KNG1 and Venous thrombosis: A similar condition was detected for further at-risk genotypes marked as F11 rs2289252 and rs2036914, associated with circulating coagulation FXI levels and with antenatal and pregnancy-related thrombosis [47,53,54] as well as KNG1 rs710446, associated with in vitro coagulation test (aPTT) variability and with venous thrombosis [54].