EPA-0870 – Efficacy and safety of cariprazine in patients with acute exacerbation of schizophrenia: results of two phase III trials

Abstract

Introduction Cariprazine is a potent dopamine D3 and D2 receptor partial agonist with preferential binding to D3 receptors. Objective Summarize data from 2 Phase III, randomized, double-blind (6-week), placebo-controlled trials of fixed-dose cariprazine (3mg/d and 6mg/d, NCT01104766) and flexible-dose cariprazine (3–6mg/d and 6–9mg/d, NCT01104779) in adults with acute exacerbation of schizophrenia. Aims Evaluate the efficacy, safety, and tolerability of cariprazine in schizophrenia. Methods Primary and secondary efficacy parameters were change from baseline to Week 6 in Positive and Negative Syndrome Scale (PANSS) and Clinical Global Impressions-Severity (CGI-S), respectively, and were analyzed using a mixed-effects model for repeated measures. Results Randomized patient populations: 617 (NCT01104766; 153 placebo, 155 cariprazine 3mg/d, 157 cariprazine 6mg/d, 152 aripiprazole) and 446 (NCT01104779; 147 placebo, 151 cariprazine 3–6mg/d, 148 cariprazine 6–9mg/d). Improvement from baseline to Week 6 on PANSS total scores was significantly greater with cariprazine vs placebo: least square mean difference (LSMD) was −6.0 (3mg/d, P=.0044), −6.8 (3–6mg/d, P=.0029), −8.8 (6mg/d, P Conclusion Cariprazine was effective and generally well tolerated in the treatment of schizophrenia.