|
rs10974944
|
|
|
0.010 |
GeneticVariation |
BEFREE |
We genotyped 149 myeloproliferative neoplasms patients (69 had polycythemia vera, 65 had essential thrombocythemia, and 15 had primary myelofibrosis) with a known JAK2 V617F mutational status and 150 controls for the JAK2 rs10974944 (C/G) single nucleotide polymorphism, in which the G allele tags the 46/1 haplotype.
|
20422415 |
2010 |
|
rs10815148
|
|
|
0.010 |
GeneticVariation |
BEFREE |
Genotype-phenotype analysis showed 3 JAK2 SNPs (rs7046736, rs10815148, and rs12342421) to be significantly but reciprocally associated with PV (P < .001 for all; odds ratio = 0.16, 2.72, and 2.46, respectively) and ET (P < .001 for all; odds ratio = 3.05, 0.29, and 0.30, respectively) but not with PMF.
|
18006699 |
2008 |
|
rs10974947
|
|
|
0.010 |
GeneticVariation |
BEFREE |
Three additional JAK2 SNPs (rs10758669, rs3808850, and rs10974947) and a single EPOR SNP (rs318699) were also significantly associated with PV but not with ET or PMF.
|
18006699 |
2008 |
|
rs12342421
|
|
|
0.010 |
GeneticVariation |
BEFREE |
Genotype-phenotype analysis showed 3 JAK2 SNPs (rs7046736, rs10815148, and rs12342421) to be significantly but reciprocally associated with PV (P < .001 for all; odds ratio = 0.16, 2.72, and 2.46, respectively) and ET (P < .001 for all; odds ratio = 3.05, 0.29, and 0.30, respectively) but not with PMF.
|
18006699 |
2008 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
Approximately 6% and 14% of JAK2 V617F-negative essential thrombocythemia (ET) and primary myelofibrosis (PMF) patients, respectively, have 'canonical' MPL exon 10 driver mutations W515L/K/R/A or S505N, which generate constitutively active receptors and consequent loss of Tpo dependence.
|
31697803 |
2020 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
The advances in molecular insights, especially the discovery of the Janus kinase 2 (JAK2) V617F mutation and its role in JAK-STAT pathway dysregulation, led to the development of the JAK inhibitor ruxolitinib, which currently represents the cornerstone of medical therapy in MF and hydroxyurea-resistant/intolerant PV.
|
31228096 |
2019 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
With the advent of targeted therapies, such as the Janus kinase inhibitors, many patients have experienced substantial clinical benefits, including reduction in splenomegaly and symptoms and, in some instances, improvement or stabilization of bone marrow fibrosis and reduction of JAK2 V617F allele burden.
|
30343328 |
2019 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
The median age was 57years (range, 38 to 72); 75% had primary MF and 25% had secondary MF.JAK2 V617F was mutated in 61%.
|
30408564 |
2019 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
We conclude that besides morphology of megakaryocytes and other features, JAK2 V617F allelic burden can help differentiate CMML from PMF with monocytosis.
|
30447300 |
2019 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
Notably, mutations in chromatin regulators ASXL1 and/or EZH2 were identified as the first genetic lesions, preceding both JAK2-V617F and CALR mutations, and are thus drivers of clonal myelopoiesis in a PMF subset.
|
29907810 |
2019 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
When comparing patients with and without venous thrombosis, cutoff value of V617F burden allele > 90.4% was significant for PV patients with thrombosis (P = .036), as was > 56.7% for PMF patients with thrombosis (P = .046).
|
30301673 |
2019 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
An integral part of laboratory tests carried out in this disease group is detecting the presence of mutations in the Janus kinase 2 gene at position 617 (JAK2 V617F) and in the gene encoding for the receptor for thrombopoietin (myeloproliferative leukemia virus oncogene, MPL) found in approximately 60% of PMF patients.
|
29534592 |
2019 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
The Janus kinase 2 (<i>JAK2</i>) V617F mutation is common in patients with breakpoint cluster region-Abelson1 (<i>BCR-ABL1</i>)-negative myeloproliferative neoplasms, including polycythemia vera, essential thrombocythemia and primary myelofibrosis, but is rarely detected in <i>BCR-ABL1-</i>positive chronic myeloid leukemia (CML) patients.
|
31123683 |
2019 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
A JAK2 variant in addition to JAK2 V617F (n = 13) in myelofibrosis was associated with an increased cumulative risk of transformation into AML (P = .003).
|
30811597 |
2019 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
A thorough investigation resulted in a final diagnosis of primary myelofibrosis associated with the V617F mutation in the JAK2 gene.
|
29368941 |
2018 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
Therefore, the patient was determined to have ECD with a typical BRAF V600E mutation, as well as primary myelofibrosis, with the latter diagnosis manifesting clinically over one year after the JAK2 V617F was first detected in ctDNA.
|
29565699 |
2018 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
Overall response rates (ORRs) in patients with JAK2 V617F-mutated PV, ET, and MF were 95%, 90.5%, and 9.1%, respectively, while patients with ET and MF without the JAK2 V617F mutations had ORRs of 43.7% and 0%, respectively.
|
30025280 |
2018 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
A point mutation in exon 14 of the JAK2 gene resulting in the formation of the JAK2 V617F transcript occurs in 95% of PV patients and around 50% of ET and PMF patients driving constitutive activation of the JAK/STAT pathway.
|
30558676 |
2018 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
The prevalence of JAK2 V617F mutations is higher than 95% in PV, 50%-75% in ET and 40%-75% in PMF.
|
30502850 |
2018 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
The discovery of the JAK2 V617F mutation in the majority of MF patients has been followed by significant progress in drug development for MF.
|
28395559 |
2017 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
The identification of CALR mutations in essential thrombocythemia (ET) and primary myelofibrosis that are mutually exclusive with the JAK2 V617F mutation has stirred an intensive research interest about the molecular functions of CALR and its mutants in myeloproliferative neoplasms (MPNs) and its diagnostic/prognostic value.
|
28589084 |
2017 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
Collectively, our studies demonstrate that occasional patients with CALR mutation-positive ET or MF carry other MPN-initiating genetic mutations (including JAK2 V617F), acquire "secondary mutations" before or after the CALR mutation, or evolve over time to being CALR mutation-homozygous.
|
28168700 |
2017 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
Furthermore, EndMT is an early event in a JAK2-V617F knock-in mouse model of primary myelofibrosis.
|
28728747 |
2017 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
Since the discovery of the activating V617F mutation in Janus kinase 2 (JAK2), a number of pharmacologic inhibitors of JAK2 have entered clinical trials for patients with myelofibrosis.
|
28441920 |
2017 |
|
rs77375493
|
|
|
0.800 |
GeneticVariation |
BEFREE |
JAK2 is mutated (V617F) in more than 90 % of patients with polycythemia vera (PV) and approximately 60 % of patients with essential thrombocythemia (ET) or primary myelofibrosis (PMF).
|
27468853 |
2016 |