High factor VIII antigen levels increase the risk of venous thrombosis but are not associated with polymorphisms in the von Willebrand factor and factor VIII gene
Copyright policy )High factor VIII antigen levels increase the risk of venous thrombosis but are not associated with polymorphisms in the von Willebrand factor and factor VIII gene
High factor VIII levels increase the risk of venous thromboembolism, but the mechanisms that cause high factor VIII levels are unclear. In 301 thrombosis patients and 301 matched healthy controls, factor VIII antigen (VIII:Ag) levels ≥ 150 IU/dl increased the thrombosis risk more than fivefold. We investigated whether high factor VIII:Ag levels result from a genetic variation in the factor VIII or von Willebrand factor (VWF) genes. Six polymorphisms in the VWF gene and two CA‐repeats in the factor VIII gene were not associated with plasma VWF levels, factor VIII:Ag levels, or thrombosis risk. Our data do not support the hypothesis that a single functional sequence variation in the factor VIII or VWF gene explains the majority of high factor VIII levels and thrombotic risk.
- Leiden University Medical Center Netherlands
- City Hospital United Kingdom
- Leiden University Netherlands
Risk, Venous Thrombosis, Factor VIII, Logistic Models, Polymorphism, Genetic, Case-Control Studies, von Willebrand Factor, Humans, Regression Analysis, Biomarkers
Risk, Venous Thrombosis, Factor VIII, Logistic Models, Polymorphism, Genetic, Case-Control Studies, von Willebrand Factor, Humans, Regression Analysis, Biomarkers
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