Inclusion Criteria:

• The patient has a diagnosis of RA based upon the American College of Rheumatology (ACR) 1987 Revised Criteria.
• The patient has active disease at both Screening and Baseline, as defined by both: ≥6 joints tender or painful on motion; and ≥6 joints swollen; and fulfills 1 of the following 2 criteria at Screening: 1.ESR (Westergren method) >28 mm in the local laboratory. 2. CRP >7 mg/L in the central laboratory
• Patient had an inadequate response to at least one DMARD (traditional or biologic) due to lack of efficacy or toxicity.
• No evidence of active or latent or inadequately treated infection with Mycobacterium tuberculosis.
• Patient has washed out of all DMARDs other that antimalarials

Exclusion Criteria:

• Blood dyscrasias including confirmed: 1. Hemoglobin <9 g/dL or Hematocrit <30%; 2. White blood cell count <3.0 x 109/L; 3. Absolute neutrophil count <1.2 x 109/L; 4. Platelet count <100 x 109/L
• History of any other autoimmune rheumatic disease other than Sjogren's syndrome
• No malignancy or history of malignancy.
• History of infection requiring hospitalization, parenteral antimicrobial therapy, or as otherwise judged clinically significant by the investigator, within the 6 months prior to the first dose of study drug