APOB and COVID-19: Compared with that in survivors, the temporal change in hs-CRP, PCT, plasma uric acid (PUA), and PUN in non-survivors had an obvious increase in the middle of the disease course, while monocyte percentage, antithrombin III, high-density lipoprotein cholesterol (HDL-C), nonhigh-density lipoprotein cholesterol (non-HDL-C), apolipoprotein A1, apolipoprotein B, and eGFR had an obvious decrease (Fig. 1), indicating that these variables could be used as laboratory markers to identify worsening COVID-19 during treatment.