Tirzepatide in PWS, HO and GNSO

Recruiting now · Phase 4

Conditions studied: Prader-Willi Syndrome, Hypothalamic Obesity, Obesity/Therapy

In brief

This research study is comparing the effectiveness of a weight loss medication called Tirzepatide in young adults with Prader-Willi Syndrome and/or hypothalamic obesity, as compared to young adults with obesity that is unrelated to a genetic syndrome or underlying medical cause. These groups will be given medication for 1 year to see how weight and other health factors are effected by the medication.

Key facts

Study ID

NCT06901245

Run by

Grace Kim

People needed

36

Starts

2025-05-01

Expected to finish

2026-12-01

Last updated by the study team

2025-09-16

Who can join

Age: 18 and older, up to 26. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Individuals 18-26 years with a BMI in the obesity range (BMI ≥95th percentile for age and sex or ≥30 kg/m2) with either 1) genetically confirmed diagnosis of PWS, 2) hypothalamic obesity as defined by damage to the medial hypothalamic region resulting in dysregulation of satiety and energy balance as diagnosed by a physician, 3) general obesity unrelated to a genetic syndrome or underlying medical condition
• In a stable care setting at least 6 months prior to enrollment
• Able and willing to participate in study visits including tolerating blood draws, urine samples and tolerate DXA scan.
• Ability to take weekly subcutaneous tirzepatide
• Consistent caregiver if they are not independent
• Stable diet and exercise regimen for at least 6 months prior to enrollment
• Able to use contraceptive methods if able to conceive offspring in order to prevent unintentional pregnancy during the study

You may not qualify if…

• Current or recent (within 3 months of start of study drug initiation) use of weight loss medications
• Current use of insulin or sulfonylurea or other medication affecting insulin secretion or GLP1 clearance
• Current or prior use of any GLP1A or DPP4 inhibitor during the 6 months before screening
• Any medications that may affect the study endpoints
• Significant weight change (>3% weight gain or loss) in the last 2 months prior to enrollment
• Change in dose of chronic endocrine medications (testosterone, estrogen, levothyroxine, or growth hormone medications) >10%/kg/day for at least 3 months prior to study
• Current pregnancy or desire to become pregnant within study period, current lactation
• History of recurrent pancreatitis, CKD, gastroparesis
• Chronic/acute heart, kidney, or liver disease
• Personal or family history of medullary thyroid carcinoma or MEN syndrome type 2
• Uncontrolled diabetes (A1C >8.5%)
• DVT
• Cancer within the previous 5 years
• Current participation in an interventional clinical study
• Previous or planned surgical treatment for obesity
• Individuals with current substance abuse equivalnt to moderate or severe based on DSM 5 criteria (Hasin DS, 2013)
• Any suicidal ideation in the past year
• Unable to perform any of the procedures for the study
• Have a body weight, height, and/or width that that prohibits the ability to obtain accurate measurements according to the DXA manufacturer's specification
• Any condition that would prevent successful participation in the study.

Where it is running

• Children's Minnesota — Saint Paul, Minnesota, United States (enrolling)
• Vanderbilt University Medical Center — Nashville, Tennessee, United States (enrolling)
• Seattle Children's Hospital — Seattle, Washington, United States (enrolling)

Full record on ClinicalTrials.gov

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