GM	Gut microbiome
GI	Gastrointestinal
CTL-4	Cytotoxic T-Lymphocyte Antigen 4
PD-1	Programmed cell death protein 1
PD-L1	Programmed death-ligand 1
ICIs	Immune checkpoint inhibitors
PRR	Pattern recognition receptors
NSCLC	Non-small cell lung cancer
SCFAs	Short chain fatty acids
WGCNA	Weighted Gene Co-expression Network Analysis
ECOG	Eastern Cooperative Oncology Group
i-RECIST	Response Evaluation Criteria in Solid Tumors
PFS	Progression-free survival
OS	Overall survival
NR	Non-responders
R	Responders
CTRLs	Controls
OTUs	Operational taxonomic units
VOCs	Volatile organic compounds
GC-MS/	Gas-chromatography-mass spectrometry/
SPME	Solid phase microextraction/
IS	Internal Standard
NMR	Nuclear magnetic resonance spectroscopy
TSP	Trimethylsilyl propionic acid sodium salt
IQR	Inter Quartile Range
FDR	False Discovery Rate
ME	Module eigengene
MM	Module membership
BS	Biomarker significance
CAR	Chimeric antigen receptor
FMT	Fecal microbiota transplantation