BICD1 (adjusted HR=1.280, P=0.267624) and MGMT expression (adjusted HR=1.115, P=0.620605) were not independent factors affecting the overall survival of GBM patients who did not receive radiation therapy, while age was still a significant factor (adjusted HR=2.126, P=0.001580), which suggested that BICD1 and MGMT expression may be specific biomarkers for predicting the response to radiation therapy (Table 9). Here, MGMT is linked to glioblastoma.