Should children and other relatives be tested if a family member has Marfan synd

[Anonymous]

Should children and other relatives be tested if a family member has Marfan syndrome?

[Genetic Counselor]

It is often helpful for close relatives to discuss assessment with a clinical geneticist or genetic counsellor. Marfan syndrome can be inherited, and some people have subtle features or feel well despite having changes that need monitoring. A family member’s diagnosis can therefore be a reason to check whether parents, siblings, or children may also be affected.

If a disease-causing genetic variant has been identified in the family, relatives can be offered a targeted test for that specific variant. This is different from repeating a broad genetic panel: it checks whether the known family change is present. If a relative tests positive, their care team can arrange appropriate heart imaging, eye examinations, and other follow-up. A negative targeted result may mean that the person did not inherit that specific family variant, but the result should still be interpreted by their clinician.

Children may be considered for testing because Marfan syndrome can affect the heart, eyes, and skeleton during childhood. Finding the condition early can help doctors begin monitoring and care when needed. A genetics professional can help the family decide who should be tested, when to do it, and how to talk with children about the result.

[Author]

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