A phase 3 trial of brexpiprazole once-weekly (QW) formulation in patients with acute schizophrenia

Phase 1

Recruiting

Conditions: Acute Schizophrenia
Therapeutic area: Psychiatry and Psychology [F] - Mental Disorders [F03]

Registration Number: CTIS2022-500583-36-00

Lead Sponsor: Otsuka Pharmaceutical Co. Ltd.

Brief Summary: Not available

Detailed Description: Not available

Recruitment & Eligibility

Status: Recruiting

Sex: All

Target Recruitment: 450

Inclusion Criteria

Patients at least 18 years of age and below the age of 65 at the time of informed consent, Patients with a diagnosis of schizophrenia based on DSM-5® (295.90) (multiple episodes, currently in acute episode) and confirmed by the Mini International Neuropsychiatric Interview (M.I.N.I.) at the time of informed consent, Patients who are hospitalized, or judged to require hospitalization, for acute relapse of schizophrenia at the time of informed consent, Patients whose current episode developed within 2 months prior to screening, Patients with acute exacerbation of psychotic symptoms and a marked decline in daily functioning who meet all of the following criteria when the placebo administration period begins: (a) PANSS total score of = 70 (b) Scores of = 4 (moderate) for at least 2 of 4 PANSS items (Hallucinatory Behavior, Unusual Thought Content, Conceptual Disorganization, Suspiciousness/Persecution) (c) CGI-S score of = 4 (moderately ill), Patients who were treated with antipsychotics at appropriate doses (recommended doses for the treatment of schizophrenia indicated in the package insert of the drug provided by the manufacturer/distributor) for appropriate durations (at least 6 weeks) and who are considered to have responded to the antipsychotics (excluding clozapine) within 12 months prior to informed consent, Patients who experienced a recurrence or exacerbation of symptoms during an antipsychotic-free period (excluding the current episode), Patients who are able to provide written informed consent prior to initiation of any trial-related procedures

Exclusion Criteria

Patients presenting a first episode of schizophrenia based on the clinical judgment of the investigator, Patients who have met the DSM-5® diagnostic criteria for substance-related or addictive disorder, including alcohol and benzodiazepines but excluding caffeine and tobacco, within 180 days before commencement of investigational medicinal product (IMP) administration, Patients who have a clinically significant neurological, hepatic, renal, metabolic, hematological, immunological, cardiovascular, pulmonary, or gastrointestinal disorder. Medical conditions that are minor or well-controlled may be considered acceptable if the condition does not interfere with safety and efficacy assessments., Patients with known hypersensitivity or intolerance to brexpiprazole or patients with confirmed resistance to brexpiprazole therapy. Patients who have received brexpiprazole to treat the current episode., Patients judged by the investigator to be unsuitable for participation in the trial, 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 who have a history of treatment with clozapine for schizophrenia, 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 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 AIMS at screening or at baseline, Patients with a score of 5 (severe akathisia) in the BARS global clinical assessment of akathisia at screening or at baseline, Patients who meet either of the following criteria between 30 days before screening and the start of screening (a) Received 2 or more antipsychotics, each at doses equivalent to = 600 mg/day of chlorpromazine (b) Received a mean daily dose equivalent to > 800 mg/day*,** of chlorpromazine *If multiple antipsychotics are taken in the same day, this is to be the combined equivalent dose. **This does not include administration of antipsychotic medication at doses equivalent to less than 100 mg/day of chlorpromazine, which are not expected to have any antipsychotic effect. Chlorpromazine equivalent doses are based on Equivalent Conversion Table for Antipsychotics, as specified separately., Patients with a diagnosis of a concurrent mental disorder besides schizophrenia (schizoaffective disorder, major depressive disorder, bipolar I disorder, bipolar II disorder, general anxiety disorder, obsessive-compulsive disorder, post-traumatic stress disorder, dementia or mild neurocognitive disor