NECTIN1 and glioblastoma: Therefore, in the current study, we sought to define and compare sensitivity patterns of a panel of patient-derived xenografts including pediatric embryonal brain tumors, pediatric high-grade glial tumors, and adult glioblastoma, using clinically relevant oHSVs G207 and M002 (differs from M032 only by expressing murine IL-12 transgene instead of the human transgene) and to determine if the primary HSV-1 entry molecule nectin-1 (CD111) may be a useful biomarker to predict the response of malignant brain tumors to oHSV.