C5AR1 expression correlates strongly (r > 0.7) with the infiltration of macrophages in HNSC-HPVneg, LIHC, SKCM-Primary, SKCM-Metastasis, STAD, and THCA; neutrophils in PCPG, LUSC, SKCM, STAD, THCA, LIHC, LUAD, KIRP, KIRC, HNSC, DLBC, CHOL, and BRCA-Her2; and dendritic cells in various cancer types (ACC, BLCA, BRCA, BRCA-Basal, BRCA-Her2, BRCA-Luminal COAD, DLBC, GBM, HNSC, KICH, LGG, LIHC, LUAD, LUSC, MESO, PRAD, READ, SARC, SKCM, STAD, and UCS). This evidence concerns the gene C5AR1 and cancer.