Variants in these patients and associated phenotypes are described as follow; two variants of SCN1A (c.1703G > A/p.R568Q, c.4176T > A/p.N1392K) were identified in two patients of unclassified EEES and one variant of ARX (c.1600G > C/p.A534P) in a West syndrome patient. The gene discussed is SCN1A; the disease is infantile spasms.