ACPA	anti-citrullinated protein antibody
AS	ankylosing spondylitis
CCL	C-C motif chemokine ligand
CXCL	C-X-C motif chemokine ligand
DMARD	disease-modifying antirheumatic drug
ERA	enthesitis-related arthritis
FcγR	Fcγ receptor
GM-CSF	granulocyte-macrophage colony-stimulating factor
HIF	hypoxia-inducible factor
IC	immunocomplex
ICAM-1	intracellular adhesion molecule 1
IL	interleukin
ILAR	International League of Associations for Rheumatology
IFN	Interferon
IP-10	IFNγ inducible protein 10
IRAK	IL-1R-activating kinase
IRF	interferon regulatory factor
JAK	Janus kinase
JIA	juvenile idiopathic arthritis
LPS	lipopolysaccharide
MAPK	mitogen-activated protein kinase
MAS	macrophage activation syndrome
MCP-1	monocyte chemoattractant protein-1
MMP	matrix metalloproteinases
Mφ	macrophage
Mo	monocyte
MTX	methotrexate
MyD88	myeloid differentiation primary response protein 88
NFκB	nuclear factor kappa-light-chain-enhancer of activated B cells
NK	natural killer
NLRP3	NOD-, LRR-, and pyrin domain-containing protein 3
PBMCs	peripheral blood mononuclear cells
PPARγ	peroxisome proliferator-activated receptor gamma
RA	rheumatoid arthritis
RANTES	regulated upon activation, normal T cell expressed and presumably secreted
RF	rheumatoid factor
RANK	receptor activator of NFκB
RANKL	RANK ligand
SF	synovial fluid
sJIA	systemic onset JIA
SOCS	suppressor of cytokine signaling
STAT	signal transducer and activator of transcription
TGFβ	transforming growth factor beta
Th1	type 1 helper T cells
Th17	type 17 helper T cells
TLR	Toll-like receptor
TNF	tumor necrosis factor
TREM	triggering receptor expressed on myeloid cells
TRAF	TNF receptor associated factor
VEGF	vascular endothelial growth factor