Neurogenomics Division, Translational Genomics Research Institute, Phoenix, AZ 85004, USA. dstephan@tgen.org
In this issue of AJHG, Alarcón et al.,(1) Arking et al.,(2) and Bakkaloglu et al.(3) identify a series of functional variants in the CNTNAP2 gene that unequivocally implicate this gene as causing Type 1 autism in the general population.