SLC2A1 and neoplasm: GLUT1 expression in different models of tumour growth has been closely correlated, first, with the rate of cell proliferation, and second, with the effectiveness of 18FGD-PET methodology as diagnostic imaging technique [20], given that, like glucose, 18FDG passes through the cell membrane via GLUTs, and then is subjected to phosphorylation by hexokinase to form FDG-6-phosphate.