PMID- 23253237 OWN - NLM STAT- MEDLINE DCOM- 20130529 LR - 20151119 IS - 1756-185X (Electronic) IS - 1756-1841 (Linking) VI - 15 IP - 6 DP - 2012 Dec TI - Associations of HLA-DRB1 alleles with anti-citrullinated protein antibody-positive and anti-citrullinated protein antibody-negative rheumatoid arthritis in northern east part of Turkey. PG - 538-45 LID - 10.1111/j.1756-185X.2011.01604.x [doi] AB - AIM: The aim of this study was to investigate the associations between human leukocyte antigen (HLA)-DRB1 alleles with genetic susceptibility to rheumatoid arthritis (RA) and production of antibodies against cyclic citrullinated peptide (anti-CCP antibody) and rheumatoid factor (RF) in Turkish RA patients. METHODS: We studied 291 RA patients and 253 controls. Genotyping was performed by polymerase chain reaction with sequence-specific oligonucleotide probes hybridization method. Serum levels of anti-CCP antibody, IgM-RF and high sensitive C-reactive protein titers were measured by commercial kits using immunological methods. RESULTS: We found that HLA-DRB1*04 and *09 alleles were associated in anti-CCP+ and anti-CCP+ RA patients (P < 0.0001 and P < 0.001, respectively), while DRB1*01 and *04 were determined to be higher in RF+ RA patients (P < 0.001 and P < 0.0001, respectively). Moreover, DRB1*11 and DRB1*13 alleles were determined to be lower in RF and anti-CCP/RF+ RA patients (P < 0.001 for both). HLA-DRB1*04 was identified as a common responsible allele for susceptibility to the disease in anti-CCP, RF and anti-CCP/RF- RA patients (P = 0.0018, P = 0.0004 and P = 0.0023, respectively). HLA-DRB1*13 allele alone was found to be protective against to anti-CCP+ and RF- RA (P = 0.0003 and P = 0.006, respectively). On the contrary, there was no protective allele in anti-CCP/RF- RA as well as anti-CCP- RA patients. CONCLUSION: This study indicates that associate and protective HLA-DRB1 allele distributions are different in autoantibody (anti-CCP or RF or anti-CCP/RF)+ RA and autoantibody- RA patients, with exceptions of DRB1*04 and DRB1*13. CI - (c) 2012 The Authors. International Journal of Rheumatic Diseases (c) 2012 Asia Pacific League of Associations for Rheumatology and Blackwell Publishing Asia Pty Ltd. FAU - Ucar, Fahri AU - Ucar F AD - Departments of Medical Biology & Genetics, Karadeniz Technical University, Trabzon, Turkey. fahriucar61@yahoo.com FAU - Capkin, Erhan AU - Capkin E FAU - Karkucak, Murat AU - Karkucak M FAU - Yucel, Burcu AU - Yucel B FAU - Sonmez, Mehmet AU - Sonmez M FAU - Alver, Ahmet AU - Alver A FAU - Kaklikkaya, Nese AU - Kaklikkaya N FAU - Tosun, Mehmet AU - Tosun M FAU - Alemdaroglu, Emel AU - Alemdaroglu E FAU - Solak, Mustafa AU - Solak M LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110304 PL - England TA - Int J Rheum Dis JT - International journal of rheumatic diseases JID - 101474930 RN - 0 (Autoantibodies) RN - 0 (Biomarkers) RN - 0 (HLA-DRB1 Chains) RN - 0 (Peptides, Cyclic) RN - 0 (cyclic citrullinated peptide) RN - 9007-41-4 (C-Reactive Protein) RN - 9009-79-4 (Rheumatoid Factor) SB - IM MH - Adult MH - Aged MH - Arthritis, Rheumatoid/blood/epidemiology/*genetics/immunology MH - Autoantibodies/*blood MH - Biomarkers/blood MH - C-Reactive Protein/analysis MH - Case-Control Studies MH - Chi-Square Distribution MH - Female MH - Gene Frequency MH - Genetic Predisposition to Disease MH - HLA-DRB1 Chains/*genetics MH - Humans MH - Male MH - Middle Aged MH - Odds Ratio MH - Peptides, Cyclic/*immunology MH - Phenotype MH - Rheumatoid Factor/immunology MH - Turkey/epidemiology EDAT- 2012/12/21 06:00 MHDA- 2013/05/31 06:00 CRDT- 2012/12/21 06:00 PHST- 2012/12/21 06:00 [entrez] PHST- 2012/12/21 06:00 [pubmed] PHST- 2013/05/31 06:00 [medline] AID - 10.1111/j.1756-185X.2011.01604.x [doi] PST - ppublish SO - Int J Rheum Dis. 2012 Dec;15(6):538-45. doi: 10.1111/j.1756-185X.2011.01604.x. Epub 2011 Mar 4.