This three-step pathway involves the enzymes carboxylesterase, cytidine deaminase and thymidine phosphorylase (Figure 1), all of which are expressed in hepatic and tumor tissue. In particular the ...

Azacitidine and decitabine are HMAs. Following oral administration, HMAs are rapidly degraded by cytidine deaminase, resulting in poor oral bioavailability. Cedazuridine is a cytidine deaminase ...