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Published on: December 21, 2014
The fibrillin-1 gene: unlocking new therapeutic pathways in cardiovascular disease
Paddy M Barrett1, Eric J Topol
1Scripps Translational Science Institute, 3344 N Torrey Pines Court Suite 300, La Jolla, CA 92037, USA.
Insights
Genetic testing for FBN-1 mutations can identify individuals at increased risk for aortic disease. Early detection of FBN-1 mutations enables proactive cardiovascular monitoring and interventions.
Area of Science:
- Genomics
- Cardiovascular Medicine
- Genetic Pathology
Background:
- Advances in DNA sequencing reveal genomic alterations linked to polygenic cardiovascular diseases.
- Abnormalities of the proximal aorta were previously considered solely related to Marfan syndrome or aortopathy.
- FBN-1 mutations are now recognized as independent risk factors for cardiovascular complications.
Purpose of the Study:
- To explore the role of FBN-1 gene mutations in proximal aortic abnormalities.
- To highlight the cardiovascular risks associated with FBN-1 mutations beyond Marfan syndrome.
- To emphasize the importance of genetic awareness for early intervention in aortic disease.
Main Methods:
- Genomic sequencing to identify FBN-1 mutations.
- Clinical evaluation of cardiovascular phenotypes in affected individuals.
- Review of existing literature on FBN-1 mutations and aortopathy.
Main Results:
- FBN-1 mutations independently increase cardiovascular complication risk.
- Angiotensin receptor blockers show promise in reducing aortic root dilatation.
- Awareness of FBN-1 mutations necessitates vigilance for cardiovascular phenotypes.
Conclusions:
- FBN-1 gene mutations are significant contributors to proximal aortic disease and associated cardiovascular risks.
- Identifying FBN-1 mutations allows for earlier, targeted interventions and monitoring.
- Genetic insights into FBN-1 mutations can guide proactive management of aortic conditions.
Abstract:
The dramatic reductions in DNA sequencing costs allow us to delve deeper into the genomic alterations that increase susceptibility to many polygenic cardiovascular diseases. One such condition is an abnormal proximal aorta. Until recently, many believed that dilated, distorted or dissected proximal aortas might represent a forme fruste of Marfan syndrome or a continuum of aortopathy. Although an FBN-1 mutation does not guarantee the diagnosis of Marfan syndrome it is clear however that FBN-1 mutations independently confer additional risk for many of the cardiovascular complications classically associated with the disease. Furthermore, treatment with an angiotensin receptor blocker has proven effective in reducing rates of thoracic aortic root dilatation in preliminary studies of Marfan syndrome patients. Awareness of an FBN-1 mutation then highlights the need for increased vigilance for the associated cardiovascular phenotypes. Knowledge of an FBN-1 gene mutation may allow actionable interventions earlier in the natural history of the condition.
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