Prader-Willi syndrome
MONDO:0008300Prader-Willi syndrome is a rare genetic disorder characterized by hypothalamic-pituitary abnormalities with severe hypotonia during the neonatal period and first two years of life and the onset of hyperphagia with a risk of morbid obesity during infancy and adulthood, learning difficulties and behavioral problems or severe psychiatric problems.
Also known as: Prader-Labhart-Willi syndrome, Prader-Willi syndrome, Prader-Willi-Labhart syndrome, Willi-Prader syndrome, PWS, Prader-Willi syndrome chromosome region, Prader-Willi-like syndrome associated with chromosome 6, obesity, muscular hypotonia, intellectual disability, short stature, hypogonadotropic hypogonadism, and small hands and feet
64 clinical trials for this condition and its sub-types.
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Broader categories
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Growth hormone trial aims to boost muscle in Prader-Willi patients
Disease control CompletedThis completed Phase 3 study tested somatropin, a synthetic growth hormone, in 33 Japanese children and adults with Prader-Willi syndrome. The goal was to see if it safely improves body composition by increasing lean body mass and reducing fat. Participants were divided into thre…
Phase: PHASE3 • Sponsor: Pfizer • Aim: Disease control
Last updated Jun 27, 2026 08:11 UTC
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New lifestyle program aims to help Prader-Willi patients keep weight off
Disease control CompletedThis completed trial tested a personalized program of physical activity, nutrition guidance, and education for 128 adults with Prader-Willi syndrome. Participants followed the program during a 5-week hospital stay, with the goal of stabilizing or reducing their body mass index (B…
Phase: NA • Sponsor: Assistance Publique - Hôpitaux de Paris • Aim: Disease control
Last updated Jun 27, 2026 07:53 UTC
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Can an iPad game spot autism early?
Diagnosis CompletedThis study tested whether an iPad game (Play.Care) could help diagnose autism spectrum disorder (ASD) in children aged 2.5 to 5 years. The game measures how children move while playing, since movement differences may be early signs of autism. Researchers compared the game's resul…
Phase: NA • Sponsor: University of Strathclyde • Aim: Diagnosis
Last updated Jun 27, 2026 12:09 UTC
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Can a wakefulness drug beat daytime sleepiness in Prader-Willi syndrome?
Symptom relief CompletedThis phase 2 study tested whether pitolisant, a drug that promotes wakefulness, can safely reduce excessive daytime sleepiness in people with Prader-Willi syndrome. The trial enrolled 65 participants aged 6 to 65 and compared pitolisant to a placebo over 11 weeks, followed by an …
Phase: PHASE2 • Sponsor: Harmony Biosciences Management, Inc. • Aim: Symptom relief
Last updated Jun 27, 2026 12:31 UTC
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New parent support programme shows promise for families of children with complex needs
Symptom relief CompletedThis pilot study tested a community-based group programme called 'Encompass' for parents of children under 5 with complex neurodisability. Fifteen parents in East London attended ten group sessions over six months. The study aimed to see if the programme was feasible and acceptab…
Phase: NA • Sponsor: City, University of London • Aim: Symptom relief
Last updated Jun 27, 2026 12:05 UTC
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Can a 'Love Hormone' spray tame Prader-Willi symptoms?
Symptom relief CompletedThis study tested whether oxytocin nasal spray, sometimes called the 'love hormone,' can improve behavior and eating problems in adults with Prader-Willi syndrome. Fifty participants received either oxytocin or a placebo daily or every three days for 28 days. Researchers measured…
Phase: PHASE2, PHASE3 • Sponsor: University Hospital, Toulouse • Aim: Symptom relief
Last updated Jun 27, 2026 08:02 UTC
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New program aims to help siblings of chronically ill children
Symptom relief CompletedThis completed trial tested a 5-session group program for siblings and parents of children with chronic illness. The goal was to improve sibling mental health, family communication, and quality of life. 288 families participated, with some receiving the program immediately and ot…
Phase: NA • Sponsor: University of Oslo • Aim: Symptom relief
Last updated Jun 26, 2026 18:43 UTC
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Researchers measure breathing, strength, and quality of life in hospitalized endocrine patients
Knowledge-focused CompletedThis completed observational study at Uşak University examined 150 adults hospitalized in the endocrinology department. Researchers measured breathing, muscle strength, pain, fatigue, sleep quality, physical activity, balance, and nerve function. The goal was to better understand…
Sponsor: Uşak University • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:30 UTC
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Hormone study aims to unlock Prader-Willi feeding mystery
Knowledge-focused CompletedThis completed study looked at how appetite-regulating hormones change in infants with Prader-Willi syndrome during the first four years of life. Researchers collected blood samples from 215 infants to understand why they switch from poor feeding to severe overeating and obesity.…
Phase: NA • Sponsor: University Hospital, Toulouse • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:05 UTC
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Gene sequencing uncovers mysterious fetal malformations
Knowledge-focused CompletedThis study tested whether a powerful DNA test called high-throughput exome sequencing can find genetic causes of multiple birth defects in fetuses when standard exams fail. Researchers studied 100 fetuses with at least two malformations and no prior diagnosis. They compared the n…
Sponsor: Centre Hospitalier Universitaire Dijon • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:03 UTC
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Speedy gene test aims to give answers on birth defects in just 7 days
Knowledge-focused CompletedThis study tested whether a fast type of genetic test called rapid genome sequencing can find the cause of birth defects seen on ultrasound more quickly than current methods. Researchers included 184 pregnancies with certain ultrasound findings. The goal was to see if results cou…
Sponsor: Centre Hospitalier Universitaire Dijon • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:00 UTC
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Could a simple questionnaire unlock the secrets of Kids' eating disorders?
Knowledge-focused CompletedThis study tested a new parent questionnaire called ORALQUEST to assess feeding and eating disorders in children aged 9 months to 6 years. Researchers included 338 children with chronic conditions like heart defects or autism, as well as those with picky eating. The goal was to s…
Sponsor: Assistance Publique - Hôpitaux de Paris • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:04 UTC
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Could hidden nerve damage explain pain in kids with developmental delays?
Knowledge-focused CompletedThis completed study looked at whether children with neurodevelopmental disorders (like mitochondrial disease, cerebral palsy, or developmental delay) have fewer small nerve fibers in their skin, which could cause pain. Researchers took small skin biopsies from 203 children—some …
Sponsor: Heinrich-Heine University, Duesseldorf • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:00 UTC
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New screening tool aims to spot suicide risk in kids with autism
Knowledge-focused CompletedThis study tested a set of questions to better identify suicide risk in young people aged 8–17 with autism or other neurodevelopmental disorders. Researchers asked 278 participants and their parents about thoughts of self-harm and understanding of death. The goal was to create a …
Sponsor: National Institute of Mental Health (NIMH) • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:52 UTC