SLC2A9 and breast neoplasm: Specifically, SLC2A1, SLC2A6, SLC2A10, and SLC2A13 were significantly overexpressed, whereas SLC2A3, SLC2A4, SLC2A9, SLC2A11, and SLC2A12 had downregulated expressions in breast tumors compared with those in normal breast epithelium (Figure 1D).