Safety and efficacy from a 6-week double-blind study and a 52-week open-label extension of aripiprazole in adolescents with schizophrenia in Japan

Psychiatry and Clinical Neurosciences
Hideo MatsumotoYoshihiro Tadori

Abstract

The purpose of this study was to evaluate the safety and efficacy of aripiprazole in adolescents with schizophrenia (SCZ) in Japan. In a 6-week, randomized, double-blind, dose-comparison study, adolescents (aged 13-17 years) with SCZ were randomized to receive aripiprazole 2, 6-12, or 24-30 mg/day. Patients who completed the 6-week study participated in a 52-week, flexible-dose, open-label extension (OLE) study of aripiprazole (initial dose: 2 mg/day, maintenance dose: 6-24 mg/day, maximum dose: 30 mg/day). In the 6-week study, the percentage of patients completing treatment was: 77.1% (27/35) for 2 mg/day; 80.0% (24/30) for 6-12 mg/day; and 85.4% (35/41) for 24-30 mg/day. The least squares mean change in the Positive and Negative Syndrome Scale (PANSS) total score from baseline to endpoint (primary efficacy endpoint, last observation carried forward) was -19.6 for 2 mg/day, -16.5 for 6-12 mg/day, and - 21.6 for 24-30 mg/day. The most common (≥20% patients in any group) treatment-emergent adverse events (TEAE) were nausea, akathisia, insomnia, and somnolence. Most TEAE were mild or moderate in severity. There were no deaths. In the OLE, 60.3% (41/68) of patients completed treatment, and the PANSS total score decreased by -7.9 f...Continue Reading

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