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Published in: Arthritis Research & Therapy 1/2006

Open Access 01-02-2005 | Research article

Adalimumab clinical efficacy is associated with rheumatoid factor and anti-cyclic citrullinated peptide antibody titer reduction: a one-year prospective study

Authors: Fabiola Atzeni, Piercarlo Sarzi-Puttini, Donata Dell' Acqua, Simona de Portu, Germana Cecchini, Carola Cruini, Mario Carrabba, Pier Luigi Meroni

Published in: Arthritis Research & Therapy | Issue 1/2006

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Abstract

Studies on autoantibody production in patients treated with tumor necrosis factor-α (TNF-α) inhibitors reported contradictory results. We investigated in a prospective study the efficacy of a treatment with human monoclonal anti-TNF-α antibody (adalimumab) in patients with rheumatoid arthritis (RA) and we evaluated the relationship between treatment efficacy and the incidence and titers of disease-associated and non-organ-specific autoantibodies. Fifty-seven patients with RA not responsive to methotrexate and treated with adalimumab were enrolled. Antinuclear, anti-double-stranded(ds)DNA, anti-extractable nuclear antigens, anti-cardiolipin (aCL), anti-β2 glycoprotein I (anti-β2GPI) autoantibodies, rheumatoid factor (RF) and anti-cyclic citrullinated peptide (anti-CCP) autoantibodies were investigated at baseline and after 6 and 12 months of follow-up. Comparable parameters were evaluated in a further 55 patients treated with methotrexate only. Treatment with adalimumab induced a significant decrease in RF and anti-CCP serum levels, and the decrease in antibody titers correlated with the clinical response to the therapy. A significant induction of antinuclear autoantibodies (ANA) and IgG/IgM anti-dsDNA autoantibodies were also found in 28% and 14.6% patients, respectively, whereas aCL and anti-β2GPI autoantibodies were not detected in significant quantities. No association between ANA, anti-dsDNA, aCL and anti-β2GPI autoantibodies and clinical manifestations was found. Clinical efficacy of adalimumab is associated with the decrease in RF and anti-CCP serum levels that was detected after 24 weeks and remained stable until the 48th week of treatment. Antinuclear and anti-dsDNA autoantibodies, but not anti-phospholipid autoantibodies, can be induced by adalimumab but to a lower extent than in studies with other anti-TNF blocking agents.
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Metadata
Title
Adalimumab clinical efficacy is associated with rheumatoid factor and anti-cyclic citrullinated peptide antibody titer reduction: a one-year prospective study
Authors
Fabiola Atzeni
Piercarlo Sarzi-Puttini
Donata Dell' Acqua
Simona de Portu
Germana Cecchini
Carola Cruini
Mario Carrabba
Pier Luigi Meroni
Publication date
01-02-2005
Publisher
BioMed Central
Published in
Arthritis Research & Therapy / Issue 1/2006
Electronic ISSN: 1478-6362
DOI
https://doi.org/10.1186/ar1851

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