Long-term Varenicline Treatment for Smoking Cessation

NCT ID: NCT00828113

Last Updated: 2015-11-20

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE4

Total Enrollment

101 participants

Study Classification

INTERVENTIONAL

Study Start Date

2009-01-31

Study Completion Date

2011-02-28

Brief Summary

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This is a clinical study of the efficacy and safety of up to 52 weeks of varenicline therapy in conjunction with individual counseling for smoking cessation. Adult volunteers in generally good health, smoking 5 or more cigarettes per day, will receive 13 weeks of open-label varenicline therapy. At 12 weeks after their target quit date, they will be assigned in a random, double-blind manner to either 40 additional weeks of varenicline or placebo. It is hypothesized that biochemically-confirmed abstinence rates will be higher for the varenicline group at 52 weeks. Participants will be followed for an additional 26 weeks post-treatment.

Detailed Description

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Conditions

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Smoking

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Extended treatment

52-week varenicline therapy + individual smoking cessation counseling

Group Type EXPERIMENTAL

varenicline

Intervention Type DRUG

Extension of 1 mg twice daily treatment to 52 weeks

varenicline

Intervention Type DRUG

Double-blind switch to placebo after 12 weeks of open-label therapy

Individual smoking cessation counseling

Intervention Type BEHAVIORAL

Brief (\<10 minutes) smoking cessation counseling delivered at clinic visits

Standard treatment

13 weeks of varenicline therapy + individual smoking cessation counseling

Group Type ACTIVE_COMPARATOR

varenicline

Intervention Type DRUG

Extension of 1 mg twice daily treatment to 52 weeks

varenicline

Intervention Type DRUG

Double-blind switch to placebo after 12 weeks of open-label therapy

Individual smoking cessation counseling

Intervention Type BEHAVIORAL

Brief (\<10 minutes) smoking cessation counseling delivered at clinic visits

Interventions

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varenicline

Extension of 1 mg twice daily treatment to 52 weeks

Intervention Type DRUG

varenicline

Double-blind switch to placebo after 12 weeks of open-label therapy

Intervention Type DRUG

Individual smoking cessation counseling

Brief (\<10 minutes) smoking cessation counseling delivered at clinic visits

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* daily smoker
* 5+ cigarettes per day for at least one year
* expired carbon monoxide level of 5+ ppm

Exclusion Criteria

* current use of smoking cessation pharmacotherapies
* current or history of psychotic disorder
* current major depressive disorder
* history of suicidal ideation in the previous 3 months
* unstable medical condition
* pregnant, nursing, or planning to become pregnant
* planning to move from study area within 18 months
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Pfizer

INDUSTRY

Sponsor Role collaborator

University of Wisconsin, Madison

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Center for Tobacco Research and Intervention

Madison, Wisconsin, United States

Site Status

Center for Tobacco Research and Intervention

Milwaukee, Wisconsin, United States

Site Status

Countries

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United States

References

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Livingstone-Banks J, Fanshawe TR, Thomas KH, Theodoulou A, Hajizadeh A, Hartman L, Lindson N. Nicotine receptor partial agonists for smoking cessation. Cochrane Database Syst Rev. 2023 May 5;5(5):CD006103. doi: 10.1002/14651858.CD006103.pub8.

Reference Type DERIVED
PMID: 37142273 (View on PubMed)

Other Identifiers

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H-2008-0149

Identifier Type: -

Identifier Source: org_study_id