measures within subject. We will use graphical methods and 
polynomial terms to investigate whether the relationship between NMR and outcomes is linear. Statistical 
training and support will be provided by my co-mentor Dr. Gueorguieva who served as the Lead 
Biostatistician for Yale TCORS 1.0 and currently for Yale TCORS 2.0. She has also led statistical analysis 
efforts on similar experimental e-cig projects through the Yale TCORS61.  Power Analysis: With 85 
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subjects in total (43 women, 42 men) we will have 80% power at two-sided alpha level 0.05 to detect a 
correlation of 0.30 or bigger in absolute value between NMR and the primary study outcomes. For the 
within subject comparisons of the tobacco and menthol flavor sessions, with 85 individuals we will have 
80% power at two-sided alpha level 0.05 to detect a medium effect size (Cohen's d’=0.32) for the primary 
study outcomes. This is a cross-over study, so all 85 participants will participate in Aim 1 and Aim 2 of 
this K01 proposal.
SECTION II: RESEARCH INVOLVING DRUGS, BIOLOGICS, RADIOTRACERS, PLACEBOS AND DEVICES
If this section (or one of its parts, A or B) is not applicable, check off N/A and delete the rest of the section.
A.  RADIOTRACERS
☒N/A
1.
Name of the radiotracer: Write here
2.
Is the radiotracer FDA approved?    ☐YES 
☐NO
If NO, an FDA issued IND is required for the investigational use unless RDRC assumes oversight. 
B.  DRUGS/BIOLOGICS    ☐N/A  (IND not applicable; ITP assessed)
TCORS Menthol Pilot Study 
The Suorin iShare ™ and available e-liquids will be used for this study.  The Suorin iShare ™ is a 
refillable pod system e-cigarette device composed of a battery without voltage control and a refillable 
pod that contains the e-liquid, mouthpiece and coil. It is among one of the pod e-cigarette devices that 
are used widely57,58 .We have received an  ITP from the FDA to use this e-cigarette device.
The following e-liquids will be purchased from e-liquid from American eLiquid Store:
1) DuraSmoke® Tobacco Menthol eLiquid  36mg/ml 
2)Tobacco - Menthol eLiquid AmericaneLiquid®  36mg/ml
3)DuraSmoke® Tobacco Virginia eLiquid  36mg/ml
4)Tobacco - Virginia Flue Cured eLiquid AmericaneLiquid® 36mg/ml 
We have received documentation from the American eLiquid Store stating that the above e-liquids were 
on the market prior to August 2016 so we do not need an ITP for these e-liquids.
 
K01 Metabolism Study
The JUUL ™ and JUULpods™[5%(59mg/ml)] will be used for this study.  The JUUL™ is  one of the 
most widely used pod e-cigarette devices57,58 . We do not need an ITP from the FDA to use 
this e-cigarette device and products as they predate the enforcement compliance date.
The following JUULpods will be purchased:
1)Menthol eLiquid 59mg/ml (5%)nicotine
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2)VirginiaTobacco eLiquid 59mg/ml (5%)nicotine
1.
If an exemption from IND filing requirements is sought for a clinical investigation of a drug product that is 
lawfully marketed in the United States, review the following categories and complete the category that 
applies (and delete the inapplicable categories): IND not applicable.
2.
Background Information: Provide a description of previous human use, known risks, and data addressing 
dosage(s), interval(s), route(s) of administration, and any other factors that might influence risks. If this is 
the first time this drug is being administered to humans, include relevant data on animal models. 
TCORS Menthol Pilot Study
The devices and e-liquids used in this study are commercially available and we will obtain an ITP from 
the FDA.  We obtain all our e-liquid from American eLiquid Store. The e-liquid mixture (propylene glycol 
[PG], vegetable glycerin [VG] and tobacco and menthol will consist of a concentrated flavor liquid 
added to a base liquid which will consist of a commonly used ration of 50% PG and 50% VG. PG is the 
original base liquid and is believed to produce a throat sensation (“throat hit”) which mimics the feel of 
smoking a cigarette. VG is included to enhance the volume of vapor production, giving a greater 
sensory illusion of smoking. We will use 36mg/ml freebase nicotine and 36mg/ml nicotine salt e-liquid 
solutions. In order to ensure that we have adequate amount of e-liquid, of the same constituency, we 
will purchase large quantities of these solutions prior to starting these experiments which will be stored 
at and dispensed at John Pierce Labs. The commercially available Suorin iShare auto battery and 
Suorin iShare replacement pods will be used. This e-cigarette is similar in size and function to other 
commercially available more popular pod style devices. All of the e-liquids will be obtained from 
American eLiquid Store, which manufactures all its products in Wauwatosa, WI and reports being the 
first e-liquid manufacturer in the US to obtain the International Organization for Standardization (ISO) 
9001:2008 and Current Good Manufacturing practices (cGMP) certification. A new e-cigarette device 
will be used for each subject, and new pods will be used for each experiment. Pods will be filled with e-
liquid mixtures at John Pierce Labs.  
K01 Metabolism Study
The commercially available JUUL ™ and commercially available JUULpods™[5%(59mg/ml)] 
will be used for this study. The JUULpods contain menthol flavor, tobacco flavor and 30% 
propylene glycol (PG) and 60% vegetable glycerin (VG). PG is the original base liquid and is 
believed to produce a throat sensation (“throat hit”) which mimics the feel of smoking a 
cigarette. VG is included to enhance the volume of vapor production, giving a greater sensory 
illusion of smoking. A new e-cigarette device will be used for each subject, and new pods will 
be used for each experiment.
3. 
Source:  Identify the source of the drug or biologic to be used. Write here
a)
Is the drug provided free of charge to subjects? ☒YES 
☐NO 
If yes, by whom? 
TCORS Menthol Pilot Study
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The investigator will be purchasing the e-liquids from the American eLiquid Store website for 
this study.  These will be stored at John Pierce Labs.
K01 Metabolism Study
The investigator will be purchasing the e-liquids from the JUUL company
4.
Storage, Preparation and Use: Describe the method of storage, preparation, stability information, and for 
parenteral products, method of sterilization and method of testing sterility and pyrogenicity.
       TCORS Menthol Pilot Study
After the e-liquids are received, they will be delivered and stored in appropriate light/temperature 
conditions at John Pierce Labs, which is a secured building.  The liquids will be kept in a locked 
storage container in a drawer within the lab room.  On the day prior to the lab sessions, a research 
assistant/associate/fellow who is not involved in the actual conduct of the lab sessions will fill the e-
cigs.  The information on randomizations to nicotine condition and flavors for each experimental 
session has been generated by study biostatisticians. This information is stored for each participant 
in an individual envelope and a printed study ID on the cover. These envelopes are stored at Pierce 
lab along with the purchased e-liquids.  The individual filling the pods will be notified of which 
subject ID number needs to be filled and they will then go to Pierce labs and open the envelope and 
fill the three pods with the appropriate e-liquids. First, they will label each pod with the study ID 
number and lab 1 and 2 respectively.  Each bottle of e-juice will be shaken vigorously prior to filling 
the pods.  Next, they will open the top of the pod and using a mechanical pipette will load .9ml into 
the pipette from the e-juice bottle and carefully transfer it into the pod.  This will be completed for all 
lab sessions.  Each pod is then stored in a separate airtight bag to avoid cross contamination of 
flavors.  The individual bags are then stored together in a larger bag labeled with the study ID 
number and stored back in the locked container until the lab is set to begin.  Once the research 
assistant is ready to begin each lab, they will open the locked container, take the appropriate pod 
and leave the others.  At the end of the lab, they will return the pod used that day to its proper bag 
and again return it to the lock box.  None of the e-juice or pods will be transported outside of Pierce 
lab.   The research staff will have the group randomization list and will dispense the appropriate e-
liquid (nicotine condition, flavor) needed for each subject.
K01 Metabolism Study
After the pods and e-cigarettes are received, they will be delivered and stored in appropriate 
light/temperature conditions at YNHH pharmacy. On the day prior to the lab sessions, a pharmacist 
who is not involved in the actual conduct of the lab sessions will dispense the e-cigarette and pods.  
The information on randomizations to nicotine condition and flavors for each experimental session 
has been generated by study biostatisticians. This information is stored for each participant in an 
individual envelope and a printed study ID on the cover. These envelopes are stored at the 
pharmacy. The pharmacist will be notified of which subject ID number needs to be filled and they 
will open the envelope and dispense the e-cigarette with the appropriate pods. First, they will label 
each pod with the study ID number and lab 1 and 2 respectively. Each pod is then stored in a 
separate airtight bag to avoid cross contamination of flavors.  The individual bags are then stored 
together in a larger bag labeled with the study ID number and stored back in the locked container 
until the lab is set to begin.  Once the research assistant is ready to begin each lab, the pharmacist 
will have the pods and e-cigarette sent to the HRU. The research staff will have the group 
randomization list and will dispense the appropriate e-liquid flavor needed for each subject.
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Check applicable Investigational Drug Service utilized:
    ☒  YNHH IDS                                                   ☐  CMHC Pharmacy                                           ☐ West Haven VA
    ☐  PET Center                                                      ☐    None      
    ☒  Other: John Pierce Lab
Note: If the YNHH IDS (or comparable service at CMHC or WHVA) will not be utilized, explain in detail how the PI 
will oversee these aspects of drug accountability, storage, and preparation.  
5.
Use of Placebo: 
☒Not applicable to this research project- “placebo” condition is absence of flavoring in 
the Nicotine?  
 B.  DEVICES
 ☒N/A  Tobacco distribution devices listed under biologics.   
1.
Are there any investigational devices used or investigational procedures performed at Yale-New Haven 
Hospital (YNHH) (e.g., in the YNHH Operating Room or YNHH Heart and Vascular Center)?  ☐Yes   ☒No 
  
