Board of Directors
Stephen J. Hoffman, M.D., Ph.D. Chairman of the Board
Paul L. Berns President and Chief Executive Officer
Cecilia Gonzalo Managing Director, Warburg Pincus LLC
Jeffrey R. Latts, M.D. Pharmaceutical Industry Consultant
Jonathan S. Leff Partner, Warburg Pincus LLC
David M. Stout Pharmaceutical Industry Consultant


Stephen J. Hoffman, Ph.D., M.D. Chairman of the Board of Directors

Dr. Hoffman has served as a Managing Director of Skyline Ventures, a venture capital firm, since May 2007. From January 2003 to March 2007, Dr. Hoffman was a General Partner of TechnoVenture Management, a venture capital firm. He has served as a member of the Board of Directors since 1994 and as the Company’s Chairman of the Board since December 2001. From July 1994 to December 2001, Dr. Hoffman served as the Company’s President and Chief Executive Officer. Prior to that, from inception to 1994, Dr. Hoffman served as a consultant to the Company’s investor group. From 1990 to 1994, he completed a fellowship in clinical oncology and a residency/fellowship in dermatology, both at the University of Colorado. Dr. Hoffman was the scientific founder of Somatogen Inc., a biopharmaceutical company, where he held the position of Director of Corporate Research and Vice President of Science and Technology from 1987 to 1990. Dr. Hoffman received his Ph.D. in bio-organic chemistry from Northwestern University and his M.D. from the University of Colorado School of Medicine.




Paul L. Berns President and Chief Executive Officer

Mr. Berns has served as the Company’s President and Chief Executive Officer, and as a member of the Board of Directors, since March 2006. Prior to joining the Company, Mr. Berns was a self-employed consultant to the pharmaceutical industry from July 2005 to March 2006. From June 2002 to July 2005, Mr. Berns was President, Chief Executive Officer and a director of Bone Care International, Inc., a specialty pharmaceutical company that was acquired by Genzyme Corporation in 2005. Prior to that, from 2001 to 2002, Mr. Berns served as Vice President and General Manager of the Immunology, Oncology and Pain Therapeutics business unit of Abbott Laboratories, a pharmaceutical company. From 2000 to 2001, he served as Vice President, Marketing of BASF Pharmaceuticals-Knoll, a pharmaceutical company, and from 1990 to 2000, Mr. Berns held various positions, including senior management roles, at Bristol-Myers Squibb Company, a pharmaceutical company. Mr. Berns is a director of XenoPort, Inc. Mr. Berns received a B.S. in Economics from the University of Wisconsin.




Cecilia Gonzalo Managing Director, Warburg Pincus LLC

Ms. Gonzalo, is a Managing Director at Warburg Pincus LLC and a General Partner of Warburg Pincus & Co., where she focuses on healthcare investments in the biotechnology, pharmaceuticals and healthcare services sectors. Prior to joining Warburg Pincus in 2001, Ms. Gonzalo worked at Goldman Sachs in the Investment Banking Division focusing on corporate finance and mergers and acquisitions transactions in Latin America, as well as in the Principal Investment Area focusing on investments in the region. Ms. Gonzalo also serves as a director of Rib-X Pharmaceuticals and Talon Therapeutics, Inc. Ms. Gonzalo received a B.A. cum laude in Biochemical Sciences from Harvard College and an M.B.A. from Harvard Business School.




Jeffrey R. Latts, M.D. Pharmaceutical Industry Consultant

Mr. Latts has served as a member of the Board of Directors since April 2007. Since January 2007, Dr. Latts has been a self-employed consultant to the pharmaceutical industry. Previously, Dr. Latts served as Executive Vice President of Exelixis, Inc., a biotechnology company, from January 2006 to January 2007, and as Senior Vice President of Exelixis, Inc. from July 2001 to December 2005. He also served as Chief Medical Officer of Exelixis, Inc. from July 2001 to September 2006. Prior to that, Dr. Latts held key management positions with Berlex Laboratories, a pharmaceutical healthcare company, where he served as Chief Medical Officer from 1995 to 2001, and Vice President, Clinical Research and Development from 1990 to 2001. Prior to that, Dr. Latts served as Vice President of Clinical Research at Wyeth Ayerst Research, a division of Wyeth Laboratories. He began his career in the pharmaceutical industry with the Parke-Davis Pharmaceutical Division of Warner Lambert. In over 25 years in the pharmaceutical industry, Dr. Latts has been involved in numerous investigational new drug application submissions and has successfully initiated early to late stage clinical trials for multiple disease areas, including cancer, immunology, central nervous system and metabolic diseases. Dr. Latts received a B.S. in medicine and an M.D. from the University of Minnesota.




Jonathan S. Leff Partner, Warburg Pincus LLC

Mr. Leff has served as a member of the Board of Directors since March 2005. Mr. Leff serves as a General Partner of Warburg Pincus & Co. and as a Managing Director and Member of Warburg Pincus LLC. Mr. Leff joined Warburg Pincus in 1996 and is responsible for the firm’s investment efforts in biotechnology and pharmaceuticals. Prior to joining Warburg Pincus, he was a consultant at Oliver, Wyman & Co. Mr. Leff is currently a director of Inspire Pharmaceuticals, Inc., InterMune, Inc., ZymoGenetics, Inc. and several private companies. Mr. Leff received his A.B. in Government from Harvard College and his M.B.A. from Stanford University Graduate School of Business.

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David M. Stout Pharmaceutical Industry Consultant

Mr. Stout has served as a member of the Board of Directors since March 2009. Mr. Stout most recently served as President, Pharmaceuticals at GlaxoSmithKline, where he was responsible for the company’s global pharmaceutical operations, from January 2003 to February 2008. From 1999 to January 2003, Mr. Stout served as President, U.S. Pharmaceuticals at GlaxoSmithKline. From 1996 to 1998, Mr. Stout served as President and Director, Sales and Marketing-U.S. for SmithKline Beecham. Prior to that, Mr. Stout was President of Schering Laboratories, a division of Schering-Plough Corporation, from 1994 to 1996. Mr. Stout also held various executive and sales and marketing positions with Schering-Plough Corporation from 1979, when he joined the company, until 1994. Mr. Stout is a director of Airgas, Inc. Mr. Stout received his B.A. in biology from McDaniel College.