Further, we identified several markers with reduced expression in deceased patients, five of which have been linked to COVID‐19: (1) CCL5 has been associated with reduced mortality6; (2) the anticoagulant protein C is increased in COVID‐1947; (3) FMS‐related receptor tyrosine kinase 3 ligand has been linked to disease severity but not to mortality48; (4) TNF‐related apoptosis‐inducing ligand TRAIL (TNFSF10) is elevated in women but not in men with severe COVID‐19,49 and (5) fetuin B is elevated in patients who recovered from COVID‐19 compared to those who deceased.50 This evidence concerns the gene PROC and COVID-19.