Journal
JOURNAL OF CLINICAL PSYCHIATRY
Volume 77, Issue 3, Pages 371-+Publisher
PHYSICIANS POSTGRADUATE PRESS
DOI: 10.4088/JCP.15m10070
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Funding
- Forest Laboratories, LLC (Jersey City, New Jersey), an Allergan affiliate
- Gedeon Richter Plc (Budapest, Hungary)
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Background: Cariprazine is an atypical antipsychotic currently under investigation as adjunctive therapy in patients with major depressive disorder (MDD) who have inadequate response to standard antidepressant therapy. Method: A randomized, double-blind, placebo-controlled, flexible-dose study was conducted from December 2011 to December 2013 in adults who met DSM-IV-TR criteria for MDD and had an inadequate antidepressant response. Eligible patients were randomized to 8-week adjunctive treatment with placebo (n = 269), cariprazine 1-2 mg/d (n = 274), or cariprazine 2-4.5 mg/d (n = 276). The primary efficacy parameter was change from baseline to week 8 in Montgomery-Asberg Depression Rating Scale (MADRS) total score; P values were adjusted for multiple comparisons. Safety assessments included adverse events, clinical laboratory tests, vital signs, electrocardiograms (ECGs), and suicidality. Results: Compared with placebo, reduction in MADRS total score at week 8 was significantly greater with adjunctive cariprazine 2-4.5 mg/d (least squares mean difference [LSMD] = -2.2; adjusted P =.0114), but not with cariprazine 1-2 mg/d (LSMD = -0.9; adjusted P =.2404). Significant LSMDs for MADRS total score change were detected at all earlier study visits (weeks 2, 4, 6) in the 2-to 4.5-mg/d group and at weeks 2 and 4 in the 1to 2-mg/d group (all P values < .05). Treatment-emergent adverse events reported in = 10% of patients in either cariprazine dosage group were akathisia (22.3%), insomnia (13.6%), and nausea (12.8%) (all in 2-to 4.5-mg/d group). Mean changes in metabolic parameters, vital signs, and ECG parameters were generally similar between groups. No suicide-related adverse events were reported. Discussion: These results show that adjunctive cariprazine 2-4.5 mg/d was effective and generally well tolerated in adults with MDD who had inadequate responses to standard antidepressants. Further clinical studies to confirm these results are warranted. (C) Copyright 2016 Physicians Postgraduate Press, Inc.
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