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

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 pituitary hormone deficiency (CPHD), or Pituitary Stalk Interruption Syndrome (PSIS) with at least 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 \<18 years 2. Age 4 years and older 3. Weight gain associated with the hypothalamic injury and a BMI of ≥30 kg/m2 for patients ≥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 Key Exclusion Criteria: 1. Diagnosis of Prader-Willi syndrome (PWS) or Rapid-onset obesity with hypoventilation, hypothalamic, autonomic dysregulation, neuroendocrine tumor syndrome (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 or behavior 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 3 months prior to the first trial dose 9. Previously enrolled in a clinical trial involving setmelanotide or any previous exposure 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 2 months before Screening Other protocol defined Inclusion/Exclusion criteria may apply.