Before revision:  The mechanisms underlying the CAP selectivity towards cancer cells are yet not fully understood , but it has been proposed that two apoptosis-inducing signaling pathways in the extracellular compartment are reactivated when catalase in the cell membrane of cancer cells is inactivated. Since CAP has the capacity to inactivate catalase, CAP may thus be used to induce cancer cell death by reactivation of these signaling pathways.
After revision:  The mechanisms underlying the CAP is due to its ability to inactivate catalase, CAP may thus be used to induce cancer cell death by reactivation of these signaling pathways.