Immunohistochemical analysis of 24 pairs of HCC tissues and their respective adjacent tissues revealed that there were no statistically significant differences in the expression of FTH1 and SLC1A5 between the tumor tissues and adjacent counterparts (Figs. 13A and 13B, Figs. S5A and S5B). This evidence concerns the gene SLC1A5 and hepatocellular carcinoma.