Alexion Pharmaceuticals, Inc. announced that Francois Nader, M.D., has been appointed to the company's Board of Directors. The company also announced that Michele Burns has notified the Board that she will not stand for re-election at Alexion's 2018 annual meeting of shareholders. Dr. Nader served as President, Chief Executive Officer, and Executive Director of NPS Pharma from 2008 to 2015.