AFP and neoplasm: Moreover, the low-risk group was associated with a significantly superior prognostic outcome relative to the high-risk group with regard to subgroups classified by sex (female and male; Figures 3A,B), tumor grade (G1+G2 and G3+G4; Figures 3C,D), AFP content (< 20 and ≥ 20 ng/ml; Figures 3E,F), clinical stage (I + II; Figure 3G), T stage (T1+T2; Figure 3H), and age (> 60; Figure 3I) (p < 0.05).