Figure 4.

Validation cohort to develop DEG-based predictive risk models. (a) The distribution and split point of the risk scores in the validation cohort. (b) The OS of the risk scores in the validation cohort. (c) PCA plot of the validation cohort proved the feasibility of grouping. (d) The heat map of differences in the expression of 4 genes in the high- and low-risk groups of validation cohorts. (e) In the validation cohort, KM curves showed that patients in the low-risk group had a better prognosis. (f) The area under the time-dependent ROC curves validated the accuracy of the risk score in predicting prognosis in the training cohort.