SLC19A1 and rheumatoid arthritis: SLC19A1 gene rs11702425 genotypes C/T and T/T were 0.38 and 0.26 times more likely to protect against RA under codominant comparison (OR = 0.38, 95% CI = 0.17 to 0.86, p = 0.02) (OR = 0.26, 95% CI = 0.11 to 0.6, p = 0.001), respectively.