H19 and hepatocellular carcinoma: As shown in Figure 2, this indicated that H19 overexpression in HCC tumor tissues might be a risk factor associated with HCC disease-free survival (mean survival time, high = 41.76 ± 4.35 and low = 62.54 ± 4.87 months, resp.; log rank P = 0.002, Figure 2(A)).