Jesus...it's weird because I watched Carrie for the first time last night and I remember thinking "John Travolta plays a very unconvincing teenager in this film". That's really sad news though. RIP.
Shit, this is pretty scary, as my younger 16 year old brother also has both autism and epilepsy, like Jett. May he rest in peace.
This is absolutely awful, and the more information found out, the worse it sounds. Apparently he was on meds for black-out fits, but it was stopped when they saw it "wasn't working". Also, the Travoltas insist that he had Kawasaki disease, and not autism, but there are doubts about that. RIP.