Which of the following is used to treat Paroxysmal nocturnal hemoglobinuria ?: (A) Eculizumab, (B) Avelumab, (C) Natalizumab, (D) Sarilumab
Answer is A. Eculizumab is monoclonal antibody against C5 complement used in the treatment of paroxysmal nocturnal hemoglobinuria.