Mutations in certain genes contribute specifically to autism, and others only to developmental delay.

The number of top autism genes has risen from 65 to 99, based on an analysis of nearly 35,000 sequences. And researchers are seeing the first hints of autism risk variants in the regions between genes.

To find variants between genes that contribute to autism, researchers may need thousands more whole genomes than they have now.

Mutations in a gene called ADNP lead to a syndrome that includes autism, intellectual disability and problems with the gut, eyesight, heart and brain.

The gene-editing tool CRISPR may cause thousands of off-target mutations, but critics say it’s way too soon to accuse it of infidelity.

Two new online resources help researchers predict how mutations alter protein structure.

A new analysis of the genomes of more than 11,000 people reveals regions that have few mutations, indicating they have important functions.

Some children with autism inherit rare mutations in noncoding DNA from their unaffected fathers.