"This is the first recombinant tuberculosis vaccine to reach human trials in the United States," says NIAID Director Anthony S. Fauci, M.D. "Indeed, this is the first new TB vaccine to be tested in our country in more than 60 years. This candidate vaccine, as well as other novel products emerging from the TB research and development pipeline, offers hope for reducing the burden of a disease that claims approximately two million lives each year."
The vaccine combines two TB proteins known to stimulate strong immune responses in humans. The proteins were initially identified by screening blood taken from volunteers who never became ill with tuberculosis despite long-term infection with Mycobacterium tuberculosis bacteria. Using recombinant DNA technology, the TB proteins were fused and then combined with adjuvants, substances that further boost the immune system's response to the vaccine. NIAID grants awarded in the late 1990s supported research that uncovered the most effective adjuvant-protein combination.
NIAID's TB program officer, Christine Sizemore, Ph.D., notes, "This clinical trial is a wonderful example of advances made possible through sustained support and creative use of resources in NIAID's TB program." NIAID initially funded Corixa scientists, under the direction of Steven Reed, Ph.D., in their identification of the most promising TB proteins for use in a vaccine. Versions of the candidate vaccine were tested in animals through an NIAID
Contact: Anne A. Oplinger
NIH/National Institute of Allergy and Infectious Diseases