Varenicline Versus Nicotine Replacement for Methadone-Maintained Smokers
OBJECTIVES:
Primary
- To determine whether varenicline, a nicotine receptor partial agonist, leads to a
higher rate of smoking cessation than combination nicotine replacement therapy with
nicotine patch prescription plus ad libitum nicotine gum delivery in
methadone-maintained smokers.
Secondary
- To test the effects of the treatments on smoking urges, withdrawal symptoms, and
reinforcing effects of smoking.
- To test the effects of the treatments on methadone treatment outcomes, including
retention in methadone maintenance, methadone dose changes, and continued use of
illicit drugs as measured by urine toxicologies.
OUTLINE: This is a multicenter study. Patients are stratified based on gender and level of
nicotine dependence. Patients are randomized to 1 of 3 intervention arms.
At baseline, all patients receive a minimal behavioral intervention using a 3-minute, simple
smoking cessation counseling strategy, a self-help manual, and a telephone quit-line number.
- Arm I (varenicline): Patients receive oral varenicline once daily on days 1-3 and twice
daily thereafter for a total of 6 months or when a comfortable level of smoking
abstinence is reached.
- Arm II (placebo): Patients receive oral varenicline placebo once daily on days 1-3 and
twice daily thereafter for a total of 6 months or when a comfortable level of smoking
abstinence is reached.
- Arm III (nicotine patch/gum): Patients receive a nicotine patch, with doses tapering
over time for a total of 26 weeks. Patients also receive nicotine gum to quell
breakthrough urges. Patients may stop treatment when a comfortable level of smoking
abstinence is reached.
Patients complete a brief interview over 10-15 minutes at 2 weeks and monthly during months
1-5. They complete a longer interview over 45 minutes at months 6 and 12 and provide breath
samples (for carbon monoxide monitoring) and urine samples (for cotinine testing).
NOTE: Smoking cessation may prevent certain smoking-related illnesses, including cancer.
PROJECTED ACCRUAL: A total of 602 patients (258 receiving varenicline, 258 receiving
nicotine replacement therapy, and 86 receiving placebo) will be accrued for this study.
Interventional
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator, Outcomes Assessor), Primary Purpose: Prevention
Rates of smoking cessation
12 months
No
Michael Stein, MD
Study Chair
Butler Hospital
United States: Federal Government
CDR0000616663
NCT00790569
September 2008
December 2012
Name | Location |
---|---|
Rhode Island Hospital Comprehensive Cancer Center | Providence, Rhode Island 02903 |