ACE	Angiotensin-converting enzyme
ACEI	Angiotensin-converting enzyme inhibitor
AngII	Angiotensin II
ARBs	Angiotensin II receptor blockers
CI	Confidence interval
CTCAE	Common Terminology Criteria for Adverse Events
CTLA-4	Cytotoxic T-lymphocyte-associated protein 4
ECOG	Eastern Cooperative Oncology Group
HR	Hazard ratio
ICI	Immune checkpoint inhibitor
ICIs	Immune checkpoint inhibitors
IL-6	Interleukin-6
irAE	Immune-related adverse event
irAEs	Immune-related adverse events
MDSCs	Myeloid-derived suppressor cells
NSCLC	Non-small cell lung cancer
OS	Overall survival
PD-1	Programmed cell death protein 1
PD-L1	Programmed death-ligand 1
PFS	Progression-free survival
RAS	Renin–angiotensin system
SCLC	Small cell lung cancer
SPSS	Statistical Package for the Social Sciences
TGF-β	Transforming growth factor-beta
TME	Tumor microenvironment
TNF-α	Tumor necrosis factor-alpha