Williams Syndrome Clinical Trials

7 recruiting

Williams Syndrome Trials at a Glance

7 actively recruiting trials for williams syndrome are listed on ClinicalTrialsFinder across 6 cities in 4 countries. The largest study group is Not Applicable with 2 trials, with the heaviest enrollment activity in Bethesda, Chapel Hill, and Columbus. Lead sponsors running williams syndrome studies include National Heart, Lung, and Blood Institute (NHLBI), National Institute of Mental Health (NIMH), and Centre Hospitalier Universitaire, Amiens.

Browse williams syndrome trials by phase

Treatments under study

About Williams Syndrome Clinical Trials

Looking for clinical trials for Williams Syndrome? There are currently 7 studies actively recruiting participants. Clinical trials offer access to new treatments before they are widely available, and every approved therapy in use today was first tested through a clinical trial.

Below you can browse trials, sign up for alerts when new Williams Syndrome trials open, and view eligibility criteria for each study. Each listing includes the study phase, locations, and enrollment details.

Frequently Asked Questions

Common questions about Williams Syndrome clinical trials

A clinical trial is a carefully designed research study that tests new medical treatments, drugs, devices, or approaches in human volunteers. Every approved medication and treatment available today was proven safe and effective through clinical trials.

All clinical trials are reviewed and approved by Institutional Review Boards (IRBs) — independent committees that evaluate patient safety. Trials follow strict protocols, and your health is monitored closely throughout. You can withdraw at any time.

Not necessarily. Many trials compare the new treatment against the current standard of care, meaning all participants receive active treatment. When placebos are used, they are typically combined with standard treatment, not given alone. The trial description will always specify the design.

Under the Affordable Care Act, most private insurers are required to cover routine patient care costs during a clinical trial. The sponsor typically covers the investigational treatment itself. Medicare also covers routine costs for qualifying trials.

Yes. Participation is completely voluntary. You can withdraw at any time, for any reason, without it affecting your access to standard medical care.

Each trial has specific eligibility criteria — including age, diagnosis, disease stage, prior treatments, and general health. Browse the trials listed above and check their eligibility sections. You can also contact the trial site directly to discuss your situation.

Showing 17 of 7 trials

Recruiting

Defining the Brain Phenotype of Children With Williams Syndrome

Williams SyndromeDuplication
National Institute of Mental Health (NIMH)415 enrolled1 locationNCT01132885
Recruiting

Williams Syndrome (WS) and Supravalvar Aortic Stenosis (SVAS) DNA and Tissue Bank

Williams SyndromeCardiovascular DiseaseSupravalvular Aortic Stenosis
National Heart, Lung, and Blood Institute (NHLBI)1,099 enrolled3 locationsNCT02706639
Recruiting
Phase 4

The Psychiatric and Cognitive Phenotypes in Velocardiofacial Syndrome

Williams SyndromeFragile X SyndromeVelocardiofacial Syndrome
The Chaim Sheba Medical Center400 enrolled1 locationNCT00768820
Recruiting
Not Applicable

Physical Activity and Community EmPOWERment Project

Williams SyndromeWAGR SyndromePrader-Willi Syndrome+10 more
University of North Carolina, Chapel Hill376 enrolled2 locationsNCT06740162
Recruiting
Not Applicable

Phonological Constraints on Language Development in Individuals With Williams Syndrome

Williams SyndromeLanguagePhonological Short-Term Memory+1 more
Centre Hospitalier Universitaire, Amiens130 enrolled1 locationNCT07285720
Recruiting

Rare Disease Patient Registry & Natural History Study - Coordination of Rare Diseases at Sanford

Rare DisordersUndiagnosed DisordersDisorders of Unknown Prevalence+188 more
Sanford Health20,000 enrolled2 locationsNCT01793168
Recruiting

Characterization and Natural History of Williams Syndrome and Other Chromosome 7q11.23 Variants

Williams SyndromeWilliams Beuren SyndromeWilliams Beuren Region Duplication+1 more
University of Pennsylvania2,000 enrolled1 locationNCT06930417