VNN1 rs3798793: What Your Genotype Means
The rs3798793 single nucleotide polymorphism is an intronic variant located within the vascular non-inflammatory molecule 1 (VNN1) gene on chromosome 6. Research has identified it as a metabolic quantitative trait locus (mQTL) linked to circulating levels of linoleoyl ethanolamide, an endocannabinoid-related lipid messenger. While initial studies highlight associations with metabolic profiles in athletic cohorts, overall evidence connecting this variant directly to physical endurance remains preliminary.
What each genotype means
Typical endocannabinoid metabolite baseline
You carry two copies of the C allele for this VNN1 variant. In metabolomic research involving athletic cohorts, this genotype is associated with baseline circulating levels of linoleoyl ethanolamide, an endocannabinoid-related metabolite. Current evidence connecting this variant to distinct endurance adaptations is limited and primarily statistical rather than clinical.
Carried by approximately 40% to 45% of individuals globally, making it common across most continental populations.
Intermediate metabolite response
You carry one copy of the T minor allele and one copy of the C allele. Athletic metabolomics studies have observed an incremental, dosage-dependent change in circulating linoleoyl ethanolamide levels in heterozygous individuals. However, evidence directly demonstrating an impact on personal fitness capacity or sports outcomes remains preliminary.
Carried by roughly 40% to 45% of individuals across diverse global ancestries.
Altered linoleoyl ethanolamide profile
You carry two copies of the T minor allele in the VNN1 locus. Research in elite athletic cohorts has linked this genotype to higher effect-size associations with linoleoyl ethanolamide levels, an endocannabinoid lipid that responds to physical exertion. Because this association comes from limited observational metabolomic studies, it should not be taken as a diagnostic marker of athletic endurance.
Carried by approximately 10% to 15% of individuals in global populations.
Genomic Context and the VNN1 Gene
The rs3798793 polymorphism resides within an intron of the VNN1 gene, located on chromosome 6q23.2. VNN1 encodes vanin 1, a cell-surface pantetheinase enzyme that hydrolyzes pantetheine into pantothenic acid (vitamin B5) and cysteamine. This enzymatic step is essential for coenzyme A metabolism, cellular redox regulation, and the modulation of tissue inflammation. Because vanin 1 helps regulate the metabolic flux of fatty acids and cellular oxidative balance, genomic variation within the VNN1 locus has drawn interest for its potential downstream effects on systemic lipid processing and energy production.
Research on Metabolites and Endurance
Scientific interest in rs3798793 increased following a high-resolution metabolomics genome-wide association study (mGWAS) in elite athletic cohorts. Published research revealed that rs3798793 serves as a significant sentinel metabolic quantitative trait locus (mQTL) for serum levels of linoleoyl ethanolamide, an endocannabinoid-related lipid mediator involved in inflammation and energy signaling. The locus explained approximately 10.8% of the variance in linoleoyl ethanolamide levels within the studied cohort. While this metabolic fingerprint was investigated alongside endurance sports traits, the variant has not been proven to directly determine athletic success.
Strength and Limitations of the Evidence
The scientific evidence linking rs3798793 to specific functional fitness outcomes is currently categorized as limited. While the statistical correlation between the variant and linoleoyl ethanolamide levels reached rigorous genome-wide significance in athletic profiling studies, elite athlete sample sizes remain modest compared to large epidemiological biobanks. Furthermore, physical endurance is a complex, polygenic trait shaped by hundreds of genetic variants alongside training, sleep, and nutrition. An observed association with an intermediate lipid metabolite does not automatically translate into a definitive performance advantage or endurance capacity in the general population.
Population Distribution and Frequency
The minor allele for rs3798793 is widely distributed across global human populations, presenting an overall minor allele frequency of roughly 0.35. Because the frequency of genetic variants can vary among continental ancestries, individual genotype distributions naturally differ across global demographic groups. The presence of the minor allele in more than a third of tested alleles worldwide indicates that it is a common normal human variation rather than a rare pathogenic mutation or disease-causing genetic anomaly.
Practical Takeaways and Limitations
Carrying specific alleles at rs3798793 offers insight into subtle differences in lipid metabolite levels, but it cannot predict an individual's athletic capability or fitness limits. Genetic results from an exploratory marker like rs3798793 should never be used to make diagnostic health decisions, guide medical interventions, or dictate athletic training programs. Real-world cardiorespiratory fitness and endurance adaptations depend primarily on consistent physical conditioning, aerobic training volume, balanced nutrition, and lifestyle habits rather than single metabolic polymorphisms.
How common is this variant?
The minor allele frequency for rs3798793 is approximately 0.35 across global populations, meaning both heterozygous and homozygous genotypes are commonly observed across diverse ancestral groups.
Frequently asked questions
Does rs3798793 determine my endurance or aerobic capacity?
No. While rs3798793 is associated with differences in linoleoyl ethanolamide levels in metabolomic studies, aerobic endurance is heavily influenced by regular exercise, nutrition, and hundreds of independent genetic factors.
What is linoleoyl ethanolamide?
Linoleoyl ethanolamide is a naturally occurring lipid metabolite related to the endocannabinoid system. It plays roles in lipid metabolism, signaling pathways, and the modulation of inflammation in various tissues.
Is the rs3798793 variant linked to any genetic disease?
No, rs3798793 is an intronic polymorphism representing normal human variation. It is not classified as a disease-causing or pathogenic variant in clinical databases such as ClinVar.
Should I alter my diet or training routine based on my genotype?
No. Because scientific evidence linking this specific SNP to functional training outcomes is limited, you should not alter your workout regimens or dietary habits based on rs3798793 results.
Sources & further reading
Educational information only, last refreshed 9/13/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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