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

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.

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

A website called GeneMatcher has helped researchers identify a new gene for intellectual disability, developmental delay and autism.

A new computational method sifts true mutations from spurious ones in a single cell’s genome.

One of the leading theories of autism posits that girls and women are biologically protected from the condition.

Finding a mutation linked to autism traits can have life-changing consequences for autistic individuals and their families.

Genetic tests for people with autism are far from routine and don’t always yield results, but the information they offer can change lives.

In autism research, as in other fields, small sample sizes can lead to false findings. The size of the sample needed for statistical significance depends on the type of study.

Genetic variants across the genome contribute to about 8 percent of the risk for certain developmental conditions — much more than previously thought.