Spectrum: Autism Research News

Differences in brain structure may distinguish boys with relatively mild features of fragile X syndrome from those with a severe form of the condition.

A reanalysis of data from more than 2 million children in Sweden suggests inherited genetic factors account for 83 percent of autism risk.

Mutations in MECP2, the gene mutated in Rett syndrome, may alter the proportions and activity of sensory neurons in rats.

Children with autism who take certain medications have different patterns of brain connectivity than do unmedicated children with the condition.

Genes are bigger contributors to autism features than are environmental factors, according to a study of nearly 39,000 twins.