The impact of PCSK9 modulation on cardiovascular outcomes: recent advances and the managed care implications

Abstract

Cardiovascular disease (CVD) remains the leading cause of death globally. Hypercholesterolemia is a major modifiable risk factor for developing atherosclerotic CVD (ASCVD). Although statins are the foundational evidence-based treatment option, significant gaps in care exist as approximately 5% to 30% of patients do not tolerate statin therapy. Ezetimibe provides additional, but modest, reductions in low-density lipoprotein cholesterol (LDL-C) and ASCVD risk. The PCSK9 enzyme has emerged as a viable therapeutic target, resulting in the approval of 2 monoclonal antibodies, alirocumab and evolocumab, and a small interfering RNA molecule, inclisiran, that reduce LDL-C levels by approximately 60% and 50%, respectively. Alirocumab and evolocumab were approved in 2015 and have been shown to reduce ASCVD risk in secondary prevention patients; however, the cost of therapy has been a barrier to uptake despite significant price reductions. Inclisiran is unique in that it requires administration by a healthcare professional, thus creating challenges and unknowns when it comes to implementing this drug in clinical practice. Managed care professionals have considerable experience with developing approaches to providing access to novel injectable lipid-lowering therapies, such as alirocumab and evolocumab, and with the approval of inclisiran, they now have an expanding list of such therapies to incorporate into their care plans.