PROS1 and Rare hereditary thrombophilia: A study on 1,384 women enrolled in the European Prospective Cohort on Thrombophilia reported that the risk of miscarriages and stillbirths was 35% higher in patients with inherited thrombophilia, including antithrombin, protein C, protein S deficiency, and FVL mutation, but such association was not seen specifically with FVL mutation [46].