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Chronic myeloproliferative disorders: a tyrosine kinase tale

Leukemia volume 20, pages 200–205 (2006)Cite this article

Abstract

Chronic myeloproliferative diseases (CMPDs) are characterized by the abnormal proliferation and survival of one or more myeloid cell types. The archetype of this class of hematological diseases is chronic myeloid leukemia (CML), characterized by the presence of the Philadelphia (Ph) chromosome, the result of t(9;22)(q34;q11), and the associated BCR-ABL1 oncogene. Some of the Ph-negative myeloproliferative diseases are characterized by other chromosomal translocations involving a variety of tyrosine kinase genes, including ABL1, ABL2, PDGFRA, PDGFRB, FGFR1, and JAK2. The majority of Ph-negative CMPDs, however, such as chronic eosinophilic leukemia, polycythemia vera, essential thrombocythemia, and idiopathic myelofibrosis are not characterized by the presence of recurrent chromosomal abnormalities. Recent studies have identified the FIP1L1-PDGFRA fusion gene, generated due to a small cryptic deletion on chromosome 4q12, and the activating V617F mutation in JAK2 in a significant fraction of Ph-negative CMPDs. These results show that abnormalities in tyrosine kinase genes are central to the molecular pathogenesis of CMPDs. Genome-wide screenings to identify novel tyrosine kinase abnormalities in CMPDs may contribute to further improvement of the diagnosis and the treatment of these diseases.

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Acknowledgements

Grant support: K De Keersmaecker is an Aspirant and Jan Cools is a Postdoctoral Researcher of the ‘FWO-Vlaanderen’. Our work is supported by grants from the FWO-Vlaanderen, the Belgian Federation against Cancer (BFK), and the European Hematology Association (EHA) (José-Carreras Fellowship grant to JC).

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De Keersmaecker, K., Cools, J. Chronic myeloproliferative disorders: a tyrosine kinase tale. Leukemia 20, 200–205 (2006). https://doi.org/10.1038/sj.leu.2404064

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