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Disease modification in rheumatoid arthritis with leflunomide.

Author(s): Emery P

Affiliation(s): Rheumatology and Rehabilitation Research Unit, University of Leeds, United Kingdom.

Publication date & source: 1999, Scand J Rheumatol Suppl., 112:9-14.

Publication type: Clinical Trial; Clinical Trial, Phase III; Multicenter Study; Randomized Controlled Trial

Rheumatoid arthritis (RA) is characterized by chronic inflammation and irreversible destruction of articular cartilage and bone. Disease progression as assessed by radiographic imaging of structural joint damage is a key outcome measure in RA. Joint damage is especially rapid during early phases of RA, thus the current trend of early aggressive therapy with disease-modifying antirheumatic drugs (DMARDs). Radiographic analysis of disease progression with the novel DMARD leflunomide was compared to methotrexate and sulfasalazine in two large, placebo-controlled, randomized Phase III studies (N = 580). The results as indicated by changes in x-ray scores indicate that leflunomide and both active comparators slow disease progression significantly better than placebo (P < or = 0.01). Slowing of disease progression with leflunomide was similar to sulfasalazine at 6 months but better than methotrexate (P < or = 0.049) at 12 months. These data verify the ability of leflunomide to slow disease progression and confirm its disease-modifying potential.

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