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A Study of Setmelanotide in Patients With Prader-Willi Syndrome

A Phase 2 Open-label Study of Setmelanotide in Patients With Prader-Willi Syndrome

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06772597
Enrollment
18
Registered
2025-01-13
Start date
2025-03-04
Completion date
2027-10-31
Last updated
2026-02-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hyperphagia, Obesity, Prader-Willi Syndrome

Keywords

melanocortin 4 receptor (MC4R), MC4R agonist

Brief summary

This is a Phase 2, open-label study designed to assess the safety and efficacy of setmelanotide in patients with obesity due to Prader-Willi Syndrome (PWS) who are 6 to 65 years of age. Up to 20 patients are planned to be enrolled. Patients will take a daily subcutaneous dose of open-label setmelanotide for up to 52 weeks.

Interventions

DRUGSetmelanotide

Setmelanotide (daily subcutaneous injection)

Sponsors

Rhythm Pharmaceuticals, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
6 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: * Confirmed diagnosis of Prader-Willi Syndrome (PWS) * Age 6 to 65 * BMI ≥30 kg/m2 for patients ≥18 years of age or BMI ≥95th Percentile for age and sex * Agree to use a highly effective form of contraception and follow the study contraception requirements throughout study duration and for 90 days after. * Patient and/or guardian is able to communicate well with the Investigator, understand and comply with the requirements of the study, and understand English and sign the written informed consent.

Exclusion criteria

* Use of weight modulating medications * Abnormal eGFR, ALT, AST, and bilirubin values * Current, clinically significant pulmonary, cardiac, metabolic, or oncologic disease considered severe enough to interfere with the trial and/or confound the results. * Participation in any clinical trial with an investigational drug/device within 3 months or 5 half-lives, whichever is longer, prior to the first trial dose * Hypersensitivity to setmelanotide * Diagnosis of severe psychiatric disorders * Pregnant and/or breastfeeding Other protocol defined Inclusion/

Design outcomes

Primary

MeasureTime frame
Frequency and severity of adverse events (AEs)Baseline to Week 52

Secondary

MeasureTime frame
Proportion of patients who achieve 5% reduction in BMIBaseline to Week 52
Mean percent change in BMIBaseline to Week 52
Mean percent change in BMI and weight in patients ≥18 years of ageBaseline to Week 52
Mean change in BMI Z-Score and BMI % of 95th percentileBaseline to Week 52
Proportion of patients who achieved 5% reduction in weight from Baseline in patients ≥18 years of age and who achieved ≥0.2 reduction in BMI Z-score in patients <18 years of ageBaseline to Week 52
Mean change in the weekly average of the Prader-Willi Syndrome Food Problem Diary (PWS-FPD) total scoreBaseline to Week 52

Countries

United States

Contacts

STUDY_CHAIRDavid Meeker, MD

Rhythm Pharmaceuticals, Inc.

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 14, 2026