HLA-DRB1 and rheumatoid arthritis: Six alleles are negatively associated with RA in this study, HLA-DRB1*08, HLA-DRB1*11, HLA-DRB1*03, HLA-DRB1*13, HLA-DRB1*14 (DRB1*14∶02, a rare, shared epitope positive subtype of DRB1*14, was not found in our patients or controls), HLA-DRB1*07.