RT Journal Article SR Electronic A1 Vinall, Maria T1 Tocilizumab, a Novel Monoclonal Antibody Targeting IL-6 Signaling, Significantly Reduces Disease Activity in Patients with Rheumatoid Arthritis JF MD Conference Express YR 2007 FD SAGE Publications VO 7 IS 4 SP 11 OP 11 DO 10.1177/155989770700700404 UL http://mdc.sagepub.com/content/7/4/11.1.abstract AB 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.