About 1 in 100 children in China has autism, suggesting the condition is more common in the country than previously thought.

No genetic test can say whether a person has autism, but it may point to a cause for the condition or for any related complications.

Parents of children with rare autism-linked mutations are banding together for support and to join forces with scientists, accelerating the pace of research.

Two new studies point to the possibility of detecting autism mutations before birth — along with all the ethical and logistical problems that may bring.

Australia has become the latest country to establish guidelines for diagnosing autism, but getting clinicians to comply may be difficult.

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

Autism doesn’t just affect boys and men, but research on the condition still predominantly focuses on them. Some scientists are finally beginning to include women and nonbinary people in their studies.

A study of more than 5 million people reveals the onset and prevalence of nine diagnoses that often accompany autism.

Autism may be just as common among children missing a segment of chromosome 16 as it is in those with an extra copy.

Doctors can now order a blood test that its makers say may help flag autism, but experts say the test is not appropriate for use in clinics.