However, ATIC rs3821353 genotype T/T was 0.28 times more likely to protect against RA under codominant comparison (OR = 0.28, 95% CI = 0.13−0.60, p = 0.001) and the recessive model (OR = 0.26, 95% CI = 0.12 to 0.54, p < 0.001) (Table 4). Here, ATIC is linked to rheumatoid arthritis.