A Medication Trial Combined With Behavior Therapy for Individuals With Obsessive-compulsive Disorder

Study Overview
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Brief Summary
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This study examines the efficacy of the medication D-Cycloserine in the reduction of obsessions and compulsions in individuals with obsessive-compulsive disorder (OCD). All study participants will receive Exposure and Response Prevention, a common form of behavior therapy for individuals with OCD. Half (50%) of the participants will be randomly assigned to the placebo condition and the other half (50%) will be randomly assigned to receive D-Cycloserine. Because all participants will receive 10 sessions of behavior therapy, all participants are expected to improve from this treatment.

Detailed Description
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The study consists of Behavior Therapy (Exposure and Response Prevention; ERP) for OCD. Specifically, it involves exposure to anxiety-provoking situations and response-prevention of any rituals. ERP has shown to be effective for many individuals with OCD. All assessments and treatment sessions are at no cost to the patients. 50% of the patients will randomly be assigned to the D-Cycloserine (DCS) condition, and 50% of the patients will be assigned to a placebo condition. D-Cycloserine is FDA-approved for the treatment of Tuberculosis. However, recent research in other anxiety disorders has shown that D-Cycloserine plus Behavior Therapy is more effective than Behavior Therapy alone. This treatment study has two active conditions. That is, all patients will receive Behavior Therapy and we do expect that everybody will improve from this treatment. However, it may be that those patients in the DCS condition will improve somewhat more than those in the placebo condition. The treatment will be structured with homework and repeated assessments every 4 weeks. Assessments are extremely important as they guide the treatment and provide the study investigators necessary information about the treatment. The treatment consists of 10 sessions (twice a week) plus post-treatment and follow-up assessments at 1 and 6 months.

Official Title
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A Randomized, Double-blind, Placebo-controlled Medication Trial With D-Cycloserine for Individuals With Obsessive-compulsive Disorder Currently Receiving Behavior Therapy

Conditions
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Obsessive-Compulsive Disorder

Intervention / Treatment
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* Behavioral: behavior therapy
* Drug: D-Cycloserine


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Meets diagnosis for obsessive-compulsive disorder Exclusion Criteria: History of psychotic disorders History of neurological disorders History of bipolar disorders

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple


Arms and Interventions

| Intervention/Treatment |
| --- |
|Behavioral: behavior therapy|nan|
|Drug: D-Cycloserine|nan|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| significant reduction of OCD symptoms after the completion of treatment |  |  | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| significant reduction of depressive symptoms after the completion of treatment |  |  | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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double-blind, obsessive-compulsive disorder, behavior therapy, D-Cycloserine, medication, treatment trial, placebo-controlled, randomized