Fatty acid degradation-related genes included ALDH3A2, ADH5, ADH1B, and ALDH1B1 and fatty acid metabolism-related genes HACD2, FASN, HSD17B8, and HACD3. These genes were relatively high in HCC samples with high PDZK1 expression (Figures 4(c) and 4(d)). This evidence concerns the gene HACD3 and hepatocellular carcinoma.