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Showing 1–24 of 74 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Prader Willi Syndrome Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Diagnosis of Central Adrenal Insufficiency in Patients With Prader-Willi Syndrome

NCT02368379
View directory record Official record
Conditions
Prader Willi Syndrome, Adrenal Insufficiency
Interventions
Low dose (1 mcg) ACTH stimulation test, Overnight metyrapone test
Other
Lead sponsor
Nationwide Children's Hospital
Other
Eligibility
2 Years and older
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 28, 2018 · Synced Jun 26, 2026, 4:14 PM EDT
Completed Phase 1 Interventional

Bioequivalence of Two Somatropin Products (Norditropin® Versus Genotropin®) in Healthy Adult Volunteers

NCT01401244
View directory record Official record
Conditions
Genetic Disorder, Prader-Willi Syndrome, Growth Disorder, Idiopathic Short Stature, Healthy
Interventions
somatropin
Drug
Lead sponsor
Novo Nordisk A/S
Industry
Eligibility
18 Years to 40 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
Evansville, Indiana
Source: ClinicalTrials.gov public record
Updated Feb 23, 2017 · Synced Jun 26, 2026, 4:14 PM EDT
Recruiting Phase 4 Interventional

Tirzepatide in PWS, HO and GNSO

NCT06901245
View directory record Official record
Conditions
Prader-Willi Syndrome, Hypothalamic Obesity, Obesity/Therapy
Interventions
Tirzepatide
Drug
Lead sponsor
Grace Kim
Other
Eligibility
18 Years to 26 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
3
States / cities
Saint Paul, Minnesota • Nashville, Tennessee • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 15, 2025 · Synced Jun 26, 2026, 4:14 PM EDT
Terminated Phase 2Phase 3 Interventional Results available

Effects of Livoletide (AZP-531) on Food-related Behaviors in Patients With Prader-Willi Syndrome

NCT03790865
View directory record Official record
Conditions
Prader-Willi Syndrome, Hyperphagia
Interventions
Livoletide, Placebo
Drug
Lead sponsor
Millendo Therapeutics SAS
Industry
Eligibility
4 Years to 65 Years
Enrollment
158 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
15
States / cities
Birmingham, Alabama • Orange, California • San Diego, California + 12 more
Source: ClinicalTrials.gov public record
Updated Feb 16, 2021 · Synced Jun 26, 2026, 4:14 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

CBDV vs Placebo in Children and Adults up to Age 30 With Prader-Willi Syndrome (PWS)

NCT03848481
View directory record Official record
Conditions
Prader-Willi Syndrome
Interventions
CBDV Compound, Placebo
Drug
Lead sponsor
Eric Hollander
Other
Eligibility
5 Years to 30 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Jun 26, 2026, 4:14 PM EDT
Recruiting Not applicable Interventional

Cerebellar TMS and Satiety in Prader-Willi Syndrome

NCT05938543
View directory record Official record
Conditions
Prader-Willi Syndrome
Interventions
Repetitive Transcranial Magnetic Stimulation (rTMS)
Device
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 64 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 4, 2025 · Synced Jun 26, 2026, 4:14 PM EDT
Terminated Phase 2 Interventional Results available

A Study to Assess the Long-Term Safety of Pharmaceutical Grade Synthetic Cannabidiol Oral Solution in Participants With Prader-Willi Syndrome

NCT03458416
View directory record Official record
Conditions
Prader-Willi Syndrome
Interventions
Cannabidiol Oral Solution
Drug
Lead sponsor
Radius Pharmaceuticals, Inc.
Industry
Eligibility
8 Years to 17 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Jun 21, 2023 · Synced Jun 26, 2026, 4:14 PM EDT
Completed Not applicable Interventional

Prader-Willi Syndrome Macronutrient Study

NCT02011360
View directory record Official record
Conditions
Prader Willi Syndrome, Syndromic Obesity, Childhood Obesity
Interventions
Low Carbohydrate diet, Low Fat diet
Other
Lead sponsor
Duke University
Other
Eligibility
5 Years to 17 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 13, 2016 · Synced Jun 26, 2026, 4:14 PM EDT
Withdrawn Phase 2 Interventional

