People with attention deficit hyperactivity disorder may carry certain rare, harmful mutations in many of the same genes as people with autism.

A new technique uses ultrasound instead of light to detect gene expression in cells.

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

A collection of rare genetic variants associated with autism and schizophrenia also seem to increase a person’s odds of having attention deficit hyperactivity disorder.

Autistic people who carry mutations in a gene called PTEN have distinct behavioral and motor problems.

A new method scans gene expression in live cells and could help scientists study autism genes.

Researchers have identified a distinctive pattern of gene expression in the white blood cells of young autistic boys.

Mutations in the gene CSDE1 lead to a constellation of developmental delays and conditions, including autism, according to a new study.

Some traits of fragile X syndrome may be due to problems with mitochondria, the cell’s energy factories.

Rats missing UBE3A, the gene mutated in people with Angelman syndrome, squeak frequently but tend not to be responsive to the play and squeaks of other rats.