Actually it does suggest a molecular subgroup of autism that could be trear able although it would be a very very rare occurance.
Here is the conclusion paragraph for those who cannot acess full paper
Quote:
Notably, besides representing a new subgroup of ASD, BCAA-related ASD may also represent a group of treatable conditions. Indeed, BCAA dietary administration in BCKDK null mice and humans (Novarino et al., 2012), as well as leucine and isoleucine i.c.v. injection in adult Tie2Cre;Slc7a5fl/fl mice lead to a significant improvement of the neurobehavioral abnormalities