Genetics of Cardiovascular Function

Cardiovascular involvement is documented in Long COVID, including cardiac arrhythmias, myocarditis, autonomic dysfunction, and elevated clotting risk. Genetic variants in cardiac, vascular, and coagulation pathways may influence individual cardiovascular vulnerability.

This page is for educational and informational purposes only. Not a diagnostic tool. Always consult a qualified healthcare provider.

What is Cardiovascular Function?

The cardiovascular system is frequently affected in Long COVID, with reported manifestations including tachycardia, palpitations, chest pain, reduced exercise tolerance, and elevated risk of thromboembolic events. Genetic factors influencing cardiac rhythm, vascular tone, coagulation balance, and inflammatory responses may modify individual cardiovascular risk. Long COVID cardiovascular complications are thought to arise from a combination of direct viral cardiac injury, immune-mediated inflammation, autonomic dysregulation, and hypercoagulability — all of which have genetic modifiers.

Biological pathways commonly discussed in relation to Cardiovascular Function

Research into Cardiovascular Function and Heart Health has highlighted several biological pathways that may be relevant. Genetic variants within these pathways may influence individual susceptibility, symptom severity, or the trajectory of the condition.

Cardiac Rhythm

Ion channels in cardiac myocytes regulate electrical conduction and heart rhythm. Variants in SCN5A, KCNH2, and related genes may influence arrhythmia susceptibility, which has been reported in Long COVID.

Vascular Tone

ACE, NOS3, and adrenergic receptor genes influence blood pressure regulation and vascular tone. Variants may contribute to hypertension, orthostatic intolerance, and exercise-induced symptoms.

Coagulation

Hypercoagulability and microclotting have been documented in Long COVID. Variants in coagulation factors (F5, F2, PROC) may modify thrombotic risk following COVID-19 infection.

Cardiac Inflammation

Myocarditis — inflammation of the heart muscle — has been reported following COVID-19. Genetic variants affecting immune regulation and cardiac inflammatory responses may influence susceptibility.

Key genes studied in relation to Cardiovascular Function

The following genes have been studied in relation to Cardiovascular Function and Heart Health. These genes span the biological pathways most commonly discussed in this area of research.

CRP

CRP encodes C-reactive protein, a sensitive biomarker of systemic inflammation produced primarily by the liver in response to IL6.

ACE

ACE encodes angiotensin-converting enzyme, which converts angiotensin I to angiotensin II and degrades bradykinin, regulating blood pressure.

NOS3

NOS3 encodes endothelial nitric oxide synthase, which produces NO to regulate vascular tone, platelet aggregation, and endothelial function.

ACE2

ACE2 encodes the primary entry receptor for SARS-CoV-2 and is a key regulator of the renin-angiotensin system in the cardiovascular and pulmonary systems.

AGTR1

AGTR1 encodes the angiotensin II receptor type 1, the primary mediator of angiotensin II's vasoconstrictive and pro-inflammatory effects.

CYP2C19

CYP2C19 activates clopidogrel and metabolizes proton pump inhibitors, antidepressants, and antifungals. Poor metabolizers have reduced clopidogrel activation (elevated cardiovascular risk) while ultrarapid metabolizers have increased drug clearance.

P2RY12

P2Y12 is an ADP-activated Gi-coupled receptor on platelets that amplifies platelet aggregation and is the target of clopidogrel, prasugrel, and ticagrelor antiplatelet therapy. It is also expressed on microglia.

BDKRB2

BDKRB2 is the constitutively expressed high-affinity receptor for bradykinin mediating vasodilation, vascular permeability, pain sensitization, and inflammation. ACE2 and ACE are key regulators of bradykinin degradation.

36 genes total studied in relation to Cardiovascular Function across the ChronicDNA dataset.

Genetic variants commonly discussed

The following genetic variants (SNPs) are found in genes that have been studied in relation to Cardiovascular Function. Each variant represents a position in the genome where individuals may carry different alleles.

rs1205CRP rs1048101ADRA1A rs4343ACE rs1799983NOS3 rs4244285CYP2C19 rs2285666ACE2

101 variants total across genes studied in relation to Cardiovascular Function.

How personal DNA data may provide educational insights

Consumer DNA files from 23andMe, AncestryDNA, and MyHeritage contain raw SNP data. When you upload your file to ChronicDNA, the analysis engine checks your genotype against a curated panel of 80+ genes selected for their relevance to Long COVID, ME/CFS, and connected biological pathways - some of which may relate to areas such as Cardiovascular Function.

This is not a diagnostic service. Genetic variants do not determine whether you have Cardiovascular Function, nor do they predict your clinical outcomes. The report is educational - it explains which variants you carry, what the research says about them, and how they fit into the biological pathways most relevant to chronic illness. All results should be discussed with a qualified healthcare provider.

Related conditions and pathways

Cardiovascular Function shares biological pathways and genetic associations with the following related conditions and areas of research.

Vascular Coagulation Pots Long Covid Cardiac Arrhythmia

Frequently asked questions

How does Long COVID affect the cardiovascular system?

Long COVID cardiovascular manifestations include tachycardia, palpitations, chest pain, reduced exercise tolerance, and elevated thrombotic risk. Proposed mechanisms include direct viral cardiac injury, immune-mediated myocarditis, autonomic dysregulation, and microclotting.

Which cardiovascular genes are studied in relation to Long COVID?

Studied genes include NOS3, ACE, F5, F2, PROC, ADRB1, and coagulation pathway genes. These cover vascular tone, endothelial function, coagulation balance, and autonomic cardiovascular regulation.

Can genetic variants increase cardiovascular risk in Long COVID?

Variants in coagulation genes (e.g. Factor V Leiden) or endothelial function genes may modify cardiovascular risk in the context of Long COVID. This is an area of active research — ChronicDNA presents these associations as educational context only.

What is POTS and how does it relate to cardiovascular genetics?

POTS (Postural Orthostatic Tachycardia Syndrome) involves abnormal heart rate increases upon standing, driven by autonomic nervous system dysfunction. Genetic variants in adrenergic receptors, norepinephrine transporter (SLC6A2), and NET-related genes may contribute to POTS susceptibility.

Explore DNA insights

If you already have DNA data from 23andMe, AncestryDNA, or MyHeritage, upload your raw file to ChronicDNA and receive a personalised educational report covering genes studied in relation to Cardiovascular Function and connected biological pathways.

Get Your Personalised DNA Report

Informational and educational only · Not a diagnostic tool · GDPR compliant

36 genes · 101 variants analysed in relation to Cardiovascular Function