Panitumumab-IRDye800 concentrations (inferred from fluorescence; Supplemental Fig. 9) were higher inside tumoral outlines than in healthy adjacent tissue of HGG (3.9 vs. 1.6 ng/mg, P < 0.0001), HNSCC (8.1 vs. 3.9 ng/mg, P < 0.0001), and LAC (6.3 vs. 4.5 ng/mg, P = 0.0006) (Fig. 4B). This evidence concerns the gene LCT and head and neck squamous cell carcinoma.