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The Armellino Center of Excellence for Williams Syndrome establishes a groundbreaking new hub for Williams syndrome clinical care throughout the lifespan here in Philadelphia, while also advancing important scientific discovery that is so vital to improving the outlook for individuals with Williams syndrome.  

What is Williams Syndrome? 

Williams Syndrome, which is caused by deletions on chromosome 7q11, affects one in every 7,500 people. Children with Williams syndrome generally have striking social abilities while also navigating intellectual disability, predisposition for cardiovascular disease, and a variety of other medical conditions. Seeking to develop a comprehensive program that meets the needs of patients with Williams syndrome and their families throughout all stages of life, Penn Medicine will collaborate closely with the Children’s Hospital of Philadelphia (CHOP) to enhance clinical and social services and advance scientific discovery to encompass the physiological, social, psychological, genetic, metabolic, and clinical complexity of Williams syndrome.