How was paroxysmal nocturnal hemoglobinuria (PNH) previously classified erroneously?

Updated: May 20, 2021
  • Author: Emmanuel C Besa, MD; Chief Editor: Sara J Grethlein, MD, FACP  more...
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Paroxysmal nocturnal hemoglobinuria (PNH) was previously classified as purely an acquired hemolytic anemia due to a hematopoietic stem cell mutation defect. This classification was abandoned because of the observation that surface proteins were missing not only in the RBC membrane but also in all blood cells, including the platelet and white cells.

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