SLC12A5 and hepatocellular carcinoma: Similarly, in various human HCC cell lines (PLC/PRF5, HepG2, Huh7, MHCC‐97H, and HCCLM3), SLC12A5 protein expression levels were significantly higher than those in a normal human liver cell line (HL‐7702) (Figure 2A and Figure S2A).