Fig. 3

Immune cell composition in the tumor and stroma using Multiplex IHC. a The numbers of CD4+ and CD8+ lymphocytes are significantly smaller in the HPD group compared to those of the disease-controlled group. FOXP3 + CD4+ Treg cells are significantly larger in number in the HPD group. b CD68+ and CD163+ macrophages are more frequently observed in stroma of the HPD group, suggestive of M2 polarization. c CD11c + CAFs tend to increase and CD56+ NK cells are significantly reduced in the intra-tumoral area in the HPD group. IHC immunohistochemistry, HPD hyperprogressive disease, NK natural killer cells, DC dendritic cells. Statistical power: ** implies p value < 0.05, * implies p value < 0.5, † implies p value ≥0.5 but shows a clinical correlation