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Updated: Sep 22, 2025

Isolation and Analysis of Plasma Lipoproteins by Ultracentrifugation
Published on: January 28, 2021
Existing and emerging strategies to lower Lipoprotein(a)
Gregory G Schwartz1, Christie M Ballantyne2
1Rocky Mountain Regional VA Medical Center and University of Colorado School of Medicine, Aurora, CO, USA.
Insights
Elevated lipoprotein(a) [Lp(a)] increases cardiovascular risk. While some treatments don't affect Lp(a), PCSK9 inhibitors and apheresis lower it, with new therapies showing potential for significant Lp(a) reduction.
Area of Science:
- Cardiology
- Biochemistry
- Pharmacology
Background:
- Elevated lipoprotein(a) [Lp(a)] is a significant, independent risk factor for cardiovascular disease.
- Many common cardiovascular risk reduction therapies have minimal or no effect on Lp(a) levels.
- Existing Lp(a)-lowering agents like niacin show limited cardiovascular benefits.
Purpose of the Study:
- To review current therapeutic strategies for managing lipoprotein(a)] associated cardiovascular risk.
- To evaluate the efficacy and impact of emerging therapies targeting Lp(a) reduction.
- To discuss the clinical implications of substantial Lp(a) lowering.
Main Methods:
- Review of existing clinical evidence and therapeutic guidelines.
- Analysis of pharmacological mechanisms of action for various cardiovascular drugs.
- Evaluation of outcomes from clinical trials involving Lp(a)-modulating agents.
Main Results:
- Standard therapies (aspirin, statins, fibrates, ezetimibe) show little impact on Lp(a).
- PCSK9 inhibitors and lipoprotein apheresis are effective in lowering Lp(a) and reducing cardiovascular risk.
- Novel agents like antisense oligonucleotides and small interfering RNA offer potential for >70% Lp(a) reduction.
Conclusions:
- Managing Lp(a)-associated cardiovascular risk presents a clinical challenge.
- PCSK9 inhibitors demonstrate benefit linked to baseline Lp(a) and reduction magnitude.
- Future outcomes trials are crucial to validate the clinical benefit of substantial Lp(a) lowering with new agents.
Abstract:
Abundant evidence links elevated levels of lipoprotein(a) (Lp(a)) to higher cardiovascular risk, leaving clinicians with the challenge of what measures to take to mitigate Lp(a)-associated risk. Some therapies that may reduce cardiovascular risk, such as aspirin, statins, fibrates, and ezetimibe, have little effect on Lp(a) and in some cases may even increase its concentration. Other agents that reduce levels of Lp(a), such as niacin or cholesteryl ester transfer protein inhibitors, have neutral or only slightly favorable effects on cardiovascular outcomes. The only currently available therapeutic approaches that lower Lp(a) and reduce cardiovascular risk are PCSK9 inhibitors and lipoprotein apheresis. For PCSK9 inhibitors, the magnitude of clinical benefit is associated with the baseline level of Lp(a) and appears to be associated with the degree of Lp(a) reduction. Antisense oligonucleotides and small interfering RNA agents targeting apolipoprotein(a) have the potential to reduce circulating Lp(a) concentrations by more than 70%. The results of cardiovascular outcomes trials will determine whether such substantial reductions in Lp(a) are associated with meaningful clinical benefit.
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