KCNT1 and developmental and epileptic encephalopathy: Moreover, current research confirms and expands the genotype-phenotypic correlation of the following conditions: PCDH19-related epilepsy [47], GRIN2D-related developmental and epileptic encephalopathy [48], KCNT1-related epilepsy [49], CHRNA2-related autosomal dominant sleep-related hypermotor epilepsy [50], SCN1A-related epilepsy [51], SLC12A5-related epilepsy [52].