SULT2A1 and hepatocellular carcinoma: We further measured the level of 27‐OHC in human tumors and found it higher in PVTT tissues compared with primary HCC tissues (Figure 3G), These studies again prove the vital status of 27‐OHC in HCC invasion and migration and indicate that the existence of 27‐OHC is required for the prometastasis effect of downregulating SULT2A1.