Summary
The cytokine IL-6 plays a central role in maintaining chronic inflammation in rheumatoid arthritis (RA). Tocilizumab is the first humanized interleukin-6 receptor inhibiting monoclonal antibody and represents a novel mechanism of action to treat RA. This article presents data from the phase 3 Tocilizumab Pivotal Trial in Methotrexate Inadequate Responders [OPTION] international study, involving 623 patients with moderate to severe RA.
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