An open, randomized comparison study of cyclosporine A, cyclosporine A + methotrexate and cyclosporine A + hydroxychloroquine in the treatment of early severe rheumatoid arthritis

Abstract

Purpose: To determine whether a regimen of cyclosporine (CSA) and methotrexate (MTX), or CSA and hydroxychloroquine (HCQ) introduced in early rheumatoid arthritis (RA) can produce a significant improvement in clinical outcome and/or retard radiographic damage in comparison with standard monotherapy with CSA alone.

Methods: One hundred five patients with active RA of less than 36 months duration, who had never previously been treated with immunosuppressive agents, were included in a 12-month, multi-center, open, randomized trial. Patients who fulfilled the criteria for early severe RA were randomized to receive either combination therapy (CSA + MTX n = 34, CSA + HCQ n = 35) or CSA alone (n = 36).

Results: CSA + MTX was more effective than the other two treatment groups in controlling RA symptoms. CSA+MTX did not show a significant radiographic progression according to Larsen-Dale (0.90 +/- 3.89 compared to baseline values, P > 0.05); moreover, patients treated with CSA alone or CSA+HCQ showed a significant worsening of Larsen-Dale score (2.91 +/- 5.99 and 2.97 +/- 4.28 respectively vs baseline values, P < 0.05), although not significant when compared with the CSA + HCQ group (P = 0.56 and 0.39, respectively).

Conclusions: This trial indicated that CSA+MTX was more effective than the other two treatments in improving clinical data and inhibiting radiographic progression, although the differences were not significant in this relatively small study. However, the difference was significant in favor of CSA + MTX regarding ACR 50% response.