| SCLC | Small cell lung cancer |
| ES-SCLC | extensive-stage SCLC |
| PE | platinum-etoposide |
| TMB | Tumor Mutational Burden |
| Rb1 | retinoblastoma1 |
| DDR | DNA damage response |
| CHK1 | checkpoint kinase 1 |
| ATR | ataxia telangiectasia and RAD3-related protein |
| ATM | ataxia telangiectasia mutated |
| AURK | aurora kinase |
| EZH2 | enhancer of zeste homology 2 |
| LSD1 | lysine-specific demethylase 1A |
| DLL3 | delta-like ligand-3 |
| SSTR2 | somatostatin receptor 2 |
| TAZ | transcriptional coactivator with PDZ-binding motif |
| PD-L1 | Programmed death ligand-1 |
| BTK | Bruton Tyrosine Kinase |
| BTKi | Bruton Tyrosine Kinase inhibition |
| CPS | PD-L1 combined positive score |
| MSI | Micro-Satellite Instability |
| bTMB | blood-based tumor mutational burden |
| MMR | Mismatch repair |
| SLFN11 | protein Schlafen 11 |
| CPIs | check point inhibitors |
| PCI | prophylactic cranial irradiation |
| ORR | overall response rate |
| mPFS | median progression free survival |
| HR | hazard ration |
| CI | confidence interval |
| mOS | median overall survival |
| OS | overall survival |
| irBORR | best immune related ORR |