Clinical Research Directory

Key Inclusion Criteria: * Signed informed consent must be obtained prior to participation in the study * Participants 18 to 65 years of age, inclusive at screening * Participant agrees to be hospitalized starting at Day -1 and for at least 28 days after randomization * Participant has a primary diagnosis of schizophrenia established by a comprehensive psychiatric evaluation based on the Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5) criteria and confirmed by Mini International Neuropsychiatric Interview for Schizophrenia and Psychotic Disorder Studies (MINI), version 7.0.2. at screening * Participant meets the following requirements per PANSS at screening and baseline: Total PANSS score ≤ 110, Score ≤ 4 (moderate) for item P1-P7, Score ≤ 4 (moderate) for G9 * Participant is treated with a single antipsychotic (typical and/or atypical) with a stable dose for at least 12 weeks prior to randomization. Participant must agree to maintain the treatment with standard of care antipsychotic for the duration of the study * Participants who are treated with psychotropic medications other than antipsychotics need to be taking these medications as a stable dose for at least 12 weeks before randomization Key Exclusion Criteria: * Participant experienced worsening of schizophrenia within 3 months prior to randomization documented by symptom exacerbation and/or hospitalizations (hospitalization for social management and/or day hospital programs within this time are acceptable) * Participant was treated with Clozapine, electroconvulsive therapy (ECT) or transcranial magnetic stimulation (TMS) in the last 6 months prior to randomization * Participant meets the DSM-5 criteria for another psychotic disorder * Participant has a history of substance or alcohol use disorder, except nicotine or caffeine, within 1 year before screening, or current abuse as determined by urine drug screen or alcohol test * Score "yes" on item 4 or item 5 of the Suicidal Ideation section of the C-SSRS, if this ideation occurred in the past 6 months, or "yes" on any item of the Suicidal Behavior section, except for the "Non-Suicidal Self-Injurious Behavior" (item also included in the Suicidal Behavior section), if this behavior occurred in the past 2 years. Other protocol-defined inclusion/exclusion criteria may apply.