rs639225

Variant in the TEK gene (TEK Receptor Tyrosine Kinase (TIE2))

rs639225 is a single nucleotide polymorphism (SNP) in the TEK gene, involved in angiopoietin / vascular stability signaling. Variants at this position have been studied in relation to immune function, metabolism, and chronic illness.

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

What is the rs639225 variant?

rs639225 is a SNP (single nucleotide polymorphism) in the TEK (TEK Receptor Tyrosine Kinase (TIE2)) gene. It belongs to the Vascular category and is part of the Coagulation & Microcirculation biological cluster. TEK encodes TIE2, the receptor for angiopoietins 1 and 2, which regulates vascular permeability and endothelial stability.

Biological role and pathway

This variant sits within the TEK gene, which is involved in the angiopoietin / vascular stability signaling pathway. Genes within the Coagulation & Microcirculation cluster work together to maintain balanced function across interconnected biological systems.

Variants in genes within this pathway may influence an individual's predisposition to altered function — particularly under conditions of physiological stress such as viral infection or prolonged illness.

rs639225 and Long COVID / ME-CFS research

TEK/TIE2 signaling maintains vascular barrier integrity; dysregulation of the angiopoietin-TIE2 axis is documented in COVID-19 vascular injury and may persist in Long COVID.

This information is based on published research and does not constitute medical advice. See references below.

Parent gene: TEK

rs639225 is one of 1 known variant in the TEK gene. To understand the full biological context of this variant, explore the parent gene page.

View TEK gene page →

Conditions studied in relation to rs639225

Research into TEK variants including rs639225 has explored associations with the following conditions. These are areas of scientific investigation and do not imply causation.

Genetic insights from DNA data

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 include TEK and the rs639225 variant.

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. Results are presented in plain English with appropriate scientific context, no medical jargon, no scare tactics. All results should be discussed with a qualified healthcare provider.

Frequently asked questions

What is the rs639225 variant in the TEK gene?

rs639225 is a single nucleotide polymorphism (SNP) located in the TEK (TEK Receptor Tyrosine Kinase (TIE2)) gene, which is involved in angiopoietin / vascular stability signaling. TEK encodes TIE2, the receptor for angiopoietins 1 and 2, which regulates vascular permeability and endothelial stability.

How may the rs639225 variant relate to Long COVID or ME/CFS?

TEK/TIE2 signaling maintains vascular barrier integrity; dysregulation of the angiopoietin-TIE2 axis is documented in COVID-19 vascular injury and may persist in Long COVID.

Can a consumer DNA test detect the rs639225 variant?

Many consumer DNA tests such as 23andMe, AncestryDNA, and MyHeritage genotype common SNPs. ChronicDNA analyses your raw DNA file and reports on variants studied in relation to chronic illness, immune function, and metabolism. This is not a diagnostic service — results are informational and educational only.

Find out if you carry the rs639225 variant

Upload your DNA data from 23andMe, AncestryDNA, or MyHeritage and receive a personalised report covering >80 genes relevant to Long COVID and ME/CFS.

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

References

The following publications were used in compiling the research context for TEK and its variants. This is not an exhaustive literature review.

  • [1]PMID: 32966261
  • [2]Nature Medicine
  • [3]Journal of Clinical Investigation