Genetics of Coagulation and Clotting
Coagulation and fibrinolysis regulate the formation and dissolution of blood clots. Genetic variants in coagulation factors, natural anticoagulants, and fibrinolytic enzymes have been studied in relation to Long COVID microclotting, thrombosis, and cardiovascular risk.
This page is for educational and informational purposes only. Not a diagnostic tool. Always consult a qualified healthcare provider.
What is Coagulation and Clotting?
The coagulation system is a precisely balanced cascade of clotting factors that forms blood clots to prevent bleeding and then dissolves them via fibrinolysis. Disruption of this balance — either towards excessive clotting (thrombophilia) or insufficient clotting (bleeding tendency) — has significant clinical consequences. In Long COVID, abnormal microclots resistant to fibrinolysis have been documented in the bloodstream, potentially obstructing microcirculation and contributing to fatigue, brain fog, and multi-organ symptoms. Genetic variants in coagulation factors, natural anticoagulants (Protein C, Protein S), and fibrinolytic enzymes may modify individual clotting tendencies.
Biological pathways commonly discussed in relation to Coagulation and Clotting
Research into Coagulation, Clotting, and Fibrinolysis 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.
Coagulation Cascade
The coagulation cascade involves sequential activation of factors II, V, VII, VIII, IX, X, XI, and XII. Variants such as Factor V Leiden (F5) or prothrombin G20210A (F2) are among the most studied thrombophilia risk factors.
Fibrinolysis
Fibrinolysis dissolves clots via plasmin activation. Variants in PLAT (tPA), PLG (plasminogen), and PAI-1 (SERPINE1) may influence fibrinolytic capacity and clot persistence.
Natural Anticoagulants
Protein C, Protein S, and Antithrombin III naturally limit coagulation. Variants in PROC, PROS1, and SERPINC1 may impair these protective mechanisms.
Platelet Function
Platelets initiate clot formation upon vessel injury. Variants in GP1BA, ITGA2, ITGB3, and P2RY12 may influence platelet activation thresholds and aggregation.
Key genes studied in relation to Coagulation and Clotting
The following genes have been studied in relation to Coagulation, Clotting, and Fibrinolysis. These genes span the biological pathways most commonly discussed in this area of research.
29 genes total studied in relation to Coagulation and Clotting across the ChronicDNA dataset.
Genetic variants commonly discussed
The following genetic variants (SNPs) are found in genes that have been studied in relation to Coagulation and Clotting. Each variant represents a position in the genome where individuals may carry different alleles.
91 variants total across genes studied in relation to Coagulation and Clotting.
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 Coagulation and Clotting.
This is not a diagnostic service. Genetic variants do not determine whether you have Coagulation and Clotting, 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
Coagulation and Clotting shares biological pathways and genetic associations with the following related conditions and areas of research.
Frequently asked questions
What are microclots in Long COVID?
Microclots are small, amyloid-containing fibrin clots that have been detected in the bloodstream of Long COVID patients. They are thought to resist normal fibrinolysis and may impair microcirculation, contributing to fatigue, brain fog, and exercise intolerance.
Which coagulation genes are most studied in Long COVID research?
Studied genes include F5 (Factor V Leiden), F2 (prothrombin), PROC, PROS1, PLAT, SERPINE1 (PAI-1), VWF, and ADAMTS13. These cover the clotting cascade, fibrinolysis, and platelet activation.
What is Factor V Leiden?
Factor V Leiden is a common genetic variant in the F5 gene (rs6025) that makes the coagulation Factor V resistant to inactivation, increasing clotting tendency. It is one of the most common inherited thrombophilia variants in European populations.
Can genetic variants affect Long COVID clotting risk?
Thrombophilia variants may modify clotting risk in the context of SARS-CoV-2 infection, which already activates coagulation. This is an area of active research — ChronicDNA provides educational context, not clinical risk assessment.
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 Coagulation and Clotting and connected biological pathways.
Get Your Personalised DNA ReportInformational and educational only · Not a diagnostic tool · GDPR compliant
29 genes · 91 variants analysed in relation to Coagulation and Clotting