Eculizumab

Eculizumab (INN and USAN; trade name Soliris) is a humanized monoclonal antibody that is a terminal complement inhibitor. In people with paroxysmal nocturnal hemoglobinuria (PNH) it improves quality of life but does not appear to affect the risk of death. Its safety is unclear as of 2014. It is the first approved therapy for paroxysmal nocturnal hemoglobinuria. Eculizumab is also the first agent approved treatment of atypical hemolytic uremic syndrome (aHUS) with likely benefit based on two small trials.