Objectives: To determine the efficacy of subsequent disease modifying antirheumatic drug (DMARD) therapies after initial methotrexate (MTX) failure in patients with recent onset rheumatoid arthritis (RA), treated according to the DAS for 2 years.
Methods: In groups 1 and 2 of the BeSt study, 244 RA patients were initially treated with MTX 15–25 mg/week. Patients who discontinued MTX because of insufficient clinical response (disease activity score, DAS >2.4) or toxicity were classified as “MTX failures.” In group 1, these patients switched to sulfasalazine (SSA), then leflunomide and finally to MTX + infliximab (IFX). In group 2, “MTX failures” added SSA to MTX, then hydroxychloroquine (HCQ), then prednisone, and eventually switched to MTX + IFX. “MTX successes” were patients who achieved a DAS ⩽2.4 after 2 years while still on MTX monotherapy. Total Sharp/van der Heijde score (TSS) progression from 0–2 years was assessed in “MTX failures” versus “MTX successes.”
Results: After 2 years, 162/244 patients (66%) had discontinued MTX because of insufficient response or toxicity. Of these, 78% also failed on SSA (adding or switching), 87% subsequently failed on leflunomide (in group 1), and 64% on MTX + SSA + HCQ (in group 2). 34 of 48 patients (71%) in groups 1 and 2 were successfully treated with MTX + IFX. After 2 years, regardless of the “success” on subsequent DMARDs, “ MTX failures” had a median TSS progression of 3 units (mean 9) versus 1 unit (mean 3) in “MTX successes” (p = 0.007).
Conclusion: After failure on initial MTX, treatment with subsequent conventional DMARDs is unlikely to result in a DAS ⩽2.4 and allows progression of joint damage.
- rheumatoid arthritis
- joint damage
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Competing interests: Professor Dr FC Breedveld did a paid expert testimony for Centocor in 1996 and was a paid speaker in a Schering Plough sponsored symposia. Dr CF Allaart was a paid speaker in a Schering Plough sponsored symposium in 2006.
Funding: The BeSt study was supported by a grant of the Dutch College for Health Insurance Companies (CVZ). Schering-Plough and Centocor provided additional funding. The funding sources were not involved in the design of the study, the collection, analysis and interpretation of data, the writing of the report or the decision to submit the paper for publication.
All authors: FARR Trial Group, Leiden, Netherlands
- adverse drug events
- disease activity score
- disease modifying antirheumatic drugs
- erythrocyte sedimentation rate
- European League Against Rheumatism
- health assessment questionnaire
- interquartile range
- non-steroidal anti-inflammatory drugs
- rheumatoid arthritis
- Ritchie articular index
- smallest detectable change
- swollen joint count
- total Sharp/van der Heijde score
- visual analogue scale