For example, GLUT1 and GLUT3 are upregulated in breast cancer (Krzeslak et al. 2012), CRC (GabAllah et al. 2017; Dai et al. 2020), and non-small cell lung cancer (NSCLC) (Younes et al. 1997), and are closely associated with cancer progression. The gene discussed is SLC2A1; the disease is breast carcinoma.