marfan syndrome causes what heart condition
Marfan syndrome also can damage the heart valves. Marfan syndrome affects approximately 200,000 people in the United States. Causes of Marfan syndrome. Marfan syndrome is caused by a genetic mutation. The disorder is usually inherited, but spontaneous cases occur. Having a parent with Marfan syndrome is the greatest risk factor. Symptoms of Marfan syndrome. Many patients with Marfan syndrome have no symptoms.