A Safety and Efficacy Study of Golimumab (CNTO 148) in Patients With Active Rheumatoid Arthritis Despite Methotrexate Therapy

Inclusion Criteria: * Patients diagnosed with rheumatoid arthritis at least 3 months prior to registration and who are definitely identified as having rheumatoid arthritis, at the time of informed consent, according to the criteria for classification established by the American College of Rheumatology (1987) * Patients in whom MTX therapy (\>= 6 mg/week) was started more than 3 months before the first administration and who have been treated with MTX at a stable dose (6-8 mg/week) for at least 4 weeks before the first administration * Patients having at least 4 swollen joints and at least 4 tender joints at the time of registration and immediately before the first administration. Exclusion Criteria: * Patients with a history of hypersensitivity to human immunoglobulin proteins or other ingredients of golimumab * Patients who have previously experienced or are suffering from any of the following diseases: (i) Collagen diseases other than rheumatoid arthritis, (ii) Latent or active granulomatous infections such as histoplasmosis and coccidioidomycosis, (iii) Felty syndrome, etc * Patients with a severe, advanced, or poorly controlled disease in any of the kidney, liver, blood, gastrointestinal system, endocrine system, lung, heart, nervous system, psychiatric system, and brain.