Effects of Olanzapine Combined With Samidorphan on Weight Gain in Schizophrenia: A 24-Week Phase 3 Study.
Christoph U Correll, John W Newcomer, Bernard Silverman...
https://pubmed.ncbi.nlm.nih.gov/32791894/Actively Recruiting
Led by New York State Psychiatric Institute · Updated on 2026-07-13
30
Participants Needed
1
Research Sites
N/A
Total Duration
Researchers are evaluating the effects of combining olanzapine-samidorphan OlzSam with aerobic exercise on weight gain in people diagnosed with schizophrenia, schizoaffective disorder, or bipolar disorder types I, II, or NOS. The study aims to see if adding exercise reduces weight gain compared to historical data of OlzSam alone. This single-site, phase 4 trial focuses on treatment outcomes over an eight-week period. Participants will receive eight weeks of open-label OlzSam medication, with olanzapine doses adjusted by investigators during the first four weeks while samidorphan remains fixed at 10 mg. The first four weeks include aerobic exercise sessions 2 to 4 days per week. The study measures weight and metabolic changes at four and eight weeks, with cognitive assessments at baseline and study end. Throughout the trial, participants undergo medical and psychiatric screening, comprehensive weight, metabolic, and symptom evaluations before and after exercise, and cognitive tests. Researchers monitor weight change primarily at four weeks and secondarily at eight weeks. The total study duration for participants is eight weeks, during which their response to the combined treatment and exercise is carefully assessed.
CONDITIONS
Exercise and Olanzapine-samidorphan
M
Megan Mayer, BA
J
Joshua T Kantrowitz, MD
Explore thousands of other clinical trials that might be a better match.
Sign up to get personalized trial recommendations delivered to your inbox.
Already have an account? Log in here
New York State Psychiatric Institute
Lead Sponsor
This table compares participation in this trial with other options available for this condition. The information is drawn from published research and the trial’s study details and is provided for educational purposes only.
| Factors | Olanzapine‑samidorphan + Exercise | Olanzapine monotherapy (standard care) |
|---|---|---|
| What it is | A combined regimen of olanzapine co‑formulated with samidorphan plus a structured 4‑week aerobic exercise program added to 8 weeks of treatment | Olanzapine alone is a widely used atypical antipsychotic for schizophrenia and bipolar disorder |
| Role in trial | Investigational treatment evaluated in a single‑group study | Not studied within this trial — shown for external comparison |
| Primary use | To treat schizophrenia or bipolar disorder while mitigating olanzapine‑related weight gain | To manage psychotic symptoms in schizophrenia or bipolar disorder |
| How it is given or performed | Study drug combining olanzapine‑samidorphan with a supervised aerobic exercise program | Oral olanzapine given as monotherapy in routine psychiatric practice |
| Evidence status | Effect on weight gain to be evaluated in this trial; no published results yet | Olanzapine has established antipsychotic efficacy but is associated with significant weight gain |
| Important risks | Risks under study; weight‑gain mitigation and safety to be assessed | Associated with substantial weight gain and metabolic side effects |
| Important limitations | Single‑group design lacks internal control; exercise component may not be standalone‑feasible | Monotherapy leads to weight gain that may affect adherence or health outcomes |
Disclaimer: This comparison is created with the help of artificial intelligence(AI) and may contain errors or missing information. It is not medical advice and does not mean one option is better or safer than another. Clinical trials are still being studied, and joining a trial is your choice. Please consult your healthcare professional before making any decisions.
You may qualify if you...
You will not qualify if you...
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 screening visit
Duration - 8 weeks
Participants receive open-label olanzapine-samidorphan medication for eight weeks. During the first four weeks, they also complete aerobic exercise sessions 2 to 4 days per week. Olanzapine doses may be adjusted by the study doctor, while samidorphan dose remains fixed.
Weekly visits during treatment
Duration - At study end (week 8)
Participants undergo weight, metabolic, and cognitive assessments at the end of the study to evaluate treatment effects and safety.
1 final assessment visit
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NA
Model
SINGLE_GROUP
Primary Purpose
TREATMENT
Number of Arms
1
Have more questions? Get in touch with our team for quick support
Christoph U Correll, John W Newcomer, Bernard Silverman...
https://pubmed.ncbi.nlm.nih.gov/32791894/Maximilian Huhn, Adriani Nikolakopoulou, Johannes Schneider-Thoma...
https://pubmed.ncbi.nlm.nih.gov/31303314/New York State Psychiatric Institute
Lead Sponsor