Conversely, the expressions of BCHE, MAOA, CA2, SLC6A4, ABCG2, PPARG, CFD, CA4, PLA2G1B, CXCR2, PTGS2, ABCB1, S1PR1, AGTR1, KDR, ICAM1, MGLL, CLK1, and HSD11B1 were decreased in the tumor group compared to the normal group. Here, PTGS2 is linked to neoplasm.