VaxGen and Kaketsuken Finalize Commercial Terms For Smallpox Vaccine Development


BRISBANE, Calif. and KUMAMOTO, Japan -- VaxGen, Inc. and the Chemo-Sero-Therapeutic Research Institute (Kaketsuken) announced today that they have finalized the commercial terms of their collaboration to develop a safer smallpox vaccine for use in the United States and potentially elsewhere. The immediate goal of the collaboration is to be able to respond, beginning next year, to potential U.S. government contracts for the purchase of attenuated smallpox vaccine.

According to estimates by the Congressional Budget Office, the U.S. government expects to spend approximately $1.9 billion for the purchase of such a vaccine during the next 10 years.

Under the terms of the agreement, VaxGen will purchase vaccine in bulk from Kaketsuken and complete all secondary manufacture, including filling and packaging, necessary to sell finished product in the U.S. Each party is responsible for their respective development expenses prior to sales of the vaccine. There are no milestone or up-front payments required of VaxGen. The agreement covers sales to markets in the U.S., but it contains provisions to expand the scope to other international markets, if appropriate. Additional terms of the agreement are not being disclosed.

"Concluding this agreement is a major step in our developing relationship with Kaketsuken and paves the way for further progress in what already has been a very productive working partnership," said Lance K. Gordon, PhD, VaxGen's chief executive officer.

Under a development agreement announced last year, Kaketsuken has already manufactured 1 million bulk doses of the vaccine for VaxGen's proposed clinical trials and has provided initial doses for animal studies. VaxGen, in turn, has worked with Kaketsuken to ensure that its manufacturing facility in Kumamo will meet current Good Manufacturing Practices according to U.S. Food and Drug Administration standards.

VaxGen is testing the vaccine in one animal study at a U.S. university and is consulting with the FDA and other experts to design and carry out further animal studies to demonstrate the vaccine's efficacy. VaxGen also intends to launch human clinical studies next year, subject to FDA consent.

The vaccine, LC16m8, is the only attenuated smallpox vaccine to have been licensed for use in humans. Licensed in Japan in 1980, the vaccine was designed to have a better safety profile, yet be equally effective, compared to conventional smallpox vaccines. LC16m8 has been administered to over 50,000 Japanese children. The vaccine gives a pock, or "take," at the site of injection at a rate similar to conventional live smallpox vaccines currently stockpiled in the U.S. This "take" has long been accepted by public health authorities as evidence of successful immunization against smallpox. The vaccine is based on the LC16m8 clone of the internationally accepted Lister strain of vaccinia virus. The Department of Homeland Security Appropriations Act enacted October 1, 2003 includes an appropriation of $5.6 billion for the purchase of biodefense vaccines and related products over the coming 10 years. Of the total, the Congressional Budget Office estimates that $1.9 billion will be used for the purchase of an attenuated smallpox vaccine.

Source: VaxGen, Inc.

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