| AUC | Area under the curve |
| BBB | Blood brain barrier |
| BM | Brain metastasis |
| cfDNA | Circulating cell-free DNA |
| CNA | Circulating nucleic acids |
| CSF | Cerebrospinal fluid |
| GBM | Glioblastoma |
| IDH | Isocitrate dehydrogenase |
| ITN | Intranasal |
| MGMT | O6-Methylguanine DNA methyltransferase |
| MRI | Magnetic resonance image |
| PET | Positron emission tomography |
| POH | Perillyl alcohol |
| ROC | Receiver operating characteristic |
| TMZ | Temozolomide |
| WHO | World Health Organization |