FUT6 and hepatocellular carcinoma: Furthermore, Guo et al15 characterized FUT6 in human hepatocellular carcinoma and found that FUT6 and its catalytic product, sLex, were strikingly increased in hepatocellular carcinoma tissues, and that FUT6 upregulation in hepatocellular carcinomas enhanced S-phase cell populations and encouraged cell growth and colony-forming ability.