Figure 6.

Establishment and verification of a prognostic gene signature for HCC. (A) The process of constructing the prognostic signature including 2 tumor microenvironment-related genes. First, univariate Cox regression screened 14 genes significantly associated with 3-year survival. Next, 3 genes were identified by Lasso Cox regression analysis. Then, only 2 genes were chosen to build a prognostic signature by multivariate Cox regression analysis. (B) The Kaplan-Meier curve of the 3-year survival rate between the high-risk and low-risk group was plotted according to the median risk score in TCGA.