CD4 and cholangiocarcinoma: The comparison of CC cases revealed that CD8 T cells (p = 0.003), resting CD4 memory T cells (p = 0.002), regulatory T cells (Tregs; p = 0.018), resting dendritic cells (p = 0.043), and activated mast cells (p = 0.012) were significantly different in low- and high-FPS groups for OS (Figure 3F), while CD8 T cells (p = 0.033), resting CD4 memory T cells (p = 0.025), regulatory T cells (Tregs; p = 0.021), and activated dendritic cells (p = 0.002) were different for RFS (Supplementary Figure S7E).