Jennifer Chien joined Rhythm Pharmaceuticals in November 2020 as Executive Vice President North America. Jennifer brings more than 20 years of strategy and commercial experience in rare diseases. Most recently, she was the Chief Commercial Officer at Krystal Biotech. Prior to that, she served as Vice President, Head of Genetic Diseases at Sanofi Genzyme, where she was responsible for the U.S. commercial strategy and implementation for seven brands and launch preparation within rare diseases. During her time at Sanofi Genzyme, Jennifer also held leadership roles as Vice President, Head of Global Nephrological Diseases, Senior Director of Global Marketing in Fabry disease, Senior Director of Global Market Access and International Marketing for the cardiovascular business, and Director of Business Development. Jennifer holds a Bachelor of Science degree from Massachusetts Institute of Technology and a master’s in public health from Harvard University.