“…GLUT1 has been found to be upregulated in the majority of cancer types, and GLUT2 expression is increased drastically in liver, pancreatic, gastric, and colon cancers. In addition, GLUT3 is upregulated in lung, neck, head, ovarian, breast, and bladder cancers, while GLUT4 is overexpressed in colon, lymphoid, breast, and pancreatic tumors (Macheda, Rogers, & Best, ; Qian, Wang, & Chen, ).…”