MS Related: Biogen hopes to have PML-related test by year-end
Posted Nov 17 2009 10:20pm
* Biogen working on test for virus related to PML
* Says risk of PML less than originally believed
* Physicians expected to increase Tysabri use
By Toni Clarke
BOSTON, March 25 (Reuters) - Biogen Idec Inc said on Wednesday it is developing a test that can identify the presence of a virus that can cause a potentially deadly brain infection in certain patients taking its multiple sclerosis drug Tysabri, and hopes to have it available by year-end.