Researchers at Tel Aviv University and elsewhere have developed therapy in the laboratory to treat Dravet syndrome – a life-threatening form of epilepsy in children caused by a mutation in the SCN1A gene. The scientists used a harmless virus containing normal SCNIA genes to “infect” the brain.
https://www.aftau.org/news_item/tau-discovery-may-help-children-suffering-from-dravet-syndrome/