Safety and effectiveness of lurasidone for the treatment of schizophrenia in Asian patients: Results of a 26-week open-label extension study

INTRODUCTION: This study was designed to evaluate the long-term safety and effectiveness of lurasidone in the treatment of schizophrenia among Asian patients.

METHODS: Patients (N = 281) with schizophrenia who had completed a randomized, double-blind (DB), 6-week comparison of lurasidone (40 and 80 mg/day) and placebo were enrolled in a 26-week extension study in which all patients received open-label (OL), flexible doses of lurasidone (40 or 80 mg/day). Effectiveness was measured using the Positive and Negative Syndrome Scale (PANSS) scale.

RESULTS: Fifty-seven percent of patients completed the OL extension study; 16.7% discontinued early due to lack of effectiveness; and 10.3% due to adverse events. The most common adverse events were insomnia (11.3%), akathisia (11.0%), and nasopharyngitis (10.6%). Adverse events related to weight gain, metabolic parameters, prolactin, and ECG measures were uncommon. Mean change in the PANSS total score from the DB baseline to OL endpoint was -28.4, with mean improvement of -7.5 observed from baseline to OL endpoint, and with a PANSS responder rate of 73.7%.

DISCUSSION: The results of the current 26-week extension study found lurasidone to be a generally safe, well-tolerated, and effective long-term treatment for schizophrenia in Asian patients.