Study of Tesomet With Open-label Extension in Subjects With Prader-Willi Syndrome

NCT05198362
View directory record Official record
Conditions
Prader-Willi Syndrome
Interventions
Placebo, Tesomet
Other · Drug
Lead sponsor
Saniona
Industry
Eligibility
13 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Lansing, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 12, 2022 · Synced Jun 26, 2026, 4:14 PM EDT
Completed Not applicable Interventional

B. Lactis B94 Effects of Gastrointestinal Function

NCT03277157
View directory record Official record
Conditions
Quality of Life
Interventions
B. lactis B94, Placebo
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 75 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
3
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 27, 2019 · Synced Jun 26, 2026, 4:14 PM EDT
Completed Phase 2 Interventional Results available

A Phase 2 Study to Evaluate the Safety and Efficacy of Pitolisant in Patients With Prader-Willi Syndrome, Followed by an Open Label Extension

NCT04257929
View directory record Official record
Conditions
Prader-Willi Syndrome
Interventions
Pitolisant oral tablets, Placebo oral tablet
Drug
Lead sponsor
Harmony Biosciences Management, Inc.
Industry
Eligibility
6 Years to 65 Years
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
13
States / cities
San Diego, California • San Ramon, California • Santa Monica, California + 10 more
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced Jun 26, 2026, 4:14 PM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Parent and Infant Inter(X)Action Intervention (PIXI)

NCT03836300
View directory record Official record
Conditions
Fragile X Syndrome, Angelman Syndrome, Prader-Willi Syndrome, Dup15Q Syndrome, Duchenne Muscular Dystrophy, Phelan-McDermid Syndrome, Rett Syndrome, Smith Magenis Syndrome, Williams Syndrome, Turner Syndrome, Klinefelter Syndrome, Chromosome 22q11.2 Deletion Syndrome, Tuberous Sclerosis, Down Syndrome
Interventions
Parent-Infant Inter(X)action Intervention (PIXI)
Behavioral
Lead sponsor
RTI International
Other
Eligibility
Up to 99 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2026
U.S. locations
1
States / cities
Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 30, 2025 · Synced Jun 26, 2026, 4:14 PM EDT
Completed Phase 1Phase 2 Interventional

Behavioral Treatment of Obsessive-Compulsive Symptoms in Youth With Prader-Willi Syndrome: A Pilot Project

NCT00742664
View directory record Official record
Conditions
Prader Willi Syndrome, Obsessive-compulsive Disorder
Interventions
Cognitive-behavioral therapy, Wait-list control
Behavioral
Lead sponsor
University of South Florida
Other
Eligibility
6 Years to 17 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
St. Petersburg, Florida
Source: ClinicalTrials.gov public record
Updated Aug 7, 2011 · Synced Jun 26, 2026, 4:14 PM EDT
Enrolling by invitation Phase 3 Interventional

A Study of Pitolisant in Participants With Prader-Willi Syndrome

NCT07219485
View directory record Official record
Conditions
Prader-Willi Syndrome
Interventions
Pitolisant
Drug
Lead sponsor
Harmony Biosciences Management, Inc.
Industry
Eligibility
7 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Morrisville, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 16, 2026 · Synced Jun 26, 2026, 4:14 PM EDT
Suspended Phase 3 Interventional

ARD-101 for Treatment of PWS: The Hunger Elimination or Reduction Objective Trial

NCT06828861
View directory record Official record
Conditions
Hyperphagia, Prader-Willi Syndrome
Interventions
Placebo, ARD-101
Drug
Lead sponsor
Aardvark Therapeutics, Inc.
Industry
Eligibility
7 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
16
States / cities
Birmingham, Alabama • Encinitas, California • Orange, California + 13 more
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Jun 26, 2026, 4:14 PM EDT
Completed Phase 2 Interventional

Study to Evaluate Efficacy, Safety, and Tolerability of RGH-706 in Prader-Willi Syndrome

