NR5A2 rs9363918: Longevity and Metabolic Health Genetics
rs9363918 is a common single nucleotide polymorphism located in the NR5A2 gene locus. Genome-wide association studies evaluate this locus for subtle frequency differences between long-lived cohorts and general population controls. Although research links the surrounding gene to critical pathways in lipid and glucose homeostasis, rs9363918 carries a moderate, statistical association rather than a direct causative impact on lifespan.
What each genotype means
Typical lifespan and metabolic baseline
Carrying two copies of the A allele represents the non-enriched baseline genotype at this locus. Research in longevity cohorts indicates this genotype does not carry the statistical healthspan enrichment observed with the alternative allele. Overall lifespan and metabolic health remain predominantly shaped by comprehensive lifestyle factors and broader polygenic traits.
Found in approximately 34% of individuals of European ancestry and roughly 45% of individuals of South Asian ancestry.
Intermediate longevity association
You carry one copy of the G allele in the NR5A2 gene locus, which has been evaluated in cohorts studying metabolic health and exceptional longevity. Population studies observe modest shifts in allele frequency among individuals reaching extreme age, although its individual effect size remains limited and context-dependent. This genetic variation represents a subtle statistical factor rather than a deterministic predictor of healthspan.
Carried by approximately 49% of individuals of European ancestry and about 44% of individuals of South Asian ancestry.
Elevated longevity-associated allele frequency
Carrying two copies of the G allele is associated with the higher-frequency representation observed in cohorts evaluated for extended healthspan and metabolic function. While studies highlight statistical enrichment of this genotype in aged cohorts, longevity is multifactorial and strongly guided by cardiovascular fitness, diet, and overall genetic background. This result reflects modest statistical correlation rather than a guarantee of health outcomes.
Observed in roughly 17% to 18% of individuals of European descent and about 11% of individuals of South Asian ancestry.
Genomic Location and the NR5A2 Gene
The single nucleotide polymorphism rs9363918 is mapped to the genomic locus harboring the nuclear receptor subfamily 5 group A member 2 (NR5A2) gene, located on chromosome 1. Also known as liver receptor homolog-1 (LRH-1), NR5A2 encodes an orphan nuclear receptor that acts as a transcription factor, binding specific DNA response elements to regulate gene expression in the liver, pancreas, and intestine. It plays essential roles in cholesterol homeostasis, bile acid synthesis, steroidogenesis, and glucose metabolism. Variants occurring within or near the NR5A2 transcription unit, such as rs9363918, are frequently analyzed to investigate whether non-coding regulatory variations influence downstream expression patterns or tissue-specific transcription networks involved in lifelong metabolic regulation.
Association with Longevity and Metabolic Health
Longevity is a complex multifactorial phenotype shaped by hundreds of genetic loci alongside lifestyle and environmental factors. In aging research, cohorts of individuals reaching extreme chronological ages (such as nonagenarians and centenarians) are compared to younger controls to detect alleles that might support sustained vitality. Statistical analyses have highlighted the NR5A2 locus, including rs9363918, for its differential allele distribution between long-lived individuals and general cohorts. Because NR5A2 modulates lipid clearance, anti-inflammatory mechanisms, and hepatic metabolism, researchers hypothesize that variation at this locus might confer subtle physiological advantages over decades of life. However, these survival-tracking signals represent complex statistical correlations rather than single-gene guarantees of an extended healthspan.
Evidence Strength and Genetic Architecture
The clinical and scientific evidence connecting rs9363918 to lifespan is classified as moderate. Unlike high-penetrance Mendelian loci that directly determine disease outcomes, variants identified through aging genome-wide association studies typically possess small individual effect sizes. Longevity genetics is characterized by polygenic architecture, where many minor alleles combine with personal environment to shift overall disease susceptibility. While individual studies observe frequency shifts in rs9363918 across extreme survival tiers, replication between diverse global cohorts remains variable due to demographic differences and survival cohort designs. As with most complex trait variants, rs9363918 does not cause or prevent age-related decline on its own.
Population Distribution and Ancestral Patterns
Allele frequencies for rs9363918 demonstrate notable variation across global populations according to genomic databases. In European reference groups, the minor allele frequency is approximately 0.42, making it a very common variant throughout the continent. South Asian populations exhibit an estimated minor allele frequency around 0.33, while rates differ across other worldwide groups. Because this polymorphism is widely distributed among healthy individuals globally, carrying either the major or minor allele falls entirely within the scope of normal human genomic diversity. These baseline frequencies help population geneticists establish control thresholds when distinguishing common background variation from disease-causing mutations.
Interpreting Your Genetic Results
Discovering your rs9363918 genotype provides an educational glimpse into personal genomics, but it is not a diagnostic tool or a biological forecast of your lifespan. Carrying a genotype statistically associated with longevity cohorts does not grant immunity from age-related conditions, nor does lacking that genotype preclude a long and healthy life. Established lifestyle factors—including balanced nutrition, regular exercise, smoking avoidance, and routine clinical screenings—exert an overwhelmingly larger influence on health outcomes than any single common non-coding variant. Genetic data should always be viewed as probabilistic context and discussed with a qualified medical provider or genetic counselor.
How common is this variant?
The minor allele frequency for rs9363918 is approximately 0.42 in individuals of European ancestry and approximately 0.33 in South Asian populations, representing a common polymorphism across multiple global groups.
Frequently asked questions
Does carrying a specific rs9363918 genotype guarantee a long life?
No. Longevity is a polygenic trait influenced by thousands of genetic variations interacting with environmental, behavioral, and medical factors. A single common polymorphism like rs9363918 only reflects statistical correlations across large populations and cannot predict individual lifespan.
What is the biological role of the NR5A2 gene?
NR5A2 encodes an orphan nuclear receptor that acts as a transcription factor in tissues such as the liver and pancreas. It plays an essential role in regulating bile acid synthesis, cholesterol transportation, and overall metabolic balance.
Is rs9363918 considered a pathogenic or disease-causing mutation?
No, rs9363918 is a common single nucleotide polymorphism present in millions of healthy individuals worldwide. It is not classified as a disease-causing mutation in clinical variant databases.
Can I alter my health habits based on my rs9363918 result?
You should not make lifestyle or medical changes based on this variant alone. Well-established preventive habits, such as regular physical activity, a nutrient-dense diet, and routine medical checkups, have a far greater impact on long-term healthspan than individual non-coding genetic markers.
Sources & further reading
Educational information only, last refreshed 9/11/2026. Not medical advice — these associations describe population statistics, not individual predictions.
Curious what your genotype is for rs9363918?
Upload a raw DNA file from 23andMe, AncestryDNA, MyHeritage, or FamilyTreeDNA and see this variant — plus thousands more — interpreted in your full report.
Get my report — $29