Abstract:
:In an international collaborative study, a central histologic review identified 891 patients with essential thrombocythemia, strictly defined by World Health Organization criteria. After a median follow-up of 6.2 years, 109 (12%) patients experienced arterial (n = 79) or venous (n = 37) thrombosis. In multivariable analysis, predictors of arterial thrombosis included age more than 60 years (P = .03; hazard ratio [HR] = 1.7), thrombosis history (P = .003; HR = 2.1), cardiovascular risk factors including tobacco use, hypertension, or diabetes mellitus (P = .007; HR = 1.9), leukocytosis (> 11 × 10(9)/L; P = .04; HR = 1.7), and presence of JAK2V617F (P = .009; HR = 2.6). In contrast, only male gender predicted venous thrombosis. Platelet count more than 1000 × 10(9)/L was associated with a lower risk of arterial thrombosis (P = .007; HR = 0.4). These associations, except the one with leukocytosis, remained significant (or near significant) when analysis was restricted to JAK2V617F-positive cases. The current study clarifies the contribution of specific disease and host characteristics to the risk of arterial versus venous thrombosis in essential thrombocythemia.
journal_name
Bloodjournal_title
Bloodauthors
Carobbio A,Thiele J,Passamonti F,Rumi E,Ruggeri M,Rodeghiero F,Randi ML,Bertozzi I,Vannucchi AM,Antonioli E,Gisslinger H,Buxhofer-Ausch V,Finazzi G,Gangat N,Tefferi A,Barbui Tdoi
10.1182/blood-2011-02-339002subject
Has Abstractpub_date
2011-06-02 00:00:00pages
5857-9issue
22eissn
0006-4971issn
1528-0020pii
blood-2011-02-339002journal_volume
117pub_type
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