Nasim Vasli, Ph.D., Centre for Addiction and Mental Health, University of Toronto, Canada, will assess 100 Iranian patients with autism spectrum disorder (ASD and their parents, all from related-by-blood (consanguineous marriages, in order to probe genetic causes of their disorder and to detect new autosomal recessive (AR genes via whole-genome sequencing. In autosomal recessive diseases, two copies of an abnormal gene must be present for a disease or trait to develop. The team will attempt to further validate any AR genes in a cohort of 200 ASD cases and their parents, to assess which of the genes are most frequently disrupted.