LPL and myeloid sarcoma: It is conceivable that in MS, despite higher EL serum levels compared to HV (Table 2), the decreased activity of lipoprotein lipase, an enzyme involved in the biogenesis of HDL [48], as well as the degradation of HDL phospholipids by upregulated other serum phospholipases [49,50], or adiposity, known to affect HDL size, composition, and subclass distribution [51], mask the impact of EL on the phospholipid content of HDL.