What it is
A polygenic risk score (PRS) adds up the small effects of many common DNA variants to estimate a person's inherited tendency toward a condition, such as coronary artery disease. It is different from single-gene testing, which looks for one specific disease-causing variant. A PRS shows statistical risk, not a diagnosis, and it is still a maturing clinical tool.
Preventive cardiology often uses other tools alongside it. A coronary artery calcium (CAC) score uses a specialized CT scan to look for calcium in the heart's arteries. Advanced lipid testing may look beyond standard cholesterol numbers, and inflammation markers may add further context in bloodwork.
Genetic tests show risk or carrier status. They do not diagnose heart disease on their own and must be interpreted alongside personal and family history, a physical exam, imaging and bloodwork by a qualified cardiologist, electrophysiologist or genetic counselor. A negative result does not rule out risk, and a variant of uncertain significance is not a diagnosis.
How it’s traditionally been approached
Heart risk has traditionally been assessed with family history, blood pressure, standard cholesterol panels, blood sugar, smoking status, age and lifestyle. These factors are often combined in risk calculators that clinicians use to guide conversations about prevention.
Imaging such as calcium scoring and additional blood markers have been added by many clinicians when the picture is unclear, for example when someone has a strong family history but no single known gene cause. Approaches and preferences differ between practices.
Polygenic scores are a newer addition. Some clinicians find them useful as one more input, while others consider them an emerging tool whose role is still being worked out. Both views are part of the current conversation, and reasonable clinicians can differ.
How the right cardiologist may help
The right cardiologist may help you sort out which tools, if any, make sense for your situation. A first visit generally involves reviewing your personal health history, your family's heart history, your current medications and your concerns. The clinician may do an exam and discuss whether further testing could be informative.
If genetic testing is discussed, a genetic counselor can explain what a test can and cannot tell you before you decide, and help interpret results afterward. If a disease-causing variant is found, cascade (family) testing may be offered to relatives. Genetic counselor licensing varies by state.
Questions you might bring: Is a polygenic risk score appropriate for me, and how would results change anything? How would you interpret it alongside calcium scoring and bloodwork? Is the test regulated or considered established? Will my insurer cover it? Also ask about insurance before testing: GINA protects against genetic discrimination in US health insurance and employment, but does not cover life, disability or long-term-care insurance.
The whole-person view
Body, mind and stress affect each other. Worry about family heart history or a risk number can raise stress, and ongoing stress can in turn affect sleep, habits and how the body feels. Seeing risk information as one piece of a bigger picture can make it easier to take in.
Some people find body-based support helpful, such as the approaches offered through Somatic Experiences, while others prefer talk therapy through Therapists.plus. Neither replaces cardiology care, and both can sit alongside it as part of looking after the whole person.
Somatic Experiences: nervous system regulation →Somatic Experiences: embodiment and movement →Therapists.plus: anxiety panic and ocd →Therapists.plus: mind body connection →
Keep in mind
- Polygenic risk scores estimate statistical risk, are not a diagnosis, and are still a maturing clinical tool; no test or procedure can promise to prevent a heart attack or sudden cardiac death.
- Coverage for genetic testing, imaging and cardiac procedures varies by insurer, state and diagnosis, so confirm with your insurer and provider.
- Licensed professionals should guide your care, and only a licensed clinician can decide what is appropriate after an evaluation.
- For emergencies such as chest pain or fainting, call 911; in a crisis, call or text 988.
Polygenic risk scores estimate statistical risk across many genes — they are not a diagnosis and are still a maturing clinical tool.
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Frequently asked questions
What is genetic heart testing?
Genetic heart testing analyzes DNA to look for variants linked to heart conditions or to estimate inherited risk. It shows risk or carrier status and does not diagnose heart disease by itself. Results need interpretation by a qualified cardiologist or genetic counselor alongside history, exam, imaging and bloodwork.
What is a polygenic risk score for heart disease?
A polygenic risk score combines the small effects of many common genetic variants into one estimate of inherited risk. It is statistical, not a diagnosis. It is still a maturing clinical tool, so ask your provider how, or whether, it fits your situation.
Can a negative genetic heart test rule out heart disease?
No, a negative result does not rule out risk. Heart disease can be influenced by genes not tested, by family history, and by many non-genetic factors. A variant of uncertain significance is also not a diagnosis and may be reclassified over time.
What is a coronary artery calcium score?
A coronary artery calcium score comes from a specialized CT scan that looks for calcium in the walls of the heart's arteries. Clinicians sometimes use it as one piece of a prevention picture. Whether it is appropriate for you is a decision for your clinician.
Does GINA protect me if I get genetic heart testing?
GINA protects against genetic discrimination in US health insurance and employment. It does not cover life, disability or long-term-care insurance, so ask about those before testing. A genetic counselor can help you think through this.
Should I see a genetic counselor before genetic heart testing?
Genetic counseling is generally recommended both before and after testing. A counselor can explain what a test can and cannot show and help interpret results. If a disease-causing variant is found, they can also help with cascade testing for relatives.
Educational resource. CardioGenes shares general information and connects people with independent cardiologists. It is not medical advice, diagnosis or treatment. Talk with a licensed professional about your health.