SLC35A2 and Lennox-Gastaut syndrome: The same year, Sim et al. [55] also identified in six patients with Lennox-Gastaut syndrome different somatic pathogenic variants in SLC35A2. Moreover, Bonduelle et al. [54] identified nine somatic pathogenic variants in SLC35A2 from 20 children with mild malformation of cortical development with oligodendroglial hyperplasia in epilepsy (MOGHE).