Human Genome Sciences Announces New Order for Raxibacumab (ABthrax(TM)) from U.S. ...(trategic National Stockpile for emergenc...)

"We are proud of our progress, but it is important to acknowledge that raxibacumab would never have been developed without Project BioShield," said James H. Davis, Ph.D., J.D., Executive Vice President and General Counsel, HGS, and leader of the Company's raxibacumab program with the U.S. Government. "It is widely known that anthrax spores can be aerosolized and turned into a bioterrorist weapon with the potential to cause significant loss of life. With raxibacumab, the United States now has a treatment for inhalation anthrax. It has taken HGS nearly seven years of work, much of it in close partnership with BARDA, to reach the point where we have successfully delivered raxibacumab to the Stockpile and secured this second purchase order. We are delighted to have reached this important milestone, and we look forward to continuing to work closely with BARDA in the interest of our nation's security."

Raxibacumab represents a new way to address the anthrax threat. While antibiotics can kill the anthrax bacteria, they are not effective against the deadly toxins that the bacteria produce. Raxibacumab targets anthrax toxins after they are released by the bacteria into the blood and tissues. In an inhalation anthrax attack, people may not know they are infected with anthrax until the toxins already are circulating in their blood, and it may be too late for antibiotics alone to be effective.

About the Raxibacumab Contract with the U.S. Government

Raxibacumab is being developed under a contract entered into with BARDA in 2006 (Contract Number HHS010020050006C). The order announced today is the second order received under the BARDA contract. HGS recognized $153.8 million in revenue in the first quarter of 2009 from the first delivery of raxibacumab to the Strategic National Stockpile, and wil
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