ReviewHematology. American Society of Hematology. Education Program2025
JAK2 wild-type erythrocytosis: concept, differential diagnosis, diagnostic steps, and treatment approaches.
Review in Hematology. American Society of Hematology. Education Program, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
1 citing paper in PubMed.
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
JAK2 unmutated/wild-type erythrocytosis is a prevalent condition encompassing a wide spectrum of hereditary and acquired entities. It is conventionally defined by the same hemoglobin/hematocrit thresholds as for polycythemia vera. Incidence has been reported to be between 0.13% and 4.1%. The most clinically relevant step in the workup of erythrocytosis is the exclusion of polycythemia vera through JAK2 mutation screening. Consideration of relative polycythemia, normal outliers, and the influence of erythropoietic drugs and comorbidities is also imperative. Distinguishing long-standing from newly acquired erythrocytosis further streamlines the diagnostic process. Hereditary erythrocytosis (HE) is lifelong and typically associated with a positive family history. Subnormal serum erythropoietin (EPO) suggests an EPO receptor mutation. Otherwise, oxygen tension at 50% hemoglobin saturation (p50) discerns between high oxygen-affinity hemoglobin variants, 3-bisphosphoglycerate deficiency, methemoglobinemia, and PIEZO1 mutations (low p50) and germline oxygen-sensing pathway/other rare mutations (normal p50). Acquired erythrocytosis results from hypoxia-driven factors (eg, cardiopulmonary, altitude, renal artery stenosis) and other mechanisms of EPO overproduction (eg, EPO-secreting tumors) or hypersensitivity, as well as EPO-independent mechanisms. Drugs (eg, sodium glucose co-transporter-2 inhibitors, testosterone) are also common causes. Idiopathic erythrocytosis is a diagnosis of exclusion, increasingly attributed to underlying genetic mutations/polymorphisms. There are currently no evidence-based treatment guidelines. Low-dose aspirin and/or phlebotomy (with frequency determined by symptom relief) might be considered on an individualized basis in the presence of hyperviscosity symptoms, cardiovascular comorbidities, and/or a history of thrombosis. Aggressive control of cardiovascular risk factors is recommended in all. A graphic abstract representation is provided in Figure 1.
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