Multiple sclerosis drug may raise JC virus antibody levels, leading to fatal brain infection
Multiple sclerosis drug may raise the risk of John Cunningham virus (JCV) resulting in a fatal brain infection. The study found that multiple sclerosis patients taking natalizumab may have a 10 times greater risk of developing a biomarker that indicates the risk of a deadly brain infection known as progressive multifocal leukoencephalopathy (PML). PML is ...click here to read more