AUTS2 and autism spectrum disorder: Although the existing literature has established a relationship between various psychiatric disorders, including schizophrenia and ASD, and various AUTS2 single nucleotide variants, to our knowledge, only one mutation of two-base pair deletion has been identified in the literature in a male patient with syndromic ID, who has a moderate ID (IQ was tested at 45) with severe language delay and an autism spectrum disorder.