PMID- 18516964 OWN - NLM STAT- MEDLINE DCOM- 20080724 LR - 20151119 IS - 0047-1860 (Print) IS - 0047-1860 (Linking) VI - 56 IP - 4 DP - 2008 Apr TI - [New biomarkers for rheumatoid arthritis]. PG - 297-308 AB - Rheumatoid factor (RF) has been commonly used as a biomarker of rheumatoid arthritis (RA). It is important to diagnose RA early and to prevent joint destruction before irreversible damage occurs. For this purpose, several new biomarkers, such as anti-cyclic citrullinated peptide antibody (anti-CCP) and matrix metalloproteinase-3 (MMP-3), have become available for both the diagnosis and prognosis of RA. RF showed a tolerable sensitivity of 68.5% for RA, but low specificity of 77.1% for patients with other rheumatic diseases. Anti-agalactosyl IgG antibodies (CARF) showed a slightly higher sensitivity of 73.9%, but specificity as low as that for RF. In contrast, anti-CCP demonstrated high sensitivity of 76.1% and marked specificity of 92.4% for patients with other rheumatic diseases. Anti-CCP was significantly superior to other biomarkers on receiver-operating characteristic curve (ROC) analysis. Moreover, meta-analysis revealed that the pooled sensitivity and specificity were 67% and 95% for anti-CCP, and 69% and 85% for RF, respectively, and that anti-CCP was more specific than RF for diagnosing RA. On the other hand, MMP-3 has been suggested to be a prognostic biomarker as well as an evaluative biomarker for RA. We next examined if the diagnostic accuracy of early RA is improved by combining these biomarkers. The specificity of RF was not as high as anti-CCP but rose to 92% when combined with MMP-3. Thus, we concluded that anti-CCP is superior to other biomarkers in terms of diagnostic accuracy, and that these combined assays are useful in the early diagnosis of RA. FAU - Hayashi, Nobuhide AU - Hayashi N AD - Department of Clinical Laboratory, Kobe University Hospital, Kobe 650-0017. FAU - Nishimura, Kunihiro AU - Nishimura K FAU - Kumagai, Shunichi AU - Kumagai S LA - jpn PT - English Abstract PT - Journal Article PT - Review PL - Japan TA - Rinsho Byori JT - Rinsho byori. The Japanese journal of clinical pathology JID - 2984781R RN - 0 (Autoantibodies) RN - 0 (Biomarkers) RN - 0 (Immunoglobulin G) RN - 0 (Peptides, Cyclic) RN - 0 (cyclic citrullinated peptide) RN - 9009-79-4 (Rheumatoid Factor) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) SB - IM MH - Arthritis, Rheumatoid/*diagnosis MH - Autoantibodies/*blood MH - Biomarkers/blood MH - Early Diagnosis MH - Humans MH - Immunoglobulin G MH - Matrix Metalloproteinase 3/*blood MH - Meta-Analysis as Topic MH - Peptides, Cyclic/*immunology MH - Prognosis MH - Rheumatoid Factor/blood MH - Sensitivity and Specificity RF - 51 EDAT- 2008/06/04 09:00 MHDA- 2008/07/25 09:00 CRDT- 2008/06/04 09:00 PHST- 2008/06/04 09:00 [pubmed] PHST- 2008/07/25 09:00 [medline] PHST- 2008/06/04 09:00 [entrez] PST - ppublish SO - Rinsho Byori. 2008 Apr;56(4):297-308.