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Article Abstract
The successful treatment of schizophrenia entails improvement across a spectrum of symptoms. The aim of this analysis was to characterize the short- and long-term effects of brexpiprazole on Positive and Negative Syndrome Scale (PANSS) 'Marder factors.' Data were included from three 6-week, randomized, double-blind, placebo-controlled studies; a 52-week, randomized, double-blind, placebo-controlled maintenance treatment study; and two 52-week open-label extension (OLEx) studies-all in schizophrenia (DSM-IV-TR criteria). Patients receiving oral brexpiprazole were dosed at 2-4 mg/day (short-term studies) or 1-4 mg/day (long-term studies). At Week 6, least squares mean differences (LSMDs, with 95% confidence limits [CLs]) for brexpiprazole ( = 868) vs placebo ( = 517) were: Positive symptoms: -1.55 (-2.30, -0.80), < .0001, Cohen's effect size (ES) = 0.27; Negative symptoms: -1.12 (-1.63, -0.61), < .0001, ES = 0.29; Disorganized thought: -1.26 (-1.78, -0.74), < .0001, ES = 0.32; Uncontrolled hostility/excitement: -0.76 (-1.15, -0.37), = .0002, ES = 0.26; Anxiety/ depression: -0.56 (-0.91, -0.22), = .0014, ES = 0.22. At last visit of the maintenance study, LSMDs (95% CLs) for brexpiprazole ( = 96) vs placebo ( = 104) were: Positive symptoms: -3.44 (-4.99, -1.89), < .0001, ES = 0.62; Negative symptoms: -1.23 (-2.52, 0.07), = .063, ES = 0.27; Disorganized thought: -1.69 (-2.81, -0.56), = .0035, ES = 0.42; Uncontrolled hostility/excitement: -1.26 (-2.12, -0.39), = .0046, ES = 0.41; Anxiety/depression: -0.72 (-1.47, 0.03), = .061, ES = 0.27. In the OLEx studies, improvements were maintained over 58 (6 + 52) weeks of brexpiprazole treatment. In conclusion, these data suggest that brexpiprazole treats the continuum of schizophrenia symptoms, in the short- and long-term. Trial Registration: Data used in this analysis came from ClinicalTrials.gov identifiers: NCT01396421, NCT01393613, NCT01810380, NCT01668797, NCT01397786, NCT01810783.
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| http://dx.doi.org/10.1093/schizbullopen/sgab014 | DOI Listing |
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