Management

Patrick T. Mooney MD, Chairman & Chief Executive Officer

Dr. Mooney joined Echo in September 2007 as a result of the merger of Sontra Medical Corporation and then privately-held Echo Therapeutics, Inc. (ETI), for which he served as President, Chief Executive Officer and director from September 2006 through the date of the merger. Prior to joining ETI, Dr. Mooney was President, Chief Executive Officer and Chairman of Aphton Corporation (Nasdaq: APHT), where he had also served as Chief Medical Officer.  Prior to that, Dr. Mooney served as Senior Biotechnology Analyst at Thomas Weisel Partners, LLC, a full service merchant banking firm and as Senior Biotechnology Analyst at Janney Montgomery Scott, LLC, a full services investment banking firm. Dr. Mooney received his medical degree from the Jefferson Medical College of Thomas Jefferson University and trained in surgery at Thomas Jefferson University Hospital.

Shawn K. Singh, JD, President

Mr. Singh joined Echo in September 2007 as a result of the merger of Sontra Medical Corporation and ETI, for which he served as Chairman of the Board from September 2006 through the date of the merger and as President and director from September 2004 to September 2006. Mr. Singh has been working with life science companies for nearly 20 years. In addition to his role with Echo, Mr. Singh serves, on a part-time basis, as a Principal of Cato BioVentures and, on a part-time basis, as Chief Operating Officer and director of VistaGen Therapeutics. Prior to joining Echo, Mr. Singh served as Chief Business Officer of SciClone Pharmaceuticals (Nasdaq: SCLN), founder and Managing Director of Start-Up Law, President of Artemis Neuroscience and Corporate Finance Associate in the Silicon Valley offices of Morrison & Foerster. Mr. Singh is a member of the California State Bar.

Harry G. Mitchell, Chief Operating Officer and Chief Financial Officer

Mr. Mitchell joined Sontra Medical Corporation (now Echo) in January 2007 and served as Sontra's Interim Chief Executive Officer and Chief Financial Officer through its merger with ETI. Mr. Mitchell also served in several key executive roles as a consultant to Sontra prior to January 2007. Prior to joining Sontra, Mr. Mitchell served as President and Chief Executive Officer of MedTech Advances, Inc., a privately-held diabetes medical device company, Executive Vice President and a director of Boston Medical Technologies, Inc., a privately-held diabetes medical device company, and as a financial and management consultant to several other public and private companies. Mr. Mitchell is a member of the American Institute of Certified Public Accounts and the Massachusetts Society of Certified Public Accountants.