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FDA clears IND for anthrax vaccine candidate.

Vaccine Weekly

| July 02, 2003 | COPYRIGHT 2003 NewsRX. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

2003 JUL 2 - (NewsRx.com & NewsRx.net) -- VaxGen, Inc., (VXGN) announced that the U.S. Food and Drug Administration (FDA) has cleared the Investigational New Drug (IND) application for its candidate anthrax vaccine.

The effective IND allows VaxGen to begin clinical development of the investigational vaccine with the goal of producing an emergency stockpile for the U.S. government and licensing the product for commercial sales.

The next step in this process will be the initiation of a phase I human clinical trial involving approximately 100 volunteers at four leading medical centers: Baylor College of Medicine in Houston, Emory University School of Medicine in Atlanta, Johns Hopkins University in Baltimore and Saint Louis University Health Sciences Center.

The trial will evaluate the safety and immunogenicity of VaxGen's candidate vaccine compared to those of the existing licensed anthrax vaccine. The vaccine candidate's efficacy will be established by comparing the immune responses in humans to those shown to protect animals from inhalation of anthrax spores.

The phase I trial is being funded through VaxGen's contract, N01-AI-25494, with the National Institute of Allergy and Infectious Disease (NIAID), a component of the National Institutes of Health. The purpose of the project is to develop an anthrax vaccine that is safe in humans, efficacious in animal inhalation challenge studies and requires no more than three injections, compared to the six injections required with the existing licensed anthrax vaccine.

The contract calls for the vaccine to be made from recombinant Protective Antigen (rPA), a protein known to induce antibodies that neutralize anthrax toxins. Achieving full licensure will depend on the results of current and planned studies designed to satisfy the standard requirements for FDA vaccine licensure, with the exception that the demonstration of efficacy will be in animals according to the FDA's "Animal Rule," published in the Federal Register on May 31, 2002.

"The ability to begin phase I clinical trials advances our ultimate goal of supplying the next-generation anthrax vaccine to the U.S. and foreign governments, as ...

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