Consequently, a large variety of other tumors has been related to GLUT1 and GLUT3 over expression, such as pancreatic carcinomas [5,6,7], cervical carcinoma [8], esophageal squamous cell carcinoma [9], and squamous cell carcinoma of the head and neck (SCCHN) [10,11,12]. Here, SLC2A1 is linked to head and neck squamous cell carcinoma.