Fig. 2

Molecular subtype: the lasso regression model results (A), the protein–protein interaction network (B); cluster plot showing two distinct groups in the TCGA database (C); Validation of the cluster: the Kaplan‒Meier curve results of overall survival (OS) (D), cancer-specific survival (E) and progression-free survival (F) in the TCGA dataset, cluster plot showing two distinct groups in the GSE13507 (G), and the Kaplan‒Meier curve results of OS in the GSE13507 dataset (H)