Strikingly, high expression of SLC2A1, encoding the glucose transporter GLUT1, and the glycolytic genes GAPDH and PGK1, were associated with strongly reduced OS, particularly in the adenocarcinoma subtype (Figure 3B), consistent with the prognostic value of FDG-PET in LuAd [29]. This evidence concerns the gene SLC2A1 and adenocarcinoma.