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  • Title: Contribution of the subjective components of the disease activity score to the response to biologic treatment in rheumatoid arthritis.
    Author: Jurgens MS, Overman CL, Jacobs JW, Geenen R, Cuppen BV, Marijnissen AC, Bijlsma JW, Welsing PM, Lafeber FP, van Laar JM, Utrecht Arthritis Cohort Study Group.
    Journal: Arthritis Care Res (Hoboken); 2015 Jul; 67(7):923-8. PubMed ID: 25504811.
    Abstract:
    OBJECTIVE: A significant proportion of patients with rheumatoid arthritis do not respond adequately to biologic treatment. We hypothesized that lack of response to (biologic) disease-modifying antirheumatic drugs (DMARDs) is high in patients in whom the subjective, patient-reported component of the Disease Activity Score 28 (DAS28) is high at baseline. The primary aim of our present study was to investigate the contribution of the more subjective versus the objective components of the DAS28 to response to biologic agents in RA patients, as well as the changes in this contribution over time. The secondary aim was to examine whether the value of this subjective contribution at baseline affects the response to treatment. METHODS: The DAS28-P (the subjective components of the DAS28 relative to the total DAS28) was calculated. Patients were derived from the computer-assisted Management in Early Rheumatoid Arthritis Trial-II and the Biologicals and Outcome Compared and Predicted in Utrecht Region in Rheumatoid Arthritis Study. Ordinal logistic regression analyses were performed. RESULTS: The DAS28-P score at baseline was not associated with the level of response according to European League Against Rheumatism criteria at 3 months. Overall, a significant reduction in the DAS28-P score was observed 3 months after start of treatment, showing a greater reduction of the combined subjective components in good responders. CONCLUSION: The results reject the hypothesis that the lack of response to biologic DMARDs is especially high in patients in whom the patient-reported component of the DAS28 is high at baseline; these subjective components are not linked to treatment response.
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