This book focuses on the emerging and expanding areas of research on ASD and their potential to lead to better diagnosis and more effective therapies. These areas include innovative and integrative approaches to genetic/genomic analyses and investigations of epigenetic contributions, including the role of noncoding RNAs, DNA methylation, alternative splicing, RNA editing, and faulty translation in gene regulation and expression, metabolic and immune dysfunction, co-morbidities, as well as hormonal and gene-environment interactions that may increase risk for ASD. Within each chapter, experts review cutting-edge research as well as provide their perspective on the future of research in their respective areas, including the challenges involved and the types of studies or advances that are necessary to move the field forward to achieve predicted translational goals.