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The FDA extends its review date for the MS drug Tysabri - produced by Biogen Idec (BIIB) and...

  • Friday, October 21, 2011, 8:18 AM ET
    The FDA extends its review date for the MS drug Tysabri - produced by Biogen Idec (BIIB) and Elan (ELN) - indicating it needs the extension to review changes in the risk evaluation and mitigation strategies for the drug. Premarket: BIIB -6%, ELN inactive.
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