NALCN and epilepsy: Thirty-five patients manifested epilepsy without any other comorbidity and seven of them (20.0%) carried variants in six genes, namely KCNQ2, NALCN, PAK3, PRRT2, SCN1A, and SLC2A1 that are among the well-known genes causing epilepsies or syndromes including epilepsy (Wang et al., 2017).