Objective: To describe the efficacy and safety of adalimumab in patients with rheumatoid arthritis (RA) who had previously discontinued infliximab treatment.
Methods: 24 patients with RA who discontinued treatment with infliximab (switchers) were treated with adalimumab (40 mg every 2 weeks, subcutaneously) for 12 months. The results were compared with those for 25 patients with RA receiving adalimumab who had not previously used an anti-tumour necrosis factor α inhibitor (controls). Disease activity was measured with the 28 joint count Disease Activity Score (DAS28), and clinical response with the American College of Rheumatology (ACR) 20% response criteria.
Results: At baseline there were no differences in demographic, clinical, and laboratory features between the two groups. After 12 months’ adalimumab treatment, clinical improvement was similar in both groups. More specifically, ACR 20% response criteria were achieved by 18/24 (75%) switchers and by 19/25 (76%) subjects in the control group. Four switchers discontinued the study—two because of adverse events and two because of lack of efficacy, while three control patients discontinued the study—one because of lack of efficacy and two owing to side effects.
Conclusion: Adalimumab is a well tolerated and effective treatment for patients with RA, even when infliximab has been discontinued.
- ACR, American College of Rheumatology
- DAS 28, 28 joint count Disease Activity Score
- MTX, methotrexate
- RA, rheumatoid arthritis
- TNFα, tumour necrosis factor α
- rheumatoid arthritis
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Published Online First 23 June 2005