CRP and rheumatoid arthritis: Increasing serum miR-146b-3p levels in RA patients showed significantly positive correlation with the ESR (r = 0.731, Fig. 2a), CRP (r = 0.695, Fig. 2b), anti-CCP (r = 0.833, Fig. 2c), and RF (r = 0.834, Fig. 2d) of patients (P < 0.0001).