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December 8, 2025BloodOpen Access

Functional characterization of a novel germline JAK2 R989fs mutation

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Authors

JSJihyun SongLLLucie Lanikova

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Overview

Analysis reveals JAK2 R989fs mutation enhances erythrocyte proliferation associated with thrombocytosis and apoptosis through elevated EPO.

Key Points

  • JAK2 R989fs mutation enhances erythroid progenitor proliferation, leading to increased thrombocytosis.
  • Next generation sequencing identified the mutation, resulting in a truncated protein disrupting the kinase domain.
  • Erythropoietin levels were low-normal, indicating abnormal erythroid differentiation, while hemoglobin levels remained stable.
  • Increased apoptosis rates were observed, suggesting complex interactions in erythrocyte development within myeloproliferative neoplasms.

Cite This Study

Song et al. (2025) studied this question.

synapsesocial.com/papers/69362f7f4fa91c937236e5a7https://doi.org/10.1182/blood-2025-5541
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1PO51 | Thrombocythemia associated with a non-canonical JAK2 mutation: a case report2025
  2. 2Germline Jak2-R1063H mutation interferes with normal hematopoietic development and increases risk of thrombosis and leukemic transformation2025 · 3 citations
  3. 3The V617F mutation in JAK2 renders myeloid cells more sensitive to IL-6-mediated gp130 signaling2025
  4. 4Germline JAK2 R564Q variants presenting as hereditary thrombocytosis: case report2025
  5. 5Discovery of JAK2V617F mutant specific allosteric inhibitors for the treatment of myeloproliferative neoplasms2025 · 2 citations