Vigabatrin for Treatment of Cocaine Dependence

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
Catalyst Pharmaceutical Partners, Inc
ClinicalTrials.gov Identifier:
NCT00611130
First received: January 28, 2008
Last updated: May 10, 2012
Last verified: May 2012
Results First Received: April 13, 2012  
Study Type: Interventional
Study Design: Allocation: Randomized;   Endpoint Classification: Safety/Efficacy Study;   Intervention Model: Parallel Assignment;   Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor);   Primary Purpose: Treatment
Condition: Cocaine Dependence
Interventions: Drug: vigabatrin
Drug: placebo

  Participant Flow
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Recruitment Details
Key information relevant to the recruitment process for the overall study, such as dates of the recruitment period and locations
01/08-01/09 at 11 US research trial sites.

Pre-Assignment Details
Significant events and approaches for the overall study following participant enrollment, but prior to group assignment
After Informed Consent obtained, subjects entered a 2-4 week Screening/Baseline Phase to determine whether all Inclusion/Exclusion Criteria were met. Randomization strata included gender, primary method of cocaine administration (snort or intravenous/smoke) & use in last 30 days (≤18 days or >18 days)

Reporting Groups
  Description
CPP-109 Vigabatrin CPP-109 tablets, 500 mg. 3 Tablets bid.
Placebo Matching Placebo Tablets. 3 tablets bid.

Participant Flow:   Overall Study
    CPP-109 Vigabatrin     Placebo  
STARTED     92     94  
Completed 12 Week Treatment Phase     61     64  
COMPLETED     43     47  
NOT COMPLETED     49     47  
Lost to Follow-up                 25                 29  
Protocol noncompliance                 7                 6  
Withdrawal by Subject                 6                 5  
Unspecified                 5                 4  
Incarceration                 3                 2  
Administrative                 1                 1  
Adverse Event                 1                 0  
Death                 1                 0  



  Baseline Characteristics


  Outcome Measures
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1.  Primary:   Proportion of Subjects in Each Treatment Group Abstinent During the Last 2 Weeks of Treatment.   [ Time Frame: Week 13 ]

2.  Post-Hoc:   Medication Compliance   [ Time Frame: Week 2, 4, 6 & 9-11 ]


  Serious Adverse Events


  Other Adverse Events


  Limitations and Caveats
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Limitations of the study, such as early termination leading to small numbers of participants analyzed and technical problems with measurement leading to unreliable or uninterpretable data
Lack of subject medication compliance, site-to-site variability in medication compliance possibly indicative of differing site capabilities to attract subjects sufficiently motivated to stop using cocaine.


  More Information