A Trial of Setmelanotide in Patients With Congenital Hypothalamic Obesity (Sub-study of NCT05774756)

Last updated: February 10, 2026
Sponsor: Rhythm Pharmaceuticals, Inc.
Overall Status: Active - Recruiting

Phase

3

Condition

Obesity

Diabetes Prevention

Hormone Deficiencies

Treatment

Setmelanotide

Placebo

Clinical Study ID

NCT06760546
RM-493-040-A
  • Ages > 4
  • All Genders

Study Summary

This is a sub-study of Study RM-493-040 (NCT05774756).

The goal of this sub-study is to learn how well Setmelanotide works to improve weight reduction, hunger, and quality of life in patients 4 years of age and older with congenital Hypothalamic Obesity (cHO). To determine how well setmelanotide works and how safe it is, patients with cHO will take a daily injection of either setmelanotide or placebo and complete trial assessments for up to 26 weeks on a therapeutic regimen.

Eligibility Criteria

Inclusion

Key Inclusion Criteria:

  1. Diagnosis of multiple pituitary hormone deficiency (MPHD), or septo-optic dysplasia (SOD), or optic nerve hypoplasia (ONH), or Childhood-onset combined pituitaryhormone deficiency (CPHD), or Pituitary Stalk Interruption Syndrome (PSIS) with atleast one pituitary deficiency AND a body mass index (BMI) of ≥30 kg/m2 for patients ≥18 years of age, or BMI ≥95th percentile for age and sex for patients 4 to <18years

  2. Age 4 years and older

  3. Weight gain associated with the hypothalamic injury and a BMI of ≥30 kg/m2 forpatients ≥18 years of age or BMI ≥95th percentile for age and sex for patients 4 to <18 years of age

  4. Agree to use a highly effective form of contraception throughout the study and for 90 days after the study

Exclusion

Key Exclusion Criteria:

  1. Diagnosis of Prader-Willi syndrome (PWS) or Rapid-onset obesity withhypoventilation, hypothalamic, autonomic dysregulation, neuroendocrine tumorsyndrome (ROHHADNET)

  2. Weight loss >2% in the previous 3 months for patients aged ≥18 years or >2%reduction in BMI for patients aged 4 to <18 years

  3. Bariatric surgery or procedure within last 2 years

  4. Diagnosis of severe psychiatric disorders; any suicidal ideation, attempt orbehavior

  5. Current, clinically significant pulmonary, cardiac, metabolic, or oncologic disease

  6. Significant dermatologic findings relating to melanoma or pre-melanoma skin lesions (excluding non-invasive basal or squamous cell lesion)

  7. History or close family history of skin cancer or melanoma

  8. Participation in any clinical trial with an investigational drug/device within 3months prior to the first trial dose

  9. Previously enrolled in a clinical trial involving setmelanotide or any previousexposure to setmelanotide

  10. Inability to comply with once daily (QD) injection regimen

  11. If female, pregnant and/or breastfeeding.

  12. If receiving hormone replacement therapy, dose has remained stable for at least 2months before Screening

Other protocol defined Inclusion/Exclusion criteria may apply.

Study Design

Total Participants: 39
Treatment Group(s): 2
Primary Treatment: Setmelanotide
Phase: 3
Study Start date:
September 23, 2025
Estimated Completion Date:
March 13, 2028

Connect with a study center

  • UCL Great Ormond Street Institute of Child Health

    London 2643743, Greater London WC1N 1EH
    United Kingdom

    Active - Recruiting

  • Birmingham Women and Children's Hospital NHS Trust

    Birmingham 2655603, West Midlands B46NH
    United Kingdom

    Active - Recruiting

  • Hull Royal Infirmary

    Hull 2645425, HU32RW
    United Kingdom

    Active - Recruiting

  • University of Alabama

    Birmingham 4049979, Alabama 4829764 35233
    United States

    Active - Recruiting

  • Children's Hospital Colorado

    Aurora 5412347, Colorado 5417618 80045
    United States

    Active - Recruiting

  • Lurie Children's Hospital

    Chicago 4887398, Illinois 4896861 60611
    United States

    Active - Recruiting

  • Boston Children's Hospital

    Boston 4930956, Massachusetts 6254926 02115
    United States

    Active - Recruiting

  • Children's Minnesota

    Saint Paul 5045360, Minnesota 5037779 55102
    United States

    Active - Recruiting

  • Columbia University Irving Medical Center

    New York 5128581, New York 5128638 10032
    United States

    Active - Recruiting

  • Children's Hospital of Philadelphia

    Philadelphia 4560349, Pennsylvania 6254927 19104
    United States

    Active - Recruiting

  • Seattle Children's Research Institute

    Seattle 5809844, Washington 5815135 98105
    United States

    Active - Recruiting

Map preview placeholder

Not the study for you?

Let us help you find the best match. Sign up as a volunteer and receive email notifications when clinical trials are posted in the medical category of interest to you.