A Study on the Safety and Efficacy of Topiramate in the Treatment of Patients With Bipolar I Disorder
The primary purpose of this study is to evaluate the safety and efficacy of topiramate compared with placebo in the treatment of acute manic or mixed episodes in patients with Bipolar I Disorder.
|Study Design:||Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Primary Purpose: Treatment
|Official Title:||A Randomized, Double-Blind, Multicenter, Placebo-Controlled 12-Week Study of the Safety and Efficacy of Topiramate in Patients With Acute Manic or Mixed Episodes of Bipolar I Disorder With an Optional Open-Label Extension|
- Change from baseline to Day 21 in the total Young Mania Rating Scale (YMRS) score.
- Changes from baseline to Day 21 and Week 12 in the scores of CGI, MADRS, BPRS, and GAS. Response to treatment, indicated by no longer meeting DSM-IV criteria for manic/mixed episode. Incidence of adverse events monitored throughout the study.
|Study Start Date:||July 2001|
|Study Completion Date:||November 2002|
This is a randomized, double-blind, placebo-controlled study to evaluate the safety and efficacy of topiramate (400 milligrams/day) compared with placebo in the treatment of acute manic or mixed episodes in patients with Biplar I Disorder. In addition, a third group of patients will be treated with lithium (1500milligrams/day) as a comparator drug. The trial consists of 3 phases: a screening period; double-blind treatment for 12 weeks; and an optional open-label period of at least 6 months. Efficacy assessments include the change from baseline to Day 21 in the Young Mania Rating Scale (YMRS) score. Also included as efficacy assessments during the 12 week study are the Clinical Global Impressions (CGI) scale, Global Assessment Scale (GAS), Montgomery-Åsberg Depression Rating Scale (MADRS), Brief Psychiatric Rating Scale (BPRS), and health-related quality of life measures at specified time intervals. Safety assessments include evaluation of adverse events throughout the study, rate of withdrawal from the study due to adverse events, and vital signs (blood pressure and pulse) througout the study, as well as changes in clinical laboratory tests (hematology, chemistry, urinalysis), electrocardiograms (ECGs), and physical examinations at specified times. The study hypothesis is that the change from baseline in the total Young Mania Rating Scale (YMSR) score at Day 21 will be significantly better for the topiramate groups than for the placebo group and that the study drug will be well tolerated by the patients. Topiramate oral capsule will be increased from once daily (50mg) to 3 times daily up to target total daily dose 400mg, maintained through Week 12. Lithium oral capsules will be increased from once daily (300mg) to 3 times daily up to target total daily dose of 1500mg, maintained through Week 12.
|Study Director:||Johnson & Johnson Pharmaceutical Research & Development, L.L. C. Clinical Trial||Johnson & Johnson Pharmaceutical Research & Development, L.L.C.|