CDKL5 and autism: All these genes were listed in SFARI (https://gene.sfari.org/), a comprehensive database including genes associated with autism, and six of them (KANSL1, SLC9A6, CDKL5, SYNGAP, SCN1A, and FOXP1) are currently classified in the first category that includes those that have been clearly implicated in ASD with high confidence.