Travolta and his wife denied that his son Jett had autism, as $cientology does not recognize autism as a real affliction. Also, Travolta has paid enough money to reach the top level of being "clear", so he is not supposed to have problems like an ill son, according to CoS. It was not until after his son's death that he finally defied the church and acknowledged his son probably had autism (but was not treated for it when he was alive).
Scient. and Autism