I think what OP was trying to ask was why would a parent be willing to put their child at lethal risk, using an experimental treatment, for a condition that itself is not lethal? I don't have a kid with autism or a learning disability so I don't know how I'd handle it, but if I did, I'd probably choose to live with it and help the child make the best of it. I would not be reaching for someone's research project.
I think what OP was trying to ask was why would a parent be willing to put their child at lethal risk, using an experimental treatment, for a condition that itself is not lethal? I don't have a kid with autism or a learning disability so I don't know how I'd handle it, but if I did, I'd probably choose to live with it and help the child make the best of it. I would not be reaching for someone's research project.