KLK11 and blood coagulation disease: As COVID-19 infection has a strong association with coagulopathy (Asakura and Ogawa, 2020; Iba et al., 2020), we focused on the activity of enzymes involved in the clotting cascade and fibrinolysis regulation and other trypsin-like proteases, which could be characterized by a similar array of target proteins, including but not limited to coagulation enzymes and fibrinogen.