| mCRC | Metastatic Colorectal cancer |
| CTCs | Circulating Tumour Cells |
| PD-L1 | Programmed Death-Ligand 1 |
| PLR | Platelet-to-lymphocyte ratio |
| ECOG PS | Eastern Cooperative Oncology Group Performance Status |
| PFS | Progression-free survival |
| OS | Overall Survival |
| DAPI | 40,6-diamidino-2-phenylindole |