Flow cytometry analysis revealed that CD11b+Gr-1+ MDSCs were higher in the tumor tissues and spleens of tumor-bearing mice when compared with the same in normal controls (44.13 ± 1.00 vs. 39.03 ± 2.38 vs. 6.03 ± 0.79%, P = 0.0002, P < 0.001). Here, ITGAM is linked to neoplasm.