March 24 (Bloomberg) -- Biogen Idec Inc. may have found a treatment for the deadly brain infections that have been tied to use of its multiple sclerosis drug Tysabri, the biotechnology company’s fastest-growing product.
A malaria pill developed during the Vietnam War is being tested by Biogen on patients with progressive multifocal leukoencephalopathy, the brain disorder known as PML, said Al Sandrock, Biogen’s head of neurology research. Tysabri was pulled from the market in 2005 after three PML cases were reported. It was reintroduced a year later when U.S. regulators said the medication’s effectiveness, twice that of other MS drugs, outweighed its risks. .
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