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The Association Between JAK2V617F Mutation and Bone Marrow Fibrosis at Diagnosis in Patients with Philadelphia-Negative Chronic Myeloproliferative Neoplasms
(Galenos Yayincilik, 2012) Ar, M. Cem; Buyuktas, Deram; Eskazan, A. Emre; Aydin, Seniz Ongoren; Tanrikulu, Eda; Baslar, Zafer; Buyru, A. Nur
Objective: Bone marrow fibrosis is the second most common complication that causes morbidity and mortality in patients with Philadelphia-negative myeloproliferative neoplasms (MPNs). The aim of this study was to investigate the association between JAK2V617F mutation and bone marrow fibrosis at diagnosis in patients with MPNs. Material and Methods: In total, 149 patients with MPNs were retrospectively evaluated to determine if there was an association between the histological grade of bone marrow fibrosis and JAK2V617F mutation. Results: In all, 67.7% of the patients carried the mutated JAK2 gene. The presence of JAK2V617F mutation was not associated with the occurrence of bone marrow fibrosis (P = 0.55) or its grade at diagnosis (P = 0.65). Conclusion: Molecular mechanisms or genetic defects other than JAK2V617F may underlie the occurrence of bone marrow fibrosis in patients with MPNs.