SLC6A20 Gene

Solute Carrier Family 6 Member 20 (SLC6A20) is a gene involved in ACE2 co-expression / amino acid transport that has been studied in relation to immune function, metabolism, and chronic illness. Variants in SLC6A20 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 SLC6A20 gene?

SLC6A20 encodes solute carrier family 6 member 20, a protein involved in ACE2 co-expression / amino acid transport. It belongs to the Immune Signaling category and is part of the Viral Defense & Interferon Response biological cluster. SLC6A20 encodes a proline transporter that is co-expressed with ACE2 in the lung and gut, and resides within the COVID-19 GWAS risk locus at 3p21.31.

Biological role and pathway

SLC6A20 is involved in the ACE2 co-expression / amino acid transport pathway, which plays a central role in regulating physiological processes relevant to immune defence, cellular energy, and systemic homeostasis. Genes within the Viral Defense & Interferon Response 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.

SLC6A20 and Long COVID / ME-CFS research

SLC6A20 variants in the major COVID-19 risk locus at 3p21.31 may affect ACE2 pathway function and susceptibility to severe COVID-19 and Long COVID.

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 SLC6A20 gene have been studied in relation to immune signaling and chronic illness. Each variant represents a single nucleotide position where individuals may carry different alleles.

Conditions studied in relation to SLC6A20

Research into SLC6A20 variants has explored associations with the following conditions. These are areas of scientific investigation and do not imply that SLC6A20 causes or treats any condition.

Long CovidCovid SeverityAce2 Pathway

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 SLC6A20 and related genes in the viral defense & interferon response 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 Viral Defense & Interferon Response pathway

SLC6A20 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 SLC6A20 gene and what does it do?

SLC6A20 (Solute Carrier Family 6 Member 20) is involved in ACE2 co-expression / amino acid transport. SLC6A20 encodes a proline transporter that is co-expressed with ACE2 in the lung and gut, and resides within the COVID-19 GWAS risk locus at 3p21.31.

How may SLC6A20 gene variants relate to Long COVID or ME/CFS?

SLC6A20 variants in the major COVID-19 risk locus at 3p21.31 may affect ACE2 pathway function and susceptibility to severe COVID-19 and Long COVID.

Can a DNA test reveal information about my SLC6A20 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 SLC6A20 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 SLC6A20. This is not an exhaustive literature review.

  • [1]PMID: 32558485
  • [2]Nature Genetics
  • [3]NEJM