Figure 1.

Identification and validation of the EMT-related genes signature in the training, testing, and entire sets. The risk curve and scatter plot of each sample reordered by risk score and the heatmap showed the expression profiles of 10 ERGs in the low-risk group and high-risk group in the training set (A), testing set (B), and entire set (C). Each square represents a clinical sample, and its color is associated with the gene expression. The higher the gene expression, the darker the color (red represents upregulated genes, and blue represents downregulated genes). Kaplan–Meier survival curves and area under the curve (AUC) value of the prognostic factors of 10 ERGs in the training set (D, G), testing set (E, H), and entire set (F, I). (G) PCA reveals the difference between the high-risk and low-risk groups in the training set (J), testing set (K), and entire set (L). EMT, epithelial–mesenchymal transition; ERG, EMT-related gene; PCA, principal component analysis.