In order to investigate the relevance of CXCR2 ligands in relation to tumor-associated cells, the correlation between CXCR2 ligands and infiltration levels of CD8+ T cells, conventional and plasmacytoid dendritic cells, MDSCs, NK cells, macrophages, neutrophils, and Treg cells were analyzed. Here, CXCR2 is linked to neoplasm.