Genetics of Vascular Function
Vascular function encompasses endothelial integrity, blood flow regulation, coagulation, and microcirculation. Genetic variants in vascular and endothelial genes have been studied in relation to Long COVID microclotting, cardiovascular disease, and autonomic dysfunction.
This page is for educational and informational purposes only. Not a diagnostic tool. Always consult a qualified healthcare provider.
What is Vascular Function?
The vascular system — comprising arteries, veins, capillaries, and the lymphatic network — is responsible for delivering oxygen and nutrients throughout the body. Endothelial cells lining blood vessels play key roles in regulating vascular tone, preventing clot formation, and modulating inflammation. In Long COVID, vascular abnormalities including microclotting, endothelial dysfunction, and impaired microcirculation have been documented and proposed as drivers of multi-system symptoms. Genetic variation in endothelial function, coagulation, and vascular signalling genes may influence individual vascular resilience.
Biological pathways commonly discussed in relation to Vascular Function
Research into Vascular Function and Endothelial 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.
Endothelial Function
Endothelial cells regulate vascular permeability, inflammation, and thrombosis. Variants in NOS3 (eNOS), VCAM1, and ICAM1 may influence endothelial activation and integrity.
Coagulation Fibrinolysis
The coagulation cascade prevents excessive bleeding, while fibrinolysis dissolves clots. Variants in F5, F2, PROC, and PLAT may shift the balance towards increased clotting or impaired clot resolution.
Vascular Tone
Nitric oxide and other vasoactive mediators regulate blood vessel diameter and blood pressure. Variants in NOS3, ACE, and AGTR1 may influence vascular tone and autonomic regulation.
Microcirculation
Microcirculatory dysfunction — impaired blood flow through small vessels — has been documented in Long COVID. Variants affecting red cell deformability, platelet function, or endothelial health may contribute.
Key genes studied in relation to Vascular Function
The following genes have been studied in relation to Vascular Function and Endothelial Health. These genes span the biological pathways most commonly discussed in this area of research.
47 genes total studied in relation to Vascular 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 Vascular Function. Each variant represents a position in the genome where individuals may carry different alleles.
84 variants total across genes studied in relation to Vascular 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 Vascular Function.
This is not a diagnostic service. Genetic variants do not determine whether you have Vascular 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
Vascular Function shares biological pathways and genetic associations with the following related conditions and areas of research.
Frequently asked questions
Why is vascular function relevant to Long COVID?
Vascular abnormalities including microclotting, endothelial dysfunction, and impaired microcirculation have been documented in Long COVID patients. These may contribute to exercise intolerance, fatigue, cognitive symptoms, and multi-organ involvement.
Which genes are studied in relation to vascular function?
Commonly studied genes include NOS3, F5, F2, PROC, PLAT, VCAM1, ICAM1, and ACE. These cover endothelial signalling, coagulation regulation, and vascular tone.
What is endothelial dysfunction?
Endothelial dysfunction occurs when the cells lining blood vessels lose their normal regulatory functions — becoming pro-inflammatory, pro-thrombotic, and less able to regulate vascular tone. It is considered an early marker of cardiovascular risk and has been observed in Long COVID.
Can genetic variants increase clotting risk in Long COVID?
Variants in coagulation genes such as Factor V Leiden (F5) or prothrombin gene mutations (F2) may increase baseline clotting tendency. Whether these specifically worsen Long COVID outcomes is an area of active research — ChronicDNA presents this as educational context only.
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 Vascular Function and connected biological pathways.
Get Your Personalised DNA ReportInformational and educational only · Not a diagnostic tool · GDPR compliant
47 genes · 84 variants analysed in relation to Vascular Function