Somatic mutations and clonal expansions in paroxysmal nocturnal hemoglobinuria.

Abstract excerpt

Paroxysmal nocturnal hemoglobinuria (PNH) is an acquired clonal hematopoietic stem cell disorder caused by a mutation of the X-linked PIGA gene, resulting in a deficient expression of glycosylphosphatidylinositol (GPI)-anchored proteins. While large clonal expansions of GPI(-) cells cause hemolytic symptoms, tiny GPI(-) cell populations can be found in healthy individuals and remain miniscule throughout life. The...

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