Biogen Idec (NASDAQ: BIIB) will present more than 60 company-sponsored platform and poster presentations on data supporting its marketed and investigational therapies for neurological diseases at the 66 th American Academy of Neurology (AAN) Annual Meeting in Philadelphia, April 26 – May 3, 2014. The scope and rigor of the data reflects Biogen Idec’s leadership in advancing neurological research and enhancing patient outcomes in multiple sclerosis (MS) and other diseases. “For more than 20 years, Biogen Idec has been dedicated to improving the lives of people with MS,” said Alfred Sandrock, M.D., Ph.D., group senior vice president, and chief medical officer at Biogen Idec. “We have a broad portfolio and pipeline of innovative MS medicines, we perform important research that continues to advance our understanding of this disease, and we provide meaningful support services for people living with MS. The breadth of data we are presenting at AAN reinforces our enduring commitment to reducing the impact of MS and other serious neurodegenerative diseases.” As part of its ongoing commitment to further understand the underlying causes of neurological disease, Biogen Idec is presenting new data to help patients and their healthcare providers make optimal treatment decisions and improve patient outcomes. In addition, data at AAN will include results from studies of its currently marketed products, TECFIDERA ® (dimethyl fumarate), TYSABRI ® (natalizumab), AVONEX ® (interferon beta-1a) and FAMPYRA ® (prolonged-release fampridine tablets), as well as findings from the clinical programs of its MS pipeline candidates PLEGRIDY™ (peginterferon beta-1a), daclizumab high-yield process (DAC HYP) and Anti-LINGO-1 (BIIB033). In addition to data presented at the meeting, Biogen Idec will support the American Brain Foundation’s 2014 Brain Health Fair. On Saturday, April 26 Biogen Idec will help sponsor a free, day-long family event that aims to connect thousands of patients, families and caregivers affected by neurological disease. The Brain Health Fair will offer scientific presentations and discussions, educational activities, and a film festival competition that aims to increase public awareness and understanding of neurological disease. Registration is free at BrainHealthFair.com.