Recent genetic studies have revealed copy‐number variations (CNV) in many genes in association with developmental brain disorders, intellectual disability, epilepsy, autism spectrum disorder, and schizophrenia.68KCTD13 (also known as BACURD1 or POLDIP1) is located in the 16p11.2 locus, which is known to contribute to risk of multiple neuropsychiatric disorders. This evidence concerns the gene KCTD13 and autism spectrum disorder.