The purpose of this study is to determine the Efficacy, Safety, and Pharmacokinetics of MP-435 administered for 12 weeks in subjects with rheumatoid arthritis (RA) on stable doses of Methotrexate.

Read more: http://www.clinicaltrials.gov/ct2/show/NCT01143337?cond=%22Arthritis%22&lup_s=07/28/2011&lup_d=30