ERBB2 and glioblastoma: So far, interleukin 13 receptor subunit alpha 2 (IL-13R-alpha2), epidermal growth factor receptor variant III (EGFRvIII), human epidermal growth factor receptor 2 (HER2), CD276, Diganglioside GD2 (GD2), Ephrin A2 (EpA2) and PD-L1 [143, 144] have been exploited for the use in GBM treatment as all of them are frequently expressed in this malignancy.