| ACE2 | angiotensin-converting enzyme 2 |
| COVID-19 | coronavirus disease-2019 |
| CXCL8 | C-X-C motif chemokine ligand 8 |
| GEO | gene expression omnibus |
| IL1B | interleukin 1 beta |
| NAD | nicotinamide adenine dinucleotide |
| NAMPT | nicotinamide phosphoribosyltransferase |
| NCBI | National Center for Biotechnology Information |
| PTGS2 | prostaglandin-endoperoxide synthase 2 |
| RGS2 | regulator of G protein signaling 2 |
| SARS-CoV-2 | severe acute respiratory syndrome coronavirus 2 |
| TMPRSS2 | transmembrane serine protease 2 |