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Abstract
In this study, designed to evaluate the efficacy of lurasidone as adjunctive therapy with lithium or valproate, patients with bipolar I depression were randomized to 6 weeks of double-blind treatment with lurasidone (N = 180) or placebo (N = 176), added to background treatment with lithium or valproate. All patients were treated with lithium or valproate for a minimum of 4 weeks prior to screening. This was confirmed either by prospective treatment after study enrolment (run-in cohort), or retrospectively, with blood levels of lithium and valproate at screening (non-run-in cohort). Primary and key secondary endpoints were change from baseline to week 6 on the Montgomery-Åsberg Depression Rating Scale (MADRS) and depression severity score on the Clinical Global Impressions scale for use in bipolar illness (CGI-BP-S), respectively. Treatment with lurasidone was associated with non-significant improvement at week 6 vs. placebo for the MADRS total score (-11.8 vs -10.4; P = 0.176), and the CGI-BP-S score (-1.36 vs -1.13; P = 0.095). Significant separation from placebo was observed from weeks 2-5 for the MADRS and weeks 3-5 for the CGI-BP-S. Improvement in the placebo-subtracted MADRS total score was notably larger at week 6 for the non-run-in cohort compared to the run-in cohort (LS mean difference in endpoint change scores, -4.6; P = 0.009). Adverse events most frequently reported for lurasidone were akathisia, somnolence, and extrapyramidal side effects. In conclusion, lurasidone adjunctive with lithium or valproate demonstrated significant improvement in depressive symptoms based on the MADRS from weeks 2-5 but not at the primary week 6 endpoint.
View details for DOI 10.1016/j.jpsychires.2016.03.012
View details for Web of Science ID 000376700900012
View details for PubMedID 27089521