Fig. 4

Construction and validation of the risk model. (A,B) Construction of prognostic risk model by LASSO regression analysis. (C–E) Survival analysis of training set, testing set and entire set. (F–H) ROC curves for predicting performance of training set, testing set and entire set. (I,J) External validation set (GSE19423) were used to verify the accuracy and specificity of our prognostic risk model.