NCT01309685

Brief Summary

Background: \- Varenicline (Chantix ) is a drug that is approved by the Food and Drug Administration (FDA) to help people stop smoking. Varenicline is very effective in helping some people quit smoking, but is less effective for others. Researchers are interested in conducting more in-depth studies into how varenicline works, including its effect on smokers' responses to items that may trigger cigarette cravings, in order to develop better smoking cessation medications. Objectives: \- To examine the effectiveness of varenicline as an effective medication for tobacco addiction by studying its effect on nicotine reinforcement, nicotine-seeking behavior, cue-elicited craving, and performance impairment and craving after overnight tobacco deprivation. Eligibility: \- Individuals between 18 and 50 years of age who have been smoking at least 10 cigarettes per day for at least 2 years. Design:

  • This study will require 12 study visits. Some visits will be brief and other visits that involve test sessions will last up to 8 hours. If no sessions are repeated, the study will take 26 days. Participants will not be required to attempt to quit smoking during this study.
  • Participants will be screened with a full physical examination and medical history, blood and urine tests, and other tests as required by the study researchers.
  • Participants will take two sets of pills during the study: the first set during the first 12 days of the study, followed by a 2-day break, then the second set during the last 12 days. Some of the pills will contain varenicline, and others will be placebos.
  • On Day 1 of the study, participants will come to the National Institute on Drug Abuse to receive the first set of pills. Participants will take the first pill before leaving.
  • On Day 8, participants will have a training session that will measure the amount of carbon monoxide in the breath. Participants will also complete several questionnaires about smoking habits and current mood, and will have a chance to practice the procedures they will do in the study.
  • On Days 9 and 10, participants will have behavioral test sessions that will last 7 to 8 hours. Day 9 will involve tests of cue response to items that may trigger cigarette cravings, and tests of general nicotine cravings over several hours. Day 10 will involve tests of general nicotine cravings over several hours, and then tests of nicotine-seeking behavior. Participants will be provided with lunch during these all-day sessions.
  • On Day 11, participants will have memory and attention tests, and will provide a blood sample. Participants will not be allowed to smoke for 12 hours before the start of the next test on Day 12.
  • On Day 12, participants will provide a breath sample, and will have two sets of memory and attention tests before they will be permitted to start smoking again. There will be no tests on Days 13 and 14.
  • Starting on Day 15, participants will repeat the schedule of tests from Days 1 through 12 with the second set of pills.

Trial Health

15
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Timeline
Completed

Started Feb 2011

Typical duration for phase_1

Status
withdrawn

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

February 13, 2011

Completed
19 days until next milestone

First Submitted

Initial submission to the registry

March 4, 2011

Completed
3 days until next milestone

First Posted

Study publicly available on registry

March 7, 2011

Completed
3.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 26, 2014

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

November 26, 2014

Completed
Last Updated

October 6, 2017

Status Verified

November 26, 2012

Enrollment Period

3.8 years

First QC Date

March 4, 2011

Last Update Submit

October 5, 2017

Conditions

Keywords

CognitionSmokingNicotineVareniclineWithdrawal

Outcome Measures

Primary Outcomes (1)

  • Tobacco craving, nicotine reinforcement, cognitive performance

Secondary Outcomes (1)

  • Nicotine dependence, smoking history, mood

Interventions

Eligibility Criteria

Age18 Years - 50 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • year old males and females
  • smoking at least 10 cigarettes per day for at least 2 years
  • estimated IQ score greater than or equal to 85
  • medically and psychologically healthy as determined by screening criteria

You may not qualify if:

  • definite plan to reduce or quit tobacco use in the next 30 days
  • treatment for tobacco dependence in the past 3 months
  • use of nicotine replacement products, bupropion, or varenicline in the past 3 months as an aid to quit or reduce smoking
  • use of any oral tobacco product in the past 6 months
  • history of drug or alcohol dependence within last 5 years
  • consumption of more than 15 alcoholic drinks per week on average during the past month
  • use of any illicit drug more than once per week on average during the past month
  • current use of any medication that would interfere with the protocol in the opinion of MAI
  • pregnant, nursing, or become pregnant during the study
  • HIV positive

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Related Publications (3)

  • Bell SL, Taylor RC, Singleton EG, Henningfield JE, Heishman SJ. Smoking after nicotine deprivation enhances cognitive performance and decreases tobacco craving in drug abusers. Nicotine Tob Res. 1999 Mar;1(1):45-52. doi: 10.1080/14622299050011141.

    PMID: 11072387BACKGROUND
  • Bickel WK, Hughes JR, DeGrandpre RJ, Higgins ST, Rizzuto P. Behavioral economics of drug self-administration. IV. The effects of response requirement on the consumption of and interaction between concurrently available coffee and cigarettes. Psychopharmacology (Berl). 1992;107(2-3):211-6. doi: 10.1007/BF02245139.

    PMID: 1615122BACKGROUND
  • Burstein AH, Fullerton T, Clark DJ, Faessel HM. Pharmacokinetics, safety, and tolerability after single and multiple oral doses of varenicline in elderly smokers. J Clin Pharmacol. 2006 Nov;46(11):1234-40. doi: 10.1177/0091270006291837.

    PMID: 17050788BACKGROUND

MeSH Terms

Conditions

Substance-Related DisordersSmoking

Interventions

Varenicline

Condition Hierarchy (Ancestors)

Chemically-Induced DisordersMental DisordersBehavior

Intervention Hierarchy (Ancestors)

BenzazepinesHeterocyclic Compounds, 2-RingHeterocyclic Compounds, Fused-RingHeterocyclic CompoundsQuinoxalines

Study Officials

  • Stephen J Heishman, Ph.D.

    National Institute on Drug Abuse (NIDA)

    PRINCIPAL INVESTIGATOR
0

Study Design

Study Type
interventional
Phase
phase 1
Allocation
RANDOMIZED
Purpose
OTHER
Intervention Model
CROSSOVER
Sponsor Type
NIH

Study Record Dates

First Submitted

March 4, 2011

First Posted

March 7, 2011

Study Start

February 13, 2011

Primary Completion

November 26, 2014

Study Completion

November 26, 2014

Last Updated

October 6, 2017

Record last verified: 2012-11-26