TERT rs801114: Skin Aging and Ultraviolet Susceptibility
The rs801114 single-nucleotide polymorphism is a common non-coding regulatory variant mapped to the TERT locus on chromosome 5. Research links genetic variation in this region to differences in cutaneous cellular senescence, skin tissue expression, and susceptibility to ultraviolet photoaging. However, overall evidence for this specific marker remains limited and primarily exploratory in broad trait association studies.
What each genotype means
Typical cutaneous senescence rate
You carry two copies of the standard G allele at rs801114 in the TERT locus. Research indicates this genotype is associated with baseline telomerase regulation and typical rates of cellular senescence under cumulative ultraviolet radiation exposure. Because evidence evaluating this variant's direct physiological impact remains limited and modest, this genotype reflects a standard background risk profile.
Carried by approximately 30% to 45% of individuals across global populations, with slightly higher frequencies in populations of East Asian and African ancestry.
Intermediate cellular senescence tendency
You carry one copy of the A allele and one copy of the G allele at rs801114. This heterozygous genotype is statistically associated with intermediate telomerase expression and a modest shift in cutaneous senescence susceptibility following chronic sun exposure. Current scientific evidence for this specific regulatory marker is limited, meaning overall lifestyle and environmental sun protection remain the predominant drivers of skin health.
Carried by approximately 45% to 50% of people globally, representing the most common genotype in many ancestries.
Altered cellular senescence susceptibility
You carry two copies of the minor A allele at rs801114 within the TERT gene region. Published studies suggest this genotype may correlate with altered cutaneous cellular senescence dynamics and differing sensitivity to cumulative ultraviolet radiation damage. However, because scientific evidence for this regulatory variant is preliminary and limited in scope, these findings describe subtle statistical tendencies rather than definitive clinical outcomes.
Carried by roughly 10% to 20% of individuals worldwide, occurring most frequently in European and South Asian populations.
Genomic Location and Variant Characteristics
The single-nucleotide polymorphism rs801114 resides within the telomerase reverse transcriptase (TERT) gene locus on the short arm of chromosome 5 (5p15.33). As an intronic or flanking regulatory variant, rs801114 does not alter the amino acid sequence of any protein directly. Instead, markers located in this chromosomal region frequently act as expression quantitative trait loci (eQTLs) or disrupt cis-regulatory elements, such as enhancers and transcription factor binding sites. In population databases like dbSNP and gnomAD, rs801114 is cataloged as a bi-allelic single nucleotide exchange involving cytosine (C) and thymine (T) alleles. Genetic variations within this chromosomal domain often exhibit varying degrees of linkage disequilibrium with other widely studied non-coding variants in the locus, meaning rs801114 may serve as a proxy tag for surrounding functional chromatin architecture rather than functioning as the sole causal driver itself.
The Biological Role of the TERT Gene
The TERT gene provides the genetic blueprint for the catalytic subunit of telomerase, a ribonucleoprotein complex responsible for maintaining telomere repeat sequences at the ends of linear chromosomes. Telomeres naturally shorten with successive rounds of cell division; when they reach a critically short threshold, cells enter a permanent state of growth arrest termed cellular senescence. Beyond canonical telomere lengthening, TERT also exerts non-canonical regulatory roles, modulating cellular survival pathways, mitochondrial homeostasis, and the cellular response to oxidative stress. In somatic tissues such as human skin, baseline TERT transcription is tightly repressed under basal conditions. However, fine-tuning of its expression in dermal fibroblasts and epidermal keratinocytes can directly impact cellular resilience, repair capacity following exogenous damage, and the onset of tissue-level senescence markers.
