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Williams syndrome
MONDO:0008678A rare genetic multisystemic neurodevelopmental disorder characterized by a distinct facial appearance, cardiac anomalies (most frequently supravalvular aortic stenosis), cognitive and developmental abnormalities, and connective tissue abnormalities (such as joint laxity)
Also known as: Williams syndrome, Williams-Beuren syndrome, Williams-Beuren syndrome (WBS), deletion 7q11.23, monosomy 7q11.23, WBS, WMS, chromosome 7Q11.23 deletion syndrome, 1.5- to 1.8-Mb
42 clinical trials for this condition and its sub-types.
Follow this condition — get notified about new trialsBroader categories
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Could a common allergy drug boost brain power in kids with williams syndrome?
Disease control CompletedThis study tested a drug called clomastine fumarate in 28 children aged 3-12 with Williams syndrome, a genetic condition that causes developmental delays. The goal was to see if the drug could improve thinking, movement, and social skills by repairing brain myelin. The study used…
Phase: PHASE2 • Sponsor: Qilu Hospital of Shandong University • Aim: Disease control
Last updated Jun 27, 2026 11:03 UTC
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Blood pressure drug may help kids with rare genetic condition
Disease control CompletedThis study tested whether minoxidil, a blood pressure medicine, can improve blood vessel health in children with Williams-Beuren syndrome. The condition causes weak blood vessels due to a missing gene. 21 children took minoxidil or a placebo for 12 months, and researchers measure…
Phase: PHASE2 • Sponsor: Hospices Civils de Lyon • Aim: Disease control
Last updated Jun 27, 2026 07:52 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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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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Stretchy skin may reveal heart risks in rare genetic condition
Knowledge-focused CompletedThis study looked at how stretchy the skin and blood vessels are in people with Williams syndrome, a genetic condition that can cause heart problems. Researchers measured skin and pulse speed in 43 participants aged 5 to 70. The goal was to learn how these tissues change over tim…
Sponsor: National Heart, Lung, and Blood Institute (NHLBI) • Aim: Knowledge-focused
Last updated Jul 04, 2026 00:00 UTC
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PET scans reveal how the brain thinks in health and disease
Knowledge-focused CompletedThis study used PET scans to measure blood flow in the frontal lobe while participants performed thinking tasks. It included healthy volunteers and people with schizophrenia or Parkinson's disease. The goal was to understand how the frontal lobe works during cognitive activities …
Sponsor: National Institute of Mental Health (NIMH) • Aim: Knowledge-focused
Last updated Jul 04, 2026 00:00 UTC
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NIH study probes hidden impact of stiff arteries in rare genetic condition
Knowledge-focused CompletedThis study looked at how blood vessel stiffness affects organs like the heart, brain, kidneys, and gut in people with Williams Syndrome (WS) or supravalvular aortic stenosis (SVAS). Researchers compared 159 participants (ages 3–85) with these conditions to healthy volunteers over…
Sponsor: National Heart, Lung, and Blood Institute (NHLBI) • Aim: Knowledge-focused
Last updated Jun 27, 2026 14:00 UTC
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Brain scans reveal hidden differences in schizophrenia
Knowledge-focused CompletedThis study used advanced brain imaging (MRI and MEG) to look for differences in brain structure, chemistry, and activity between people with schizophrenia and healthy volunteers. Over 3,200 adults took part. The goal was to better understand the brain changes linked to schizophre…
Sponsor: National Institute of Mental Health (NIMH) • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:02 UTC
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Scientists launch DNA bank to unlock secrets of rare heart and genetic conditions
Knowledge-focused CompletedThis study collected DNA, tissue, and medical history from 305 people with Williams syndrome or supravalvar aortic stenosis (SVAS), as well as their family members and healthy volunteers. The goal was to create a resource for future research to understand why symptoms vary so muc…
Sponsor: National Heart, Lung, and Blood Institute (NHLBI) • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:00 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