News wire article from our research archive:

FDA ALLOWS CLINICAL STUDIES OF TYSABRI FOR TREATMENT OF MULTIPLE SCLEROSIS TO PROCEED

The U.S. Department of Health & Human Services' Food & Drug Administration issued the following press release:

The Food and Drug Administration (FDA) is reporting that Biogen-IDEC and Elan Corporation announced yesterday that FDA removed the clinical hold on Biogen-IDEC's studies of Tysabri (natalizumab) for patients with multiple sclerosis. This will allow clinical trials to go forward. In February 2005 Biogen-IDEC had announced suspension of marketing and clinical trials after three patients developed progressive multifocal leukoencephalopathy (PML), a frequently fatal infection of the brain, two following treatment with natalizumab for MS, and one patient being treated for ...

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