In a medical world first, doctors at Israel’s Schneider Children’s Medical Center in Petah Tikva have delivered gene therapy into the brain of an eight-month-old baby suffering from a rare, life-threatening form of genetic epilepsy. They injected healthy copies of the faulty WWOX gene.

https://www.timesofisrael.com/liveblog_entry/in-first-israeli-doctors-deliver-gene-therapy-into-brain-of-8-month-old-baby/