APOB and coronary artery disorder: Apoprotein A1 (ApoA1), a significant component of high-density lipoprotein (HDL) involved in reverse cholesterol transport, and Apoprotein B (ApoB), the main apolipoprotein of low-density lipoprotein (LDL) and related lipoproteins, such as very-low-density lipoprotein (VLDL) and intermediate-density lipoprotein (IDL), are both strongly linked to premature coronary artery disease (pCAD) [64,65,66].