Intellectual Developmental Disorder with Autistic Features and Language Delay, with or Without Seizures, also known as iddalds, is related to autism spectrum disorder. An important gene associated with Intellectual Developmental Disorder with Autistic Features and Language Delay, with or Without Seizures is TANC2 (Tetratricopeptide Repeat, Ankyrin Repeat And Coiled-Coil Containing 2). Affiliated tissues include brain and tongue, and related phenotypes are intellectual disability and delayed speech and language development