The Simons Foundation Powering Autism Research for Knowledge, or SPARK , is a landmark autism research project in the U.S. This long-term, online study is designed to build a research community of tens of thousands of individuals with autism and their families. Participants are asked to share medical and genetic information with scientists and to agree to be contacted about future research studies. The data shared with SPARK researchers will power important new autism research that aims to advance the understanding of autism and provide meaningful information and resources to participants.