Tysabri
Wednesday, June 1st, 2005Tysabri, a multiple sclerosis drug given by infusion, has now been linked to three cases of progressive multifocal leukoencephalopathy, or PML. The two original patients who developed PML were taking the drug Avonex at the same time they took Tysabri to treat the symptoms of multiple sclerosis. The third patient was discovered to have PML [...]
