Journal of affective disorders · 2012
Effect of asenapine on manic and depressive symptoms in bipolar I patients with mixed episodes: results from post hoc analyses.
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Azorin J M, Sapin C, Weiller E
Аннотация
BACKGROUND: The efficacy of agents useful for mania is largely unproven in patients with mixed episodes.
METHODS: The efficacy of asenapine in the treatment of mixed episodes was assessed using post hoc analyses on pooled data from two identically designed 3-week, randomized, double-blind, flexible dose, placebo- and olanzapine-controlled trials and their 9-week, double-blind olanzapine-controlled extension study. Efficacy was measured by changes on Young Mania Rating Scale (YMRS) and Montgomery-Åsberg Depression Rating Scale (MADRS) total scores, and was analysed through analysis of covariance on observed cases of the intent-to-treat dataset.
RESULTS: In the intent-to-treat population, 295 patients had a DSM-IV-TR mixed episode (placebo: 66; olanzapine: 122; asenapine: 107) in the 3-week trials. Of these, 102 patients (olanzapine: 56; asenapine: 46) entered the 9-week extension study. At week 3, decreases in YMRS and MADRS total scores, were significantly (p<0.01) greater with asenapine (YMRS: -15.0; MADRS: -8.2) versus placebo (YMRS: -11.5; MADRS: -4.5); olanzapine did not separate from placebo (YMRS: -13.3; MADRS: -6.5). At week 12, further decreases in YMRS and MADRS total scores were observed with asenapine (YMRS: -22.4; MADRS: -11.9); non-statistically different from olanzapine (YMRS: -20.2; MADRS: -7.9).
LIMITATIONS: Results are from post hoc analyses of trials that were not designed to specifically evaluate mixed episodes.
CONCLUSIONS: These exploratory analyses provide supportive evidence for the efficacy of asenapine in treating the associated symptoms of mania and depression in bipolar I patients with mixed episodes.
METHODS: The efficacy of asenapine in the treatment of mixed episodes was assessed using post hoc analyses on pooled data from two identically designed 3-week, randomized, double-blind, flexible dose, placebo- and olanzapine-controlled trials and their 9-week, double-blind olanzapine-controlled extension study. Efficacy was measured by changes on Young Mania Rating Scale (YMRS) and Montgomery-Åsberg Depression Rating Scale (MADRS) total scores, and was analysed through analysis of covariance on observed cases of the intent-to-treat dataset.
RESULTS: In the intent-to-treat population, 295 patients had a DSM-IV-TR mixed episode (placebo: 66; olanzapine: 122; asenapine: 107) in the 3-week trials. Of these, 102 patients (olanzapine: 56; asenapine: 46) entered the 9-week extension study. At week 3, decreases in YMRS and MADRS total scores, were significantly (p<0.01) greater with asenapine (YMRS: -15.0; MADRS: -8.2) versus placebo (YMRS: -11.5; MADRS: -4.5); olanzapine did not separate from placebo (YMRS: -13.3; MADRS: -6.5). At week 12, further decreases in YMRS and MADRS total scores were observed with asenapine (YMRS: -22.4; MADRS: -11.9); non-statistically different from olanzapine (YMRS: -20.2; MADRS: -7.9).
LIMITATIONS: Results are from post hoc analyses of trials that were not designed to specifically evaluate mixed episodes.
CONCLUSIONS: These exploratory analyses provide supportive evidence for the efficacy of asenapine in treating the associated symptoms of mania and depression in bipolar I patients with mixed episodes.