CHESHIRE, Conn.--(BUSINESS WIRE)--Alexion Pharmaceuticals, Inc. (Nasdaq: ALXN) announced today that Soliris® (eculizumab), its first-in-class complement inhibitor, has been granted Orphan Medicinal Product Designation by the European Commission for the treatment of patients with atypical Hemolytic Uremic Syndrome (aHUS). AHUS is an ultra-rare, inherited, and life-threatening complement-inhibitor deficiency disease that often progresses to end-stage kidney disease or failure. The U.S. Food and Drug Administration granted orphan drug designation to Soliris for the same indication in May 2009. Soliris is not approved for the treatment of patients with aHUS.