FDA says it confirmed new cases of brain inflammation linked to MS drug, bringing total to 13
NEW YORK — The Food and Drug Administration says it confirmed three new cases of a potentially lethal brain inflammation linked to the multiple sclerosis drug Tysabri.
There have been 13 reported cases of progressive multifocal leukoencephalopathy, or PML, since mid-2006. The reports are the first confirmed new cases since June. While the disease is rare, the FDA says the risk appears to increase as patients remain on Tysabri.
Experts have reported the first case of swine flu that is resistant to tamiflu - the main drug being used to fight the pandemic.