MDPI	Multidisciplinary Digital Publishing Institute
DOAJ	Directory of open access journals
WBRT	Whole brain radiation therapy
SRS	Stereotactic radiosurgery
ICI	Immune checkpoint inhibitors
CNS	Central nervous system
RPA	Recursive partitioning analysis
KPS	Karnofsky Performance Status
DS-GPA	Diagnosis Specific–Graded Prognostic Assessment
Gy	Gray
LC	Local control
OS	Overall survival
MRI	Magnetic resonance imaging
RT	Radiation therapy
LINAC	Linear accelerator
NCCN	National Comprehensive Cancer Network
APC	Antigen presenting cells
MHC	Major histocompatibility complex
CTLA-4	Cytotoxic T-lymphocyte-associated protein 4
dsDNA	Double-stranded deoxyribonucleic acid
STING	STimulator of INterferon Genes
DC	Dendritic cells
IFN	Interferon
ICD	Immunogenic cell death
ATP	Adenosine triphosphate
TGF-β	Transforming growth factor β
Tregs	T regulatory cells
TAMs	Tumor associated macrophages
DNA	Deoxyribonucleic acid
FDA	Food and Drug Administration
PD-1	Programmed death cell protein 1
PD-L1	Programmed death ligand-1
NSCLC	Non-small cell lung cancer
RCC	Renal cell carcinoma
CRC	Colorectal cancer
HCC	Hepatocellular carcinoma
SCLC	Small cell lung cancer
BBB	Blood brain barrier
VLA-4	Very late antigen-4
LFA-1	Leukocyte-function-associated antigen-1
H	Histology
M	Melanoma
N	Total number of patients
NR	Not reported
USA	United States of America