A Randomized, Double-blind, Trial of Anti-TNFa Chimeric Monoclonal Antibody (Infliximab) in Combination With Methotrexate Compared With Methotrexate Alone for the Treatment of Patients With Early Rheumatoid Arthritis

This is a randomized, multicenter, double-blind, active-treatment-controlled, three-arm, parallel study of chronic treatment with infliximab. This study will determine whether infliximab, at two different doses (3 mg/kg or 6 mg/kg) in combination with methotrexate (MTX), reduces the signs and symptoms (such as joint pain, swelling and stiffness) of rheumatoid arthritis. The study will also compare their effect on slowing down the joint damage associated with rheumatoid arthritis. Additional information on the safety of infliximab treatment will be obtained. The study will last for about 1 year. Patients will receive methotrexate and total of eight intravenous infusions of the study medication (Infliximab or placebo) spaced out over the first year. After the final infusion of study medication, several follow-up visits are to be made. Patients will receive methotrexate (start at 7.5mg/wk, increased to 20mg/wk by week8) and intravenous infusions of the study medication (Infliximab 3 or 6mg/kg, or placebo) at week 0, 2, and 6, and every 8 weeks thereafter through week 46.