Efficacy, tolerability, and safety of lurasidone for acute schizophrenia: A systematic review and network meta‐analysis of phase 3 trials in Japan

Abstract Introduction Considering that the efficacy results of the Japan lurasidone phase 3 trials for acute schizophrenia were inconsistent, we conducted a systematic review and a random‐effect model network meta‐analysis of those trials to examine whether lurasidone was beneficial for the treatmen...

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Main Authors: Taro Kishi, Tadashi Nosaka, Kenji Sakuma, Makoto Okuya, Nakao Iwata
Format: Article
Language:English
Published: Wiley 2020-09-01
Series:Neuropsychopharmacology Reports
Subjects:
Online Access:https://doi.org/10.1002/npr2.12131
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author Taro Kishi
Tadashi Nosaka
Kenji Sakuma
Makoto Okuya
Nakao Iwata
author_facet Taro Kishi
Tadashi Nosaka
Kenji Sakuma
Makoto Okuya
Nakao Iwata
author_sort Taro Kishi
collection DOAJ
description Abstract Introduction Considering that the efficacy results of the Japan lurasidone phase 3 trials for acute schizophrenia were inconsistent, we conducted a systematic review and a random‐effect model network meta‐analysis of those trials to examine whether lurasidone was beneficial for the treatment of Japanese patients with acute schizophrenia. Methods The study included the double‐blind, randomized trial in Japan that included patients with acute schizophrenia. Efficacy outcomes were improvement of the Positive and Negative Syndrome Scale total score (PANSS‐T, primary), positive (PANSS‐P), negative (PANSS‐N), and general (PANSS‐G) subscale scores; and Clinical Global Impression‐Severity Scale (CGI‐S) score and response rate. Other outcomes were discontinuation rates and incidence of individual adverse events. Results We included four studies (n = 1,608). Although both lurasidone 40 mg/d (LUR40) and 80 mg/d (LUR80) outperformed placebo in PANSS‐T [standardized mean difference (95% credible interval): LUR40 = −0.298 (−0.420, −0.176), LUR80 = −0.170 (−0.320, −0.019)], PANSS‐P, and CGI‐S scores, LUR40 but not LUR80 outperformed placebo in PANSS‐N and PANSS‐G scores and response rate. LUR40 outperformed LUR80 regarding PANSS‐G score. Both LUR40 and LUR80 were associated with a higher incidence of akathisia, somnolence, and increased body weight compared with placebo. Compared with placebo, LUR40 was associated with a higher incidence of weight gain (≥7%), and LUR80 was associated with a higher incidence of dystonia and weight loss (≥7%) and higher Drug‐Induced Extrapyramidal Symptoms Scale score. Conclusions Both LUR40 and LUR80 improved overall symptoms in Japanese patients with acute schizophrenia. However, LUR80 seemed to have a risk of extrapyramidal symptoms.
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spelling doaj.art-9c9fc0bd576d42428a3a705d8735b5642023-09-06T08:36:14ZengWileyNeuropsychopharmacology Reports2574-173X2020-09-0140331432210.1002/npr2.12131Efficacy, tolerability, and safety of lurasidone for acute schizophrenia: A systematic review and network meta‐analysis of phase 3 trials in JapanTaro Kishi0Tadashi Nosaka1Kenji Sakuma2Makoto Okuya3Nakao Iwata4Department of Psychiatry Fujita Health University School of Medicine Toyoake JapanMedical Affairs Sumitomo Dainippon Pharma Co., Ltd. Chuo‐ku JapanDepartment of Psychiatry Fujita Health University School of Medicine Toyoake JapanDepartment of Psychiatry Fujita Health University School of Medicine Toyoake JapanDepartment of Psychiatry Fujita Health University School of Medicine Toyoake JapanAbstract Introduction Considering that the efficacy results of the Japan lurasidone phase 3 trials for acute schizophrenia were inconsistent, we conducted a systematic review and a random‐effect model network meta‐analysis of those trials to examine whether lurasidone was beneficial for the treatment of Japanese patients with acute schizophrenia. Methods The study included the double‐blind, randomized trial in Japan that included patients with acute schizophrenia. Efficacy outcomes were improvement of the Positive and Negative Syndrome Scale total score (PANSS‐T, primary), positive (PANSS‐P), negative (PANSS‐N), and general (PANSS‐G) subscale scores; and Clinical Global Impression‐Severity Scale (CGI‐S) score and response rate. Other outcomes were discontinuation rates and incidence of individual adverse events. Results We included four studies (n = 1,608). Although both lurasidone 40 mg/d (LUR40) and 80 mg/d (LUR80) outperformed placebo in PANSS‐T [standardized mean difference (95% credible interval): LUR40 = −0.298 (−0.420, −0.176), LUR80 = −0.170 (−0.320, −0.019)], PANSS‐P, and CGI‐S scores, LUR40 but not LUR80 outperformed placebo in PANSS‐N and PANSS‐G scores and response rate. LUR40 outperformed LUR80 regarding PANSS‐G score. Both LUR40 and LUR80 were associated with a higher incidence of akathisia, somnolence, and increased body weight compared with placebo. Compared with placebo, LUR40 was associated with a higher incidence of weight gain (≥7%), and LUR80 was associated with a higher incidence of dystonia and weight loss (≥7%) and higher Drug‐Induced Extrapyramidal Symptoms Scale score. Conclusions Both LUR40 and LUR80 improved overall symptoms in Japanese patients with acute schizophrenia. However, LUR80 seemed to have a risk of extrapyramidal symptoms.https://doi.org/10.1002/npr2.12131acute schizophreniaefficacy/safety/tolerabilityJapan clinical trialsystematic review and network meta‐analysis
spellingShingle Taro Kishi
Tadashi Nosaka
Kenji Sakuma
Makoto Okuya
Nakao Iwata
Efficacy, tolerability, and safety of lurasidone for acute schizophrenia: A systematic review and network meta‐analysis of phase 3 trials in Japan
Neuropsychopharmacology Reports
acute schizophrenia
efficacy/safety/tolerability
Japan clinical trial
systematic review and network meta‐analysis
title Efficacy, tolerability, and safety of lurasidone for acute schizophrenia: A systematic review and network meta‐analysis of phase 3 trials in Japan
title_full Efficacy, tolerability, and safety of lurasidone for acute schizophrenia: A systematic review and network meta‐analysis of phase 3 trials in Japan
title_fullStr Efficacy, tolerability, and safety of lurasidone for acute schizophrenia: A systematic review and network meta‐analysis of phase 3 trials in Japan
title_full_unstemmed Efficacy, tolerability, and safety of lurasidone for acute schizophrenia: A systematic review and network meta‐analysis of phase 3 trials in Japan
title_short Efficacy, tolerability, and safety of lurasidone for acute schizophrenia: A systematic review and network meta‐analysis of phase 3 trials in Japan
title_sort efficacy tolerability and safety of lurasidone for acute schizophrenia a systematic review and network meta analysis of phase 3 trials in japan
topic acute schizophrenia
efficacy/safety/tolerability
Japan clinical trial
systematic review and network meta‐analysis
url https://doi.org/10.1002/npr2.12131
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