Male bias in each autism and pediatric autoimmune ailment is assumed to involve hormonal perturbations in being pregnant or earlier childhood in the context of genetic control. These early molecular events, at a time of quick growth, are intimately connected to concurrent advancement in the brain and immune technique. It is proposed right here that these early regulatory events may possibly overlap between autism and autoimmunity in deciding male intercourse bias and may possibly provide proof of an etiological hyperlink amid autism, immune dysregulation, and autoimmune ailment. Autism Res 2012,••:••–••. Published 2012 Worldwide Modern society for Autism Study, Wiley Periodicals, Inc.†