Namely, OATP1B1 and OATP1B3 (gene symbols SLCO1B1 and SLCO1B3, respectively), which play an important role in the uptake of bile acids and many other endogenous and xenobiotic compounds by the hepatocytes, are expressed in HCC [6,7]. Here, SLCO1B3 is linked to hepatocellular carcinoma.