Blood levels of PTEN protein and associated molecules could eventually help diagnose autism and other neurological conditions — and predict their outcomes.

Misaligned gene expression maps suggest that some autism-linked genes play distinct roles in mouse and human brains.

Muffling expression of an autism-linked gene in a key song-related area of the brain renders young zebra finches unable to learn songs from older birds.

Mice with a mutation in their mitochondrial DNA show altered brain activity, repetitive behaviors and reduced sociability, according to a new study.

Mutations in any of 10 autism-linked genes in frogs lead to the same overabundance of brain cells that develop into neurons; the sex hormone estrogen lowers this excess.

A glowing protein tracks serotonin levels and location in the brains of living mice and could yield clues to the neurotransmitter’s role in autism.

The barriers to an autism diagnosis are especially challenging for women and girls. A big part of the problem is still the perception of autism as a ‘male’ condition.

Genetic variants that contribute to autism may also be involved in attention deficit hyperactivity disorder and Tourette syndrome, according to a new study.

People with mutations in distant chromosomal regions often share a range of autism traits, even if they do not meet the diagnostic threshold for autism.

Aripiprazole, an antipsychotic medication marketed as Abilify, eases aggressive behavior in autistic children, but questions remain about its side effects.