European Medicines Agency recommends update of product information of Tysabri
The European Medicines Agency's Committee for Medicinal Products for Human Use (CHMP) has recommended that the product information for Tysabri (natalizumab) be updated to further increase awareness about the risk of progressive multifocal leukoencephalopathy (PML) in patients with relapsing-remitting multiple sclerosis (MS) who have been treated with the medicine.