In univariate analyses (Table 2), gamma-glutamyl transpeptidase (GGT, P<0.001 and =0.020), alpha-fetoprotein (AFP, both P<0.001), tumor number (P=0.002 and <0.001), vascular invasion (both P<0.001), tumor differentiation (P<0.001 and =0.020), tumor size (both P=0.001) and CNLC staging system (both P<0.001) were identified as significant prognostic factors for OS and RFS in the primary cohort, respectively. Here, AFP is linked to neoplasm.