Abstract
Rheumatoid arthritis (RA) is an autoimmune disease characterized by chronic inflammation and the presence of self-reactive autoantibodies. Since the discovery of anti-cyclic citrullinated peptide (anti-CCP) antibodies, several assays have been developed to measure these autoantibodies in RA patients. The first-generation kit offered high specificity, but sensitivity was low. The second-generation IgG anti-CCP antibody assay (CCP2) offered the same high specificity, with greatly improved sensitivity for RA. INOVA Diagnostics, Inc. offers, in addition to CCP2, a third-generation assay with higher sensitivity compared with CCP2 and also a combined IgG/IgA anti-CCP antibody assay. The review covers the use of INOVA Diagnostics, Inc. multiple anti-CCP antibody assays in early detection of RA, while also comparing these assays with other commercially available methods of measuring anti-CCP antibodies. While most of the review focuses on the significance of these autoantibodies in adult RA patients, their role in juvenile idiopathic arthritis is also discussed. Detection of anti-CCP antibodies has emerged as one of the most important disease markers in RA patients. Several methods are available to measure anti-CCP antibodies, and isotyping and identification of citrullination targets are now the next step in further characterizing these autoantibodies.
Published Version
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