Four new techniques expand the repertoire of the gene editor CRISPR.

Mice with a mutation in a top autism gene may have altered levels of certain gut bacteria; feeding the mice one of these bacterial species eases some of their troubles.

People with mutations in SHANK3 have milder features than do those missing a chunk of DNA that includes the gene.

More boys than girls have autism; diagnostic biases and genetic factors may explain the skewed sex ratio.

Mice and people missing a copy of a chromosomal region called 16p11.2 show similar patterns of weak brain connections.

Mice with one inactivated copy of CHD8, a top autism gene, show an unusually high degree of synchrony in neural activity between brain regions.

A new method helps researchers map the patterns of chemical tags in large batches of cells.

Harmful mutations in a gene called NAA15 may lead to autism, intellectual disability and delayed speech and motor function.