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Rituximab, an anti-CD20 monoclonal antibody, has been approved for treatment in patients with rheumatoid arthritis (RA) who have failed treatment with tumour necrosis factor (TNF) blocking agents.1 Previous studies have demonstrated its safety, efficacy and prevention of radiographic progression;2 3 however few studies have yet addressed the timing of repeated courses of rituximab. A study in 22 patients with RA showed that treatment with repeated courses of rituximab over a 5-year follow-up period was safe and well tolerated4 and additionally an open-label extension study of 3 large randomised, double-blind studies in patients with RA showed that clinical efficacy was maintained with subsequent courses of rituximab, comparable to the first rituximab course, without increased additional safety concerns.5 Interestingly, one …
Competing interests: Hoffman-Roche provided free supplies of rituximab for the patients included in the study.
Funding: The study was supported by an unrestricted grant of Hoffman-Roche Ltd. The work of YKOT was supported by an Agiko grant from The Netherlands Organization for Scientific Research.
Ethics approval was obtained.
Ethics approval: Ethics approval was obtained.
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