NFKB1 and rheumatoid arthritis: We also observed a positive and strong correlation between NFKB1 gene expression and miR-9-5p (r=0.719; p<0.001) (Figure 2e) and the analysis of the subgroups RA patients (r=0.719; p<0.001) or controls (r=0.750; p=0.002).