The Roche Group has disclosed data from a one-year analysis of an open-label Phase 3b trial of its multiple sclerosis treatment Ocrevus (ocrelizumab), a monoclonal antibody targeting CD20-positive B cells, a specific type of immune cell thought to contribute to myelin and nerve cell damage in the disease. The results showed that 75% of Ocrevus-treated patients with secondary progressive multiple sclerosis and primary progressive multiple sclerosis showed no evidence of disease progression. Moreover, 70% of these patients demonstrated stable or improved cognition after one year.