NCT05322096
View directory record Official record
Conditions
Prader-Willi Syndrome
Interventions
RGH-706, Placebo
Drug
Lead sponsor
Gedeon Richter Plc.
Industry
Eligibility
17 Years and older
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
6
States / cities
San Diego, California • Chicago, Illinois • Brooklyn, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2024 · Synced Jun 26, 2026, 4:14 PM EDT
Completed No phase listed Observational

Characteristics of Prader-Willi Syndrome and Early-onset Morbid Obesity

NCT00375089
View directory record Official record
Conditions
Prader-Willi Syndrome, Obesity
Interventions
Group 1, Group 2
Other
Lead sponsor
University of Florida
Other
Eligibility
Up to 60 Years
Enrollment
392 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2014
U.S. locations
4
States / cities
Orange, California • Gainesville, Florida • Kansas City, Kansas + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2014 · Synced Jun 26, 2026, 4:14 PM EDT
Active, not recruiting Phase 3 Interventional

Open-Label Extension Study of DCCR in Patients With Prader-Willi Syndrome

NCT05701774
View directory record Official record
Conditions
Prader-Willi Syndrome
Interventions
DCCR
Drug
Lead sponsor
Soleno Therapeutics, Inc.
Industry
Eligibility
4 Years and older
Enrollment
83 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
17
States / cities
Orange, California • Palo Alto, California • San Diego, California + 14 more
Source: ClinicalTrials.gov public record
Updated Apr 1, 2025 · Synced Jun 26, 2026, 4:14 PM EDT
Terminated Phase 3 Interventional

Effect of Rimonabant on Weight Gain and Body Composition in Adults With Prader Willi Syndrome

NCT00603109
View directory record Official record
Conditions
Prader-willi Syndrome
Interventions
rimonabant, placebo
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 35 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 19, 2023 · Synced Jun 26, 2026, 4:14 PM EDT
Completed No phase listed Observational

Natural History Study of Serious Medical Events in PWS

NCT03718416
View directory record Official record
Conditions
Prader-Willi Syndrome
Interventions
Not listed
Lead sponsor
Foundation for Prader-Willi Research
Other
Eligibility
5 Years and older
Enrollment
700 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Walnut, California
Source: ClinicalTrials.gov public record
Updated Feb 28, 2024 · Synced Jun 26, 2026, 4:14 PM EDT
Completed Phase 2 Interventional

A Study of Oral ARD-101 in Patients With Prader-Willi Syndrome

NCT05153434
View directory record Official record
Conditions
Prader-Willi Syndrome
Interventions
ARD-101
Drug
Lead sponsor
Aardvark Therapeutics, Inc.
Industry
Eligibility
17 Years to 65 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
2
States / cities
Palo Alto, California • Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated May 8, 2025 · Synced Jun 26, 2026, 4:14 PM EDT
Completed No phase listed Observational

Hypoglycemia in Prader-Willi Syndrome

NCT01897363
View directory record Official record
Conditions
Prader Willi Syndrome, Hypoglycemia
Interventions
Infants with Prader-Willi Syndrome
Other
Lead sponsor
University of Florida
Other
Eligibility
2 Months to 12 Months
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 24, 2014 · Synced Jun 26, 2026, 4:14 PM EDT
Active, not recruiting Phase 2 Interventional

A Study of Setmelanotide in Patients With Prader-Willi Syndrome

NCT06772597
View directory record Official record
Conditions
Prader-Willi Syndrome, Obesity, Hyperphagia
Interventions
Setmelanotide
Drug
Lead sponsor
Rhythm Pharmaceuticals, Inc.
Industry
Eligibility
6 Years to 65 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 11, 2026 · Synced Jun 26, 2026, 4:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Treatment of Self-Injurious Behavior in Individuals With Prader-Willi Syndrome

NCT00065923
View directory record Official record
Conditions
Prader-Willi Syndrome, Self-Injurious Behavior
Interventions
Topiramate
Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years to 66 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2002
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Apr 30, 2013 · Synced Jun 26, 2026, 4:14 PM EDT