As illustrated Figure 1C, significantly lower levels of MCP-1 were observed in RA patients with new-onset HZ compared to those without HZ (median, 98.21 pg/mL, interquartile range (IQR) 77.63–150.30 pg/mL versus median 142.3 pg/mL, IQR 106.7–175.6 pg/mL, p < 0.05). This evidence concerns the gene CCL2 and rheumatoid arthritis.