SECTION III: RECRUITMENT/CONSENT AND ASSENT PROCEDURES 
1. Targeted Enrollment: Give the number of subjects: 
a.
Targeted for enrollment at Yale for this protocol: 
TCORS Menthol Pilot Study 
We anticipate dropout so we will recruit 60 subjects. We anticipant 60 participants to participate 
in the initial appointment and 42 to complete lab session 1 and 37 to complete both lab sessions. 
Our target for completion is 30 participants.
K01 Metabolism Study
We anticipate dropout so each year (5 years total) we will recruit 23 subjects. We anticipant 23 
participants to participate in the initial appointment and 17 to complete lab session 1 and 2. Our 
target for completion is 85 participants.
b.
If this is a multi-site study, give the total number of subjects targeted across all sites: Write here
2.
Indicate recruitment methods below.  Attach copies of any recruitment materials that will be used.
☒Flyers
☒ Internet/web postings
☒ Radio
☒ Posters
☒ Mass email solicitation
☐ Telephone
☐ Letter
☐ Departmental/Center website
☐ Television
☐ Medical record review* 
☐ Departmental/Center research boards
☒ Newspaper
☐ Departmental/Center newsletters
☐ Web-based clinical trial registries
☒ Clinicaltrails.gov 
☒ YCCI Recruitment database
☒ Social Media (Twitter/Facebook): 
☐ Other: 
* Requests for medical records should be made through JDAT as described at 
http://medicine.yale.edu/ycci/oncore/availableservices/datarequests/datarequests.aspx
3.  Recruitment Procedures: 
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a. Describe how potential subjects will be identified. Recruitment will be through advertisements at 
local colleges, in Craigslist, Facebook, YCCI Recruitment database Instagram, Twitter, 
Google ads and other social media platforms, radio ads, newspaper ads, novelties (e.g. 
coasters, matchbooks, etc.) flyers in the community(for example barbershops, hair salons, 
grocery stores in predominately Black communities) bus stops, within buses, word of mouth 
recruitment through community organizations, partnering with community groups, etc.
b.
Describe how potential subjects are contacted. Potential participants can contact the study to 
determine eligibility through phone call, text message, or a website that will direct them to a 
Yale Qualtrics website where interested participants can complete a brief screening 
questionnaire- or may be referred from the TCORs screening protocol.  
c.  
d. Who is recruiting potential subjects? The PI and research staff will recruit potential subjects.
4. Assessment of Current Health Provider Relationship for HIPAA Consideration:
Does the Investigator or any member of the research team have a direct existing clinical relationship with any 
potential subject? 
☐Yes, all subjects
☐Yes, some of the subjects
☒No
If yes, describe the nature of this relationship. Write here
5. Request for waiver of HIPAA authorization: (When requesting a waiver of HIPAA Authorization for either the 
entire study, or for recruitment purposes only.  Note: if you are collecting PHI as part of a phone or email 
screen, you must request a HIPAA waiver for recruitment purposes.)
Choose one: 
☐ For entire study 
☒ For recruitment/screening purposes only
☐ For inclusion of non-English speaking subject if short form is being used and there is no translated HIPAA 
research authorization form available on the University’s HIPAA website at hipaa.yale.edu.
i.
Describe why it would be impracticable to obtain the subject’s authorization for use/disclosure of this 
data: Write here
ii.
If requesting a waiver of signed authorization, describe why it would be impracticable to obtain the 
subject’s signed authorization for use/disclosure of this data: We request a waiver of signed 
authorization only for initial participant recruitment/screening purposes to obtain interested 
participants' phone numbers and/or email for voice and text communication to make initial 
contact with the research team. At the first phone contact with the research team, 
participants will provide verbal consent for the screening process. If participants prefer to 
complete the online screener through the Yale Qualtrics system.
The investigator assures that the protected health information for which a Waiver of Authorization has been 
requested will not be reused or disclosed to any person or entity other than those listed in this application, except 
as required by law, for authorized oversight of this research study, or as specifically approved for use in another 
study by an IRB.
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Researchers are reminded that unauthorized disclosures of PHI to individuals outside of the Yale HIPAA-Covered 
entity must be accounted for in the “accounting for disclosures log”, by subject name, purpose, date, recipients, 
and a description of information provided.  Logs are to be forwarded to the Deputy HIPAA Privacy Officer.
6.
Process of Consent/Assent: Describe the setting and conditions under which consent/assent will be obtained, 
including parental permission or surrogate permission and the steps taken to ensure subjects’ independent 
decision-making. 
After the screening process is complete and the participant is found to be eligible, the RA/PI will 
schedule them for an in-person (remote if necessary) intake. At the intake session, all eligible 
participants will be asked for written consent using the Yale HIC approved combined 
consent/HIPAA form. If the intake is done remotely, consent will be obtained via Redcap or mailed 
signed consent method for consenting will be used. The entire consent form will be reviewed in 
detail with the participant in a private, one-on-one setting at the first intake appointment. If remote, 
this will take place via phone or video conferencing (depending on technological capabilities of 
participant). All risks and potential benefits will be described. Any questions the participant may 
have will be addressed. If the participant wishes, they may take the consent form home and 
consider it further before signing. They may also request to speak to anyone on the research team 
about questions they have or to consult others, including their physician and family members. Once 
the participant has signed the consent, they may withdraw consent at any time. Informed consent 
must be obtained prior to performance of any protocol specific procedures. All participants will 
receive a signed copy of the consent form to retain for their records.
7.
Evaluation of Subject(s) Capacity to Provide Informed Consent/Assent: Indicate how the personnel obtaining 
consent will assess the potential subject’s ability and capacity to consent to the research being proposed. 
We will not be enrolling participants with limited decision-making capacity. We plan to exclude 
individuals with current serious psychiatric or medical illnesses. During the consenting process, the 
research assistant will read and review the consent form with the prospective participant. The 
research assistant will then ask the potential participant various questions about the consent form 
and study protocol to ensure the prospective participant sufficiently understands the study and the 
nature of their consent to participate.
8.
Non-English Speaking Subjects: Explain provisions in place to ensure comprehension for research involving 
non-English speaking subjects. If enrollment of these subjects is anticipated, translated copies of all consent 
materials must be submitted for approval prior to use. 
N/A
As a limited alternative to the above requirement, will you use the short form* for consenting process if you 
unexpectedly encounter a non-English speaking individual interested in study participation and the translation of 
the long form is not possible prior to intended enrollment?  YES ☐  NO ☒
Note* If more than 2 study participants are enrolled using a short form translated into the same language, then 
the full consent form should be translated into that language for use the next time a subject speaking that 
language is to be enrolled.
Several translated short form templates are available on the HRPP website (yale.edu/hrpp) and translated HIPAA 
Research Authorization Forms are available on the HIPAA website (hipaa.yale.edu). If the translation of the short 
form is not available on our website, then the translated short form needs to be submitted to the IRB office for 
approval via modification prior to enrolling the subject.   Please review the guidance and presentation on use of 
the short form available on the HRPP website.
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If using a short form without a translated HIPAA Research Authorization Form, please request a HIPAA waiver in 
the section above. 
9.
Consent Waiver: In certain circumstances, the HIC may grant a waiver of signed consent, or a full waiver 
of consent, depending on the study. If you will request either a waiver of consent, or a waiver of signed consent 
for this study, complete the appropriate section below.  
☒Not Requesting any consent waivers 
☐Requesting a waiver of signed consent:
☐ Recruitment/Screening only (if for recruitment, the questions in the box below will apply to 
recruitment activities only)
☐ Entire Study (Note that an information sheet may be required.)
SECTION IV: PROTECTION OF RESEARCH SUBJECTS
    Confidentiality & Security of Data:
What protected health information (medical information along with the HIPAA identifiers) about subjects will be 
collected and used for the research?  
The information about participants’ health that will be collected in this study includes:

