Treatments

Deleting FMR1, the gene mutated in fragile X syndrome, in subsets of mouse neurons leads to distinct features of the condition.

A new measure of motor skills suggests that insulin-like growth factor 1 improves movement in people with Phelan-McDermid syndrome.

A compound derived from marijuana may treat a severe form of epilepsy by dampening brain activity.

In children with autism, star-shaped brain cells may release inflammatory molecules that harm neurons.

Nine U.S. clinics are pooling their data to create a registry of people who have an extra copy of a region on chromosome 15 called 15q11-13, a genetic abnormality often found in people with autism.

A drug that has shown promise for treating fragile X syndrome may ease features of another condition associated with autism.

The longer a child receives applied behavioral analysis, the greater her gains in language, daily living and other skills.