In addition, there was no significant difference of A20 expression level between RA patients with rs3799491 AA/GA genotypes (6.75 ± 5.25) and with rs3799491 GG genotype (5.61 ± 4.79) (P = 0.560) (Figure 6a). The gene discussed is TNFAIP3; the disease is rheumatoid arthritis.