Figure 2. Validation of the signature. (A) PCA plot in the training cohort. (B) PCA plot in the training and testing cohorts. (C) K-M survival curve of endometrial cancer patients in the training group. (D) K-M survival curve of endometrial cancer patients in the testing group. (E) Time-dependent ROC curve of endometrial cancer patients in the training group. (F) Time-dependent ROC curve of endometrial cancer patients in the testing group.