Interesting question, an answer to that could be groundbreaking. I suspect some forms of autism could benefit. But then you'd have to question whether it was the stem cell treatment or if it was simply early intervention's psychosocial impact.

Life expectancy for autistic people is actually disturbingly low. Taking their own lives, being victims of physical assault, victims of the justice system, undiagnosed health disorders... it's a bit grim. Physically, there are few seizure disorders and other co-morbid physical ailments, but aside from that they are indeed physically normal.