DLG2 and Neurodevelopmental delay: The higher amount of male than female patients in the DLG2 cohort (13 male to five female and 11 unknown out of 29; Table 1), with a penetrant NDD phenotype (11 to three and ten unknown out of 24), with a single rare CNV (five to one and three unknown out of nine), and harboring a maternally inherited aberration in DLG2 (three to 0 and one unknown out of four) supports the NDD female protective hypothesis studied in other cohorts [72–74].