MCM2 and hepatocellular carcinoma: Kaplan–Meier survival curve showed that HCC patients with high MCM2 mRNA levels had worse OS (median OS, 24.1 (13.8 -NA) months vs. 71.0 (51.0–104.0) months; log-rank, 4.124; p < 0.0001, log-rank test; Fig. 4C).