Background and Objectives: Proprotein Convertase Subtilisin/Kexin type 9 inhibitors (PCSK9-i) are used to reduce LDL cholesterol in dyslipidemic patients who do not adequately respond to traditional therapies. PCSK9 can be inhibited through monoclonal antibodies (Alirocumab, Evolocumab) or siRNA (Inclisiran). Their lipid-lowering efficacy is established, but effects on vascular structure/function…