- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03262662
EVarQuit: Extended Pre-quit Varenicline to Assist in Quitting Smoking (EVarQuit)
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Actual)
Phase
- Phase 3
Contacts and Locations
Study Locations
-
-
New York
-
Buffalo, New York, United States, 14260
- State University of New York at Buffalo
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Smoking at least 10 cigarettes per day (CPD) for the past 6 months and expired-air carbon monoxide (CO) >7 at intake. NOTE: To reduce exclusion of Black participants, the CPD criterion was reduced to 5 and the carbon monoxide criterion was eliminated in November, 2019.
- At least moderately motivated to quit smoking and intention to make a quit attempt with varenicline 1 month after treatment begins.
- Planning to remain in western New York (NY) during the study period
- Willing to use varenicline and to refrain from other cessation treatments and tobacco products during the study period.
- English speaker
- To be intent-to-treat (ITT), the participant must complete Lab Visit 1 and meet minimal completion rate for real-world (EMA) assessments.
Exclusion Criteria:
- Use of other tobacco products, including e-cigarettes, in past 7 days
- Use of smoking cessation medication, including nicotine replacement therapy, in the past 14 days
- Prior allergy/hypersensitivity to varenicline
- Pregnant or breast-feeding
Substance use:
- Alcohol: AUDIT score > 15 at intake, suggestive of alcohol dependence and warranting treatment; for those with scores between 8 and 15, the investigators will advise reducing drinking).
- Medical treatment for substance use (SU) in past 3 months, including Suboxone (buprenorphine) and methadone (at phone screen)
Using a combination of the National Institute on Drug Abuse (NIDA) modified ASSIST (4-26 = moderate risk; 27+ = high risk) and urine toxicology screen (both at intake):
- Cannabis: ASSIST=27+ (tox screen not used)
- Cocaine: ASSIST=7+ OR positive tox screen
- Methamphetamine: ASSIST=7+ OR positive tox screen
- Inhalants, hallucinogens, sedatives, or sleeping pills: ASSIST score = 7+
- Prescription stimulants: With prescription, ASSIST 27+; Without prescription, ASSIST 7+
- Opioids: With prescription, ASSIST 27+ (note ineligible if prescription is for buprenorphine or methadone); Without prescription, ASSIST 7+ OR positive tox screen
(Note: ASSIST 4+ modified to 7+ in 2018 to avoid excluding people with past SU problems. clinicaltrials.gov edited 12/18/18)
Psychiatric:
- Antipsychotic medications
- Lifetime history of schizophrenia or bipolar disorder
- Evidence of current major depression (per Patient Health Questionnaire (PHQ-9) at intake
- Past 10 years suicidal ideation (SI) / behavior. At intake, all of the following are exclusionary on the baseline Columbia-Suicide Severity Rating Scale (Posner et al., 2008): SI without intent (C-SSRS #1, #2, or #3), if any intensity rating (Frequency, Duration, Controllability, Deterrents, or Reasons for Ideation) is > 2; SI with intent (C-SSRS #4, or #5), regardless of intensity ratings; Suicidal Behavior (any suicide attempt, interrupted attempt, aborted attempt, or suicide preparatory acts or behavior on the C-SSRS).
- Any medical condition, illness, disorder or concomitant medication that compromises participant safety or treatment, as determined by the Principal Investigator and/or Study Physician.
- Inability to provide informed consent or complete any of the study tasks as determined by the Principal Investigator and/or Study Physician.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Extended Run-In
** 4 weeks of varenicline prior to the target quit date (TQD) ** + 11 weeks of post-TQD varenicline Standard varenicline dosing titration in initial week of therapy (one 0.5 mg tablet orally daily x 3 days, then one 0.5 mg tablet twice daily x 4 days); then 1 mg twice daily thereafter. Brief individual counseling at clinic visits |
oral varenicline tablets
Other Names:
~10-minute individual counseling at each of 6 clinic visits
|
Active Comparator: Standard Run-In
** 3 weeks of placebo followed by 1 week of varenicline prior to the target quit date (TQD) ** + 11 weeks of post-TQD varenicline Standard varenicline dosing titration in initial week of therapy (one 0.5 mg tablet orally daily x 3 days, then one 0.5 mg tablet twice daily x 4 days); then 1 mg twice daily thereafter. Brief individual counseling at clinic visits |
oral varenicline tablets
Other Names:
~10-minute individual counseling at each of 6 clinic visits
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Number of Participants With Continuous Abstinence at End-of-Treatment (EOT) as Assessed by Self-Report and Bio-verification
Time Frame: Self-report Treatment Weeks 12-15; bio-verification ~Week 16
|
Number of participants with bio-verified (cotinine level of 15 ng/mL or less) self-reported continuous abstinence from smoking (not even a puff) during the final four weeks of treatment
|
Self-report Treatment Weeks 12-15; bio-verification ~Week 16
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Pre-quit Change in Cigarettes Smoked Per Day
Time Frame: Treatment Week 1 vs. Treatment Week 4 (final week before TQD)
|
Percent change in smoking behavior (self-reported cigarettes per day; CPD) from timeline follow-back (TLFB) interviews during the pre-quit phase of the study.
|
Treatment Week 1 vs. Treatment Week 4 (final week before TQD)
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Number of Participants With Continuous Abstinence at 6-Month Follow-Up as Assessed by Self-Report and Bio-verification
Time Frame: Self-report Treatment Weeks 12-28; bio-verification ~Week 16 and ~Week 29
|
Number of participants with continuous abstinence at the 6-month follow-up (no self-reported smoking during weeks 12-28 AND cotinine level 15 ng/mL or less at EOT and 6 month follow-up)
|
Self-report Treatment Weeks 12-28; bio-verification ~Week 16 and ~Week 29
|
Collaborators and Investigators
Publications and helpful links
General Publications
- Hawk LW Jr, Tiffany ST, Colder CR, Ashare RL, Wray JM, Tyndale RF, Brandon TH, Mahoney MC. Effect of Extending the Duration of Prequit Treatment With Varenicline on Smoking Abstinence: A Randomized Clinical Trial. JAMA Netw Open. 2022 Nov 1;5(11):e2241731. doi: 10.1001/jamanetworkopen.2022.41731.
- Ferkin AC, Tonkin SS, Maguin E, Mahoney MC, Colder CR, Tiffany ST, Hawk LW. A Psychometric Evaluation of the Stanford Expectations of Treatment Scale (SETS) in the Context of a Smoking Cessation Trial. Nicotine Tob Res. 2022 Nov 12;24(12):1914-1920. doi: 10.1093/ntr/ntac187.
- Mahoney MC, Park E, Schlienz NJ, Duerr C, Hawk LW. Transitioning to Remote Clinic Visits in a Smoking Cessation Trial During the COVID-19 Pandemic: Mixed Methods Evaluation. JMIR Form Res. 2021 Apr 30;5(4):e25541. doi: 10.2196/25541.
- Lawson SC, Gass JC, Cooper RK Jr, Tonkin SS, Colder CR, Mahoney MC, Tiffany ST, Hawk LW Jr. The impact of three weeks of pre-quit varenicline on reinforcing value and craving for cigarettes in a laboratory choice procedure. Psychopharmacology (Berl). 2021 Feb;238(2):599-609. doi: 10.1007/s00213-020-05713-7. Epub 2020 Nov 21.
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- STUDY00000911
- R01CA206193 (U.S. NIH Grant/Contract)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
IPD Sharing Time Frame
IPD Sharing Access Criteria
IPD Sharing Supporting Information Type
- STUDY_PROTOCOL
- ICF
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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