Figure 6. Validation of prognostic model based on TRPGs. Kaplan-Meier survival analysis of high- and low-risk groups in validation dataset GSE14520 (A), OS. (B), RFS (log-rank tests, p <.001). The receiver operating characteristic curve for predicting 1-year, 3-year, and 5-year OS (C) and RFS (D) of HCC patients in GSE14520. TRPGs, tryptophan metabolism-related genes; HCC, hepatocellular carcinoma.