FDA OKs Emergent’s Anthrax Vaccine
FDA has approved an Emergent BioSolutions BLA for Cyfendus (anthrax vaccine adsorbed, adjuvanted) for post-exposure prophylaxis of disease following suspected or confirmed exposure to Bacillus anthracis in people aged 18 through 65 years. Approval was based on data in animal models of inhalational anthrax, the company says, adding that the vaccine is a component of the U.S. government’s anthrax preparedness efforts. Emergent says additional data relied upon came from:
- a pivotal Phase 3 clinical study that evaluated the lot consistency, immunogenicity, and safety of the vaccine following a two-dose schedule administered intramuscularly in healthy adults,
- a Phase 2 study that evaluated non-interference between the vaccine and antibacterial drugs approved for post-exposure prophylaxis of anthrax disease, and
- non-clinical studies that assessed protective efficacy of the vaccine against lethal challenge with anthrax spores and helped identify neutralizing antibody levels associated with protection against disease.