In our reanalysis of the 2020 RA patient cohort [10], the results of the multivariable regression analysis revealed that serum MCP-1 and CRP, and blood ESR levels, were significantly correlated with DAS28-ESR, DAS28-CRP, and DAS28-MCP-1 scores (Table 3). This evidence concerns the gene CCL2 and rheumatoid arthritis.