The National Institutes of Health (NIH) is offering a funding opportunity for research on Autism Spectrum Disorders (ASD) through the R01 Clinical Trial Optional grant mechanism. This initiative aims to support research that elucidates the etiology, epidemiology, diagnosis, and optimal service delivery methods related to ASD, emphasizing the importance of preliminary data in applications. The funding is intended to foster innovative studies addressing critical public health questions, including genetic and environmental influences on ASD, with a maximum project duration of five years. Interested applicants, including various educational institutions and community organizations, must submit their proposals by January 25, 2025, and can find further details at the provided NIH link or contact the NIH OER Webmaster at FBOWebmaster@OD.NIH.GOV for assistance.