PTGS2 and neoplasm: We then analyzed the associations between CXCL2 expression and classical macrophage phenotype markers of M0 (undifferentiated) (AIF1), M1 (anti-tumor) (IL12A, TNF, NOS2, PTGS2) and M2 (tumor-promoting) (IL10, CD163, TGFB1, CSF1R) in TCGA-LIHC cohort with Spearman’s rank correlation test.