UBE3A and movement disorder: Genes previously been reported to cause epilepsy with movement disorders (KCNA1, KMT2B, CACNA1A, FRRS1L, KCNQ2, SLC2A1, UBE3A, GABRG2, GNB1, FOXG1, or MECP2) were also observed in our study; however, epilepsy was not associated with KCNA1, KMT2B, SLC2A1, GNB1, or MECP2 in our cohort.