Variants of autism

Some researchers are using genetic analysis to find out what the different kinds of autism come from. That there are different kinds seems almost obvious if you hang around with a number of them (e.g. the AUsome Social Group, though you could argue that the main effect is from one broken gene and the variations come from other broken genes. (Simplifying a bit) But their work suggests that there are different mutations, each of which can cause symptoms in the autism spectrum.

I hope the work pans out.