Paul H. Klingenstein has served as a member of our board of directors since our inception. He is the Managing Partner of Aberdare Ventures, a healthcare-focused venture capital firm he formed in 1999. Prior to founding Aberdare, Mr. Klingenstein worked in venture capital with Warburg Pincus and Accel Partners and was an advisor to the Rockefeller Foundation. Mr. Klingenstein currently serves on the boards of several private companies. Mr. Klingenstein has previously served on the boards of Anacor Pharmaceuticals, Inc. (NASDAQ: ANAC), Aviron Inc., Conatus Pharmaceuticals Inc. (NASDAQ: CNAT), EnteroMedics Inc. (NASDAQ: ETRM), Glycomed Inc., Isis Pharmaceuticals, Inc., now Ionis Pharmaceuticals, Inc. (NASDAQ: IONS), Pharmion Corporation (acquired in 2008), Viagene Inc., and Xomed Surgical Products Inc. He is currently a board member of the MacArthur Foundation, Nia Tero, and The Campaign Legal Center. He has also served on the boards of various educational and non-profit institutions. Mr. Klingenstein received an A.B. in anthropology from Harvard University and an M.B.A. from Stanford University.