title: Circulating P-selectin and the risk of recurrent venous thromboembolism.
abstract: The clinical relevance of high P-selectin levels in venous thrombosis is unknown. We prospectively followed 544 patients with first unprovoked venous thromboembolism (VTE) after cessation of anticoagulation and evaluated P-selectin as a risk factor of recurrent VTE. VTE recurred in 63 (12%) patients. Patients with recurrence had significantly higher P-selectin levels than those without (45.8 mg/dl +/- 16.4 vs. 40.1 mg/dl +/- 13.3; p = 0.006). After four years, the probability of recurrence was 20.6% (95% confidence interval [CI] 12.6-28.5) among patients with P-selectin values above the 75(th) percentile of the patient population and was 10.8% (95% CI 7.2-14.3) among patients with lower values (p = 0.046). Compared to patients with low P-selectin, adjusted risk of recurrence was 1.7-fold (95% CI 1.0-2.9, p = 0.045) increased among patients with P-selectin levels exceeding the 75(th) percentile. We conclude that high circulating P-selectin is a risk factor of recurrent VTE.
authors.affiliation: Department of Medicine I, Medical University of Vienna, Vienna, Austria. paul.kyrle@meduniwien.ac.at
authors.forename: Paul A
authors.initials: PA
authors.lastname: Kyrle
authors.forename: Gregor
authors.initials: G
authors.lastname: Hron
authors.forename: Sabine
authors.initials: S
authors.lastname: Eichinger
authors.forename: Oswald
authors.initials: O
authors.lastname: Wagner
mesh_terms: D000328:Adult; D001317:Austria / Q000453:epidemiology; D015415:Biomarkers / Q000097:blood; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D019007:P-Selectin / Q000097:blood*; D016016:Proportional Hazards Models; D011446:Prospective Studies; D012008:Recurrence; D018570:Risk Assessment; D012307:Risk Factors; D013923:Thromboembolism / Q000097:blood* / Q000453:epidemiology / Q000209:etiology; D013997:Time Factors; D015854:Up-Regulation; D020246:Venous Thrombosis / Q000097:blood* / Q000453:epidemiology / Q000209:etiology
chemical_list: D015415:Biomarkers; D019007:P-Selectin