ATP1A3 and epilepsy: By meaning ATP1A3 mutation, epilepsy was more frequent in cases with p.Glu815Lys mutation (89%, 8/9), in respect to 60% (6/10) with p.Asp801Asn and about 53% (9/17) with other mutations (p = 0.09 compared to the p.Glu815Lys mutation group).