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Methotrexate effect on anti-cyclic citrullinated peptide antibody levels in rheumatoid arthritis
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We read with interest the recent reports1–,3 focusing on the changes of rheumatoid factor and anti-citrullinated peptide antibodies (anti-CCP) during infliximab treatment in refractory rheumatoid arthritis (RA), unresponsive to conventional disease modifying antirheumatic drugs.
Alessandri et al3 reported that 24 weeks’ infliximab treatment reduced anti-CCP levels according to the study of Bobbio-Pallavicini et al.2 These results are in contrast with the findings of De Rycke et al, which showed no change of this autoantibody serum level after …