June 20 (Bloomberg) -- Pfizer Inc., the world's biggest drugmaker, failed to win U.S. approval for maraviroc, the first new type of medicine in a decade to treat the virus that causes AIDS.
Pfizer is working with the Food and Drug Administration on changes the agency sought on the product's labeling, the company said in a statement today. The FDA didn't ask for any further studies, said Ray Kerins, a Pfizer spokesman, in an interview. He declined to specify what label issues were under discussion.
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