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Background: Allogeneic hematopoietic stem-cell transplantation is the only curative treatment for myelofibrosis. Driver mutations are the pathophysiological hallmark of the disease, but the role of mutation clearance after transplantation is unclear.

Methods: We used highly sensitive polymerase-chain-reaction technology to analyze the dynamics of driver mutations in peripheral-blood samples from 324 patients with myelofibrosis (73% with mutations, 23% with mutations, and 4% with mutations) who were undergoing transplantation after reduced-intensity conditioning.

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Primary myelofibrosis (PMF) is an uncommon chronic myeloproliferative disorder that is commonly associated with Janus kinase 2 (JAK-2), calreticulin (CALR), or thrombopoietin receptor (MPL) mutations. Pre-fibrotic PMF (also known as pre-PMF or early PMF) is a subtype of PMF that is defined by a lower grade of fibrosis. In this report, we present a rare case of warm autoimmune hemolytic anemia (wAIHA) associated with pre-PMF.

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BCR::ABL1-negative myelo-proliferative neoplasms (MPNs) are characterized by mutations in JAK2, CALR, or MPL. Usually these mutations are co-exclusive of each other and of BCR::ABL1. We reviewed clonal interactions in 177 subjects with mutations in JAK2, CALR, or MPL and BCR::ABL1 including JAK2/BCR::ABL1 (N = 142), CALR/BCR::ABL1 (N = 31), MPL/BCR::ABL1 (N = 3).

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Molecular and Clinical Risk Factors Associated with Thrombosis and Bleeding in Myelofibrosis Patients.

Hamostaseologie

December 2024

Klinik für Innere Medizin II, Abteilung Hämatologie und Internistische Onkologie, Universitätsklinikum Jena, Jena, Germany.

Background:  The risk of thrombosis and bleeding in myelofibrosis (MF) has been historically underappreciated. We sought to investigate potential molecular and clinical risk factors for venous (VTE) and arterial (ATE) thrombotic events as well as bleeding episodes.

Methods:  Data from 246 consecutive MF patients were analyzed.

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Myeloproliferative neoplasms (MPNs) are clonal hematopoietic cancers characterized by hyperproliferation of the myeloid lineages. These clonal marrow disorders are extremely rare in pediatric patients. MPN is reported to occur 100 times more frequently in adults, and thus research is primarily focused on this patient group.

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