For example, GLUT2 is downregulated in renal cell carcinoma and chromophobes’ renal cell carcinoma [28], downregulation of GLUT4 was detected in clear cell renal cell carcinoma [29] and in pancreatic cancers [30], and the level of GLUT9 expression is decreased in prostate cancers [31]. Here, SLC2A2 is linked to renal cell carcinoma.