| ACPAs | Anti-citrullinated protein antibodies |
| ADAMTS | A Disintegrin and Metalloproteinase with Thrombospondin Motifs |
| Anti-CarP | Anti-carbamylated protein antibodies |
| CCR6 | Chemokine receptor 6 |
| cDMARDs | Conventional disease-modifying anti-rheumatic drugs |
| COX-2 | Cyclooxygenase-2 |
| CRP | C-creative protein |
| CTLA-4 | T-lymphocyte-associated protein 4 |
| CXCL12 | Chemokine C-X-C motif ligand 12 |
| DALYs | Disability-adjusted life years |
| DNMT | DNA methyltransferases |
| ECM | Extracellular matrix |
| ESR | Erythrocyte sedimentation rate |
| FGFs | Fibroblast growth factors |
| FLS | Fibroblast-like synoviocytes |
| GC | Glucocorticoids |
| GM-CSF | Granulocyte–macrophage colony-stimulating factor |
| HB-EGF | Heparin-binding EGF-like growth factor |
| HDAC | Histone deacetylases |
| HLA-DR | Human leukocyte antigen D-related |
| IgG | Immunoglobulin G |
| IL | Interleukin |
| IRF-5 | Interferon regulatory factor 5 |
| JAK/STAT | Janus-activated kinase signal transduction and activator of transcription |
| MAPK | Mitogen-activated protein kinase |
| M-CSF | Macrophage colony-stimulating factor |
| MDC | Myeloid dendritic cells |
| MHC | Major histocompatibility complex |
| MMPs | Matrix metalloproteinases |
| MSCs | Mesenchymal stem cells |
| MTX | Methotrexate |
| NF-κB | Nuclear factor kappa B |
| NF-κβ | Nuclear factor kappa-B |
| NO | Nitric oxide |
| NSAIDs | Non-steroidal anti-inflammatory drugs |
| OPG | Osteoprotegerin |
| PADI4 | Peptidyl arginine deiminase, type IV enzyme |
| PBMCs | Peripheral blood mononuclear cells |
| PDC | Plasmacytoid dendritic cells |
| PI3/AKT | Phosphatidylinositol 3 kinase-AKT |
| PlGF | Placenta growth factor |
| RA | Rheumatoid arthritis |
| RANKL | Receptor activator of nuclear factor-B ligand |
| RF | Rheumatoid factor |
| ROS | Reactive oxygen species |
| SAM | S-adenosine methionine |
| SLE | Systemic lupus erythematosus |
| SNPs | Single nucleotide polymorphisms |
| SYK/BTK | Spleen tyrosine kinase)/Bruton’s tyrosine kinase |
| TBX5 | T-box transcription factor 5 |
| Tfh | T follicular helper |
| TGF-β | Transforming growth factor beta |
| TIMPs | Tissue inhibitors of metalloproteinases |
| TNF-α | Tumor necrosis factor alpha |
| TRAF1 | Tumors necrosis factor receptor-associated factor 1 |
| Treg | Regulatory T cells |
| VCAM-1 | Vascular cell adhesion molecule 1 |
| VEGF | Vascular endothelial growth factor |
| Wnt/β-catenin | Wingless/integrated |