A patient with a history of recurrent venous thromboembolism is found to have a mutation in the gene encoding for thrombomodulin. What is the likely consequence of this mutation?

A Increased expression of tissue factor
B Impaired activation of protein C
C Enhanced fibrinolysis
D Decreased platelet adhesion
Thrombomodulin is a receptor on endothelial cells that binds to thrombin and activates protein C, which in turn inhibits coagulation factors. A mutation in the gene encoding for thrombomodulin would likely impair the activation of protein C, leading to a prothrombotic state.
New England Journal of Medicine
Hematology Hematology: Coagulation Disorders Hematology: Coagulation Disorders Hard MEDICAL Confidence: medium