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The JAK 2 gene signals a protein that promotes the growth of cells. The protein is part of a signaling pathway called the JAK/STAT pathway. The JAK2 protein controls the production of blood cells from hematopoietic stem cells which are located in the bone marrow and can eventually become platelets, red blood cells or white blood cells.
Janus kinase 2 (commonly called JAK2) is a non-receptor tyrosine kinase.It is a member of the Janus kinase family and has been implicated in signaling by members of the type II cytokine receptor family (e.g. interferon receptors), the GM-CSF receptor family (IL-3R, IL-5R and GM-CSF-R), the gp130 receptor family (e.g., IL-6R), and the single chain receptors (e.g. Epo-R, Tpo-R, GH-R, PRL-R).
Essential thrombocythemia (ET) is diagnosed with a platelet count greater than 450 × 109/L and is associated with the JAK2 V617F mutation in up to 55% of cases [10] and with an MPL (thrombopoietin receptor) mutation in up to 5% of cases. [11]
These mutations are not specific to myelofibrosis, but are observed in other myeloproliferative neoplasms, specifically polycythemia vera and essential thrombocythemia. [3] The JAK2 protein is mutated giving risk to a variant protein with an amino acid substitution commonly referred to as V617F; the mutation causing this variant is found in ...
The SARS disease caused thrombocytosis. [10] Once the reactive causes of thrombocythemia are ruled out, clonal thrombocythemia should be considered. The most common cause of clonal thrombocythemia is a myeloproliferative neoplasm. These include: essential thrombocythemia, chronic myelogenous leukemia, polycythemia vera, and primary ...
A mutation in the JAK2 kinase (V617F) is strongly associated with polycythemia vera. [18] [19] While it is a JAK2 V617F mutation in 95% of patients, JAK2 exon 12 mutations have also been observed. [20] The V617F mutation is not inherited, but develops as a somatic mutation in the erythroid progenitor cells. [21]
Quotes about strength and love “The value of love will always be stronger than the value of hate.” —Franklin D. Roosevelt “It is good to love many things, for therein lies the true ...
Janus kinase (JAK) is a family of intracellular, non-receptor tyrosine kinases that transduce cytokine-mediated signals via the JAK-STAT pathway.They were initially named "just another kinase" 1 and 2 (since they were just two of many discoveries in a PCR-based screen of kinases), [1] but were ultimately published as "Janus kinase".
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