research study records (interviews, assessments, objective measures of smoking behavior, and 
self-reports).

Medical and laboratory records of only those services provided in connection with this study (eg. 
lab tests)

A video recording will be made of the e-cigarette use session. This recording will be 
labeled with an anonymous identifier and not their name.
We will collect names and demographic information. Identifiable information will be collected and 
used to enroll and contact participants. It will only be used for this purpose. This information will be 
stored in locked cabinet apart from the research records. 
1.
How will the research data be collected, recorded and stored? 
Research data will be collected using in-person interviews, assessments, objective measures of 
smoking behavior, and self-reports. All identifiable information (names and demographic information) 
will be stored in a locked file cabinet. All participants will be assigned a study participant ID made up 
of numbers and letters. Subsequently, participants will be identified in the Case Report Forms (CRFs) 
only by that number (e.g., CM24). A list of IDs and the corresponding names will be maintained by 
the Principal Investigator and stored in a locked research cabinet. All other research data (interviews, 
assessments, objective measures of smoking behavior, and self-reports) will not contain identifiable 
information and will be labeled only with the subjects' unique numerical indicator. 
2.
How will the digital data be stored? ☐CD  ☐DVD  ☐Flash Drive  ☐Portable Hard  Drive   ☒Secured Server  
☐Laptop Computer  ☒Desktop Computer  ☐Other
3.
What methods and procedures will be used to safeguard the confidentiality and security of  the identifiable 
study data and the storage media indicated above during and after the subject’s participation in the study? 
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Several steps will be taken to safeguard the confidentiality of subjects and their data. Right to privacy 
for participation in this research will be protected through coding of data and proper storage of 
research records. All research data that is collected will be assigned a study participant number and 
that number will be the only link between participant names/identifying information and the digital 
databases. The names of participants will not be associated with this data and assessments will be 
maintained according to participant study number. A master list connecting participant study numbers 
to participant names will be kept in a locked file cabinet where it can only be accessed by senior level 
project staff. Any information published as a result of the study will be in aggregate and such that it 
will not permit identification of any participant. We are not directly assessing incidents of child abuse 
or elderly abuse. However, if this information is disclosed by a participant or volunteer in the context 
of this research, a report will be made to the Department of Child and Families Services or other 
agency as required by law. Subjects will be informed of this limit to confidentiality as it is stated in the 
informed consent document. All investigators and key personnel have taken the required Yale 
University HIPAA training. Right to privacy for participation in this research will be protected through 
coding of data and proper storage of research records. A list of numbers and the corresponding 
names will be maintained by the Principal Investigator in a locked research cabinet.  Individually 
identifiable health information will be protected in accordance with the Health Insurance Portability 
and Accountability Act of 1996 and by additional protections of substance abuse treatment records 
afforded under Code of Federal Regulations (CFR) Part 2, Subpart E. All research personnel will be 
trained on human subjects' protection and HIPAA procedures.
All portable devices must contain encryption software, per University Policy 5100.  If there is a technical reason a 
device cannot be encrypted please submit an exception request to the Information Security, Policy and Compliance 
Office by clicking on url http://its.yale.edu/egrc or email it.compliance@yale.edu
4.
What will be done with the data when the research is completed? Are there plans to destroy the identifiable 
data? If yes, describe how, by whom and when identifiers will be destroyed. If no, describe how the data and/or 
identifiers will be secured. The data will be stored in a locked room for 7 years after the final data is 
collected. After this point, the Data Manager and Principal Investigator will oversee the process in 
which data is destroyed or de-identified.
5.
If appropriate, has a Certificate of Confidentiality been obtained? A certificate will automatically be applied 
with the federal funding.
SECTION V: POTENTIAL BENEFITS
Potential Benefits: Identify any benefits that may be reasonably expected to result from the research, either to 
the subject(s) or to society at large. (Payment of subjects is not considered a benefit in this context of the risk 
benefit assessment.) 
TCORS Menthol Pilot Study
This study will provide preliminary data to the FDA to understand the reward/appeal of freebase vs. the 
salt form of nicotine when provided in pod e-cigarette devices to adult menthol smokers. This 
preliminary evidence may provide some clues about which form of nicotine (salt vs freebase) may be 
more acceptable to help adult menthol smokers transition to e-cigarettes for harm-reduction.  
K01 Metabolism Study
There are no direct benefits to the participants. We expect that the results of the study will benefit 
science and address critical gaps in e-cigarette research by evaluating the impact of nicotine 
metabolism ratio on pharmacokinetics and subjective effects of menthol in e-cigarettes among African 
Americans who smoke. The outcomes of the project will provide the FDA with new information to 
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further develop the knowledge base in understanding menthol flavor and its impact on nicotine 
dependence. 
         SECTION VI: RESEARCH ALTERNATIVES AND ECONOMIC CONSIDERATIONS
1.
Alternatives: What other alternatives are available to the study subjects outside of the research? 
This is not a treatment study and the alternative is to not participate.  
2.
Payments for Participation (Economic Considerations): Describe any payments that will be made to subjects, 
