In this sense, some studies evaluated the HDL-c anti-inflammatory and antioxidant activity, proving that the Serum amyloid A (SAA), Apolipoprotein A-1, Alpha-1 antitrypsin, and paraoxonase 1 (PON-1) (HDL-c associated proteins) are altered in SARS-CoV-2 infection which could be related to decreased functionality of HDL-c in COVID-19 severity23,46. Here, SERPINA1 is linked to COVID-19.