Effects of Varenicline on Smoking Reminders

Nicotine Dependence Clinical Trial

— VSMK  

Official title:

Characterizing a Cue-vulnerable Pharmaco-responsive Endophenotype in Smokers

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT01524627
• Other study ID #: 813779
• Secondary ID: 1R01DA029845-01A
• Status: Completed
• Phase: Phase 2
• First received: January 10, 2012
• Last updated: August 15, 2017
• Start date: December 2011
• Est. completion date: November 2015

Study information

• Verified date: August 2017
• Source: University of Pennsylvania
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Varenicline is the best smoking cessation agent to date; however it is only effective in a subgroup of smokers and is associated with undesirable side effects in other subgroups. To understand the underlying pharmaco-heterogeneity, the proposed project will use perfusion functional magnetic resonance imaging and a functional candidate gene association approach using brain, behavioral, and clinical endpoints in a placebo-controlled study of chronic varenicline administration in smokers. Brain and behavioral responses to smoking cues will be will be significantly greater in 9/10-repeats compared to 10/10-repeats. DAT 9/10-repeat smokers receiving varenicline will have better treatment outcome compared to 10/10-repeats. For the purposes of the clinical trial portion of the study, the change from cigarettes per day at Baseline to the last day of treatment will be reported.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 124
• Est. completion date: November 2015
• Est. primary completion date: November 2015
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 60 Years

Eligibility

Inclusion Criteria:

• Physically healthy male or female nicotine dependent patients ages 18-60 without other current drug dependence or psychiatric diagnosis.

• Smoke = 10 cigarettes per day for at least 6 months prior to study start date.

• Females must be non-pregnant, non-lactating and either be of non-childbearing potential (i.e. sterilized via hysterectomy or bilateral tubal ligation or at least 1 year post-menopausal) or of child bearing potential but practicing a medically acceptable method of birth control from at least 2 weeks prior to screening until 30 days after the last dose of varenicline. Examples of medically acceptable methods for this protocol include barrier (diaphragm or condom) with spermicide, an intrauterine (IUD), oral contraceptives, levonorgestrel implant, or complete abstinence.

• Subjects provide voluntary informed consent.

• Subjects must read at 8th grade level or higher.

Exclusion Criteria:

• History of head trauma or injury causing loss of consciousness, lasting more than three (3) minutes or associated with skull fracture or inter-cranial bleeding or abnormal MRI.

• Presence of magnetically active prosthetics, plates, pins, permanent retainer, bullets, etc. in patient's body (unless a radiologist confirms that it's presence is unproblematic). An x-ray may be obtained to determine eligibility given the possibility of a foreign body.

• Self report of HIV positive and on medication for symptoms: Determined on an individual basis by results from the physical examination and final approval by the study physician.

• Symptomatic presence of other hematological disease.

• Clinically significant hepatic (liver), renal (kidney), neurological, or endocrinological abnormalities.

• History of any cardiovascular event within the last 6 months and any serious/significant cardiovascular event in the subject's life. This will be determined on an individual basis by the study physician.

• History of psychosis or seizures.

• Use of medications or natural herbs that may cause sedation or may effect the brain systems that are being studied (medication use will be evaluated on a case-by-case basis).

• Claustrophobia or other medical condition preventing subject from lying in the MRI for approximately one (1) hour.

Related Conditions & MeSH terms

• Nicotine Dependence
• Tobacco Use Disorder

Intervention

Drug:
• Varenicline
Varenicline will be prescribed to non-abstinent smokers at the same doses as have been demonstrated to be clinically effective: 0.5 mg twice a day for 3 days and then 1mg twice daily for the remainder of the treatment course of 8 weeks.
• Placebo
Placebo will be prescribed to non-abstinent smokers at the same doses as have been demonstrated to be clinically effective for Varenicline: 0.5 mg twice a day for 3 days and then 1mg twice daily for the remainder of the treatment course of 8 weeks.

Locations

Country	Name	City	State
United States	University of Pennsylvania Addiction Treatment Research Center	Philadelphia	Pennsylvania

Sponsors (3)

Lead Sponsor	Collaborator
University of Pennsylvania	National Institute on Drug Abuse (NIDA), National Institutes of Health (NIH)

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Cigarettes Per Day	Cigarettes per day at Baseline versus 8 weeks of treatment, placebo-controlled	last week of treatment (1-8 weeks)