In particular, ApoB, VLDL, and IDL particles (Figure 4B), smaller-sized VLDL fractions (VLDL-2, -3, and -4), and IDL-bound lipids in cholesterol, triglycerides, and phospholipids were significantly different for COVID-19 compared with CS (Figures 4D,E,G,H). Here, APOB is linked to COVID-19.