Research Article: Risk factors for thrombotic events in Philadelphia chromosome-negative myeloproliferative neoplasms: a retrospective analysis of 336 cases
Abstract:
Thrombotic events are one of the main factors affecting the survival of patients with Philadelphia chromosome-negative (Ph-) myeloproliferative neoplasms (MPNs). Therefore, a comprehensive understanding of the early relevant high-risk factors makes sense for early prevention and reducing mortality in these patients. In this study, we conducted a retrospective analysis of 336 patients with Ph- MPN and summarized the clinical characteristics, incidence of thrombotic events and influencing factors. Thrombotic events occurred in 27.7% (93/336) of patients. Among the thrombotic events, arterial thrombosis occurred in 86 cases (92.5%), the most common thrombotic event was cerebral infarction (69/93, 74.2%). Univariate analysis and logistic regression identified that diagnosis of Polycythemia Vera (PV)/Essential Thrombocythemia (ET), thrombotic events before diagnosis and D-dimer?1mg/L were the independent risk factors for thrombotic events at initial diagnosis in MPN patients ( P <0.05). Receiver operating characteristic (ROC) curve analysis revealed that the integrated predictive efficacy of the triple-variable combination was markedly superior to that of any single parameter alone, yielding a sensitivity of 72.04% (95% CI: 61.8%-80.9%), a specificity of 74.49% (95% CI: 68.5%-79.8%), and an area under the curve (AUC) of 0.771 (95% CI: 0.723 - 0.815). Additionally, univariate analysis further identified smoking history, elevated hemoglobin (Hb?136g/L), hematocrit (HCT?0.42), D-dimer-to-fibrinogen ratio (DFR?0.243) and JAK2 V617F mutation as potential risk factors for thrombosis ( P <0.05), necessitating validation in future studies. These findings facilitate the early identification of Ph-MPN patients at heightened risk for thrombotic events, enabling the implementation of targeted prophylactic strategies to mitigate thrombotic risk.
Introduction:
Myeloproliferative neoplasms (MPNs) are malignant disorders of the hematopoietic system, which are characterized by the clonal proliferation of one or more myeloid cell lineages, resulting in a group of myeloid neoplasms. Clinically, MPN are manifested by hyperplasia of one or more types of blood cells, and are often accompanied by hepatomegaly, splenomegaly, or lymphadenopathy. Polycythemia vera (PV), essential thrombocythemia (ET), and primary myelofibrosis (PMF) are collectively referred to as Philadelphia…
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