About this trial
The overarching goal of this research is to determine the most effective approach for helping dual users of cigarettes and electronic nicotine delivery systems (ENDS) quit smoking. 500 participants will be enrolled and can expect to be on study for 12 months.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Able to read and communicate in English
Willing to set a quit date to quit smoking cigarettes in the next 30 days
Willing and medically able to use varenicline and nicotine patches
Smoking ≥ 5 cigarettes per day for the past 6 months
Disqualifiers
Currently in treatment for psychosis or bipolar disorder
If they are currently taking bupropion for non-smoking cessation reasons (e.g., Wellbutrin for depression)
Currently pregnant or breastfeeding. If a participant becomes pregnant while in the study, they will be allowed to continue in the study but will no longer receive study medications. They will also be asked to return any unused study medications.
Trial design
Factorial
Treatments tested in this trial
Varenicline
Drug0.5 mg pill once a day for the first 3 days and then increase to a 0.5 mg pill twice a day (at least 8 hours apart) for 4 days prior to the TQD. On the 8th day (the TQD), participants will increase to their target maintenance dose of a 1 mg pill twice daily
Nicotine patch
DrugFollowing package inserts starting on the TQD, participants who smoke \>10 cigarettes per day at baseline will be given 8 weeks of 21 mg nicotine patches, followed by 2 weeks of 14 mg patches, and 2 weeks of 7 mg patches. Participants who smoke ≤10 cigarettes per day at baseline will be given 10 weeks of 14 mg nicotine patches followed by 2 weeks of 7 mg patches.
Dual Focused Cessation Counseling
BehavioralDual Focused Cessation Counseling will focus on quitting both smoking and vaping. Specifically, participants will be instructed to change smoking and vaping patterns (e.g., not smoking or vaping in specific places such as the car or at specific times of day) prior to quitting and to practice cessation coping strategies (e.g., distraction techniques, getting social support).
Smoking Focused Cessation Counseling
BehavioralSmoking Focused Cessation Counseling will focus on quitting smoking and using ENDS as a harm reduction strategy (i.e., using ENDS as a substitute for cigarettes).
Counseling Intensity: 1 Session
Other interventionParticipants assigned to one session will complete a single, 15-20 minute, session at Visit 2 (1 week pre-TQD).
Counseling Intensity: 4 Sessions
Other interventionParticipants assigned to intensive counseling will have four, 15-20-minute sessions.
Treatment groups
8
Treatment groupsSee each treatment group below.
Trial outcomes
Primary outcomes
52-week biochemically confirmed 7-day point-prevalence abstinence from cigarettes
52-week biochemically confirmed (anabasine\<2 ng/ml) 7-day point-prevalence abstinence from cigarettes
Secondary outcomes
26-week biochemically confirmed 7-day point-prevalence abstinence from cigarettes
26-week biochemically confirmed (anabasine\<2 ng/ml) 7-day point-prevalence abstinence from cigarettes
7-day point-prevalence abstinence from smoking and vaping at Weeks 26 and 52 post-TQD
Biochemically confirmed with saliva cotinine \<30 ng/mL
Other outcomes
Number of Participants Achieving Initial Smoking Abstinence
Measured by self-reported 24-hours of cigarette abstinence within the first 2 weeks of the target quit day
12-week biochemically confirmed 7-day point-prevalence abstinence from cigarettes
12-week biochemically confirmed (anabasine\<2 ng/ml) 7-day point-prevalence abstinence from cigarettes
7-day point-prevalence abstinence from smoking and vaping at Week 12
Biochemically confirmed with saliva cotinine \<30 ng/mL
Number of Participants Achieving Initial Abstinence from Smoking and Vaping
Measured by self-reported 24-hours of cigarette and ENDS abstinence within the first 2 weeks of the target quit day
Sponsors and contacts
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University of Wisconsin, Madison
Lead sponsor
National Cancer Institute (NCI)
Collaborator