Seroquel Therapy for Substance Use Disorders Comorbid With Schizophrenia
It is hypothesized that the atypical antipsychotic, Seroquel, will cause significant reduction in drug and alcohol cravings in patients with schizophrenia and comorbid cocaine and/methamphetamine dependence compared to the atypical antipsychotic, risperidone (Risperdal).
Patients treated with Seroquel will have less use of cocaine and/or methamphetamine as measured by the Time Line Follow-back, over a 24-week follow-up period.
|Schizophrenia Schizoaffective Disorder Substance Abuse Substance Dependence||Drug: Quetiapine Drug: Risperidone||Phase 4|
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||Seroquel (Quetiapine) Therapy for Schizophrenia and Schizoaffective Disorders and Comorbid Cocaine and/or Amphetamine Abuse/Dependence: A Comparative Study With Risperidone|
- 50% or greater decrease in the drug use determined by the Time Line Follow Back method versus baseline.
- Psychiatric symptoms will be assessed with the CGI, PANSS, BPRS, HAM-D, and HAM-A.Safety and tolerability will be assessed by patient and physician reported adverse events and AIMS.Quality of life will be assessed with QoLI.
|Study Start Date:||November 2003|
|Study Completion Date:||December 2005|
Schizophrenia is a serious mental illness that afflicts approximately 1% of the population (1). Often these patients have comorbid cocaine and amphetamine dependence, which increases the severity of psychotic symptoms associated with schizophrenia, decreases treatment compliance and worsens prognosis.
The treatment of schizophrenia with comorbid cocaine and/or amphetamine dependence is complex and involves adherence to psychiatric medications, most often antipsychotic agents, along with participation in specific substance abuse treatment such as structured living, attendance at self-help group meetings, individual and group therapy and a commitment to sobriety. In the absence of specific pharmacotherapy of cocaine and amphetamine dependence, various antipsychotic medications have been compared to see if they impact comorbid cocaine and amphetamine abuse in addition to their antipsychotic effects.
The primary objective of this study is to test whether Seroquel as a mono-therapy decreases cocaine and/or methamphetamine use in patients with schizophrenia as compared to risperidone.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00208143
|United States, Nebraska|
|Creighton University Psychiatry and Research Center|
|Omaha, Nebraska, United States, 68131|
|Principal Investigator:||Frederick Petty, MD, PhD||Creighton University|