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A 52-Week Placebo-Controlled Study Evaluating the Safety of Varenicline

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: September 2, 2005
Last Update Posted: June 4, 2007
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by:
The primary purpose of this study is to obtain safety information on cigarette smokers treated with 52 weeks of varenicline regardless of smoking status.

Condition Intervention Phase
Smoking Cessation Drug: varenicline (CP-526,555) Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double
Primary Purpose: Treatment
Official Title: A 52-Week, Double-Blind, Placebo-Controlled, Randomized, Multicenter Study Evaluating the Safety of Varenicline Tartrate ( CP-526,555) for Smoking Cessation

Resource links provided by NLM:

Further study details as provided by Pfizer:

Primary Outcome Measures:
  • Summarization of safety data in smokers treated with either varenicline or placebo.

Secondary Outcome Measures:
  • Information will be collected for the 7 day point prevalence of smoking cessation.

Estimated Enrollment: 375
Study Start Date: October 2003
Estimated Study Completion Date: March 2005

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 75 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Subjects must have smoked an average of at least 10 cigarettes per day during the past year and over the month prior to the screening visit, with no period of abstinence greater than 3 months in the past year.

Exclusion Criteria:

  • Subjects with clinically significant, recent cardiovascular disease.
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00143299

United States, Colorado
Pfizer Investigational Site
Denver, Colorado, United States, 80212
United States, Massachusetts
Pfizer Investigational Site
Milford, Massachusetts, United States, 01757
United States, New Mexico
Pfizer Investigational Site
Albuquerque, New Mexico, United States, 87108
United States, New York
Pfizer Investigational Site
Syracuse, New York, United States, 13210
United States, North Carolina
Pfizer Investigational Site
Charlotte, North Carolina, United States, 28207
United States, Oklahoma
Pfizer Investigational Site
Oklahoma City, Oklahoma, United States, 73103
United States, Pennsylvania
Pfizer Investigational Site
Harleysville, Pennsylvania, United States, 19438
United States, Virginia
Pfizer Investigational Site
Richmond, Virginia, United States, 23249
Australia, South Australia
Pfizer Investigational Site
Woodville South, South Australia, Australia, 5011
Sponsors and Collaborators
Study Director: Pfizer CT.gov Call Center Pfizer
  More Information

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
ClinicalTrials.gov Identifier: NCT00143299     History of Changes
Other Study ID Numbers: A3051037
First Submitted: August 31, 2005
First Posted: September 2, 2005
Last Update Posted: June 4, 2007
Last Verified: June 2007

Additional relevant MeSH terms:
Nicotinic Agonists
Cholinergic Agonists
Cholinergic Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs