" /> Polycythemia vera - CISMeF





Preferred Label : Polycythemia vera;

Symbol : PV;

CISMeF acronym : PRV; PV;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : Polycythemia rubra vera; PRV;

Description : Polycythemia vera, the most common form of primary polycythemia, is caused by somatic mutation in a single hematopoietic stem cell leading to clonal hematopoiesis. PV is a myeloproliferative disorder characterized predominantly by erythroid hyperplasia, but also by myeloid leukocytosis, thrombocytosis, and splenomegaly. Familial cases of PV are very rare and usually manifest in elderly patients (Cario, 2005). PV is distinct from the familial erythrocytoses (see, e.g.,;

Inheritance : Somatic mutation;

Molecular basis : Caused by somatic mutation in the janus kinase 2 gene (JAK2, 147796);

Laboratory abnormalities : Increased PRV-1 (162860) mRNA; Normal or decreased serum erythropoietin (EPO, 133170); Erythroid colony-forming units show spontaneous growth in the absence of EPO; Normal arterial oxygen saturation;

Prefixed ID : #263300;

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25/07/2025


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