We conclude by emphasizing the transformational role that genetic insights can play when investigating conditions for which nothing is currently known about their underlying biology. The idea that psychiatric disease might be purely “functional” can no longer be entertained. With ASD, we are entering an era where genetic dissection informs phenotypic heterogeneity and where biological insights are starting to emerge. The next few years will undoubtedly see a radical transformation of our understanding of the biological origins of all neuropsychiatric disorders.
