Associations with disease activity (DAS28-CRP, SDAI, CDAI) were assessed via correlations and ROC analysis for active (moderate/high) versus inactive (remission/low) RA.<h4>Results</h4>All five indices were significantly elevated in RA patients compared to controls (all <i>P</i> < 0.001). The gene discussed is CRP; the disease is rheumatoid arthritis.