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Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't
Ziprasidone plus a mood stabilizer in subjects with bipolar I disorder: a 6-month, randomized, placebo-controlled, double-blind trial.
Journal of Clinical Psychiatry 2010 Februrary
OBJECTIVE: To evaluate the efficacy and safety of ziprasidone adjunctive to a mood stabilizer for the maintenance treatment of bipolar mania.
METHOD: Subjects with DSM-IV bipolar I disorder with a Mania Rating Scale score > or = 14 were enrolled. Subjects achieving > or = 8 consecutive weeks of stability with open-label ziprasidone (80-160 mg/d) and lithium or valproate (period 1) were randomly assigned in the 6-month, double-blind maintenance period (period 2) to ziprasidone plus mood stabilizer or placebo plus mood stabilizer. The primary and key secondary end points were the time to intervention for a mood episode and time to discontinuation for any reason, respectively. Inferential analysis was performed using a Kaplan-Meier product-limit estimator (log-rank test). The study was conducted from December 2005 to May 2008.
RESULTS: A total of 127 and 113 subjects were randomly assigned to ziprasidone and placebo, respectively. Intervention for a mood episode was required in 19.7% and 32.4% of ziprasidone and placebo subjects, respectively. The time to intervention for a mood episode was significantly longer for ziprasidone than placebo (P = .0104). The median time to intervention for a mood episode among those requiring such an intervention (n = 61) was 43.0 days for ziprasidone versus 26.5 days for placebo. The time to discontinuation for any reason was significantly longer for ziprasidone (P = .0047). Adjunctive ziprasidone treatment was well tolerated. Among treatment-emergent adverse events occurring in > or = 5% of subjects in either treatment group during period 2, only tremor occurred more frequently in the ziprasidone versus placebo group (6.3% vs 3.6%).
CONCLUSIONS: Ziprasidone is an effective, safe, and well-tolerated adjunctive treatment with a mood stabilizer for long-term maintenance treatment of bipolar mania.
TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT00280566.
METHOD: Subjects with DSM-IV bipolar I disorder with a Mania Rating Scale score > or = 14 were enrolled. Subjects achieving > or = 8 consecutive weeks of stability with open-label ziprasidone (80-160 mg/d) and lithium or valproate (period 1) were randomly assigned in the 6-month, double-blind maintenance period (period 2) to ziprasidone plus mood stabilizer or placebo plus mood stabilizer. The primary and key secondary end points were the time to intervention for a mood episode and time to discontinuation for any reason, respectively. Inferential analysis was performed using a Kaplan-Meier product-limit estimator (log-rank test). The study was conducted from December 2005 to May 2008.
RESULTS: A total of 127 and 113 subjects were randomly assigned to ziprasidone and placebo, respectively. Intervention for a mood episode was required in 19.7% and 32.4% of ziprasidone and placebo subjects, respectively. The time to intervention for a mood episode was significantly longer for ziprasidone than placebo (P = .0104). The median time to intervention for a mood episode among those requiring such an intervention (n = 61) was 43.0 days for ziprasidone versus 26.5 days for placebo. The time to discontinuation for any reason was significantly longer for ziprasidone (P = .0047). Adjunctive ziprasidone treatment was well tolerated. Among treatment-emergent adverse events occurring in > or = 5% of subjects in either treatment group during period 2, only tremor occurred more frequently in the ziprasidone versus placebo group (6.3% vs 3.6%).
CONCLUSIONS: Ziprasidone is an effective, safe, and well-tolerated adjunctive treatment with a mood stabilizer for long-term maintenance treatment of bipolar mania.
TRIAL REGISTRATION: clinicaltrials.gov Identifier: NCT00280566.
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