All five participants in a clinical trial of a gene therapy for Angelman syndrome experienced leg weakness, leading sponsors to pause the study.

A tool that relies on video cameras and machine learning can identify mice that have mutations in a top autism gene by their behaviors. It also detects how a widely used autism drug affects their movements.

The first genetic analysis of multiple types of variants from people with autism or other neurodevelopmental conditions reveals hundreds of genes that may be linked to neurodevelopment.

An analysis of four molecular datasets shows a distinct signature, including changes in gene expression and chemical DNA modifications, in some autism brains.

Genome sequences from a research cohort of autistic African children and their families have revealed more than 4 million novel variants, some of which occur in genes not previously linked to the condition.

Rapid growth and inadequate standards in the ‘applied behavior analysis’ industry may put vulnerable children in the hands of poorly prepared technicians.

Girls with autism tend to start puberty earlier than their peers do, which may intensify their social difficulties and put them at an increased risk for bullying and mental health conditions such as depression.

Most of the large, spontaneous genetic mutations tied to autism are passed down from fathers. But, unlike with smaller mutations, a parent’s age is unlikely to up the rate at which they occur.

People with particularly low levels of FMRP, the protein lacking in those with fragile X syndrome, are more likely to also have autism and severe intellectual disability.

Autistic people have distinct patterns of brain development, which sometimes result in differences in brain structure. Here’s what we know about those differences.