New findings hint at why drugs that work in mouse models of fragile X syndrome have not been effective in people.

A molecule made by mitochondria, the energy factories of cells, might help doctors forecast the impact of mutations in a top autism gene.

The largest analysis of sequences from autistic people and their families implicates 184 genes in the condition — nearly doubling the previous estimate.

Molecular biologist Jonathan Mill is probing gene expression’s role in autism in uncharted territory — the fetal human brain.

SETD5, a leading candidate for autism risk, may control thousands of genes by modifying a protein involved in packaging DNA.

Deleting the mutation from an autism gene may reverse some autism traits in mice, according to a new study. But the results may be a fluke.

An analysis of genetic sequences from nearly 500 people with autism and their relatives has linked 13 new genes to the condition. It has also uncovered a genetic cause for autism in about 10 percent of the autistic participants.

New findings call into question a fundamental assumption about how genes are regulated.

Tuberous sclerosis provides a unique opportunity to understand autism because about half of people with that single-gene condition also have autism.

An online resource reveals all major cell types in the developing human brain during the period in which autism is thought to arise.