FCN2 and systemic lupus erythematosus: For FCN2 rs17514136, the heterozygous AG genotype was more common among SLE patients (29.5%) compared with HCs (7.0%) (OR, 5.56 [95% CI, 2.98 to 10.36]; P < 0.001), whereas the AA genotype was less frequent among SLE patients (55.5%) than HCs (84.0%) (OR, 0.24 [95% CI, 0.15 to 0.38]; P < 0.001).