Wilfred E. Jaeger M.D.

Partner, Three Arch Partners

Wilfred E. Jaeger, M.D. has served as a member of our board of directors since May 2006. Dr. Jaeger co-founded Three Arch Partners, a venture capital firm, in 1993 and has served as a Partner since that time. Prior to co-founding Three Arch Partners, Dr. Jaeger was a general partner at Schroder Ventures. He is also a member of the board of directors of Threshold Pharmaceuticals, Inc., a public pharmaceutical company, as well as numerous private companies. Dr. Jaeger received a B.S. in Biology from the University of British Columbia, his M.D. from the University of British Columbia School of Medicine and an M.B.A. from Stanford University. In addition to representing one of our principal stockholders, we believe that that Dr. Jaeger’s financial and medical knowledge and experience allows him to be a key contributor to our board of directors.