Transthyretin Amyloid Cardiomyopathy: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Transthyretin Amyloid Cardiomyopathy?
Most people are cared for by a cardiologist, a heart specialist. Some centers have teams that include genetic counselors. An ophthalmologist may be involved because amyloid can affect the eyes and some treatments require eye exams. A primary care doctor often coordinates the first tests and referrals.
What it is
Transthyretin amyloid cardiomyopathy is a heart disease caused by a buildup of abnormal proteins in the heart muscle. The protein, transthyretin, is made by the liver and carries hormones in the blood. In this disease, it changes shape and clumps into strands called amyloid. These strands stiffen the heart, which can lead to heart failure.
Symptoms
Symptoms often start slowly and can look like other heart problems. Many people feel short of breath during activity or when lying down, or notice swelling in the legs, ankles, or belly. Some feel very tired or dizzy, or have a racing heartbeat. Because these signs overlap with more common conditions, the disease is often missed at first.
Causes and who gets it
There are two main forms. One is hereditary, passed down through families; people who inherit a changed gene can develop the disease, often in midlife or later. The other, called wild-type, is not inherited and mostly affects men over about 60 to 70. In both forms, protein builds up in the heart over years.
How doctors diagnose it
Doctors start with a physical exam, family history, and tests such as an electrocardiogram and an echocardiogram. A heart MRI and a special nuclear scan can show amyloid buildup. Blood and urine tests, and sometimes a biopsy, confirm the diagnosis. Genetic testing may be offered.
Treatment
Treatment aims to slow the protein buildup and ease symptoms. Medicines called TTR stabilizers can help keep the protein from clumping. Doctors may also prescribe drugs that reduce fluid buildup and control heart rate. In rare, severe cases, a heart transplant may be considered.
When to see a doctor
See a doctor for ongoing shortness of breath, swelling, fainting, or a racing or irregular heartbeat. Get medical help quickly if breathing trouble is sudden or severe. Anyone with a family history of amyloidosis should mention it, since early testing can lead to earlier treatment.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance; a concierge doctor usually charges more and often works alongside insurance. Either can order initial tests and adjust medicines, and both usually refer patients to a cardiologist for specialized care while continuing day-to-day treatment.
Common questions
Is transthyretin amyloid cardiomyopathy the same as regular heart failure?
No. It is one specific cause of heart failure. The heart becomes stiff from protein buildup rather than weak from blocked arteries, so treatment can be different.
Is it always inherited?
No. The hereditary form runs in families, but the wild-type form develops in older age without any family history. Genetic testing can help tell the two apart.
Can it be cured?
There is no simple cure for most people. Medicines can slow the disease and ease symptoms, but results vary.
Should family members get tested?
In the hereditary form, close relatives may want to ask about genetic counseling before deciding.
Sources
- MedlinePlus Genetics - Transthyretin amyloidosis
- American Heart Association - Transthyretin Amyloid Cardiomyopathy (ATTR-CM)
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
