| ACE-2 | angiotensin-converting enzyme 2 |
| CKD | chronic kidney disease |
| CX3CL1 | CX3C chemokine receptor 1 |
| COVID-19 | the coronavirus 2019 disease |
| ELISA | enzyme-linked immunosorbent assay |
| ESRD | end stage renal disease |
| IgG | immunoglobulin G |
| INF-γ | interferon gamma |
| IS | indoxyl sulfate |
| NF-κB | nuclear factor kappa-light-chain-enhancer of activated B cells |
| NLRP3 | NOD-, LRR- and pyrin domain-containing protein 3 |
| RBD | receptor binding domain |
| SARS-CoV-2 | severe acute respiratory syndrome coronavirus 2 |
| sVNT | surrogate virus neutralization test |