Association with Cutaneous Aging and UV Damage
Research across dermatological genetics has repeatedly highlighted variants within the TERT region for their contribution to skin aging phenotypes, including solar lentigines (age spots) and cumulative ultraviolet (UV) radiation susceptibility. Chronic exposure to UV radiation induces DNA damage, promotes reactive oxygen species formation, and accelerates cellular senescence within cutaneous layers. Published genome-wide association studies (GWAS) and tissue-specific eQTL analyses—such as data from the Genotype-Tissue Expression (GTEx) project—demonstrate that specific regulatory variants at the TERT locus selectively modulate TERT expression in sun-exposed and unexposed skin. In the context of rs801114, scientific evidence linking this specific SNP directly to photoaging remains classified as limited and exploratory. While regional TERT signals show robust statistical links with pigmentary aging markers, individual tag SNPs may merely reflect haplotype blocks rather than standalone physiological determinants.
Population Frequency and Ancestral Distribution
Global genetic databases show that rs801114 is a common polymorphism found across diverse human ancestries. Based on reference data from gnomAD and dbSNP, the minor allele frequency typically ranges between 0.35 and 0.45 in broad demographic cohorts, including European, East Asian, and admixed American populations. Because both the reference and alternate alleles are prevalent globally, homozygous and heterozygous genotypes are routinely observed in healthy individuals without causing monogenic disease. This widespread distribution is characteristic of common non-coding variations that exert subtle, polygenic influences on complex biological traits rather than acting as high-penetrance clinical mutations.
Clinical Interpretation: What This SNP Can and Cannot Tell You
Having information about your rs801114 genotype provides educational insight into polygenic traits but cannot be used to diagnose, predict, or prevent any dermatological condition. Complex traits such as skin aging, wrinkling, and photocarcinogenesis are shaped by hundreds of genetic variants acting in concert with major environmental drivers. Sun exposure history, the regular use of broad-spectrum sunscreen, protective clothing, smoking status, and general skin care exert far greater influence on long-term cutaneous health than any individual single-nucleotide variant. Direct-to-consumer genetic findings for rs801114 should never replace regular clinical skin examinations by a licensed dermatologist, nor should they guide personalized medical decisions.
How common is this variant?
The rs801114 variant is common globally, with minor allele frequencies generally falling between 0.35 and 0.45 across diverse ancestral populations in major reference panels.
Frequently asked questions
Does my rs801114 genotype determine if I will get premature wrinkles or sun spots?
No. While rs801114 is situated in the TERT gene, which is involved in cellular senescence, skin aging is predominantly driven by chronic UV exposure and polygenic factors. Carrying a particular genotype only reflects a subtle statistical correlation, not an inevitable cosmetic outcome.
Is the TERT rs801114 variant considered a disease-causing mutation?
No, rs801114 is not a pathogenic mutation and does not cause monogenic telomere biology disorders. It is a common, non-coding single-nucleotide polymorphism found in large percentages of healthy populations worldwide.
Can taking telomerase supplements alter the effects of this variant?
There is no clinical evidence that commercial supplements can target or counteract the biological activity of specific TERT regulatory variants. Most commercial anti-aging supplements lack rigorous validation in human clinical trials, and you should always consult a physician before starting new dietary regimens.
Should I adjust my daily sun protection routine based on this genetic test?
No, standard dermatological guidelines apply universally regardless of your genotype. Consistent use of broad-spectrum sunscreen, seeking shade, and wearing UV-protective clothing remain the most effective strategies for preventing photoaging and skin damage.
Sources & further reading
Educational information only, last refreshed 9/14/2026. Not medical advice — these associations describe population statistics, not individual predictions.
Curious what your genotype is for rs801114?
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 — $29Related variants in TERT
Promoter polymorphism in telomerase reverse transcriptase affecting transcriptional efficiency and telomere length maintenance.
Intronic regulatory variant in TERT; associated with telomere length and cellular aging markers.
Located in a regulatory region for telomerase reverse transcriptase, this single nucleotide polymorphism demonstrates significant gene-environment interactions with chronic psychosocial stress and HPA axis regulation.
This variant is associated with telomere length and cancer risk.
This variant is associated with an increased risk of developing meningioma as identified in recent genome-wide association studies.