Clinical and histopathological features of myeloid neoplasms with concurrent Janus kinase 2 (JAK2) V617F and KIT proto-oncogene, receptor tyrosine kinase (KIT) D816V mutations
We report on 45 patients with myeloid neoplasms and concurrent Janus kinase 2 (JAK2) V617F and KIT proto-oncogene, receptor tyrosine kinase (KIT) D816V (JAK2pos./KITpos.) mutations, which are individually identified in >60% of patients with classical myeloproliferative neoplasms (MPN) and >90%...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
1 June 2021
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| In: |
British journal of haematology
Year: 2021, Jahrgang: 194, Heft: 2, Pages: 344-354 |
| ISSN: | 1365-2141 |
| DOI: | 10.1111/bjh.17567 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1111/bjh.17567 Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1111/bjh.17567 
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| Verfasserangaben: | Nicole Naumann, Johannes Lübke, William Shomali, Lukas Reiter, Hans-Peter Horny, Mohamad Jawhar, Vito Dangelo, Alice Fabarius, Georgia Metzgeroth, Sebastian Kreil, Karl Sotlar, Claire Oni, Claire Harrison, Wolf-Karsten Hofmann, Nicholas C. P. Cross, Peter Valent, Deepti Radia, Jason Gotlib, Andreas Reiter and Juliana Schwaab |
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| 245 | 1 | 0 | |a Clinical and histopathological features of myeloid neoplasms with concurrent Janus kinase 2 (JAK2) V617F and KIT proto-oncogene, receptor tyrosine kinase (KIT) D816V mutations |c Nicole Naumann, Johannes Lübke, William Shomali, Lukas Reiter, Hans-Peter Horny, Mohamad Jawhar, Vito Dangelo, Alice Fabarius, Georgia Metzgeroth, Sebastian Kreil, Karl Sotlar, Claire Oni, Claire Harrison, Wolf-Karsten Hofmann, Nicholas C. P. Cross, Peter Valent, Deepti Radia, Jason Gotlib, Andreas Reiter and Juliana Schwaab |
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| 520 | |a We report on 45 patients with myeloid neoplasms and concurrent Janus kinase 2 (JAK2) V617F and KIT proto-oncogene, receptor tyrosine kinase (KIT) D816V (JAK2pos./KITpos.) mutations, which are individually identified in >60% of patients with classical myeloproliferative neoplasms (MPN) and >90% of patients with systemic mastocytosis (SM) respectively. In SM, the concurrent presence of a clonal non-mast cell neoplasm [SM with associated haematological neoplasm (SM-AHN)] usually constitutes a distinct subtype associated with poor survival. All 45 patients presented with a heterogeneous combination of clinical/morphological features typical of the individual disorders (e.g. leuco-/erythro-/thrombocytosis and elevated lactate dehydrogenase for MPN; elevated serum tryptase and alkaline phosphatase for SM). Overlapping features identified in 70% of patients included splenomegaly, cytopenia(s), bone marrow fibrosis and additional somatic mutations. Molecular dissection revealed discordant development of variant allele frequency for both mutations and absence of concurrently positive single-cell derived colonies, indicating disease evolution in two independent clones rather than monoclonal disease in >60% of patients examined. Overall survival of JAK2pos./KITpos. patients without additional somatic high-risk mutations [HRM, e.g. in serine and arginine-rich splicing factor 2 (SRSF2), additional sex combs like-1 (ASXL1) or Runt-related transcription factor 1 (RUNX1)] at 5 years was 77%, indicating that the mutual impact of JAK2 V617F and KIT D816V on prognosis is fundamentally different from the adverse impact of additional HRM in the individual disorders. | ||
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| 650 | 4 | |a multi-mutated myeloid neoplasm | |
| 650 | 4 | |a myeloproliferative neoplasm | |
| 650 | 4 | |a systemic mastocytosis | |
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