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Enrolling by invitationPhase 2

Setmelanotide for Obesity in One Person With Pseudohypoparathyroidism Type 1a

Tests setmelanotide for obesity in one person with pseudohypoparathyroidism type 1a.

Key facts

Who runs it
Massachusetts General Hospital
Where
Boston, United StatesSee the site
Trial code
Registry title
Setmelanotide to Treat Obesity in a Patient With Pseudohypoparathyroidism Type 1a (PHP1a)
Status
Enrolling by invitation
Phase
Phase 2
People taking part
1 person, planned
Started
21 Jul 2026
Expected to end
30 Apr 2027
Type of study
Interventional
Treatments tested
  • Setmelanotide
Record updated
23 July 2026

Who can take part

AI summary

From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.

The trial is looking for one patient with pseudohypoparathyroidism type 1a (PHP1a) and obesity, to test setmelanotide for 6 months.

Sex
All sexes can join.
Disease stage
Known PHP1a with a confirmed GNAS mutation, and obesity.
Earlier treatment
Diabetes and high blood fat (dyslipidemia) must already be on optimized therapy.
Biomarker or test result
A confirmed GNAS mutation.

Main reasons for not taking part

  • Taking medicines that may affect the trial results and that were changed within 3 months before the start
  • Taking medicines that are likely to need a dose change during the 6-month treatment

The registry criteria, word for word

Show all 3 criteriaShow less

Who can take part

  • Known patient with PHP1a (confirmed GNAS mutation)
  • Optimized therapy for diabetes and dyslipidemia

Who cannot take part

  • Use of medications that may affect endpoints that are changed within 3 months prior to Baseline or that are likely to require a change in dose during the open-label treatment period

Where in United States

  • Massachusetts General HospitalBoston, United StatesEnrolling by invitation

About the trial

What the trial wants to find out

The investigators plan to test the efficacy and safey of 6-months of open-label setmelanotide to treat obesity in a single patient with pseudohypoparathyroidism type 1a due to a GNAS mutation.

The group in the trial

  • Patient with pseudohypoparathyroidism type 1aOther group

    A preselected patient with obesity related to pseudohypoparathyroidism type 1a.

    Treatment: Setmelanotide

Questions to ask the study team

  1. How often do I need to come in, and for how long each time?
  2. Are travel costs paid?
  3. Can I keep my own doctor?
  4. What happens if I want to stop?

Contact the study team: see the registry record → Contacts and Locations

Print a page for my doctor

Data and sources

Registry record
Listed on ClinicalTrials.gov.
Official title
Setmelanotide to Treat Obesity in a Patient With Pseudohypoparathyroidism Type 1a (PHP1a)
Plain-language title
Setmelanotide for Obesity in One Person With Pseudohypoparathyroidism Type 1aGenerated from the registry record. The registry title is the official one.
AI summary
From the trial's eligibility criteria. Read by machine on 12 November 2026.
Record updated
23 July 2026