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A Clinical Study That Will Evaluate How Well SEP-363856 Works and How Safe it is in People With Schizophrenia That Switch to SEP-363856 From Their Current Antipsychotic Medication

Phase 3
Completed
Conditions
Schizophrenia
Interventions
Registration Number
NCT05628103
Lead Sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Brief Summary

This study will evaluate how well SEP-363856 works and how safe it is in people with schizophrenia that switch to SEP-363856 from their current antipsychotic medication.

Detailed Description

This is an 8-week, outpatient, multicenter, open-label, single-group, flexible-dose study.

Following a screening period of up to 21 days, eligible participants will take part in the study. In the 8-week treatment period, participants will be treated with SEP-363856 while continuing to take the full dose of their pre-switch antipsychotic. After the end of the treatment period, participants will be required to complete the follow-up visit, 7 days after the last dose of SEP-363856.

Recruitment & Eligibility

Status
COMPLETED
Sex
All
Target Recruitment
101
Inclusion Criteria

This list is not all inclusive

  • Participants meets Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) criteria for a diagnosis of schizophrenia.
  • Participants are judged to be clinically stable (ie, no evidence of an acute exacerbation of schizophrenia) by the Investigator for at least 8 weeks prior to Baseline.
  • Participants must be judged by the Investigator to be an appropriate candidate for switching current antipsychotic medication due to safety or tolerability concerns and/or insufficient efficacy.
  • Participants are taking an oral antipsychotic and the antipsychotic regimen has been stable for at least 6 weeks prior to Screening.
Exclusion Criteria

This list is not all inclusive

  • Participant has a current DSM-5 diagnosis or presence of symptoms consistent with a major psychiatric disorder, other than schizophrenia, that is the primary focus of treatment.
  • Participants are at significant risk of harming self or others based on investigator's judgment.
  • Participant has any clinically significant unstable medical condition or any clinically significant chronic disease that in the opinion of the Investigator, would limit the participant's ability to complete and/or participate in the study.
  • Female participant who is pregnant or lactating.
  • Participant tests positive for drugs of abuse at Screening.

Study & Design

Study Type
INTERVENTIONAL
Study Design
SINGLE_GROUP
Arm && Interventions
GroupInterventionDescription
SEP-363856SEP-363856Participants will receive flexible doses of SEP-363856 50 to 100 milligrams per day (mg/day), orally, once daily (QD) up to Week 8. The dose will be titrated up from 50 mg/day on Days 1 to 3, to 75 mg/day on Days 4 to 7. Beginning Day 8, the dose will be adjusted within the range of 50 mg/day to 100 mg/day in 25 mg increments (i.e. 50, 75, or 100 mg/day) up to Week 8.
Primary Outcome Measures
NameTimeMethod
Percentage of subjects who discontinue for clinical reasons (ie, discontinued due to an adverse event [AE] or lack of efficacy)Up to Week 12
Secondary Outcome Measures
NameTimeMethod
Percentage of subjects who discontinue for any reason (ie, all causes for discontinuation)Up to Week 12

Trial Locations

Locations (25)

Clinical Innovations, Inc

🇺🇸

Riverside, California, United States

California Neuropsychopharmacology Clinical Research Institute, LLC (CNRI-San Diego, LLC)

🇺🇸

San Diego, California, United States

Cenexel CNS Research

🇺🇸

Torrance, California, United States

Larkin Behavioral Health Services

🇺🇸

Hollywood, Florida, United States

Premier Clinical Research Institute, Inc.

🇺🇸

Miami, Florida, United States

Wellness Research Center

🇺🇸

Miami, Florida, United States

Advanced Discovery Research LLC

🇺🇸

Atlanta, Georgia, United States

Atlanta Center for Medical Research

🇺🇸

Atlanta, Georgia, United States

Uptown Research

🇺🇸

Chicago, Illinois, United States

Hassman Research Institute

🇺🇸

Berlin, New Jersey, United States

IMA Clinical Research

🇺🇸

Las Vegas, Nevada, United States

Advanced Research Center, Inc.

🇺🇸

Anaheim, California, United States

Clinical Innovations Inc.

🇺🇸

Bellflower, California, United States

ProScience Research Group

🇺🇸

Culver City, California, United States

Collaborative Neuroscience Research, LLC

🇺🇸

Garden Grove, California, United States

Synergy San Diego

🇺🇸

Lemon Grove, California, United States

CMB Clinical Trials

🇺🇸

Santee, California, United States

Atlanta Behavioral Research

🇺🇸

Atlanta, Georgia, United States

CBH Health

🇺🇸

Gaithersburg, Maryland, United States

PsychCare Consultants Research

🇺🇸

Saint Louis, Missouri, United States

New Hope Clinical Research

🇺🇸

Charlotte, North Carolina, United States

Clinical Trials of America, LLC

🇺🇸

Hickory, North Carolina, United States

Charak Clinical Research Center

🇺🇸

Garfield Heights, Ohio, United States

Pillar Clinical Research, LLC

🇺🇸

Richardson, Texas, United States

Nova Psychiatry, Inc.

🇺🇸

Orlando, Florida, United States

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