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BMJ Publishing Group, Annals of the Rheumatic Diseases, 9(65), p. 1241-1243

DOI: 10.1136/ard.2006.055137

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Polymorphism at position +896 of the toll‐like receptor 4 gene interferes with rapid response to treatment in rheumatoid arthritis

This paper is available in a repository.
This paper is available in a repository.

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Abstract

The aim of this study was to determine whether the +896 A→G substitution of the Toll‐like receptor 4 (TLR4) gene, causing the Asp299→Gly change in the extracellular domain of TLR4, influences treatment response in recent‐onset rheumatoid arthritis. 169 patients with rheumatoid arthritis were genotyped from the Finnish Rheumatoid Arthritis Combination Therapy trial, in which they were treated either with only one disease‐modifying antirheumatic drug (DMARD) with or without prednisolone (single group), or with three DMARDs and prednisolone (combination group). Patients homozygotic for the wild‐type +896A allele were compared with those having the polymorphic G allele in terms of early clinical response (at 6 months) by the 28‐joint Disease Activity Score (DAS28). 1 of 20 (5%; (95% (confidence interval (CI) 1 to 5)) patients of the single group with TLR4 +896AG or GG and 29 of 67 (43%; (95% CI 31 to 56)) patients with AA were in remission (p = 0.001). DAS28 of the single group with TLR4 +896AG or GG was higher than with AA (p = 0.019). In the combination group, remission rates and DAS28 values were comparable between the genotypes. The polymorphic TLR4 +896G allele may impair treatment response to single DMARD treatment in recent‐onset rheumatoid arthritis.