Quoted from http://www.reuters.com/article/2013/07/22/us-biogen-tecfidera-idUSBRE96L0UA20130722
Biogen says patient death unlikely linked to new MS drug
(Reuters) - The death of a patient who had taken Biogen Idec Inc's new multiple sclerosis drug, Tecfidera, was unlikely to be linked to the medicine, the company said on Monday.
Biogen said it was made aware last week of the death of a 59-year-old woman who had been treated with Tecfidera, and that it was actively gathering facts about the case.
Based on the circumstances of the case and the cause of death, "a link to Tecfidera is unlikely," said Biogen spokeswoman Kate Niazi-Sai.
"The patient was not on Tecfidera at the time of death," she added.