| AIH | autoimmune hepatitis |
| AKT | protein kinase B |
| ANCA | antineutrophil cytoplasmic antibody |
| APRIL | a proliferation-inducing ligand |
| AS | ankylosing spondylitis |
| BAFF | B-cell activating factor |
| BCMA | B-cell maturation antigen |
| Bcl-6 | B-cell lymphoma 6 |
| CHIP | Clonal hematopoiesis of indeterminate potential |
| CI | confidence interval |
| CIDP | chronic inflammatory demyelinating polyneuropathy |
| CXCR5 | C-X-C chemokine receptor type 5 |
| DM | dermatomyositis |
| HCV | hepatitis C virus |
| HIV | human immunodeficiency virus |
| HR | hazard ratio |
| ICOS | inducible T-cell co-stimulator |
| IFN-α | interferon alpha |
| Ig | immunoglobulin |
| IgA | immunoglobulin A |
| IgG | immunoglobulin G |
| IgG4-RD | immunoglobulin G4-related disease |
| IgM | immunoglobulin M |
| IL | interleukin |
| IL-6 | interleukin 6 |
| IL-17 | interleukin 17 |
| IL-21 | interleukin 21 |
| IL-23 | interleukin 23 |
| JAK | Janus kinase |
| MAGa | monoclonal autoimmune gammopathies |
| MAPK | mitogen-activated protein kinase |
| MBL | monoclonal B-cell lymphocytosis |
| MGCS | monoclonal gammopathy of clinical significance |
| MGNS | monoclonal gammopathy of neurological significance |
| MGRhS | monoclonal gammopathy of rheumatologic significance |
| MGRS | monoclonal gammopathy of renal significance |
| MGUS | monoclonal gammopathy of undetermined significance |
| MM | multiple myeloma |
| NAM | necrotizing autoimmune myopathy |
| NCI | National Cancer Institute |
| NF-κB | nuclear factor kappa B |
| NIS | National Inpatient Sample |
| OR | odds ratio |
| PANoptosis | pyroptosis, apoptosis, and necroptosis |
| PBC | primary biliary cholangitis |
| PD-1 | programmed cell death protein 1 |
| PI3K | phosphoinositide 3-kinase |
| PMR | polymyalgia rheumatica |
| POEMS | polyneuropathy, organomegaly, endocrinopathy, myeloma protein, and skin changes |
| RA | rheumatoid arthritis |
| SLE | systemic lupus erythematosus |
| SMM | smoldering multiple myeloma |
| SS | Sjögren’s syndrome |
| SSc | systemic sclerosis |
| STAT3 | signal transducer and activator of transcription 3 |
| TACI | transmembrane activator and CAML interactor |
| TAFRO | thrombocytopenia, anasarca, fever, reticulin fibrosis and organomegaly |
| T-CUS | T-cell clone of uncertain significance |
| Tfh | T follicular helper |
| Tfr | T follicular regulatory |
| TNF | tumor necrosis factor |
| TNF-α | tumor necrosis factor alpha |
| UCTD | undifferentiated connective tissue disease |