PD-1	programmed cell death 1
PD-L1	programmed cell death 1 ligand 1
PD-L2	programmed cell death 1 ligand 2
MHC	major histocompatibility complex
TCR	T cell receptor
APCs	antigen-presenting cells
CTLA-4	cytotoxic T lymphocyte-associated antigen-4
CD28	cluster of differentiation 28
CD80	cluster of differentiation 80
Gal-9	galectin-9
TIM-3	T cell immunoglobulin and mucin domain 3
irAEs	immune-related adverse events
Ig	immunoglobulin
ITIM	immunoreceptor tyrosine-based inhibitory motif
ITSM	immunoreceptor tyrosine-based switch motif
ICOS	inducible co-stimulatory molecule
NFAT	nuclear factor of activated T cells
FOX	Forkhead box protein
IRF9	interferon regulatory factor 9
CTLs	cytotoxic T lymphocytes
PI3K	phosphoinositide 3-kinase
PDK1	phosphoinositide-dependent kinase 1
mTOR	mammalian target of rapamycin
MAPKK	mitogen-activated protein kinase kinase
ERK	extracellular-signal-regulated kinase
JAKs	Janus kinases
STAT	signal transducers and activators of transcription
VISTA	V-domain Ig suppressor of T cell activation
CRD	carbohydrate-recognition domain
PD-1H	programmed cell death 1 homolog
PSGL-1	P-selectin glycoprotein ligand 1
VSIG3	V-set and Ig domain-containing 3
IFN-γ	interferon gamma
RGMb	repulsive guidance molecule b
GPI	glycosylphosphatidylinositol
BMP	bone morphogenetic proteins
Hh	Hedgehog
FDA	Food and Drug Administration
PTM	Post-transcription modification
IBD	inflammatory bowel disease
SLE	systemic lupus erythematosus
T1D	Type 1 diabetes
TLR	toll-like receptor
IFN-1	type I interferon
ANCA	antineutrophil cytoplasmic antibody
IBM	inclusion body myositis
PM	polymyositis
mAbs	monoclonal antibodies
aGVHD	acute graft versus host disease
LCMV	lymphocyte choriomeningitis virus
HIV	human immunodefficiency virus
HBV	hepatitis B virus
HCV	hepatitis C virus
COVID-19	coronavirus disease 2019
Tregs	regulatory T cells
EBV	Epstein-Barr virus
CAEBV	chronic active Epstein-Barr virus infection
allo-HSCT	allogeneic hematopoietic stem cell transplantation
Mbt	Mycobacterium tuberculosis
MDSCs	myeloid derived suppressor cells
FKBP	FK506-binding protein
LCN2	Lipocalin 2
map-PD-L1	membrane-anchored-protein PD-L1
Th2	T helper type 2
AHR	airway hyperreactivity
GTN	gestational trophoblastic neoplasia
ICIs	immune checkpoint inhibitors.