CPT2 and hepatocellular carcinoma: Metabolomic analysis of hepatocellular carcinoma cells showed that CPT2 was significantly downregulated in HCC samples, and the downregulation of CPT2 resulted in a notable increase in the levels of LCFAs, a significant decrease in the levels of short- and medium-chain FAs, and a clear inhibition of the carnitine shuttle system [135] (Figure 2).