Medpage Today reports that the FDA has approved the biologic drug ocrelizumab (Ocrevus) for treatment of relapsing forms of multiple sclerosis. Ocrelizumab is an anti-CD20 monoclonal antibody targeting B cells which is the same mechanism of action as rituximab (Rituxan), which some earlier studies found to be effective against both relapsing-remitting and progressive MS. Off-label use of rituximab […]