In TCGA microarray data set, HOXA5 had the highest expression in GBM patients without IDH mutation (P <0.001, respectively; Figure 4C), in GBM patients without radiotherapy (P <0.001, respectively; Figure 4D), and in GBM patients without chemotherapy (P <0.001, respectively; Figure 4E). Here, HOXA5 is linked to glioblastoma.