alexa Effect of dexamethasone on autoantibody levels and arthritis development in patients with arthralgia: a randomised trial.
Immunology

Immunology

Rheumatology: Current Research

Author(s): Bos WH, Dijkmans BA, Boers M, van de Stadt RJ, van Schaardenburg D

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Abstract BACKGROUND: Rheumatoid arthritis is characterised by antibodies to citrullinated proteins (ACPA) and rheumatoid factor (RF) in the preclinical phase. OBJECTIVE: To determine whether an intervention aimed at decreasing autoantibody levels in people at risk may be effective in preventing progression to arthritis. METHODS: 83 patients with arthralgia positive for ACPA or IgM-RF were randomly allocated to intramuscular injections of 100 mg dexamethasone or placebo at baseline and 6 weeks. The primary end point was a 50\% antibody reduction or normalisation at 6 months. RESULTS: The primary end point was reached in one patient in each group. Patients treated with dexamethasone had reductions of antibody levels after 1 month (ACPA 222\% and IgM-RF 214\%), which persisted at 6 months for ACPA. During a median follow-up of 26 months, arthritis development in both groups was similar (20\% vs 21\%). CONCLUSION: In autoantibody-positive patients with arthralgia, dexamethasone treatment decreases ACPA and IgM-RF levels, but does not prevent arthritis development. TRIAL REGISTRATION NUMBER: ISRCTN73232918. This article was published in Ann Rheum Dis and referenced in Rheumatology: Current Research

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