Protective effect of the HLA-DRB1*13:02 allele in Japanese rheumatoid arthritis patients.

ABSTRACT: Rheumatoid arthritis (RA) is a chronic systemic inflammatory disease. Certain HLA-DRB1 "shared-epitope" alleles are reported to be positively associated with increased RA susceptibility, whereas some of the other alleles may be negatively associated. However, studies on the latter are rare. Here, we focus on the protective effects of DRB1 alleles in Japanese RA patients in an association study. Relative predispositional effects (RPE) were analyzed by sequential elimination of carriers of each allele with the strongest association. The protective effects of DRB1 alleles were investigated in patients stratified according to whether they possessed anti-citrullinated peptide antibodies (ACPA). The DRB1*13:02 allele was found to be negatively associated with RA (P = 4.59×10(-10), corrected P (P

SUBMITTER: Oka S 

PROVIDER: S-EPMC4049831 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature