Marfan syndrome is a rare disease that affects about 1 in 5,000 people worldwide. Although it may seem daunting, modern medicine offers effective treatment and management options that allow people with Marfan syndrome to live full and active lives.

What is Marfan syndrome?

Marfan syndrome is a genetic disorder that affects the connective tissues that provide structure and support to the body. This syndrome is named after the French pediatrician Antoine Marfan, who first described the condition in 1896. Marfan syndrome is associated with mutations in the FBN1 gene, which encodes the protein fibrillin-1.

How does Marfan syndrome affect the body?

Marfan syndrome can affect several body systems:

• Heart and blood vessels: can cause enlargement of the aorta (aneurysm), aortic dissection (rupture), heart valve problems, which can lead to heart failure or sudden cardiac death.
• Skeletal system: tall stature, long limbs, joint hypermobility, scoliosis, chest deformities.
• Eye problems: dislocation of the lens (ectopia lentis), myopia, glaucoma, cataract, retinal detachment.
• Lungs: increased risk of lung collapse (pneumothorax), pulmonary emphysema.
• Skin: stretch marks without obvious weight gain or loss.
• Nervous system: dura ectasia, an enlargement of the covering of the spine that can cause back pain and neurological symptoms.

Causes of Marfan syndrome

Genetics

Marfan syndrome is caused by mutations in the FBN1 gene located on chromosome 15. The FBN1 gene encodes the protein fibrillin-1, which is essential for the elasticity and strength of connective tissue. Fibrillin-1 forms microfibrils, which are the basis of connective tissue structure and regulate the activity of transforming growth factor beta (TGF-β).

Autosomal dominant mode of inheritance

• Dominant mutation: one defective copy of the gene is enough to develop the syndrome.
• 50% risk: if one parent is a carrier, the child has a 50% chance of inheriting the syndrome.

New mutations

• 25% of cases: marfan syndrome occurs spontaneously without a family history.
• Gene mutations: can occur in any process of transfer of genetic material.

How do mutations affect the body?

Fibrillin-1 deficiency causes:

• Connective tissue weakness: reduced flexibility and strength, which affects blood vessels, heart valves, tendons and other structures.
• Dysregulation of TGF-β: increased TGF-β activity can lead to excessive cell growth and differentiation that contributes to symptoms such as aortic dilation.

Symptoms that cannot be ignored

The symptoms of Marfan syndrome can vary from mild to severe. Some people may have only a few symptoms, while others may have a wide spectrum of symptoms. Symptoms can appear at any age, but often become more pronounced during a growth spurt in the teenage years.

Features of the skeletal system

• Tall stature and long slender limbs: body proportions are different, with long arms and legs compared to body length.
• Long finger and toe joints (arachnodactyly): the fingers are long and slender, sometimes called "spider fingers".
• Hypermobility of joints: joints are excessively mobile, which can cause pain or instability.
• Chest deformities:

  • Hollow chest (pectus excavatum): the chest is hollowed inwards.
  • Protruding chest (pectus carinatum): the chest is protruding.
• Scoliosis or kyphosis: curvature of the spine to the side or front/back, which can cause pain and breathing problems.
• Flat feet: feet with low or no arches, which can cause discomfort when walking.
• Facial features: long, narrow face, high palate, small lower jaw.
• Dental problems: the teeth may be crowded, requiring orthodontic treatment.

Cardiovascular symptoms

Aortic dilatation or aneurysm:

• Ascending aorta: the most commonly affected area that can expand and rupture.
• Symptoms: often there are no symptoms until complications develop.

Aortic dissection:

• Rupture in the aortic wall: a life-threatening condition with sudden, severe chest or back pain.

Heart valve problems:

• Mitral valve prolapse: prolapse of the valve back into the left atrium.
• Aortic valve insufficiency: the valve fails to close completely, causing blood to back up.

