SCN1A, SCN2A, CTNNA3, and CNTNAP2 found in ASD patients; RELN and DLG2 found in AT patients; GPHN found in TSC patients; and GRID2 KHDRBS2, and SYNE1 found in SZ patients are revealed to be associated with ASD. This evidence concerns the gene SCN2A and ataxia telangiectasia.