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. 2011 Feb 13;31(4):478–492. doi: 10.1007/s11239-011-0551-3

Table 1.

In vitro Ki values for inhibition of human enzymes by apixaban at 25°C [13]

Enzyme Ki (nM)
Factor Xa 0.08 ± 0.03
Activated protein C >30,000
Chymotrypsin 3,500
Factor IXa >15,000
Factor VIIa >15,000
Plasma kallikrein 3,700
Plasmin >25,000
Thrombin 3,100
Tissue plasminogen activator >40,000
Trypsin >20,000