In this study, we included 200 patients with confirmed SHE and identified IB/IA in four cases (2%) (IA, n = 3, 1.5%; IB, n = 1, 0.5%), described the features of IB/IA and showed that this subgroup of patients more frequently had FCD on brain MRI and pathogenic variants in genes related to the mTOR pathway. This evidence concerns the gene MTOR and sleep-related hypermotor epilepsy.