What is the most common cause of death in paroxysmal nocturnal hemoglobinuria (PNH)?

Updated: May 20, 2021
  • Author: Emmanuel C Besa, MD; Chief Editor: Sara J Grethlein, MD, FACP  more...
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Answer

Thrombosis is the most common cause of death in persons with PNH, accounting for 50% of the mortality from the disease. The most frequent sites of thrombosis include the hepatic, pulmonary, cerebral, and deep and superficial veins, as well as the inferior vena cava. Approximately 15%-20% of thrombosis in PNH is arterial. [13] Interestingly, there is a close correlation between thrombosis and a large PNH clone, and clone size correlates with hemolytic rates.


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