| ADAM17 | A disintegrin and metalloproteinase 17 |
| ActRIIA | activin type IIA receptor |
| CAA | coronary artery abnormalities |
| CAL | coronary artery lesions |
| CCL | C-C motif ligand |
| CCR | C-C chemokine receptor |
| CRP | C-reactive protein |
| cTfh | circulating follicular helper T |
| CTLA-4 | cytotoxic T-lymphocyte associated protein 4 |
| CXCL | CXC chemokine ligand |
| CXCR | CXC chemokine receptor |
| DC | dendritic cell |
| FcγR | Fcγ receptor |
| FoxP3 | forkhead box P3 |
| GITR | glucocorticoid-induced TNF receptor family-related protein |
| HLA-DR | human leukocyte antigen-DR isotype |
| ICOS | inducible costimulatory |
| IFN-γ | interferon gamma |
| IL | interleukin |
| IVIG | intravenous immunoglobulin |
| KD | Kawasaki disease |
| KDSS | Kawasaki disease shock syndrome |
| LAIR-1 | leukocyte-associated Ig-like receptor-1 |
| MAS | macrophage activation syndrome |
| MCP-1 | monocyte chemoattractant protein-1 |
| mDC | myeloid dendritic cell |
| MPA | monocyte–platelet aggregates |
| NK | natural killer |
| PAF | platelet-activating factor |
| PD-1 | programmed cell death protein 1 |
| pDC | plasmacytoid dendritic cell |
| RORgt | retinoic acid receptor-related orphan receptor gt |
| ROS | reactive oxygen species |
| Th1/2 | T helper cell type ½ |
| TNF-α | tumor necrosis factor α |
| Treg | T regulatory cell |