Human DC2/moDC and TAM signatures were generated based on our scRNAseq (Fig. 5 G) and correlated with three Treg-associated genes (i.e., FOXP3, CTLA4, and TIGIT) in patients undergoing RT of radioresistant tumors (i.e., melanoma, glioblastoma, and head and neck cancer). Here, CTLA4 is linked to head and neck cancer.