Figure 9. Prediction performance of angiogenic genes for OS and regression analysis between expression levels of different genes. (A–D) The expression of the angiogenic genes was synergistic with each other. (E–H) (K–M) survival curves indicated the OS in the high-expression group was significantly poorer than that in the low-expression group (P<0.05). (I–L) ROC curve analysis for OS prediction at 0.5, 1, 3 and 5 years.