the amount and schedule of payments, and the conditions for receiving this compensation.
For TCORS Menthol Pilot
We will compensate participants for time spent in this research project.  Participants who complete the 
remote portion of the intake will be paid $30. Participants who complete the remote intake and the 
in-person portion will be paid an additional $20 (for a total of $50).  For those who are ineligible after 
the remote intake will receive $30 via a gift card of their choosing (Amazon, Walmart, etc.).
Participants (n=30) will receive $50 for each of the 3 experimental sessions. Participants will receive a 
$50 completion bonus after completing the third experimental session. For all appointments we will 
compensate participants $10/day for travel to appointments. Participants will receive a $30 gift card or 
cash for their 1 month follow up phone call. Each participant can earn up to $280 for appointments and 
an additional $40 for travel (total $320).  
We will validate parking in the Air Rights parking garage.  We will provide round trip cab transportation 
to appointments if transportation is an issue and the $10 for travel will not be provided.
For K01 Metabolism Study
We will compensate participants for time spent in this research project. Participants will receive $30 for 
intake and assessments and $20 for biochemical measure collection. If ineligible after completing 
intake remotely participants will receive $30 compensation in the form of a gift card of their choosing 
(examples include but are not limited to Amazon, Wal-Mart, Target, Stop & Shop). All other payments 
will be in cash.
Participants (n=85) will receive $200 each for the 2 experimental sessions. Participants will receive $50 
for completing both lab sessions. We will compensate participants $10/day for travel to appointments. 
Each participant can earn up to $500 for appointments and an additional $30 for travel (total $530).  
We will validate parking in the Air Rights parking garage.
3.
Costs for Participation (Economic Considerations): Clearly describe the subject’s costs associated with 
participation in the research, and the interventions or procedures of the study that will be provided at no cost 
to subjects. 
There are no costs for participation.
4.
In Case of Injury: This section is required for any research involving more than minimal risk, and for minimal 
risk research that presents the potential for physical harm (e.g., research involving blood draws).
a.
Will medical treatment be available if research-related injury occurs? Write here
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b.
Where and from whom may treatment be obtained? Write here
c.
Are there any limits to the treatment being provided? Write here
d.
Who will pay for this treatment? Write here
e.
How will the medical treatment be accessed by subjects? Write here
(a-e) If a participant is injured as a direct result of participation in this study, treatment will be provided. 
The participant and/or his or her insurance carrier will be expected to pay the costs of this treatment. 
No additional financial compensation for injury or lost wages is available.  Participants will not waive 
their legal rights by participating in this study.
IMPORTANT REMINDERS
Will this study have a billable service?  Yes ☐ 
 No☒
A billable service is defined as any service rendered to a study subject that, if he/she was not on a study, would 
normally generate a bill from either Yale-New Haven Hospital or Yale Medical Group to the patient or the patient’s 
insurer. The service may or may not be performed by the research staff on your study, but may be provided by 
professionals within either Yale-New Haven Hospital or Yale Medical Group (examples include x-rays, MRIs, CT 
scans, specimens sent to central labs, or specimens sent to pathology). Notes: 1. There is no distinction made 
whether the service is paid for by the subject or their insurance (Standard of Care) or by the study’s funding 
mechanism (Research Sponsored). 2. This generally includes new services or orders placed in EPIC for research 
subjects. 
If answered, “yes”, this study will need to be set up in OnCore, Yale’s clinical research management system, for 
Epic to appropriately route research related charges. Please contact oncore.support@yale.edu
Are there any procedures involved in this protocol that will be performed at YNHH or one of its affiliated entities?  
Yes ☐  No ☒ 
If Yes, please answer questions a through c and note instructions below.  
a. Does your YNHH privilege delineation currently include the specific procedure that you will perform? Yes ☐  No 
☐
b. Will you be using any new equipment or equipment that you have not used in the past for this procedure? Yes 
☐  No ☐
c. Will a novel approach using existing equipment be applied? Yes ☐  No ☐
 
If you answered “no” to question 4a, or "yes" to question 4b or c, please contact the YNHH Department of 
Physician Services (688-2615) for prior approval before commencing with your research protocol.
IMPORTANT REMINDER ABOUT RESEARCH AT YNHH 
Please note that if this protocol includes Yale-New Haven Hospital patients, including patients at the HRU, the 
Principal Investigator and any co-investigators who are physicians or mid-level practitioners (includes PAs, APRNs, 
psychologists and speech pathologists) who may have direct patient contact with patients on YNHH premises 
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must have medical staff appointment and appropriate clinical privileges at YNHH. If you are uncertain whether 
the study personnel meet the criteria, please telephone the Physician Services Department at 203-688-2615. By 
submitting this protocol as a PI, you attest that you and any co-investigator who may have patient contact has a 
medical staff appointment and appropriate clinical privileges at YNHH.
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Helen, Gideon St., Benowitz, Neal L., Ahluwalia, Jasjit S., Tyndale, Rachel F, et al. (2019) ‘Black 
Light Smokers: How Nicotine Intake and Carcinogen Exposure Differ Across Various 
Biobehavioral Factors’. Journal of the National Medical Association, pp. 1–12. [online] Available 
from: https://doi.org/10.1016/j.jnma.2019.04.004
70 
Clausius, Rebecca L., Krebill, Ron, Mayo, Matthew S., Bronars, Carrie, et al. (2012) ‘Evaluation 
of the Brief Questionnaire of Smoking Urges in Black Light Smokers’. Nicotine & Tobacco 
Research, 14(9), pp. 1110–1114.
71 
NACDA (2006) ‘Guidelines for Administration of Drugs to Human Subjects.’
 
