Version July 2025
| Higher VTE-risk inherited thrombophilias |
| Antithrombin (AT) deficiency |
| Factor V Leiden (FVL) variant homozygote |
| Prothrombin G20210A variant homozygote* |
| Concurrent heterozygosity for both FVL and prothrombin G20210A variants |
| Rare combined thrombophilias (eg, AT deficiency and FVL) |
| Lower VTE-risk inherited thrombophilias |
| FVL variant heterozygote |
| Prothrombin G20210A variant heterozygote |
| Protein C deficiency |
| Protein S deficiency |
VTE: venous thromboembolism.
* Also called the prothrombin gene mutation (PGM).