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Updated: Aug 18, 2025

A High-Throughput Luciferase Assay to Evaluate Proteolysis of the Single-Turnover Protease PCSK9
Published on: August 28, 2018
The impact of PCSK9 modulation on cardiovascular outcomes: recent advances and the managed care implications
1Nancy L. and Ronald H. McFarlane Professor of Pharmacy and Chair of the Department of Pharmacotherapy & Outcomes Science at the Virginia Commonwealth University School of Pharmacy, Richmond, VA.
Insights
Newer lipid-lowering therapies targeting PCSK9 offer significant LDL-C reductions for patients unable to tolerate statins. Managed care can leverage experience with injectables to integrate these advanced treatments.
Area of Science:
- Cardiovascular Medicine
- Pharmacology
- Health Economics
Background:
- Cardiovascular disease (CVD) is the leading global cause of death.
- Hypercholesterolemia is a major modifiable risk factor for atherosclerotic CVD (ASCVD).
- Statins are foundational but not tolerated by 5-30% of patients, necessitating alternative therapies.
Purpose of the Study:
- To review the role of novel lipid-lowering therapies targeting the PCSK9 pathway.
- To discuss the efficacy and implementation challenges of PCSK9 inhibitors, including monoclonal antibodies and small interfering RNA.
- To examine the implications for managed care in providing access to these advanced treatments.
Main Methods:
- Literature review of clinical trials and guidelines on PCSK9 inhibitors.
- Analysis of efficacy data for LDL-C reduction and ASCVD risk.
- Discussion of practical considerations for clinical implementation and managed care access.
Main Results:
- PCSK9 inhibitors (alirocumab, evolocumab, inclisiran) achieve substantial LDL-C reductions (50-60%).
- Alirocumab and evolocumab have demonstrated ASCVD risk reduction in secondary prevention.
- Inclisiran's unique administration and cost present implementation considerations for managed care.
Conclusions:
- PCSK9 inhibitors represent a significant advancement in managing hypercholesterolemia for statin-intolerant patients.
- Managed care professionals can adapt existing strategies for novel injectable therapies.
- Optimizing access to PCSK9 inhibitors is crucial for improving ASCVD outcomes.
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.
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