 
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ICF_001.pdf: 
ClinicalTrials.gov ID: NCT04262817 
Title: The Interaction of Flavor with Nicotine Form in Adult Smokers 
Date: 8/3/2021 
Document: ICF 


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COMPOUND AUTHORIZATION AND CONSENT FOR PARTICIPATION IN A 
RESEARCH PROJECT
200 FR. 1 (2016-2) 
YALE UNIVERSITY
YALE UNIVERSITY SCHOOL OF MEDICINE
Study Title: The interaction of flavor with nicotine form in adult smokers 
Principal Investigator: Asti Jackson, Ph.D.
Funding Source: NIDA
Research Study Summary:
We are asking you to join a research study.
The purpose of this research study is to investigate the interaction of flavor and nicotine form 
in adult smokers
Study procedures will include an intake appointment, 3 laboratory sessions and a 1 month 
follow up phone call
4 visits are required.
These visits will take approximately 2 hours per visit (8 hours total). 
There are some risks from participating in this study which include administering nicotine, 
using an e-cigarette such as mouth/throat irritation, dry cough, addiction/ dependence, 
respiratory flow resistance, flavors, propylene glycol/ vegetable glycerin, limits to 
confidentiality, nicotine withdrawal, breath, urine and saliva collection, and rating scales and 
assessments
This study may have no benefits to you.
Taking part in this study is your choice. You can choose to take part, or you can choose not 
to take part in this study.  You can also change your mind at any time.  Whatever choice you 
make, you will not lose access to your medical care or give up any legal rights or benefits. 
If you are interested in learning more about the study, please continue reading, or have 
someone read to you, the rest of this document. Take as much time as you need before you 
make your decision. Ask the study staff questions about anything you do not understand. 
Once you understand the study, we will ask you if you wish to participate; if so, you will 
have to sign this form.
Invitation to Participate and Description of Project
You are invited to take part in a research pilot study designed to study the effects of flavors on 
different forms of nicotine (freebase, salts) commonly found in e-liquids when administered in e-
cigarettes. Nicotine in its freebase form does not have a charge and nicotine in its salt form has a 
charge on the molecular level. You have been asked to take part in this study because you at least 
21 years old, report regular menthol cigarette/cigar/little cigar smoking, and have experience 
with e-cigarettes. If you take part in this research study, you will be asked to complete 3 lab 
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sessions in which you will be asked to use an e-cigarette we will provide to you and to complete 
questionnaires. We plan to recruit 30 participants into this pilot study.
In order to decide whether or not you wish to be a part of this research study, you should know 
enough about its risks and benefits to make an informed decision.  This consent form gives you 
detailed information about the research study, which a member of the research team will discuss 
with you.  This discussion should go over all aspects of this research: its purpose, the procedures 
that will be performed, any risks of the procedures, and possible benefits. Once you understand 
the study, you will be asked if you wish to participate; if so, you will be asked to sign this form.
This study is not designed to help you quit smoking. If you do wish to quit smoking, please 
inform the research assistant and he/she will give you referrals regarding treatment options. 
A description of this clinical trial will be available on http://www.ClinicalTrials.gov, as required 
by U.S. Law. This Web site will not include information that can identify you. At most, the Web 
site will include a summary of the results. You can search this Web site at any time.
Description of Procedures
If you agree to take part in this study, you will be asked to complete the following study related 
activities: 
COVID procedures: We care about your safety as a research participant. Because participating in 
this study may involve travel outside of your home and exposure to others during a pandemic, 
we will discuss ways to minimize risks related to COVID-19. Before you decide whether to 
participate in this study, talk to your study doctor or the researcher about anything you do not 
understand or any concerns you may have. If you are eligible for the study, we will ask that you 
fill out a COVID symptom online questionnaire daily. This questionnaire will be sent to you via 
an online link to your cell phone or email (depending on your preference). Depending on 
symptoms, we may need to call you to follow up on your symptoms. You will not be allowed to 
attend in-person visits until your COVID symptom questionnaires are completed. If you are not 
able to fill out the online questionnaire, study staff can administer the questionnaire via phone.
 
