[Marfan syndrome]
G Jondeau1, C Boileau, B Chevallier
1Hôpital Ambroise Paré, 92100 Boulogne.
Abstract:
Marfan's syndrome is a monogenetic disease with an autosomal dominant transmission generally accompanied by type I fibrillin abnormality. This widely-distributed molecule participates in the structure of connective tissues so that any aberration may result in disease of many systems: skeletal morphology, dislocation of the lens, neurological or cutaneous signs and dilatation of the aorta predisposing to dissection, mitral valve prolapse being a common association. The diagnosis, clinical because of the size of the culprit gene and the multiplicity of the possible mutations, is sometimes difficult, and diagnostic criteria have been proposed. It is important to make the diagnosis because treatment is based on the restriction of violent exercise, betablocker therapy and regular echocardiographic monitoring of the ascending aorta, the region at highest risk of dilatation and dissection. A family enquiry is essential to make the diagnosis before the onset of complications in pauci-symptomatic patients (great intra-familial variability). Pregnancy poses special problems in these patients.
Insights
Marfan syndrome, a genetic disorder affecting connective tissue, often involves fibrillin-1 abnormalities. Early diagnosis and management, including exercise restriction and medication, are crucial for preventing aortic dissection.
Area of Science:
- Genetics
- Cardiology
- Rheumatology
Background:
- Marfan syndrome is an autosomal dominant genetic disorder.
- It is characterized by abnormalities in fibrillin-1, a key component of connective tissue.
- This condition affects multiple organ systems, including the skeletal, ocular, and cardiovascular systems.
Purpose of the Study:
- To summarize the clinical presentation and diagnostic challenges of Marfan syndrome.
- To highlight the importance of early diagnosis and management strategies.
- To discuss the implications for patient care, including exercise, medication, and monitoring.
Main Methods:
- Review of clinical features and genetic basis of Marfan syndrome.
- Discussion of diagnostic criteria and challenges.
- Outline of current treatment and management recommendations.
Main Results:
- Marfan syndrome presents with diverse clinical manifestations, including skeletal deformities, lens dislocation, and aortic dilatation.
- Aortic root dilatation is a major complication, increasing the risk of dissection.
- Diagnosis can be challenging due to the large gene size and numerous mutations, necessitating established diagnostic criteria.
Conclusions:
- Early diagnosis of Marfan syndrome is critical for timely intervention and prevention of life-threatening complications like aortic dissection.
- Management involves lifestyle modifications (e.g., exercise restriction), pharmacotherapy (e.g., beta-blockers), and regular echocardiographic surveillance of the aorta.
- Family history is essential for identifying at-risk individuals, especially in pauci-symptomatic cases, and pregnancy requires special consideration.
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