GABRG2 and Bilateral tonic-clonic seizure: GABRG2 (gamma-aminobutyric acid receptor, gamma-2): In a cohort of 5 patients harbouring a recurrent c.316G>A; p.A106T pathogenic variant, two had intractable, neonatal-onset epilepsy (not further characterized: one; ictal apnea: one), followed by focal versive, myoclonic and tonic-clonic seizures associated with hypotonia, severe DD, cortical visual impairment, and stereotypies in one [60].