Tysabri’s Success in Impairing the Immune System in RRMS May Be Source of Its Problems
Although Tysabri (natalizumab) is a highly effective in treatingĀ patients with relapsing-remitting multiple sclerosis (RRMS), some may developĀ progressive multifocal leukoencephalopathy (PML). According to a new study,Ā this occurs because TysabriĀ impairs immune surveillance in the central nervous system and reactivates the latentĀ John Cunningham polyomavirus (JCV). The study, “Natalizumab Affects…