To cite this article: Freynhofer MK, Draxler DF, Gruber SC, Bruno V, H€ ochtl T, Fellner B, Jakl-Kotauschek G, Wojta J, Pabinger-Fasching I, Huber K, Ay C. Endogenous t-PA-antigen is an independent predictor of adverse cardiovascular events and all-cause death in patients with atrial fibrillation. J Thromb Haemost 2013; 11: 1069-77.Summary. Background: Atrial fibrillation (AF) is associated with raised levels of P-selectin and an apparent prothrombotic state. However, levels of tissue plasminogen activator (t-PA)-antigen are increased also. We investigated whether high levels of endogenous t-PA-antigen or soluble P-Selectin (sP-Selectin), independently of CHADS 2 -or CHA 2 DS 2 VASc-scores, predict major adverse cardiovascular events (MACE) in patients with AF when treated according to current guidelines. Methods: This prospective, longitudinal single-center study included 269 patients with AF. Blood samples were analyzed for sP-Selectin and t-PA-antigen concentration by means of commercially available enzyme-linked immunoassays. Results: Patients were followed for a median duration of 1933 (1517-2277)