9-501-061
January 9,2001
Abgenix and the XenoMouse
Meet XenoMouse
"Meet XenoMoussrl\4/'headlined the piece frorn the Abgenix information kit. (See Exhibit 1.) wortl-r meeting, XenoMouse was probably it. While Lee Majors played bionic rnan, Steven Austin, in the popular Six Milliott Dollar Man television series in the 1970s, XenoMouse could well be termed the "Three Billion Dollar Mouse." XenoMouse lived at Abgenix in Frernont, California, just across the Dunbarton Bridge frorn Silicon Valley's farned Highway 101. While no product based on the genetically engineered XenoMouse had yet reached the market, he was the source of the company's near $3 billion rnarket capitalization of March 3L, 2000.
If ever there was a mouse
The product of a seven-year, $40 rnillion research and development effort, XenoMouse was a unique strain of transgenic rnice capable of producing antibodies potentially useful in the treatment of human disorders including cancer, transplant rejectiory and inflammation. The idea of using rnice to produce antibodies for treating human diseases dated back to the 1970s; but only recently had therapies based on this approach passed the rigorous safety and efficacy tests necessary for regulatory approval. Many industry observers were now predicting an "antibody wave" as genornics research identified thousands more possible disease targets for antibody therapy. And, the ner / generation of technologies for generating antibodies from mice, including XenoMouse, were capable of producing therapies which were believed to be more effective and well tolerated by humans. Major pharmaceutical and biotech companies had licensed access to XenoMouse.
In April 2000, R. Scott Greer, President and Chief Executive Officer of Abgenix, described the company as "well positioned to ride the antibody wave" due to a strong financial position from a recently completed series of private placements and follow-on public offerings of