Eye problems

• Dislocation of the lens (ectopia lentis): the lens moves from its normal position, which can cause visual disturbances.
• Nearsightedness (myopia): unable to see clearly in the distance.
• Glaucoma: increased pressure in the eye, which can damage the optic nerve.
• Cataracts: clouding of the lens that impairs vision.
• Retinal detachment: detachment of the retina from the base, which can cause vision loss.

Pulmonary symptoms

• Increased risk of lung collapse (pneumothorax): leakage of air into the pleural space, causing lung collapse.
• Emphysema: lung tissue damage that reduces breathing efficiency.
• Difficulty breathing: due to spinal deformities or lung damage.

Skin symptoms

• Striae: reddish or purple lines on the skin, often on the shoulders, hips or back.
• Slow wound healing: connective tissue weakness can affect the skin's ability to regenerate.

Nervous system symptoms

Dural ectasia:

• Expansion of the spinal cord: may cause back pain, headache, numbness or weakness in the legs.

Neurological symptoms:

• Dizziness, headache: due to spinal or vascular problems.

When to seek medical help

If you notice any of the above symptoms, especially if there is a family history of Marfan syndrome or sudden cardiac death, it is important to consult a doctor. Early diagnosis and treatment can prevent serious complications.

Emergency situations:

• Sudden, severe chest or back pain: may indicate aortic dissection.
• Sudden loss of vision or "curtain" in the field of vision: may indicate retinal detachment.
• Difficulty breathing or sudden shortness of breath: may be a sign of pneumothorax.

Diagnostics

Diagnosing Marfan syndrome can be difficult because the symptoms can vary and overlap with other diseases, such as Ehlers-Danlos syndrome or Lois-Diets syndrome.

Medical history and physical examination

Medical history:

• Symptoms and their duration.
• Family history of Marfan syndrome or connective tissue diseases.

Physical examination:

• Assessment of the skeletal system: body proportions, joint mobility, spine and chest deformations.
• Cardiovascular Assessment: listening to heartbeat, measuring blood pressure.
• Eye examination: basic eye examination to determine visual acuity.

Diagnostic criteria

Ghent criteria (2010 revision):

• Systemic score: based on physical features in different systems.
• Aortic root aneurysm or dissection.
• Dislocation of the lens.
• The presence of a mutation in the FBN1 gene.
• Family history.

Diagnosis is based on a combination of these criteria.

Diagnostic tests

Imaging diagnostics

• Echocardiography: an ultrasound of the heart to evaluate the heart valves and aortic root.
• Transesophageal echocardiography: a more detailed picture of the heart and aorta using a probe in the esophagus.
• Magnetic resonance imaging (MRI): detailed visualization of the cardiovascular system.
• Computed Tomography (CT): vascular evaluation, especially when MRI is not possible.

Eye examinations

• Ophthalmological examination with a slit lamp: assessment of the condition of the lens and the internal structures of the eye.
• Measurement of intraocular pressure: for glaucoma detection.

Genetic tests

• Sequencing of the FBN1 gene: identifies specific mutations.
• Testing family members: for early diagnosis and treatment.

Additional tests

• Pulmonary function tests: assess respiratory efficiency.
• MRI of the spine: for detection of dural ectasia and spinal deformities.

Treatment options

There is no cure for Marfan syndrome, but treatment can help manage symptoms and prevent complications. The treatment approach is multidisciplinary, involving doctors of various specialties.

Cardiovascular treatment

Surgical interventions

Aortic corrections or replacements:

• Indications: The diameter of the aorta exceeds certain criteria (usually 5 cm) or increases rapidly.
• Procedures:

  • Replacement of the aortic root with a prosthetic vessel.
  • Benthal operation: Replacement of the aortic root and aortic valve.

Correction or replacement of heart valves:

• If there is severe valvular insufficiency or prolapse.

Eye treatment

Glasses or contact lenses:

• Corrects refractive errors such as nearsightedness.

Surgical intervention:

• For lens dislocation: lens extraction and intraocular lens implantation.
• Retinal detachment: surgical fixation.

