Tumor expression of Glut-1 was associated with higher histologic grade (P < 0.001), ER negativity (P < 0.001), higher T stage (P < 0.001) and higher Ki-67 LI (P < 0.001), whereas CAIX was associated with higher Ki-67 LI (P < 0.001). The gene discussed is CA9; the disease is neoplasm.