A patient with a history of recurrent venous thrombosis is found to have a mutation in the gene encoding which protein?

A Protein S
B Protein C
C Antithrombin III
D Factor V Leiden ✓

Explanation

Factor V Leiden is a mutation in the gene encoding factor V, which increases the risk of recurrent venous thrombosis.

Source

New England Journal of Medicine
Hematology Hematology: Coagulation Disorders Hematology: Coagulation Disorders Hard MEDICAL Confidence: high