Value of anti-cyclic citrullinated peptides antibodies in comparison with rheumatoid factor for rheumatoid arthritis diagnosis

The detection of anti-cyclic citrullinated peptides (CCP) antibodies is a new marker for diagnosis of rheumatoid arthritis. We screened 100 patients suffering from rheumatic pathologies or from other affections where rheumatoid factor is frequently detected. The screening was assessed by a second generation ELISA (Immunoscan RA(R)) in comparison with agglutination assay (Latex and Waaler-Rose) and specific ELISA (IgM, IgG and IgA). The sensitivity of the anti-CCP is good (> 70%) with an excellent specificity (98%). In our study the predictive value of the Immunoscan RA(R) reached 71% and more among patients with joints symptoms. Anti-CCP antibody test could serve as a better diagnosis marker than rheumatoid factor. (C) 2004 Elsevier SAS. Tons droits reserves.