Alpha fetoprotein (AFP) is an oncofetal protein that is highly expressed in fetal cells and in most patients with hepatocellular carcinoma (HCC), and it is a diagnostic marker of liver cancer (Bei and Mizejewski, 2011, 2020; Mizejewski, 2014, 2019; Bai et al., 2017; Kim et al., 2020; Mehta et al., 2020). Here, AFP is linked to liver cancer.