3. Patients who failed to respond to conventional treatment of at least 3 months duration with corticosteroids (equivalent dosage of prednisone 1.0mg/kg/day to start). Patients must also have failed two or more of the followings: TNF inhibitors (etanercept, infliximab), methotrexate, azathioprine, 6-MP, cyclosporin, tacrolimus, mycophenolate mofetil, gold, dapsone, colchicine, chloroquine/hydroxychloroquine or any other immunosuppressive or modulating drugs.