Rheumatoid Arthritis
Conditions
Brief summary
Study to assess changes in synovial tissue before and after treatment with Abatacept in subjects with RA who remained on their background disease modifying anti-arthritis medications but who have failed previous therapy with anti-TNF (tumor necrosing factor)blocking agents.
Interventions
Parenteral, IV, 500 mg if \< 60 kg; 750 mg if \> 60 & \< 100 kg; 1000 mg if \> 100 kg, Monthly, 4 months.
Sponsors
Study design
Eligibility
Inclusion criteria
* RA for at least 1 year * Clear clinical signs of active RA in 1 knee joint * Meet ARA (1987) criteria for diagnosis of RA and ACR (1991) criteria for RA functional classes I, II, or III * Inadequate clinical response to a minimum of 3 months of therapy with anti-TNF-blocking agents * Taking background DMARDs for a minimum of 3 months and at stable doses for at least 28 days
Exclusion criteria
* Serious bacterial infection in last 3 months * History of TB * History of cancer within 5 years * Evidence of latent or active bacterial or viral infection * Intra-articular corticosteroids within 3 months * Exposure to live vaccines * Exposure to CTLA4Ig or BMS-188667 * Treatment with immunoadsorption column(s), mycophenolate mofetil, leflunomide, anakinra, cyclosporine, etanercept, adalimumab, infliximab, azathioprine, oral or parenteral gold, D-penacillamine, calcineurin inhibitors, cyclophosphamide or other alkylating agents
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Comparison of each subject's synovial tissue markers | at baseline and after 4 months of treatment with abatacept |
Secondary
| Measure | Time frame |
|---|---|
| assess baseline & post treatment synovitis by dynamic gadolinium enhanced MRI; determine concentrations of abatacept in synovial fluid & serum | after 4 months of treatment |
| assess safety & tolerability of abatacept | administered for 4 months |
Countries
United Kingdom