GBA1 and myoclonic epilepsy: Glucocerebrosidase activity was markedly reduced, and a targeted myoclonic-epilepsy gene panel identified two GBA1 variants: c.907C > A (p. Leu303Ile) and c.1505G > A (p. Arg502His), indicating a presumed compound-heterozygous state consistent with neuronopathic GD type 3.