Interestingly, thirteen core ADME genes (ABCB1, ABCC2, ABCG2, CYP2D6, CYP2E1, CYP3A5, DPYD, GSTP1, GSTT1, NAT1, SLC15A2, SULT1A1, TPMT) were expressed in all 21 cancer types. This evidence concerns the gene SULT1A1 and cancer.