UBE3A and nervous system disorder: The regions of the 3 CNVs are located in chromosome Xp22.31, 15q11.2–13.1 and 17p11.2, and harbored genes associated with neurological diseases including GABRB3, UBE3A, MAGEL2, RAI1, ALDH3A2, ATPAF2 according to the database of Online Mendelian Inheritance in Man (OMIM).