KCNQ2 (OMIM 602235) mutations can contribute to benign familial neonatal convulsions (BFNC) (Biervert et al., 1998; Leppert et al., 1989; Neubauer et al., 2008), benign familial neonatal‐infantile seizures (BFNIS), benign familial infantile seizures (BFIS), and neonatal‐onset epileptic encephalopathy (EE) (Kato et al., 2013; Weckhuysen et al., 2013, 2012). This evidence concerns the gene KCNQ2 and benign familial infantile epilepsy.