Mouse and cynomolgus monkey (cedazuridine); rat (decitabine)
“In the general toxicology studies, cedazuridine (mice and cynomolgus monkeys) and decitabine (rats) were administered orally once daily for 5 to 7 days in 28-day cycles, similar to the clinical regimen.”
✓ VerifiedFDA multi-discipline review, p. 37Source ↗
Why that species
Mouse and monkey CDA distribution and activity similar to human; CDA absent in rat
“A literature assessment submitted by the Applicant concluded that humans, mice, and cynomolgus monkeys have similar CDA tissue distribution and activity profiles, and CDA activity was notably absent in rats.”
✓ VerifiedFDA multi-discipline review, p. 37Source ↗
Surrogate molecule
No surrogate; the clinical compounds were tested
“Pivotal studies of oral decitabine monotherapy were limited to a 13-week/4-cycle study conducted in rats only (up to 7.5 mg/kg/dose).”
✓ VerifiedFDA multi-discipline review, p. 38Source ↗