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The Role of Lipoprotein(a) in the Progression of Aortic Stenosis
Clay Sherrill1, Lauren Ehrhardt-Humbert1, Deeb Salem2
1Department of Medicine, Tufts Medical Center, Boston, Mass.
Insights
Lipoprotein (a) drives calcific aortic stenosis progression. New RNA-based therapies aim to lower Lp(a) levels, but their impact on aortic stenosis and cardiovascular outcomes requires further study.
Area of Science:
- Cardiovascular Medicine
- Genetics
- Pharmacology
Background:
- Calcific aortic stenosis (CAS) is a complex, lifelong process influenced by genetics, lipids, inflammation, and stress.
- Lipoprotein (a) [Lp(a)] is a key driver of CAS progression, linked to earlier onset and faster hemodynamic deterioration.
- Standard lipid-lowering drugs do not effectively reduce Lp(a) levels.
Purpose of the Study:
- To review emerging therapeutics targeting serum Lp(a) reduction.
- To explore the potential of novel treatments, including RNA-based modifications, for managing CAS.
- To assess the correlation between Lp(a) lowering and improved cardiovascular outcomes.
Main Methods:
- Review of current scientific literature and clinical studies.
- Analysis of genetic and lipid-related factors in CAS.
- Examination of novel therapeutic strategies for Lp(a) management.
Main Results:
- Lp(a) is a significant factor in the development and progression of aortic stenosis.
- Existing treatments for low-density lipoprotein do not impact Lp(a) levels.
- Several novel therapies, particularly those using ribonucleic acid modification, are in development to lower Lp(a).
Conclusions:
- Novel Lp(a)-lowering therapies show promise for managing calcific aortic stenosis.
- Further research is needed to confirm if reducing serum Lp(a) translates to better cardiovascular health and reduced CAS.
- Understanding the role of Lp(a) is critical for developing effective treatments for aortic stenosis.
Abstract:
Calcific aortic stenosis is a complex process that involves several factors, including genetics, lipid infiltration, inflammation, and hemodynamic stress. This process begins at an early age and progresses throughout one's lifetime. Lipoprotein (a), or Lp(a), has been shown to drive progression of aortic stenosis in several studies. Additionally, analyses have demonstrated that a higher serum level of Lp(a) is associated with earlier onset of aortic stenosis and faster progression of mean pressure across the aortic valve. The current cornerstone medications to lower low-density lipoprotein do not have a meaningful impact on Lp(a) levels. In this article, we will review current therapeutics that are in development to lower serum Lp(a), including several that involve ribonucleic acid modification. Although these novel therapeutics are promising, it is to be determined whether lowering serum Lp(a) correlates to reduced calcific aortic stenosis and improved cardiovascular outcomes.
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