FDA Will Extend Regulatory Review Period for the Reintroduction of TYSABRIBiogen Idec (NASDAQ: BIIB) and Elan Corporation, plc. (NYSE: ELN) announced today that the U.S. Food and Drug Administration (FDA) informed the companies that the Agency will extend its regulatory review of TYSABRI(R) (natalizumab) as a treatment for multiple sclerosis by up to 90 days.
The companies have been informed by the FDA that the Agency requires additional time to review information regarding the TYSABRI risk management plan. Under this revised timeline, the companies anticipate action from FDA on or before June 28, 2006.