RT Journal Article SR Electronic A1 Vinall, Maria T1 The AMBITION Study JF MD Conference Express YR 2008 FD SAGE Publications VO 8 IS 5 SP 14 OP 15 DO 10.1177/155989770800800508 UL http://mdc.sagepub.com/content/8/5/14.2.abstract AB Although studies have shown current anti-TNF treatments to be superior to short-term methotrexate (ie, before 24 weeks), none has shown superiority at Week 24. The AMBITION study [NCT00109408] showed that after 24 weeks, tocilizumab (an anti-IL-6 receptor antibody that inhibits IL-6 signaling) monotherapy was clinically superior to methotrexate (MTX) monotherapy in patients with rheumatoid arthritis who have not failed previous MTX or biologic treatment.