Summary
Elevated plasma fibronectin levels occur in various clinical states including arterial
disease. Increasing evidence suggests that atherothrombosis and venous thromboembolism
(VTE) share common risk factors. To assess the hypothesis that high plasma fibronectin
levels are associated with VTE, we compared plasma fibronectin levels in the Scripps
Venous Thrombosis Registry for 113VTE cases vs. age and sex matched controls. VTE
cases had significantly higher mean fibronectin concentration compared to controls
(127% vs. 103%, p<0.0001); the difference was greater for idiopathic VTE cases compared
to secondary VTE cases (133% vs. 120%, respectively). Using a cut-off of >90% of the
control values, the odds ratio (OR) for association of VTE for fibronectin plasma
levels above the 90th percentile were 9.37 (95% CI 2.73–32.2; p<0.001) and this OR remained significant
after adjustment for sex, age, body mass index (BMI), factor V Leiden and prothrombin
nt20210A (OR 7.60,95% CI 2.14–27.0; p=0.002). In particular, the OR was statistically
significant for idiopathic VTE before and after these statistical adjustments. For
the total male cohort, the OR was significant before and after statistical adjustments
and was not significant for the total female cohort. In summary, our results suggest
that elevated plasma fibronectin levels are associated with VTE especially in males,
and extend the potential association between biomarkers and risk factors for arterial
atherothrombosis and VTE.
Keywords
Fibronectin - venous thromboembolism - thrombosis