FDA Approves Elusys NDA for Anthrax Exposure

FDA has approved an Elusys Therapeutics NDA for Anthim (obiltoxaximab) injection to treat inhalational anthrax in combination with antibacterial drugs. It is also approved to prevent inhalational anthrax when alternative therapies are not available or not appropriate. The monoclonal antibody is designed to neutralize toxins produced by B. anthracis. The drug was approved under the FDA’s Animal Rule, which allows efficacy findings from adequate and well-controlled animal studies to support FDA approval when it is not ethical to conduct efficacy trials in humans.

Anthim carries a Boxed Warning alerting patients and health care providers that the drug can cause allergic reactions, including anaphylaxis. It should be administered in settings where patients can be monitored and treated for anaphylaxis, an agency release says.

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