| AEs | adverse events |
| NSCLC | non-small-cell lung cancer |
| ECOG | PS Eastern Cooperative Oncology Group performance status |
| ICI | immune checkpoint inhibitors |
| irAEs | immune-related AEs |
| LCPI | Lung Cancer Prognostic Index |
| LIPS | Lung Immuno-oncology Prognostic Score |
| NHS-Lung score | N = number of metastatic sites (cut-off ≥ 3) H = histology (i.e., squamous) S = SII (≥1440) |
| NLR | neutrophils-to-lymphocytes ratio |
| OS | overall survival |
| SII | systemic immune-inflammatory index |
| PD-L1 | programmed death ligand-1 |
| PFS | progression-free survival |
| TPS | tumour proportion score |
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