How does JAK2V617F contribute to pathogenesis of myeloproliferative neoplasms? (Review)

Chen, E. and Mullally, A. 2014. How does JAK2V617F contribute to pathogenesis of myeloproliferative neoplasms? (Review). Hematology American Society of Hematology Education Program. 2014, pp. 268-276. https://doi.org/10.1182/asheducation-2014.1.268

TitleHow does JAK2V617F contribute to pathogenesis of myeloproliferative neoplasms? (Review)
TypeJournal article
AuthorsChen, E. and Mullally, A.
Abstract

A decade on from the discovery of the JAK2V617F mutation in the majority of patients with myeloproliferative neoplasms (MPNs), JAK2V617F is now firmly installed in the hematology curriculum of medical students and the diagnostic-testing algorithm of clinicians. Furthermore, the oral JAK1/JAK2 inhibitor ruxolitinib, rationally designed to target activated JAK2 signaling in MPN, has been approved by the Food and Drug Administration (FDA) of the United States for the past 3 years for the treatment of intermediate- and advanced-phase myelofibrosis. Notwithstanding this, JAK2V617F continues to stimulate the MPN research community and novel insights into understanding the mechanisms by which JAK2V617F contributes to the pathogenesis of MPN are continually emerging. In this chapter, we focus on recent advances in 4 main areas: (1) the molecular processes coopted by JAK2V617F to induce MPN, (2) the role that JAK2V617F plays in phenotypic diversity in MPN, (3) the functional impact of JAK2V617F on hematopoietic stem cells, and (4) therapeutic strategies to target JAK2V617F. Although great strides have been made, significant deficits still exist in our understanding of the precise mechanisms by which JAK2V617F-mutant hematopoietic stem cells emerge and persist to engender clonal hematopoiesis in MPN and in developing strategies to preferentially target the JAK2V617F-mutant clone therapeutically. Critically, although myelofibrosis remains arguably the greatest clinical challenge in JAK2V617F-mediated MPN, the current understanding of myelofibrosis-specific disease biology remains quite rudimentary. Therefore, many important biological questions pertaining to JAK2V617F will continue to engage and challenge the MPN research community in the coming decade

JournalHematology American Society of Hematology Education Program
Journal citation2014, pp. 268-276
Year2014
PublisherAmerican Society of Hematology
Digital Object Identifier (DOI)https://doi.org/10.1182/asheducation-2014.1.268
Publication dates
Published05 Dec 2014

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