| AJCC | American Joint Committee on Cancer |
| CfmiR | Cell-free miR |
| CfDNA | Cell-free DNA |
| CfNA | Cell-free Nucleic Acids |
| CII | Checkpoint Inhibitor Immunotherapy |
| CR | Complete Response |
| CTLA-4 | Cytotoxic T Lymphocyte-Associated Antigen 4 |
| IRAE | Immune-Related Adverse Events |
| DE | Differentially Expressed |
| FC | Fold-Change |
| FDR | False Discovery Rate |
| GEO | Gene Expression Omnibus |
| MBM | Melanoma Brain Metastasis |
| miR | MicroRNA |
| NED | No Evidence of Disease |
| NGS | Next-Generation Sequencing |
| PD-1 | Programmed Cell Death Protein-1 |
| PD-L1 | Programmed Cell Death Protein-1 Ligand |
| PD | Progressive Disease |
| PFS | Progressive-Free Survival |
| PR | Partial Response |
| NS | Non-Significant |
| RECIST | Response Evaluation Criteria In Solid Tumors 1.1 |
| REMARK | Reporting Recommendations For Tumour Marker |
| SD | Stable Disease |
| LDH | Lactate Dehydrogenase |
| ULN | Upper Limit Normal |
| WTA | Whole Transcriptome Assay |