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D-Cycloserine Enhancement of Exposure-Based CBT for Smoking Cessation (DCSSmoking)

This study has been withdrawn prior to enrollment.
(Study was not funded and pilot work proved impractical.)
Sponsor:
ClinicalTrials.gov Identifier:
NCT00827281
First Posted: January 22, 2009
Last Update Posted: May 1, 2017
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 (Responsible Party):
Michael Otto, Boston University Charles River Campus
  Purpose
This study examines whether isolated doses of D-cycloserine enhance the efficacy of CBT for smoking cessation.

Condition Intervention Phase
Smokers Drug: D-cycloserine Drug: Placebo Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: D-Cycloserine Enhancement of Exposure-Based CBT for Smoking Cessation

Resource links provided by NLM:


Further study details as provided by Michael Otto, Boston University Charles River Campus:

Primary Outcome Measures:
  • Carbon monoxide analysis [ Time Frame: Baseline, Weeks 4, 5, 6, 7, 8, 9, 13, 21, & 29 ]
  • Cotinine levels in saliva [ Time Frame: Baseline, Weeks 21 & 29 ]

Secondary Outcome Measures:
  • Anxiety Sensitivity Index [ Time Frame: Baseline, Weeks 5, 6, 7, 8, 9, 13, 21 & 29 ]
  • Minnesota Withdrawal Scale [ Time Frame: Each visit ]
  • Mood & Anxiety Symptom Questionnaire [ Time Frame: Baseline, Weeks 1, 2, 3, 4, 5, 6, 7, & 8 ]
  • Smoking Cessation Self-Efficacy [ Time Frame: Baseline, Weeks 3, 4, 5, 6, 7, 8, 9, 13, 21 & 29 ]

Enrollment: 0
Actual Study Start Date: August 2008
Study Completion Date: July 15, 2015
Primary Completion Date: July 15, 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
DCS-augmented CBT for smoking cessation
Drug: D-cycloserine
Single dosage prior to sessions 3, 4 & 5
Other Name: DCS
Placebo Comparator: 2
Placebo-augmented CBT for smoking cessation
Drug: Placebo
Single dosage prior to sessions 3, 4 & 5

Detailed Description:
In comparison to placebo-augmented cognitive behavioral therapy (CBT), D-cycloserine-augmented CBT will lead to a greater reduction in both short-and long-term point prevalence abstinence as well as time to first smoking lapse and time to smoking relapse.
  Eligibility

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 65 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

1. Be a regular smoker for at least one year 3. Currently smoke an average of at least 10 cigarettes per day 4. Report a motivation to quit smoking in the next month of at least 5 on a 10 point scale 5. Score 20 or greater on the 16-item Anxiety Sensitivity Index (Schmidt & Joiner, 2002).

Exclusion Criteria:

  1. Current diagnosis of a psychotic, eating, developmental or bipolar disorder (as determined by the SCID)
  2. Current anxiety or mood disorder rated moderate or greater (i.e., CGI score of 4 or greater for an anxiety or depressive disorder or any current or recent—1 year--suicidal ideation)
  3. Psychoactive substance abuse or dependence (excluding nicotine dependence) within the past 6 months
  4. Current use of isoniazid psychotropic medication
  5. A history of significant medical condition, such as cardiovascular, neurologic, gastrointestinal, pregnancy and/or breast feeding, history of seizure (other than febrile seizures in childhood) or other systemic illness and/or be deemed as currently unhealthy in the context of a complete physical examination
  6. Limited mental competency and the inability to give informed, voluntary, written consent to participate,
  7. Current use of any pharmacotherapy or psychotherapy for smoking cessation not provided by the researchers during the quit attempt,
  8. Concurrent psychotherapy initiated within three months of baseline, or ongoing psychotherapy of any duration directed specifically toward treatment of anxiety or mood disorder other than general supportive therapy initiated at least 3 months prior to the study
  9. Use of other tobacco products
  10. Planning on moving (outside of the immediate area) in the next six months
  11. Insufficient command of the English language (i.e., they cannot carry on a conversation with an interviewer in the English language or read associated text).
  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): NCT00827281


Locations
United States, Massachusetts
Boston University
Boston, Massachusetts, United States, 02215
Sponsors and Collaborators
Boston University Charles River Campus
  More Information

Responsible Party: Michael Otto, Ph.D., Boston University Charles River Campus
ClinicalTrials.gov Identifier: NCT00827281     History of Changes
Other Study ID Numbers: 1728
First Submitted: January 21, 2009
First Posted: January 22, 2009
Last Update Posted: May 1, 2017
Last Verified: April 2017

Keywords provided by Michael Otto, Boston University Charles River Campus:
DCS
CBT
smoking
tobacco

Additional relevant MeSH terms:
Cycloserine
Anti-Infective Agents, Urinary
Anti-Infective Agents
Renal Agents
Antibiotics, Antitubercular
Antitubercular Agents
Anti-Bacterial Agents
Antimetabolites
Molecular Mechanisms of Pharmacological Action