SLCO1B1 and cirrhosis of liver: Billington et al. [7] showed decreased protein levels of sodium-dependent taurocholate co-transporting polypeptide (NTCP), OATP1B3, OCT1, bile salt export pump (BSEP), and MRP2, with no change in P-gp, MRP3, OATP1B1, or OATP2B1 in HCV-induced liver cirrhosis.