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

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.

Chronic exposure to inflammation in the womb alters autism gene expression and disrupts social behavior in male mice, but not females.

Scientists used the gene-editing tool CRISPR to create two marmosets lacking MECP2, the gene mutated in Rett syndrome.

People with autism have more gray matter — or neuronal matter — in their brains overall than their typical peers do.

Two new methods for building ‘mini-brains’ may help researchers study how early brain development differs in people with autism.