FEN1 and hepatocellular carcinoma: Cai, Wang & Tu (2019) identified twelve hub genes including BIRC5 and MCM2 in HCC. DTL and MCM2 were also identified as hub genes for HCC in another study (Sang et al., 2018). Shen et al. (2019) identified FEN1 and RFC4 as core genes by analyzing four HCC datasets.