Andexanet alfa is a recombinant form of human FXa protein that has been modified to lack FXa enzymatic activity. Andexanet alfa is a specific reversal agent for FXa inhibitors. The predominant mechanism of action is the binding and sequestration of the FXa inhibitor. In addition, andexanet alfa has been observed to bind to, and inhibit tissue factor pathway inhibitor (TFPI). Inhibition of TFPI activity can increase tissue factor-initiated thrombin generation inducing a pro-coagulant effect.
This medicinal substance has been classified in the anatomical therapeutic chemical (ATC) classification according to its main therapeutic use as follows:
|V Various → V03 All other therapeutic products → V03A All other therapeutic products → V03AB Antidotes
Competent medicine agencies globally have authorized commercialization of this active ingredient according to these medication package inserts (MPIs):
|ANDEXXA Powder for solution for injection
|FDA, National Drug Code (US)
|MPI, US: SPL/PLR
|ONDEXXYA Powder for solution for infusion
|European Medicines Agency (EU)
|MPI, EU: SmPC
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