[Pathogenesis of thrombosis in JAK2V617F myeloproliferative neoplasms].

BCR-ABL negative myeloproliferative neoplasms are acquired hematologic diseases characterized by blood cell proliferation and that include polycythemia vera (PV), essential thrombocytemia (ET) and primary myelofibrosis (PMF). Occurring of venous and arterial thrombosis is the main complication of these diseases. Risk factors for thrombosis are individuals older than 60 and history of thrombosis. The mechanisms leading to thrombosis are complex and involve several blood compartments, plasmatic factors and endothelial cells. Over the last years, new actors of thrombosis have been discovered.