On Apr. 3, 2020, a new study in Neuron offers clues to why autism spectrum disorder (ASD) is more common in boys than in girls. NIH scientists found that a single amino acid change in the NLGN4 gene, which has been linked to autism symptoms, may drive this difference in some cases. The study was conducted at NIHﾒs National Institute of Neurological Disorders and Stroke.<./p>