A lower differentiation grade tumor is implied by overexpression of SLC2A1, SLC2A5, SLC2A10, SLC2A11and lower levels of SLC2A3, SLC2A6, SLC2A9, SLC2A12, and SLC2A14, emphasizing the possibility of these molecular roles for predicting the course of the tumor. The gene discussed is SLC2A12; the disease is neoplasm.