A Multicenter, Uncontrolled, Open-label Trial to Investigate the Long-term Tolerability, Safety, and Efficacy of Brexpiprazole Once-weekly (QW) Formulation Administered Once Weekly for 52 Weeks in Patients With Schizophrenia

Otsuka Pharmaceutical Co., Ltd.1 site in 1 country190 target enrollmentMay 31, 2022

ConditionsSchizophrenia

InterventionsOPC-34712FUM/ Brexpiprazole fumarate

Overview

Phase: Phase 3
Intervention: OPC-34712FUM/ Brexpiprazole fumarate
Conditions: Schizophrenia
Sponsor: Otsuka Pharmaceutical Co., Ltd.
Enrollment: 190
Locations: 1
Primary Endpoint: The frequency of Adverse Events
Status: Active, not recruiting
Last Updated: last year

Overview Investigators Eligibility Criteria Arms & Interventions Outcomes Sites Similar Trials

Overview

Brief Summary

Confirm the tolerability and safety of long-term administration of the brexpiprazole QW formulation in patients with schizophrenia

Registry

clinicaltrials.gov

Start Date

May 31, 2022

End Date

September 2025

Last Updated

last year

Study Type

Interventional

Study Design

Single Group

Sex

All

Investigators

Sponsor

Otsuka Pharmaceutical Co., Ltd.

Responsible Party

Sponsor

Eligibility Criteria

Inclusion Criteria

•New Subjects
•Patients who have been fully informed of and understand the objectives, procedures, risks, and expected medicinal benefits of the trial and are able to provide written informed consent prior to initiation of any trial-related procedures
•Patients at least 18 years of age and below the age of 75 at the time of informed consent
•Patients with a diagnosis of schizophrenia based on DSM-5® at the time of informed consent
•Patients who are receiving treatment with antipsychotics (other than clozapine), who are considered to require maintenance therapy using antipsychotics, and for whom monotherapy with the brexpiprazole QW formulation and outpatient management are considered feasible. Hospitalization for washout from any previously used drugs specified as prohibited concomitant drugs or hospitalization for symptom management immediately after the start of IMP administration will be allowed at the discretion of the investigator. Hospitalization for social reasons (eg, homelessness or need for shelter that is unrelated to the patient's psychological condition) is permitted.
•Patients for whom switching to monotherapy with the brexpiprazole QW formulation using an add-on and taper-off method within 4 weeks is considered feasible
•Patients who are able to begin monotherapy with the brexpiprazole QW formulation (at an initial dose of 48 mg/week) Rollover Subjects
•Patients who have been fully informed of and understand the objectives, procedures, risks, and expected medicinal benefits of the trial and are able to provide written informed consent prior to initiation of any trial-related procedures
•Patients who have completed the 6-week double-blind treatment period in Trial 331-102-00062
•Patients for whom monotherapy with the brexpiprazole QW formulation and outpatient management are considered feasible. Hospitalization for symptom management immediately after the start of IMP administration will be allowed at the discretion of the investigator. Hospitalization for social reasons (eg, homelessness or need for shelter that is unrelated to the patient's psychological condition) is permitted.

Exclusion Criteria

•New Subjects
•Patients who are considered resistant/refractory to antipsychotic treatment Patients who are
•Patients who are considered resistant/refractory to antipsychotic treatment Patients who are "unresponsive to medication with 2 or more antipsychotics at effective doses for a sufficiently long duration (6 weeks)" will be deemed resistant/refractory to antipsychotic treatment.
•Patients experiencing acute depressive symptoms within 30 days prior to informed consent that, in the judgment of the investigator, require treatment with an antidepressant
•Patients who fall under any of the following criteria regarding suicidal ideation and suicidal behavior
•Patients who answered "yes" to Question 4 "Active Suicidal Ideation with Some Intent to Act, without Specific Plan" or Question 5 "Active Suicidal Ideation with Specific Plan and Intent" regarding Columbia-Suicide Severity Rating Scale (C-SSRS) suicidal ideation at screening (for the past 6 months) or at baseline (since the last assessment)
•Patients who exhibited suicidal behavior on C-SSRS at screening (for the past 2 years) or at baseline (since the last assessment)
•Patients who present a serious risk of suicide based on the judgment of the investigator
•Patients presenting tardive dyskinesia at the time of informed consent, as determined by a score of 3 (moderate) or 4 (severe) for Item 8 (severity of abnormal movements) of the Abnormal Involuntary Movement Scale (AIMS) at screening or at baseline
•Patients with a score of 5 (severe akathisia) in the Barnes Akathisia Rating Scale (BARS) global clinical assessment of akathisia at screening or at baseline

Arms & Interventions

Rollover subjects

For rollover subjects, treatment will begin with oral administration of 1 tablet of the brexpiprazole QW formulation at 24 mg. From Week 1 onward, 2 tablets of brexpiprazole QW formulation 24 mg (48 mg/week) will be orally administered for 51 weeks.

Intervention: OPC-34712FUM/ Brexpiprazole fumarate

New subjects

In medication switching period, treatment will begin with oral administration of 1 tablet of the brexpiprazole QW formulation 24 mg, and the dose of the other antipsychotics will be gradually reduced, finally switching to monotherapy with 2 tablets of brexpiprazole QW formulation 24 mg (48 mg/week) by Week 4. In treatment period, 2 tablets of brexpiprazole QW formulation 24 mg (48 mg/week) will be orally administered for 52 weeks.

Intervention: OPC-34712FUM/ Brexpiprazole fumarate