In RA patients we found a correlation between CD34+ cell number and vitamin D (rs = 0.706 p<0.001), fibrinogen (rs = -0.546, p<0.001), PWV (rs = 0.517, p<0.01) and cIMT (rs = 0.451, p<0.05), but not with CRP, DAS, or blood pressure values. This evidence concerns the gene CRP and rheumatoid arthritis.