Abbreviation	Full Term
LS-SCLC	Limited-stage small-cell lung cancer
SCLC	Small-cell lung cancer
ES-SCLC	Extensive-stage small-cell lung cancer
PCI	Prophylactic cranial irradiation
cCRT	Concurrent chemoradiotherapy
ICIs	Immune checkpoint inhibitors
NCCN	National Comprehensive Cancer Network
ESMO	European Society for Medical Oncology
BiTEs	Bi-specific T-cell engagers
IHC	Immunohistochemical
NSCLC	Non-small-cell lung cancer
TTF-1	Thyroid transcription factor-1
RB1	Retinoblastoma 1
TP53	Tumor suppressor protein 53
MYC	Myelocytomatosis
FHIT	Fragile Histidine Triad Diadenosine Triphosphatase
ASCL1	Achaete-scute homolog 1
NEUROD	Neurogenic Differentiation Factor 1
POU2F3	POU Class 2 Homeobox 3
HPF	High-pass filter
MRI	Magnetic resonance imaging
CT	Contrast-enhanced computed tomography
PET-CT	Positron emission tomography–contrast-enhanced computed tomography
EP	Platinum agent and etoposide
OS	Overall survival
PFS	Progression-free survival
TRT	Thoracic radiotherapy
AEs	Adverse events
ORR	Overall response rate
DOR	Duration of response