Additionally, at all in-person appointments, participants will be asked to wear masks and study 
staff will wear masks and gloves. If you do not have a mask, one will be provided to you by 
study staff. Further safety information for the sessions is described below. During in-person 
appointments, you will again be asked about COVID symptoms and a temperature check will be 
conducted. Participants who report symptoms or have a temperature of >100 will be asked to 
reschedule their visit and instructed to immediately contact their primary health care provide or 
call the Campus COVID Resource line (203-432-6604).
Intake Appointment: For your and the research team’s health and safety, you can participate in 
much of the intake portion remotely via phone call or videoconferencing. During this 
appointment, you will provide personal information, medical history, psychological history and 
your history and current use of nicotine and tobacco products. Information will be collected both 
by you filling out questionnaires via a website and the researcher administering questionnaires. 
The researcher will be on the phone and/or videoconference with you for the entirety of this 
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collection period. It should take approximately 1.5  hours to complete all parts of the remote 
intake. 
If eligible following the remote portion of the visit, you will be asked to come in to our research 
site at One Long Wharf Drive or Connecticut Mental Health Center in New Haven for a short 
visit in which we collect some physiological measures. We will collect a breath carbon 
monoxide (CO) sample, a pregnancy test and a urine sample to detect cotinine (a byproduct of 
nicotine) and to verify that you are not currently using other drugs. Both CO and cotinine 
samples will help us understand more about your current use of nicotine products. Pregnant 
females will not be allowed to participate.  If you test positive for any drugs aside from 
marijuana at the in-person intake appointment, you will not be paid for the visit and will have the 
opportunity to reschedule this appointment one time. Additionally, we will collect blood pressure 
and heart rate. We well also collect pulse oximetry, which measures how well oxygen is being 
sent through the body. This is measured using a clip-like device on your finger and is quick and 
painless. It should take approximately thirty minutes to complete this in-person visit. We will 
also measure your lung function (lung spirometry) where you are asked to blow into a small 
handheld device.
Training session: The first 10-15 minutes of Lab Session 1 will be used to familiarize you with
the e-cigarette we will be using. You will also be shown the rating scales to make sure you
understand how to complete them. During this practice, an e-cigarette without nicotine or any
flavors will be used.
Lab Sessions (3 total): All laboratory sessions will be conducted on weekdays. These sessions 
will be conducted at the J.B. Pierce Laboratory at 290 Congress Ave in New Haven, CT. There 
will be a minimum of 24 hours between each session and the first two sessions will last for 
approximately two hour and a half hours. We will try to complete  laboratory sessions within a 2-
week period, depending on your schedule and availability of the lab. We will ask you to stop 
using all tobacco products (e.g., cigarettes, e-cigarettes) and marijuana for 12 hours prior to each 
laboratory session. Abstinence will be confirmed using breath CO levels  ≤10 ppm and saliva 
samples will be used to determine cotinine (a by-product of nicotine) and nicotine levels. If 
either your breath CO level or saliva sample indicate that you have used a tobacco product, your 
lab session may be canceled and rescheduled for a different day.
For your safety, all lab sessions take place in a private environmentally controlled room that 
utilizes continuous floor-to-ceiling airflow to limit exposure. The rooms have plexiglass dividers 
to adhere to social distancing guidelines when in-person interactions are necessary. Other times, 
instructions and communication will occur remotely using a 2-way audio system. Hand sanitizer 
will be available and you will be asked to wear gloves for the duration of the lab session. 
You will be randomly assigned to receive either free-base nicotine e-liquid or the nicotine-salt e-
liquid during each of the two lab sessions. During the first two lab sessions you will be asked to 
inhale by taking a 2-second-long puff from an e-cigarette that will be provided to you two times; 
each puff will be separated by a 1 hour rest period. The e-cigarette will contain nicotine (at a 
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dose of 36mg/ml) and a different flavor for each puff (2 per session). If you feel any 
uncomfortable side effects (e.g., nausea, vomiting), you can discontinue the puffat any time. We 
will monitor rises in nicotine/cotinine levels using saliva samples obtained prior to each puff and 
5, 15, 30, 45, and 55 minutes after each puff. We will also monitor nicotine effects using self-
report questionnaires. Furthermore, we will monitor heart rate and blood pressure. Each 
laboratory session will last approximately two and a half hours. Prior to session 2, female 
enrollees will be verbally asked about their pregnancy risk (such as unprotected sex or a missed 
menstrual period) and receive a pregnancy test.
During lab session 3, you will be offered all the four e-cigarettes from the 2 previous lab 
sessions.  You will be able to choose to freely vape any preferred combination of these four e-
cigarettes for a one-hour period. For example, you could choose to use just one or use a 
combination of all four. Each laboratory session will be recorded on video.  The purpose of this 
is to ensure that the lab sessions are conducted correctly.
One-month follow up: One month after completion of the third session, you will have a one-
month follow up phone call. During this phone call we assess any health symptoms that may be 
related to e-cigarette use.
For any in person appointments, we ask that you do not bring any weapons to any appointments 
you have with us. We also ask that you do not drink any alcoholic beverages for 12 hours prior to 
your appointment time.  If we suspect that you may be intoxicated, we may do a breathalyzer, 
ask you to remain in the clinic until it is safe to leave, and may reschedule your appointment.
Risks and Inconveniences
The potential risks in this study are related to 1) Use of e-cigarette 2) Nicotine Withdrawal 3)
Nicotine administration; 4) Flavor administration, 5) Urine and saliva collections, 6) Tobacco 
use Drug use 7) Limits to Confidentiality and 8) Rating scales and assessments.
1) Use of e-cigarette: You were asked to participate because you have had some experience with
e-cigarettes, therefore reducing the risk to experience any kind of adverse reaction to an e-
cigarette. The e-cigarette delivers nicotine in much the same way that a regular cigarette does. It 
is easier to use nicotine in these devices and you could use more nicotine than anticipated using. 
However, in this study you will only be allowed to use a set amount of nicotine and the amount 
of nicotine you will use will not be greater than what you would be exposed to through a regular 
cigarette.  As a current cigarette/cigar/little cigar smoker, you are already self-administering 
nicotine (as indicated by your CO/cotinine levels at Intake) and already have experience with 
tobacco products with and without various flavors. There may be a risk of e-cigarette 
dependence. However, this will not likely happen directly from the planned limited supervised e-
cigarette exposures in this study. If you have a neutral or positive e-cigarette experience in this 
study, it could lead to increased use after the study is completed. Additionally, in rare cases there 
have been reports of e-cigarettes exploding and causing serious injury to people. Evidence 
suggests that these explosions are battery related. To avoid a vape related explosion the research 
staff has implemented the following Food and Drug Administration recommendations: 1) The 
research staff will keep loose batteries in a case to prevent contact with metal objects, 2) The 
research staff will always charge the battery with the charger that the e-cigarette came with 3) 
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The e-cigarettes will not be charged overnight or left unattended 4) The research staff will 
replace the e-cigarette battery if it becomes wet or damaged. Furthermore, acute exposure to e-
cigarette aerosol may result in mouth and throat irritation, dry cough at initial use and typical 
sensory effects of menthol in the mouth and throat. 
The lab sessions will be conducted by trained research staff sensitive to tobacco users and trained 
to monitor any potential adverse effects. You should not experience any of these symptoms 
during the study since we will be exposing you to controlled low levels of nicotine but if you feel 
uncomfortable at any time please tell us and we will stop the study procedures.  After the last 
session you will be offered referral sources to quit tobacco use if you are interested. 
Information Related to Cases of Severe Pulmonary Illness and Vaping: There have been recent 
reported cases of severe pulmonary illness linked to “vaping” or e-cigarette use. These cases 
included symptoms such as coughing, shortness of breath, chest pain, fever, fatigue, nausea, 
vomiting, diarrhea, and/or abdominal pain. Some patients reported symptoms to have occurred 
over a few days and some reported to have occurred over a few weeks. Vaping-related disorders 
have ranged from mild to severe with hospitalization, intensive care with breathing machines and 
in some cases death. In most cases, but not all, people experiencing these symptoms were using 
cannabidiol (CBD) and marijuana (THC) e-liquids, and/or using e-cigarette devices and e-liquids 
that were mixed at home or purchased off market (such as purchasing an e-liquid or device on 
the street, not from a licensed retailer). Laboratory data show that Vitamin E Acetate, an additive 
in some THC-containing e-cigarette or vaping products is strongly linked to EVALI.
The Center for Disease Control (www.cdc.gov) has issued the following information on vaping: 

CDC and FDA recommend that people not use THC-containing e-cigarette, or vaping, 
products, particularly from informal sources like friends, family, or in-person or online 
dealers.

Vitamin E acetate should not be added to any e-cigarette, or vaping, products. 
Additionally, people should not add any other substances not intended by the 
manufacturer to products, including products purchased through retail establishments.

Adults using nicotine-containing e-cigarette, or vaping, products as an alternative to 
cigarettes should not go back to smoking; they should weigh all available information 
and consider using FDA-approved smoking cessation medications. If they choose to use 
e-cigarettes as an alternative to cigarettes, they should completely switch from cigarettes 
to e-cigarettes and not partake in an extended period of dual use of both products that 
delays quitting smoking completely. They should contact their healthcare professional if 
they need help quitting tobacco products, including e-cigarettes, as well as if they have 
concerns about EVALI.

E-cigarette, or vaping, products (nicotine- or THC-containing) should never be used by 
youths, young adults, or women who are pregnant.

Adults who do not currently use tobacco products should not start using e-cigarette, or 
vaping, products.

