Alan W. Dunton, M.D. has served as our Chief Executive Officer since January 2007 and our president since July 2007. Since 2005, Dr. Dunton has served as the non-executive chairman of the board of directors of ActivBiotics, Inc., a privately held biopharmaceutical company. Previously, he was the president and chief executive officer of Metaphore Pharmaceuticals, Inc. from 2003 until 2005, when it merged with ActivBiotics. From 2004 until 2005, Dr. Dunton served as a member of the board of directors of Vicuron Pharmaceuticals until it was acquired by Pfizer, Inc. In 2002, Dr. Dunton served as president, chief operating officer and a director of Emisphere Technologies, Inc., a biopharmaceutical company. From 1994 to 2001, Dr. Dunton was a senior executive in various capacities in the Pharmaceuticals Group of Johnson & Johnson. From 1999 to 2001, Dr. Dunton was president and managing director of The Janssen Research Foundation, a Johnson & Johnson company. From 1998 to 1999, he served as group vice president of global clinical research and development of Janssen. Prior to joining Janssen, Dr. Dunton was vice president of global clinical research and development at the R.W. Johnson Pharmaceutical Research Institute, also a Johnson & Johnson company. Prior to joining Johnson & Johnson, Dr. Dunton held positions in clinical research and development at Syntex Corporation, CIBA-GEIGY Corporation and Hoffmann La Roche Inc. Dr. Dunton also presently serves as a member of the board of directors of the following public companies: Targacept, Inc.; Adams Respiratory Therapeutics, Inc.; and MediciNova, Inc. Dr. Dunton holds a M.D. degree from New York University School of Medicine, where he completed his residency in internal medicine. He also was a Fellow in Clinical Pharmacology at the New York Hospital/Cornell University Medical Center.