Stern Stern RM RM Connell Connell NT NT Ravulizumab: a novel C5 inhibitor for the treatment of paroxysmal nocturnal hemoglobinuria Ravulizumab: a novel C5 inhibitor for the treatment of paroxysmal nocturnal hemoglobinuria Ther Adv Hematol Ther Adv Hematol 2019 2019 10.1177/2040620719874728 10.1177/2040620719874728. Here, C5 is linked to paroxysmal nocturnal hemoglobinuria.