Switching therapies in MS – what is the evidence?
May 28, 2019…g for patients with a suboptimal response to a second-line agent. The most commonly-studied scenario is switching from natalizumab to another agent, often due to concerns about the cumulative risk of progressive multifocal leukoencephalopathy (PML). The University of Colorado MS group found that the risk of increased disease activity in the year following a switch from natalizumab to fingolimod depended on the duration of the washout period (Vollm…