The OR for serum IL-23 > 3.1 pg/mL in SLE patients with the presence of atherosclerotic plaque in the right common femoral artery was 4.26 (95% CI 1.16–15.56), P = 0.029 (P = 0.058 after Bonferroni correction), and in the arteries of the lower extremities, it was 2.84 (95% CI 1.02–7.91), P = 0.046 (P = 0.092 after Bonferroni correction) (Table 7). The gene discussed is IL37; the disease is systemic lupus erythematosus.