THC use has been associated with a wide range of health effects, particularly with 
prolonged frequent use. The best way to avoid potentially harmful effects is to not use 
THC-containing e-cigarette, or vaping, products.
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
Persons engaging in ongoing cannabis use that leads to significant impairment or distress 
should seek evidence-based treatment by a healthcare professional.
Although there is much research devoted to EVALI, the exact cause of this lung injury remains 
unknown. Therefore, we ask you to abstain from using tobacco and THC-containing products 
from unknown sources, as they may not comply with standards set by Good Manufacturing 
Practices and could contain contaminants. The symptoms of EVALI can include cough, 
shortness of breath, chest pain, nausea, vomiting, stomach pain, diarrhea, fever, chills, or weight 
loss. If you feel sick or experience any of these symptoms, get care and contact the study team as 
soon as possible.
The e-cigarettes and e-liquid pods that we will use in the current study are purchased only from a 
licensed retailer and do not contain CBD, THC, or Vitamin E Acetate. At this time, we don’t 
know what the risks associated with the use of the e-cigarettes and e-liquids, flavors, etc. that we 
use in this study are, and who might develop symptoms. The pods we are giving participants 
contain nicotine, solvents, and flavorings. We will ask participants to only use the e-cigarette 
pods provided and inform them not attempt to hack or modify the e-cigarette device in any way.
Participants will be asked not to participate if they have known allergies to propylene glycol (a 
constituent in e-liquids), known allergies to any e-liquids and/or nut allergies (as our e-liquids 
are made in a facility in which they could have come in contact with nuts). All participants will 
report on their general health at intake to make sure you are healthy prior to participating and 
will continue to monitor your health closely during the study. If participants experience any 
symptoms (such as abdominal pain, nausea, vomiting, diarrhea, cough, shortness of breath, chest 
pain) or have other concerns, we will instruct them to let us know and let their doctor know right 
away. They will be instructed to go to the emergency room right away if their symptoms increase 
rapidly. It is possible that the hospital may report cases of illness after using e-cigarettes to the 
State Health Department and the CDC. The report will contain the name and address of the 
person who is ill.
2) Nicotine withdrawal: During the abstinence period prior to the lab sessions, you may 
experience symptoms of nicotine withdrawal, such as craving cigarettes, mild anxiety, 
restlessness, irritability, difficulty concentrating, loss of energy and excessive hunger. These are 
normal symptoms that people experience when they stop tobacco use and they can be 
uncomfortable, but they are not life threatening.
3) Nicotine administration: Common side effects of nicotine include nausea, vomiting,
heartburn, and elevated heart rate and blood pressure. Since nicotine intake during pregnancy 
may be associated with increased risk for spontaneous abortion, increased perinatal mortality and 
with low infant birth weights, we will exclude women who are pregnant or nursing from this 
study. Toxic doses of nicotine may cause abdominal pain, hyper salivation, diarrhea, dizziness, 
confusion, hearing and vision problems, fainting, seizures, hypotension (low blood pressure), 
irregular pulse, and death. However, these toxic effects occur at doses 40 to 50 times higher than 
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those that will be used in this study. Also, since you are a tobacco user, it is not likely that you 
will experience side effects. Again, if you experience any side effects or feel uncomfortable, you 
can stop the session at any point.
4) Use of flavors: At this time, there is little known about the short and long-term effects of 
inhaling flavorants. There may be unforeseen risks (such as allergic reactions). We will be using 
e-liquids that are freely available for purchase and the flavor doses will be what is available in 
these e-liquids. Some research has indicated that certain chemicals used in some flavored e-
liquids may be harmful in large doses.  However, if you experience any side effects, you can stop 
the session at any point. Research staff will monitor e-cigarette use during the lab session. If you 
feel any discomfort or need to stop for any reason, please let the researcher know.
5) Use of propylene glycol/ vegetable glycerin: At this time, there are no immediate known risks 
associated with the use of propylene glycol/ vegetable glycerin we may use in this study. It is 
important to note that there may be unforeseen risks (such as allergic reactions). We will be 
using e-liquids that are freely available for purchase and the propylene glycol/vegetable glycerin 
doses will be what is available in these e-liquids. Some research has indicated that in large doses 
propylene glycol and vegetable glycerin can be harmful.  However, if you experience any side 
effects, you can stop the session at any point. Research staff will monitor e-cigarette use during 
the lab session. If you feel any discomfort or need to stop for any reason, please let the researcher 
know
5) Urine and saliva collections: Urine collections will be done at your intake appointment to 
measure the amount of cotinine in your body. Saliva samples will be collected during
the lab sessions to determine nicotine and cotinine levels. This is done by chewing on a cotton 
salivette (swab) around in your mouth for thirty seconds. Urine and saliva sample collection is
not risky.
6) Tobacco Use and Drug use: You will be asked about current and past use of illicit "street" 
drugs at the intake to rule out substance abuse. If you are currently using drugs, you may not be 
eligible to participate. If at any time during your participation you report you want to hurt 
yourself or hurt anyone else, we will immediately direct you to appropriate authorities to ensure 
your safety.
7) Limits to confidentiality: We do not reveal any personal information collected as part of the 
research procedures, including your reported tobacco use and other substance use history. 
However, there is always the possibility that if you participate in the study, others, including 
friends, may become aware of your tobacco use status. If you do not feel comfortable with this, 
you should not participate in the project.
8) Rating scales and assessments: These are all noninvasive and should add no risk. The major
disadvantages are the time taken to complete them, and possible breach of confidentiality. You 
can choose not to answer any questions that may make you feel uncomfortable.
9) COVID, Smoking and Vaping: “Although scientific evidence is incomplete, some studies 
have suggested that use of e-cigarettes may add to your risk of getting COVID -19 and may 
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contribute to the severity of illness if you do get the virus.  Additionally, smokers and e-cigarette 
users have to take their face masks off when they smoke or vape. So even between puffs, you 
may be unknowingly infected with the coronavirus, you might exhale contagious droplets and 
aerosols into the air, which could be inhaled by others nearby. Secondhand cigarette smoke is 
known to cause health problems, and although there isn’t yet scientific proof that it can spread 
the coronavirus and cause COVID-19, it may be possible. Smoking or vaping inside is even 
riskier. In a closed environment, infectious droplets and particles can build up in the air, putting 
others in the room at risk if there’s no ventilation
There may be additional risks related to this study that are not yet known. You will be told of any 
new findings that may affect your decision to participate in the research.
Benefits
In this study we monitor for the symptoms of EVALI, which is a direct benefit for those who 
may be at risk for developing this condition. There are no other direct benefits of this study.  We 
expect that the results of the study, however, will benefit science and others through increasing 
our knowledge of how cigarette flavors alter smoking behavior.
Treatment Alternatives/Alternatives
This is not a treatment study. If you are currently interested in quitting tobacco product use, we 
will provide you with a treatment referral and you will not be eligible to participate in this study.
Participant Obligation
You should be aware that as a participant in a research study, you have certain requirements and 
responsibilities. Your requirements/responsibilities during the study are to:
1. Not use any illegal drugs during your participation in the study. 
2. Report all changes in your physical or mental condition during the course of the study to the 
study staff whether or not they are related to study procedures.
3. If you need to have any emergency medical procedures while you are participating in this 
study, please let the research staff know immediately. 
4.  Tell the research staff immediately if you have:

