Dr. Nancy Chang serves as Chief Executive Officer & Chairperson of the Board at Ansun Biopharma. Nancy was the Chairperson and Senior Managing Director of Caduceus Asia Partners at OrbiMed Advisors from 2007 to 2012. From 1987 to 2007, Dr. Chang served as Co-Founder, President and Chairman of Tanox, Inc., which was sold to Genentech in 2007. Prior to founding Tanox, Dr. Chang held several leadership positions at Centocor, now a division of Johnson & Johnson. She was also an Associate Professor at Baylor College of Medicine. She has served on the board of a number of companies, including SciClone Pharmaceuticals, Inc., Charles River Laboratories International, Inc., Applied Optoelectronics Inc. Nancy received her Doctorate in Biological Chemistry from Harvard University.