Figure 2. Construction and validation of the prognostic model in the train, test, and entire sets. (A–C) Distribution of ARL scores, survival status, and expression levels of the seven core lncRNAs in the train, test, and entire sets. (D–F) Results of principal component analysis (PCA) in the train, test, and entire sets. (G–I) Survival differences between the low and high ARL score groups in the train, test, and entire sets. (J–L) Results of receiver operating characteristic (ROC) analysis of the prognostic model in the train, test, and entire sets.