Phelan-McDermid Syndrome Foundation

Phelan-McDermid Syndrome Foundation is doing everything it takes to make today better and the future brighter for everyone living with Phelan-McDermid syndrome — from the moment of diagnosis to the delivery of treatments and cures. Phelan-McDermid syndrome is a rare genetic disorder that can compromise many critical functions in a person’s body, from learning and communicating to eating and sleeping. Currently, there are no treatments or cures to address the underlying cause of Phelan-McDermid syndrome. Started by families who understand both the beauty and barriers of having a child with this life-altering condition, the Foundation is the largest and most trusted nonprofit organization dedicated to bringing hope, help and answers by supporting and connecting families, improving medical care, and driving research breakthroughs.