Intellectual Developmental Disorder with Language Impairment and with or Without Autistic Features, also known as intellectual developmental disorder with language impairment with or without autistic features, is related to intellectual disability-severe speech delay-mild dysmorphism syndrome. An important gene associated with Intellectual Developmental Disorder with Language Impairment and with or Without Autistic Features is FOXP1 (Forkhead Box P1). Affiliated tissues include tongue and kidney, and related phenotypes are obesity and intellectual disability