The proportions of MDSCs and M-MDSCs were correlated with CRP in RA patients (r=0.379, 0.594; p=0.036, p<0.001), AS patients (r=0.494, 0.801; p=0.023, p<0.001), OA patients (r=0.877, 0.746; p<0.001, p=0.002), and Gout patients (r=0.762, 0.883; p=0.017, p=0.002). The gene discussed is CRP; the disease is rheumatoid arthritis.