FCGR2A and rheumatoid arthritis: Conversely, the overall analysis identified a negative association between the FCGR2A H131R polymorphism and rheumatoid arthritis in two genetic models (dominant: OR 0.83, 95% CI 0.69-1.00, for HR + RR vs. HH; allelic comparison: OR 0.86, 95% CI 0.76-0.97, for R vs. H).