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Clinical Trial Summary

The purpose of the study is to assess the effectiveness and safety of risperidone (an antipsychotic medication) versus placebo in treating mania during 3 weeks of treatment in patients with Bipolar I Disorder who suffer from manic or mixed episodes.


Clinical Trial Description

Antipsychotic agents have, for a long time, been used to alleviate the severe behavioral problems associated with manic episodes. Risperidone, widely used in the treatment of schizophrenia, has been shown to be effective in the treatment of manic and mixed episodes associated with bipolar disorders. This is a randomized, double-blind study to evaluate the effectiveness and safety of risperidone compared with placebo in the treatment of patients with bipolar disorder who are experiencing a manic or mixed episode. Patients who are voluntarily hospitalized at the time of study enrollment (for treatment of the manic episode) receive study medication to be taken orally, once a day. Patients receive placebo or risperidone at a starting dose of 3 mg, with gradual dose increases or decreases at the investigator's discretion within the daily dosing range of 1 to 6 mg to achieve optimal effectiveness, while minimizing any intolerance to the drug. Treatment with risperidone or placebo tablets continues for 3 weeks. The primary measure of efficacy is the change from baseline to the end of treatment in the Young Mania Rating Scale (YMRS); Other efficacy assessments include the changes in: the Clinical Global Impression-Severity of Illness (CGI-S) scale; Global Assessment Scale (GAS), which assesses the patient's level of functioning; and the Positive and Negative Syndromes Scale (PANSS), a scale for measuring psychotic symptoms. Safety assessments include the incidence of adverse events throughout the study; measurement of vital signs (temperature, pulse, blood pressure) and evaluation of the presence and severity of extrapyramidal symptoms by the Extrapyramidal Symptom Rating Scale (ESRS) at specified intervals; and clinical laboratory tests (hematology, biochemistry, urinalysis) at the start and end of the study. The study hypothesis is that daily treatment with risperidone is more effective than placebo, as measured by Young Mania Rating Scale scores, in the treatment of the manic phase of Bipolar I Disorder. Risperidone oral tablets, 1 mg, taken once daily in the evening; dose of 3 mg on Day 1; dose range of 2 - 4 mg on Day 2; dose range 1 - 5 mg on Day 3; dose range 1 - 6 mg on Days 4 - 21. Doses may be increased or decreased at investigator's discretion. ;


Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double-Blind, Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT00249236
Study type Interventional
Source Johnson & Johnson Pharmaceutical Research & Development, L.L.C.
Contact
Status Completed
Phase Phase 3
Start date March 2001
Completion date December 2001

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