However, there is no clear consensus about the role of [18F]FDG in gastric cancer staging due to its low specificity and sensitivity related to the physiological uptake in gastric walls and inflammatory conditions and low avidity in diffuse-type, mucinous and signet ring gastric cancer caused by the relative acellularity and low glucose transporter 1 protein (GLUT1) expression [101]. Here, SLC2A1 is linked to gastric cancer.