TF and colorectal cancer: In patients with colorectal cancer, the sIL-2R level was significantly correlated with neutrophil count (P < 0.01, r = 0.501) (Fig. 5a) and MDSC level (P < 0.05, r = 0.453) (Fig. 5b) and inversely correlated to lymphocyte count (P < 0.05, r = -0.472) (Fig. 5c) and transferrin level (P < 0.0005, r = -0.614) (Fig. 5d).