Blocking one form of an enzyme implicated in autism eases unusual behaviors and seizures in mice missing a top autism gene.

Researchers have used the gene-editing tool CRISPR to disable the MECP2 gene in marmoset embryos. The six such marmosets created seem to recapitulate aspects of Rett syndrome.

Delivery by cesarean section leads to subtle brain and behavioral alterations in mice, particularly those delivered prematurely.

The severity of autism tracks closely with that of attention deficit hyperactivity disorder.

The loss of 21 genes on chromosome 3 may substantially raise the risk of autism.

We asked five autism researchers to weigh in on whether there is a unique brain signature for autism and, if so, how to identify it.

Any study of postmortem brains must control for artifacts, which are pervasive in brain tissue.

Watch the complete replay of Christine Wu Nordahl discussing new ways to expand participation in autism brain-imaging studies.

A newly expanded database of information from people in the United Kingdom provides a detailed picture of genetic diversity.

Autistic children aged 2 to 4 have about 15 percent more fluid between their skull and their brain than their typical peers do.