IFNG and systemic lupus erythematosus: In this study, we only identified that the T allele of rs2069705 in IFNG promoter was marginally associated with SLE susceptibility in Anhui Chinese Han population (T vs. C: odds ratio [OR] = 1.12, 95% confidence interval [CI] = 1.00–1.26, P = 0.046), but did not survive bonferroni correction.