Preston Klassen, M.D., MHS

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President and Chief Executive Officer

Dr. Klassen has served as our President and Chief Executive Officer and as a member of our board of directors since June 2020. From March 2017 to June 2020, Dr. Klassen served as Executive Vice President, Head of Research and Development and Chief Medical Officer of Arena Pharmaceuticals, Inc. From June 2016 to March 2017, he was Chief Medical Officer of Laboratoris Sanifit S.L., a biotechnology company, and prior to that, from November 2009 to May 2016, was Executive Vice President, Head of Global Development at Orexigen Therapeutics, Inc. Dr. Klassen also held several positions of increasing responsibility at Amgen Inc., including Therapeutic Area Head for Nephrology. Before joining Amgen, he was a faculty member in the Division of Nephrology at Duke University Medical Center. Dr. Klassen holds a B.S. in Chemistry from Central University of Iowa. Dr. Klassen received his medical degree from the University of Nebraska College of Medicine and completed his residency in internal medicine, fellowship in nephrology, and Master of Health Sciences degree at Duke University.