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Jean Deleage, Ph.D. has served as a director and the chairman of our Board of Directors since October 2006 and previously served as a director of TPTX, Inc., our subsidiary, from May 2000 to February 2007. Dr. Deleage is a founder and managing director of Alta Partners, a venture capital firm investing in information technologies and life science companies, since founding the firm in February 1996. From1979 to 1996, Dr. Deleage was a founder and a managing partner of Burr, Egan, Deleage & Co., a venture capital firm of which he was a founder. In 1971, Dr. Deleage was the founder of Sofinnova, a venture capital organization in France, and in 1976 formed Sofinnova, Inc., Sofinnova�s U.S. subsidiary. Dr. Deleage currently serves as a director of IDM Pharma, Inc., Innate Pharma SA, Kosan Biosciences Incorporated, LifeCycle Pharma A/S, Rigel Pharmaceuticals, Inc. and several privately held companies. Dr. Deleage received a Baccalaureate in France, a M.A. in electrical engineering from Ecole Superieure d�Electricite, and a Ph.D. in economics from the Sorbonne. | 