Figure 4.
Comparison of changes in the M-MDSC frequencies in M-MDSC-low versus M-MDSC-high patients under immune checkpoint blockade. Patients in the M-MDSC-high group had a significant decrease in their M-MDSC frequencies (A, p=0.010). Those patients whose M-MDSC frequency stayed high had a significantly shorter overall survival compared with those with a decrease or an M-MDSC frequency that stayed low (B). **P<0.01. BL, baseline; FU, follow-up; M-MDSC, monocytic myeloid-derived suppressor cell; PBMC, peripheral blood mononuclear cell.