| A neurological disorder with characteristics of moderate to severe intellectual disability that is evident in early childhood. Early manifestations include delayed development of speech and motor skills, hypotonia, developmental regression, recurrent epilepsy, hyperactivity and autism spectrum disorder. Caused by mutations in the SYNGAP1 gene preventing the production of functional SynGAP protein from one copy of the gene which results in reduced protein activity in cells. May be inherited in an autosomal dominant manner or as a new mutation in the gene. |
