SLC2A1 and carcinoma: Furthermore, the overexpression of glucose transporter 1 (GLUT1) has been shown to be closely related to 18F-FDG uptake in human cancer,[37] and it has been widely reported that GLUT1 correlates with poor prognosis and tumor aggressiveness in lung[38] and colorectal[39] carcinomas and in squamous cell carcinoma of the head and neck[40].