Randomized Trialhigh evidence

Ten Years of Ocrelizumab in Relapsing Multiple Sclerosis: The OPERA I and II Randomized Clinical Trials.

JAMA neurology·October 5, 2026·PMID 42832215

Why it matters

Early, continuous high-efficacy therapy in relapsing MS yields durable protection against disability milestones, including progression independent of relapse activity. These long-term data help neurologists counsel patients on the benefits of initiating ocrelizumab promptly rather than escalating later.

Infographic summary of Ten Years of Ocrelizumab in Relapsing Multiple Sclerosis: The OPERA I and II Randomized Clinical Trials.
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