Dataset from A Phase 2b, Randomized, Double Blind, Placebo Controlled Active Comparator, Multicenter Study To Compare 5 Dose Regimens Of CP- 690,550 And Adalimumab Versus Placebo, Administered For 6 Months In The Treatment Of Subjects With Active Rheumatoid Arthritis

The purpose of this study is to determine the effectiveness and safety, over 6 months, of 5 doses of CP-690,550 for the treatment of adults with active rheumatoid arthritis. Five out of seven subjects will receive CP-690,550. One out of seven will receive adalimumab (Humira®) and one out of seven will only receive inactive substances (placebo.)