alexa Efficacy and safety of adjunctive brexpiprazole 2 mg in major depressive disorder: a phase 3, randomized, placebo-controlled study in patients with inadequate response to antidepressants.


Journal of Depression and Anxiety

Author(s): Thase ME, Youakim JM, Skuban A, Hobart M, Augustine C,

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Abstract OBJECTIVE: To assess the efficacy, tolerability, and safety of brexpiprazole as adjunctive therapy to antidepressant treatments (ADTs) in adults with major depressive disorder (as defined by DSM-IV-TR criteria) and inadequate response to ADTs. METHOD: Patients with historical inadequate response to 1-3 ADTs were enrolled. All patients entered a prospective 8-week phase on physician-determined, open-label ADT. Those with inadequate response were randomized to ADT + brexpiprazole 2 mg/d or ADT + placebo for 6 weeks. The study was conducted between July 2011 and May 2013. The primary efficacy end point was change from baseline to week 6 in Montgomery-Asberg Depression Rating Scale (MADRS) total score. The key secondary end point was change from baseline to week 6 in Sheehan Disability Scale (SDS) mean score. The efficacy population comprised all patients who had ≥ 1 dose of study drug in the double-blind phase and both baseline and ≥ 1 postrandomization MADRS scores. The efficacy population per final protocol included patients from the efficacy population who met amended randomization criteria of inadequate response throughout prospective treatment. RESULTS: Brexpiprazole (n = 175) reduced mean MADRS total score versus placebo (n = 178) at week 6 in the efficacy population per final protocol (-8.36 vs -5.15, P = .0002). Brexpiprazole improved SDS mean score versus placebo (-1.35 vs -0.89, P = .0349). The most common treatment-related adverse events were weight gain (brexpiprazole, 8.0\%; placebo, 3.1\%) and akathisia (7.4\% vs 1.0\%). CONCLUSIONS: Adjunctive brexpiprazole therapy demonstrated efficacy and was well tolerated in patients with major depressive disorder and inadequate response to ADTs. TRIAL REGISTRATION: identifier: NCT01360645. © Copyright 2015 Physicians Postgraduate Press, Inc. This article was published in J Clin Psychiatry and referenced in Journal of Depression and Anxiety

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