Inhalational anthrax (aerosol B. anthracis spores) in NZW rabbits and cynomolgus macaques
“The efficacy of ANTHIM for treatment and prophylaxis of inhalational anthrax was studied in multiple studies in the cynomolgus macaque and NZW rabbit models of inhalational anthrax.”
Human efficacy trials not feasible or ethical; efficacy based on animal infection models (Animal Rule)
“Because it is not feasible or ethical to conduct controlled clinical trials in humans with inhalational anthrax, the efficacy of ANTHIM for the treatment of inhalational anthrax is based on efficacy studies in NZW rabbits and cynomolgus macaques.”
Most studies showed significantly improved survival over controls, but survival not always dose-dependent and control survival confounded some studies
“Survival varied and was not always dose-dependent. Survival in control animals in some studies confounded results, but most studies showed significant increase in survival in treated animals over controls.”
✓ VerifiedFDA pharmacology/toxicology review, p. 99Source ↗