SLC6A4 and neoplasm: 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.