July Recap: Genetics and Aortic Disease

Over the past several weeks, Aortic Hope has explored how our genes can play a role in aortic disease. Understanding these connections can help patients and families recognize risks earlier, receive appropriate monitoring, and take steps to protect their health.

Why Do Genes Matter in Aortic Disease?

Our bodies are built with a complex support system called connective tissue. Connective tissue helps give strength and structure to many parts of the body, including the heart, blood vessels, skin, joints, and bones.

The aorta depends on strong, healthy tissue to handle the pressure of blood flowing through it every second of every day. When certain genes affect how connective tissue or blood vessels are built, the aorta may become more vulnerable to stretching, enlargement, aneurysms, or dissection.

Some genetic conditions connected to aortic disease that we reviewed this month include include:

• Marfan syndrome

• Ehlers-Danlos syndrome

• Loeys-Dietz syndrome

• Turner syndrome

• Bicuspid aortic valve-associated aortopathy

Although each condition is different, they all remind us why awareness and early care matter.

Marfan Syndrome

Marfan syndrome is one of the best-known inherited conditions associated with aortic disease. It is caused by changes in a gene called FBN1, which affects the body’s connective tissue. Marfan's can affect many body systems, including the eyes, bones, joints, and heart. The biggest concern for many people with Marfan syndrome is the aorta. Over time, the aortic wall may become weaker and enlarge, increasing the risk of an aortic dissection.

Some people with Marfan syndrome may have features such as:

• Being tall with long arms, legs, fingers, or toes

• Flexible joints

• Spine or chest differences

• Eye problems

• Enlargement of the aorta

However, Marfan syndrome does not look the same in everyone. Some people may have only a few signs, which is why genetic testing and regular heart imaging can be so important. With proper monitoring, medications when needed, and expert care, many people with Marfan syndrome live long, active, and fulfilling lives.

Ehlers-Danlos Syndrome

Ehlers-Danlos syndrome (EDS) is a group of conditions that affect connective tissue. Many people know EDS because of flexible joints or stretchy skin, but certain forms can also affect the blood vessels.

The type most closely linked with serious vascular concerns is vascular Ehlers-Danlos syndrome (vEDS).In vEDS, changes in the COL3A1 gene can make blood vessels more fragile. This can increase the risk of complications such as aneurysms, dissections, or tears in blood vessels.

Because these complications can happen at younger ages, recognizing the condition early is important. Genetic testing, family history, and regular monitoring can help patients and families better understand their risks and create a plan for care.

Loeys-Dietz Syndrome

Loeys-Dietz syndrome (LDS) is another inherited condition that can affect the aorta. People with LDS may have changes in genes that help control how connective tissue develops and functions. These changes can increase the risk of aortic enlargement and dissection.

Some signs that may lead doctors to consider LDS include:

• A family history of aneurysm or dissection

• Aortic enlargement at a younger age

• Certain differences in the bones, joints, or facial features

• Abnormalities in other blood vessels

One of the most valuable parts of receiving a diagnosis is that it allows families to take action. Genetic testing can help identify relatives who may also need screening and monitoring.

Bicuspid Aortic Valve

A bicuspid aortic valve (BAV) is one of the most common heart conditions people are born with. Instead of having three valve leaflets, the aortic valve develops with two. For some people, the concern goes beyond the valve itself. The aorta may also be affected, a condition known as bicuspid aortopathy. Over time, changes in the aortic wall and the way blood flows through the valve can contribute to enlargement of the aorta.

Because these changes often happen silently, regular imaging is important. Many people with BAV remain healthy for years because their condition is identified and monitored before complications develop.

Turner Syndrome

Turner syndrome is a genetic condition caused by changes involving one of the X chromosomes. While Turner syndrome can affect many areas of health, it is especially important to monitor the heart and aorta.

People with Turner syndrome have a higher chance of having a BAV, narrowing or enlargement of the aorta (coarctation), and increased risk of dissection. Regular heart imaging and follow-up with healthcare providers are important parts of lifelong care.

Knowledge Is Hope

Learning that you or a loved one has a genetic condition can feel overwhelming. But today, we have more tools than ever before to help people live with these conditions.

Genetic testing, advanced imaging, medications, surgery, and specialized care teams have changed the future for many patients with aortic disease. When one person is diagnosed with a genetic aortic condition, family members may benefit from genetic counseling, testing, or heart imaging.

Finding risk early can give families the opportunity to monitor, prepare, and prevent emergencies.

Best wishes,

Keyana Zahiri