Exact Sciences has appointed Paul Limburg as co-chief medical officer. Limburg is a gastroenterologist and a professor of medicine at the Mayo Clinic, and serves as a co-leader of the Cancer Prevention and Control program within the Mayo Clinic Cancer Center. While at Mayo, he has also served as medical director of its global business solutions unit, and as medical director of several of its health and well-being programs. Limburg will advise Exact Sciences on research opportunities to inform, expand, and accelerate the adoption of effective colon cancer screening options such as Cologuard. He will continue to serve as a gastroenterologist with Mayo Clinic's Division of Gastroenterology and Hepatology, co-leader of the Cancer Prevention and Control program within Mayo Clinic Cancer Center, and principal investigator for the NCI-funded cancer prevention network clinical trials consortium.