Genome-wide association studies (GWASs) have demonstrated various risk loci for ASD such as FOXP1 at 3p13, ATP2B2 at 3p25.3 [Autism Spectrum Disorders Working Group of the Psychiatric Genomics Consortium, 2017(Autism Spectrum Disorders Working Group of The Psychiatric Genomics Consortium., 2017)]. Here, ATP2B2 is linked to autism spectrum disorder.