A side effect

An injury

Any symptom or complaint
If you have questions, an injury or any symptom or complaint, you should contact the Principal 
Investigator for this study, Dr. Asti Jackson (203)974-7598 or Dr. Krishnan-Sarin (203)974-
7595.
Economic Considerations
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There will be no charge to you or your insurance company for study-related procedures or study 
visits during your participation in this study. You will be compensated up to $320 for completing 
the study. If you complete the remote portion of the intake will be paid $30. If you complete the 
remote intake and the in-person portion you will be paid an additional $20 (for a total of $50).  If 
you are ineligible after the remote intake you will receive $30 via a gift card of your choosing 
(Amazon, Walmart, etc.).You will receive $50 for each of the 3 laboratory sessions, a $50 
completion bonus after the third laboratory session and a $30 gift card or cash for completion of 
follow up phone call.  You will be compensated $10/day for travel to appointments (up to a total 
of $40) and we will also validate parking in the Air Rights parking garage.
According to the rules of the Internal Revenue Service (IRS), payments that are made to you as a 
result of your participation in a study may be considered taxable income.
Confidentiality and Privacy
Any identifiable information that is obtained in connection with this study will remain 
confidential and will be disclosed only with your permission or as required by U.S. or State 
law. If you tell us that you are planning to hurt yourself or someone else or know of a child or 
elderly person being abused, we will notify the appropriate authorities.  When the results of the 
research are published or discussed in conferences, no information will be included that would 
reveal your identity unless your specific consent for this activity is obtained.
We understand that information about you obtained in connection with your health is personal, 
and we are committed to protecting the privacy of that information.  If you decide to be in this 
study, the researcher will get information that identifies you and your personal health 
information.  This may include information that might directly identify you, such as your name 
and demographic information. This information will be de-identified at the earliest reasonable 
time after we receive it, meaning we will replace your identifying information with a code that 
does not directly identify you. The principal investigator will keep a link that identifies you to 
your coded information, and this link will be kept secure and available only to the PI or 
selected members of the research team. Any information that can identify you will remain 
confidential.  The research team will only give this coded information to others to carry out 
this research study. The link to your personal information will be kept for 7 years after the 
conclusion of the study, after which time the link will be destroyed and the data will become 
anonymous. The data will be kept in this anonymous form indefinitely.  
We will also share information about you with other researchers for future studies but
we will not use your name or any other identifiers. We will not ask you for any
additional permissions.
Who will receive my health information?
Your study information may be shared with the following people or groups:
The U.S. Department of Health and Human Services (DHHS) agencies
The funding agency (NIDA).
The institutional review board at Yale University that approved this study and any 
other committees responsible for overseeing the research.
Government health agencies (such as the Food and Drug Administration) in the US
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Dr. Asti Jackson, Ph.D., Principal Investigator, and her research team 
conducting the study.
Health care providers who provide services to you in connection with this 
study.
Laboratories and other individuals and organizations that analyze your health 
information in connection with this study, according to the study plan.
Co-Investigators and other investigators 
Study Coordinator and Members of the Research Team 
Data and Safety Monitoring Boards and others authorized to monitor the 
conduct of the Study 
What information will be collected about you as part of this research?
The information about your health that will be collected in this study includes:
research study records (interviews, assessments, objective measures of smoking behavior, 
and self-reports).
Medical and laboratory records of only those services provided in connection with this 
study (eg. lab tests)
A video recording will be made of your e-cigarette use session. This recording will 
be labeled with an anonymous identifier and not your name.
By signing this form, you authorize the use and/or disclosure of the information described above 
for this research study.  The purpose for the uses and disclosures you are authorizing is to ensure 
that the information relating to this research is available to all parties who may need it for 
research purposes.
Will my authorization ever expire?
This authorization does not have an expiration date. The study team may need to correct or 
provide missing information about you even after your study participation is over. The review 
of your study health records (described above) may also take place after the study is over.
May I take back my authorization?
You have the right to take back (revoke) your authorization at any time by writing 
to: Dr. Asti Jackson 34 Park Street, Rm. S-212, New Haven, CT, 06519.
If you revoke your authorization, the study team will not collect any new health information 
about you and your participation in this study will be discontinued. However, the research 
team can continue to use information that has already been collected.
Is there anything the research team is legally required to report?
Yes, we are legally required to report disclose of any instances of abuse of a child or 
elderly person, or if you report an intent to harm yourself or others to the state department 
of children and families.
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We are granted a Certificate of Confidentiality (CoC) from the National Institutes of Health. 
The CoC is issued to protect the investigators on this study from being forced to tell people 
that are not connected with this study about your participation in this study, even under a 
subpoena. The protection offered by the CoC does not stop us from voluntarily reporting 
information about suspected or known sexual, physical, or other abuse of a child or older 
person, or a participants’s threats of violence to self or others. If any member of the research 
team is given such information, he or she will make a report to the appropriate authorities. 
Even when a CoC is in place, you must still continue to actively protect your own privacy. If 
you voluntarily give your written consent to anyone, or share/discuss with anyone information 
about your participation in the research, then we may not use the CoC to withhold this 
information.
If you sign this consent form, you are giving permission for the use and disclosure of your 
health information for purposes of this research study. You do not have to give this 
permission. However, if you do not, you will not be able to take part in the study.
All health care providers subject to HIPAA (Health Insurance Portability and Accountability 
Act) are required to protect the privacy of your information.  The research staff at the Yale 
School of Medicine and the Connecticut Mental Health Center are required to comply with 
HIPAA and to ensure the confidentiality of your information. Some of the individuals or 
agencies listed above may not be subject to HIPAA and therefore may not be required to 
provide the same type of confidentiality protection. They could use or disclose your information 
in ways not mentioned in this form.  However, to better protect your health information, 
agreements are in place with these individuals and/or companies that require that they keep your 
information confidential.
You have the right to review and copy your health information in your medical record in 
accordance with institutional medical records policies.  However, by deciding to take part in a 
single or double blinded treatment study and sign this permission form, you will not be allowed 
to look at or copy your study related information until after the research is completed.  
In Case of Injury
If you are injured because of your participation in this study, treatment will be provided. You 
or your insurance carrier will be expected to pay the costs of this treatment. No additional 
financial compensation for injury or lost wages is available. You do not give up any of your 
legal rights by signing this consent form.
Voluntary Participation and Withdrawal
Participating in this study is voluntary. You are free to choose not to take part in this study. 
Refusing to participate will involve no penalty or loss of benefits to which you are otherwise 
entitled (such as your health care outside the study, the payment for your health care, and your 
health care benefits). However, you will not be able to enroll in this research study and will 
not receive study procedures as a study participant if you do not allow use of your information 
as part of this study.
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Withdrawing from the Study:
If you do become a participant, you are free to stop and withdraw from this study at any time 
during its course.
To withdraw from the study, you can call a member of the research team at any time and tell 
them that you no longer want to take part. This will cancel any future appointments.
The researchers may withdraw you from participating in the research if necessary. The study 
team may decide to take you out of the study without your agreement if:

You do not follow the directions of the study team;

The study team decides that the study is not in your best interest;

You become pregnant, intend to become pregnant or are nursing a child during this 
study.
Withdrawing from the study will involve no penalty or loss of benefits to which you are 
otherwise entitled. It will not harm your relationship with your own doctors or with Yale 
University or the Connecticut Mental Health Center.
When you withdraw from the study, no new health information identifying you will be gathered 
after that date. Information that has already been gathered may still be used and given to others 
until the end of the research study, as necessary to insure the integrity of the study and/or study 
oversight.
If you withdraw from the study, biological samples (for example, saliva samples) and videos 
that have been collected from you can be withdrawn if they have not yet been analyzed or 
destroyed. If you want your samples withdrawn, you must tell the study team before or at the 
time you leave the study.
Questions
We have used some technical terms in this form. Please feel free to ask about anything you 
don't understand and to consider this research and the consent form carefully – as long as you 
feel is necessary – before you make a decision.
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Authorization and Permission:
 
I have read (or someone has read to me) this form and have decided to participate in the project 
described above.  Its general purposes, the particulars of my involvement and possible hazards 
and inconveniences have been explained to my satisfaction.  My signature also indicates that I 
have received a copy of this consent form.
Name of Participant: _____________________________
            
Signature: ___________________________________
Date: ______________________________________
___________________________________________
___________________
Signature of Principal Investigator
Date
                                      or
___________________________________________
___________________
Signature of Person Obtaining Consent
Date
If you have further questions about this project or if you have a research-related problem, you 
may contact the Principal Investigator, Asti Jackson, PhD, at (203)974-7598. If you
would like to talk with someone other than the researchers to discuss problems, concerns, and
questions you may have concerning this research, or to discuss your rights as a research 
participant,
you may contact the Yale Human Investigation Committee at (203) 785-4688. If after you have
signed this form you have any questions about your privacy rights, please contact the Yale
Privacy Officer at (203)436-3650.
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