Jonathan Rosand is Professor of Neurology at Harvard, appointed to the J.P. Kistler Endowed Chair in Neurology at Massachusetts General Hospital and an Associate Member of the Broad Institute. He established the ISGC in 2007, convening the founding members at the Broad on the eve of the publication of the first large-scale genome-wide association studies for a complex disease (diabetes) in Science. He then served as chair of the ISGC from 2007 through 2010 and the inaugural chair of the ISGC steering committee when it was formally created in 2011. His laboratory continues to support the ISGC convener. In addition to being senior author of the ISGC’s first GWAS of hemorrhagic stroke as well as the landmark NINDS-SiGN GWAS of ischemic stroke, Jonathan launched the ISGC’s Cerebrovascular Disease Knowledge Portal. His research group at the MGH Center for Genomic Medicine and the Broad Institute has served as a training ground for many investigators who have gone on to develop internationally distinguished research programs of their own, including ISGC members Natalia Rost, Jordi Jimenez-Conde, Christopher Anderson, Alessandro Biffi, Guido Falcone, and Chia-Ling Phuah.