Liu et al. reported that WZB117, another potent GLUT1 inhibitor which inhibited glucose uptake with an IC50 value of 0.5 μM in A549 cells determined by 3H-2DG uptake assay, inhibited cancer cell growth with IC50 values of ~10 μM in both A549 and MCF-7 cells [7]. Here, SLC2A1 is linked to cancer.