We also observed positive correlations between IL-17 and IL-18 (rho = 0.47, p = 0.002), In linear regression models for the perPsA group, including lipid profile (LDL, HDL, TG, TC), clinical data (occurrence of enthesitis, dactylitis, uveitis are presented in Supplementary Table S1), treatment (with methotrexate, sulphasalazine, cyclosporine, NSAID, and glucocorticoids), and disease activity indices (CRP, ESR, DAPSA, ASDAS-CRP) we have found that IL-17, TG concentrations and tender joint count are associated with IL-18 level (Table 3). This evidence concerns the gene CRP and enthesitis.