TG Gene

Thyroglobulin (TG) is a gene involved in thyroid hormone storage and synthesis that has been studied in relation to immune function, metabolism, and chronic illness. Variants in TG may influence how the body responds to infection, inflammation, and long-term recovery.

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

What is the TG gene?

TG encodes thyroglobulin, a protein involved in thyroid hormone storage and synthesis. It belongs to the Metabolic category and is part of the Metabolic Regulation biological cluster. TG encodes thyroglobulin, the large glycoprotein serving as the scaffold for thyroid hormone synthesis and storage in thyroid follicles.

Biological role and pathway

TG is involved in the thyroid hormone storage and synthesis pathway, which plays a central role in regulating physiological processes relevant to immune defence, cellular energy, and systemic homeostasis. Genes within the Metabolic Regulation 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 in these systems — particularly under conditions of physiological stress such as viral infection or prolonged illness.

TG and Long COVID / ME-CFS research

Thyroglobulin is the main thyroid autoantigen; anti-Tg antibodies occur in COVID-19 and may reflect post-infectious thyroid autoimmunity contributing to Long COVID thyroid dysfunction.

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

Known genetic variants

The following variants (SNPs) in the TG gene have been studied in relation to metabolic and chronic illness. Each variant represents a single nucleotide position where individuals may carry different alleles.

Conditions studied in relation to TG

Research into TG variants has explored associations with the following conditions. These are areas of scientific investigation and do not imply that TG causes or treats any condition.

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 TG and related genes in the metabolic regulation pathway.

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.

Related genes in the Metabolic Regulation pathway

TG does not act in isolation. The following genes are functionally related and may be analysed together for a more complete picture of your genetic predispositions.

Frequently asked questions

What is the TG gene and what does it do?

TG (Thyroglobulin) is involved in thyroid hormone storage and synthesis. TG encodes thyroglobulin, the large glycoprotein serving as the scaffold for thyroid hormone synthesis and storage in thyroid follicles.

How may TG gene variants relate to Long COVID or ME/CFS?

Thyroglobulin is the main thyroid autoantigen; anti-Tg antibodies occur in COVID-19 and may reflect post-infectious thyroid autoimmunity contributing to Long COVID thyroid dysfunction.

Can a DNA test reveal information about my TG gene?

Consumer DNA data from 23andMe, AncestryDNA, and MyHeritage includes SNP variants for many genes. ChronicDNA analyses your raw DNA file and reports on variants that have been studied in relation to chronic illness, immune function, and metabolism. This is not a diagnostic service — results are informational and educational only.

Explore your TG genetic insights

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

Get Your Personalised DNA Report

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

References

The following publications were used in compiling the research context for TG. This is not an exhaustive literature review.

  • [1]PMID: 33664986
  • [2]Nature Genetics
  • [3]JCEM