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April 19, 2011

Biogen Test Finds Tysabri Patients With 1% Risk of Getting Brain Disease

Quoted from http://www.bloomberg.com/news/2011-04-15/biogen-test-finds-tysabri-patients-with-1-brain-disease-risk.html

Biogen Test Finds Tysabri Patients With 1% Risk of Getting Brain Disease

By Michelle Fay Cortez - Apr 15, 2011 5:34 PM ET

Biogen Idec Inc. (BIIB) has identified high-risk patients taking its multiple sclerosis drug Tysabri who have a 1 in 100 chance of developing a potentially deadly brain infection

from the medicine.

By analyzing the length of Tysabri use, previous treatments and results of a blood test for antibodies to the virus that causes the infection, doctors may spot patients with less than a 1 in 10,000 risk of progressive multifocal leukoencephalopathy, or PML, the analysis found. The drug’s U.S. label says the PML risk is 1.5 in 1,000 after two years of treatment.

 

[Article continues at original source]

Posted at 08:42 AM in Tysabri |

Tags: Biogen Idec, brain infection, drug safety, PML, progressive multifocal leukoencephalopathy, side effects, Tysabri

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