Lee et al. [36], using a liquid chromatography-electrospray ionization-quadrupole-Orbitrap mass spectrometry (LC-ESI-Q-Orbitrap-MS) approach, identified immunoglobulin lambda variable 3-19 (IGLV3-19) and basonuclin zinc finger protein 2 (BNC2), two proteins involved in humoral immune response, acute phase reaction, lipid metabolism, and platelet degranulation, as novel potential prognostic markers for severe COVID-19. The gene discussed is IGLV3-19; the disease is COVID-19.