CHESHIRE, Conn.--(BUSINESS WIRE)--Alexion Pharmaceuticals, Inc. (Nasdaq: ALXN) today announced that researchers are scheduled to present data on Soliris® (eculizumab) as a treatment for patients with paroxysmal nocturnal hemoglobinuria (PNH) and atypical hemolytic uremic syndrome (aHUS), two debilitating, ultra-rare and life-threatening disorders caused by chronic uncontrolled complement activation, at the 53rd Annual Meeting of the American Society of Hematology (ASH). Abstracts summarizing these presentations were published today on the ASH web site and can be accessed using the links below. The ASH annual meeting will be held December 10-13, 2011, at the San Diego Convention Center in San Diego.