A Study of Tocilizumab (RoActemra) in Tocilizumab-Naive Participants With Rheumatoid Arthritis and Inadequate Response to Non-Biologic Disease-Modifying Antirheumatic Drugs (DMARDs) and/or Biologic Therapy

This two part, multi-center, open-label, single-arm study will evaluate the efficacy and safety of tocilizumab as a monotherapy or in combination with methotrexate or other conventional synthetic disease modifying antirheumatic drugs (csDMARDs) in participants with moderate to severe active rheumatoid arthritis who have an inadequate response or are intolerant to non-biologic csDMARDs and/or biologic therapy.