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[Value of anti-cyclic citrullinated peptides antibodies in comparison with rheumatoid factor for rheumatoid arthritis
P Dubrous1, V Gardet, L Hugard
1Fédération de biologie médicale, HIA Robert-Picque, BP 28, 33998 Bordeaux-Armées, France. labos.hiarp@wanadoo.fr
Abstract:
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) 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 reached 71% and more among patients with joints symptoms. Anti-CCP antibody test could serve as a better diagnosis marker than rheumatoid factor.
