People who have mutations in a gene called PHF21A tend to have a constellation of traits and conditions, including autism.

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

An experimental drug tamps down the expression of a gene duplicated in an autism-related condition and restores typical behavior in mice.

A single dose of cannabidiol, a component of marijuana, eases seizures and improves learning and sociability in mice with mutations in an autism gene called CDKL5.

A single seizure early in life leads to enduring behavioral problems, including diminished sociability, in mice.

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

Experimental surgeries to prevent seizures may help scientists understand the link between autism and epilepsy.

An experimental leukemia drug and a chemical in black pepper ease breathing and movement problems in a mouse model of Rett syndrome.

A drug that treats tumors and epilepsy in people with tuberous sclerosis complex does not boost their intelligence or ease autism traits.

Mice with extra copies of UBE3A, a gene linked to autism and related conditions, are susceptible to death from seizures.