Shan et al. prepared γ-Fe2O3 nanoparticles coated with dimercaptosuccinic acid and modified with 2-deoxy-D-glucose (γ-Fe2O3@DMSA-DG NPs) to target to GLUT1-overexpressed breast cancer for tumor imaging (Shan et al., 2012). Here, SLC2A1 is linked to neoplasm.