New antiepileptic drugs designed for enhancing GABAergic inhibition, s
uch as vigabatrin (VGB) may be effective in Angelman syndrome (AS), be
cause associated convulsions could be related to a reduced GABA-recept
or density or receptor abnormality. From our preliminary experiences i
n four children with AS treated with VGB, we conclude that it may indu
ce and increase seizures in patients with AS.