APOA1 and COVID-19: These observations are in line with the literature, where a decrease in HDL and apoA1 was not only related to acute SARS-CoV-2 infection, but also the magnitude of its plasma concentration reduction can serve as a predictive marker for the severity of COVID-19 (Hilser et al. 2021; Ulloque-Badaracco et al. 2021; Chidambaram et al. 2022; Nain et al. 2022).