ROC curves of the two predictive models in the training set and the testing set.

<p>(A) ROC curve of the 349-gene predictive model in training set (200 samples, AUC = 0.826; <i>p<</i>0.001. (B) ROC curve of the 349-gene predictive model in the testing set (122 samples, AUC = 0.702; <i>p</i> = 0.022). (C) ROC curve of the 18-gene de-correlated predictive model in the training set (200 samples, AUC = 0.775; <i>p</i><0.001. (D) ROC curve of the 18-gene de-correlated predictive model in the testing set (122 samples, AUC = 0.614; <i>p</i> = 0.197).