Paroxysmal nocturnal hemoglobinuria (PNH) is an acquired clonal hematopoietic stem cell disorder characterized by corpuscular hemolytic anemia, bone marrow failure and frequent thrombotic events. The disease is MONDO_0100244 (paroxysmal nocturnal hemoglobinuria). Also known as: Marchiafava-Micheli disease, PNH, acquired paroxysmal nocturnal hemoglobinuria, hereditary paroxysmal nocturnal hemoglobinuria, inherited paroxysmal nocturnal hemoglobinuria, paroxysmal hemoglobinuria.