Glaucoma or cataract treatment:

Treatment of the skeletal system

• Orthopedic corsets or braces: for the treatment of scoliosis, especially in children and adolescents.
• Physiotherapy: strengthening and stretching exercises to improve muscle strength and posture.
• Surgery: for the correction of severe scoliosis or chest deformities.

Lung treatment

Treatment of pneumothorax:

• In case of minor pneumothorax: oxygen therapy and monitoring.
• For large or recurrent pneumothorax: chest drainage or surgery (pleurodesis).

• Respiratory rehabilitation: improve lung function and respiratory efficiency.

Lifestyle adjustment

Limitation of physical activities:

• Avoid contact sports, heavy lifting, intense physical exertion.
• Moderate activities are recommended, eg walking, swimming.

• Healthy diet: a balanced diet rich in vitamins and minerals.
• Smoking cessation: reduces the risk of lung complications.
• Stress management: emotional well-being is important for overall health.

Psychological support

• Psychological counseling:helps cope with the emotional and psychological challenges of chronic illness.
• Support groups: sharing experiences with other patients and families, providing emotional support and practical advice.

How to live with Marfan syndrome?

Education and awareness

• Understanding the disease: knowledge of symptoms, risks and treatment options.
• Family Education: important that family members understand the risks and support each other.
• School and workplace information: as necessary to adjust the environment and activities.

Regular medical monitoring

• Collaboration with a multidisciplinary team: cardiologist, orthopedist, ophthalmologist, geneticist, pulmonologist.
• Symptom monitoring: pay attention to any changes in health.

Planning and precaution

Pregnancy planning:

• Effects of Marfan syndrome on pregnancy and the fetus.
• Increased risk of aortic dissection during pregnancy.
• Consultations with a specialist in genetics and cardiology.

• Carrying medical information: ID bracelets or cards with information about the diagnosis and emergency contact information.
• Vaccinations: flu and pneumococcal vaccines to reduce the risk of lung complications.

Social and emotional support

• Support groups and organizations: marfan syndrome society in Latvia and international organizations.
• Community Engagement: participating in events and activities that promote awareness and support.

Prevention and genetic counseling

Genetic counseling

• Prenatal diagnosis: it is possible to determine whether the fetus has inherited the mutation by amniocentesis or chorionic villus sampling.
• Preimplantation genetic diagnosis (PGD): As part of the IVF procedure, to select embryos without the mutation.
• Investigation of family members: early diagnosis and treatment can prevent complications and improve quality of life.

Reduction of risk factors

• Healthy lifestyle: regular moderate physical activity, healthy diet, smoking cessation.
• Avoiding caffeine and stimulants: may increase heart rate and blood pressure.

Complications

Without proper treatment, Marfan syndrome can cause serious complications:

Aortic dissection or rupture

• A life-threatening condition which requires immediate medical intervention.
• Symptoms: sudden, severe pain in the chest, back or abdomen, loss of consciousness.

Insufficiency of heart valves

• May cause heart failure, shortness of breath, fatigue.

Loss of vision

• From retinal detachment, glaucoma or cataracts.
• Early diagnosis and treatment can prevent permanent damage.

Pulmonary complications

• Recurrent pneumothorax, lung infections.
• May affect breathing ability and reduce blood oxygen levels.

Neurological problems

• Dural ectasia can cause chronic pain, numbness, weakness.
• Pain management or surgical intervention may be necessary.

Conclusion

Marfan syndrome is a serious genetic condition that can affect many body systems. However, with early diagnosis, regular monitoring and appropriate treatment, many people with Marfan syndrome can live full and active lives. It is important to work with medical professionals, follow instructions and make necessary lifestyle changes.

Additional resources

• Marfan Syndrome Society in Latvia: www.marfans.lv
• Cardiovascular Health Centers: consultations with cardiologists, regular examinations.
• International Marfan Foundation website: www.marfan.org