Moreover, elevated levels of proteins involved in blood coagulation and hemostasis, such as antithrombin-3, alpha-2-antiplasmin, vitamin K-dependent protein S, fibrinogen alpha chain, plasminogen, alpha-2-macroglobulin, and coagulation factor ×2, were associated with different grades of meningiomas [65]. The gene discussed is PROS1; the disease is meningioma.