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William Sandborn, M.D., Chair of Prometheus’ SAB, is a board-certified gastroenterologist and Chief of Gastroenterology at UC San Diego (UCSD).  He is a professor in the Department of Medicine at UCSD School of Medicine, and in this role, he evaluates and develops new, modern therapies and diagnostic modalities for GI diseases.  He has published nearly 600 articles in medical journals and serves as a member of the Prometheus Biosciences Board of Directors.