Scientific Advisory Board Company Overview Leadership Board of Directors Scientific Advisory Board Steven L. McKnight, Ph.D. Michael S. Brown, M.D. David V. Goeddel, Ph.D. David H. Johnson, M.D. William G. Kaelin, Jr., M.D. Duojia Pan, Ph.D. William R. Sellers, M.D. George Trainor, Ph.D. STEVEN L. MCKNIGHT, PH.D. Scientific Founder and Chairman of the SAB MICHAEL S. BROWN, M.D. DAVID V. GOEDDEL, PH.D. DAVID H. JOHNSON, M.D. WILLIAM G. KAELIN, JR., M.D. DUOJIA PAN, PH.D. WILLIAM R. SELLERS, M.D. GEORGE TRAINOR, PH.D.