Treating Nicotine Dependence in Schizophrenic Individuals: Effectiveness of Bupropion - 1

January 11, 2017 updated by: National Institute on Drug Abuse (NIDA)

Optimizing Treatment for Schizophrenic Smokers

Schizophrenic individuals are typically nicotine dependent smokers who find it difficult to quit smoking. The purpose of this study is to determine the effectiveness of bupropion SR (commonly known as Zyban) in combination with a nicotine transdermal patch (NTP), in helping schizophrenic individuals quit smoking. In addition, this study will evaluate how the combination of bupropion SR and NTP affects psychiatric symptoms and medication side effects.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Past research on the use of the NTP, atypical antipsychotics, and bupropion in schizophrenic individuals to aid in smoking cessation has been encouraging. The purpose of this study is to compare bupropion SR to a placebo to determine its effectiveness when used in combination with an NTP to help schizophrenic individuals quit smoking.

Participants in this double-blind, placebo-controlled study will be randomly assigned to receive either the NTP (21 mg/day) and placebo or the NTP and bupropion SR (300 mg/day). Participants will begin taking one pill each day of bupropion SR (150 mg/day) or placebo at the start of the second week of the study. After three days, the dose of bupropion SR or placebo will increase to 2 pills each day. Participants will continue this dosing regimen until the end of Week 10. Throughout the 10-week study, participants will receive weekly group therapy.

Study Type

Interventional

Enrollment (Actual)

59

Phase

  • Phase 2

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • DSM-IV diagnosis of schizophrenia or schizoaffective disorder and nicotine dependence
  • Fagerstrom Test for Nicotine Dependence (FTND) score greater than 5
  • Smokes at least 20 cigarettes per day (1 pack per day)
  • Expired breath CO level > 10 ppm and cotinine level > 210 ng/ml at the baseline measurement
  • Currently taking a stable dose of antipsychotic
  • Complete remission from positive symptoms of psychosis as judged by a psychiatric evaluation

Exclusion Criteria:

  • Meets criteria for current abuse or dependence for any alcohol or illicit substance within the past month
  • History of hypersensitivity to bupropion or the nicotine transdermal patch (NTP)
  • Current diagnosis of a serious documented medical disorder that would make bupropion treatment risky OR results of psychiatric/medical screening that suggest a reason for concern (e.g., a history of severe heart, liver, or kidney disease or diabetes mellitus)
  • Currently taking monoamine oxidase inhibitors or bupropion (Zyban or Wellbutrin)
  • Currently taking diabetes mellitus medications, St. John's Wort, appetite suppressants, ephedrine-containing medications, theophylline, clonidine, reserpine, methyldopa, or anti-anginal medications (e.g., beta-blockers, calcium channel blockers, nitroglycerin preparations)
  • History of schizoaffective disorder and not stabilized on a mood stabilizer (e.g., lithium, valproate, carbamazepine)

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: 1
Nicotine Patch + Bupropion
Drug: Bupropion
Drug: nicotine transdermal patch
Placebo Comparator: 2
Nicotine patch + placebo
Drug: nicotine transdermal patch

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
7 day point prevalence of cigarette abstinence
Time Frame: End of trial (week 10)
End of trial (week 10)

Secondary Outcome Measures

Outcome Measure
Time Frame
Craving
Time Frame: assessed weekly
assessed weekly
Medication compliance
Time Frame: assessed weekly
assessed weekly
Depression
Time Frame: assessed at weeks 1, 4, 7, 10 and at six-month followup
assessed at weeks 1, 4, 7, 10 and at six-month followup
Withdrawal symptoms
Time Frame: assessed weekly and at six month followup
assessed weekly and at six month followup
Schizophrenic symptoms
Time Frame: assessed at weeks 1, 4, 7, 10 and at six-month followup
assessed at weeks 1, 4, 7, 10 and at six-month followup

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

National Institute on Drug Abuse (NIDA)

Investigators

  • Principal Investigator: Tony P George, M.D., Yale University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

September 1, 2001

Study Completion (Actual)

May 1, 2007

Study Registration Dates

First Submitted

July 26, 2005

First Submitted That Met QC Criteria

July 26, 2005

First Posted (Estimate)

July 28, 2005

Study Record Updates

Last Update Posted (Estimate)

January 12, 2017

Last Update Submitted That Met QC Criteria

January 11, 2017

Last Verified

August 1, 2007

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • NIDA-13672-1
  • DPMC (Other Identifier: NIDA)
  • R01-13672-1

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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