FCN2 and systemic lupus erythematosus: For FCN2 rs7851696, the TT genotype frequency was higher among SLE patients (10.0%) compared with HCs (3.0%) (OR, 3.59 [95% CI, 1.41 to 9.15]; P = 0.005), along with a higher frequency of the minor T allele among SLE patients (27.0%) compared with HCs (21.0%) (OR, 1.39 [95% CI, 1.00 to 1.93]; P = 0.047).