SOD2 rs2758331: Understanding Your Genetic Variant
The rs2758331 variant is a common genetic change located within the SOD2 gene, which plays a critical role in mitochondrial health. Research has investigated its potential associations with healthy aging and various health traits, though evidence remains moderate and context-dependent.
What each genotype means
Common SOD2 variant profile
This genotype represents the most frequently observed sequence at this location in the SOD2 gene. While this gene is involved in mitochondrial oxidative stress response, current research does not establish this specific variant as a primary driver of clinical health outcomes. It is considered a standard genetic variation found in the general population.
This is the most common genotype observed across most global populations.
Common SOD2 variant profile
This genotype indicates you carry one copy of the minor allele at this position. Research into this specific SOD2 variant is ongoing, and it is not currently linked to significant changes in mitochondrial function or disease risk. It is considered a common variation within the human population.
This genotype is found at moderate frequencies in many populations worldwide.
Common SOD2 variant profile
This genotype represents the homozygous minor state for this variant. There is no robust evidence suggesting that this specific genetic sequence significantly alters SOD2 enzyme activity or impacts long-term health or aging. It is a common, benign variation observed in healthy individuals.
This genotype is less common than the AA or AG states but is still frequently observed across diverse ancestral groups.
What is rs2758331?
The rs2758331 variant is a single nucleotide polymorphism (SNP) located within the SOD2 gene on chromosome 6. In genetics, a SNP represents a variation at a single position in the DNA sequence among individuals. This specific variant is cataloged in major databases like dbSNP and is frequently studied alongside other variants in the same gene. Because it sits within the SOD2 gene, researchers are interested in whether this change alters the structure or expression of the resulting protein. While many SNPs have no observable effect on human health, others may influence how our bodies respond to environmental stressors. The rs2758331 variant is considered a common genetic marker, meaning it is found frequently across diverse human populations. Scientists use this variant to explore the genetic architecture of complex traits, particularly those related to cellular maintenance and the aging process.
The Role of the SOD2 Gene
The SOD2 gene provides instructions for making an enzyme called superoxide dismutase 2, also known as manganese superoxide dismutase (MnSOD). This enzyme is primarily located in the mitochondria, the powerhouses of our cells. During the process of energy production, mitochondria naturally generate reactive oxygen species, including superoxide radicals, which can be toxic to cells if they accumulate. SOD2 acts as a critical antioxidant defense system by converting these harmful superoxide radicals into less toxic molecules like hydrogen peroxide and oxygen. By neutralizing these radicals, SOD2 helps protect cellular components from oxidative damage. Because mitochondrial function is essential for energy metabolism and cellular longevity, the SOD2 gene is a frequent subject of research regarding its role in aging, metabolic health, and the body's response to oxidative stress.
Research and Evidence
Scientific research into rs2758331 has explored its potential links to various health outcomes, including healthy aging and disease susceptibility. Some studies have examined whether this variant influences the efficiency of the SOD2 enzyme or its expression levels. However, the evidence regarding its clinical impact is considered moderate and sometimes conflicting. For instance, while some studies have investigated its role in cancer risk or cardiovascular health, others have reported a lack of significant association in specific populations. It is important to note that genetic associations are often complex and influenced by environmental factors, lifestyle, and other genetic markers. Because findings can vary significantly between different ethnic groups and study designs, the scientific community continues to evaluate the functional significance of this variant. Currently, there is no consensus that this specific SNP serves as a definitive predictor for any single health condition.
Interpreting Your Information
Understanding your genetic data can be an educational experience, but it is important to maintain a balanced perspective. Genetic variants like rs2758331 represent only a small piece of the puzzle regarding your overall health. Most traits and health outcomes are polygenic, meaning they are influenced by hundreds or thousands of variants working in concert with your environment and lifestyle choices. You cannot use this information to diagnose a medical condition or predict your lifespan. If you are concerned about your health, mitochondrial function, or how your genetics might influence your wellness, the best approach is to consult with a qualified healthcare professional. They can provide context based on your full medical history and clinical testing. Avoid making significant changes to your diet, supplements, or lifestyle based solely on a single genetic result without professional guidance.
How common is this variant?
The rs2758331 variant is a common polymorphism, with its genotypes appearing at varying frequencies across different global ancestral populations.
Frequently asked questions
Is rs2758331 a disease-causing mutation?
No, rs2758331 is a common genetic variant, not a rare disease-causing mutation. While it is studied for its potential influence on health traits, it is not considered a direct cause of any specific genetic disorder.
Can I use this SNP to predict my lifespan?
No. Lifespan is a highly complex trait influenced by a vast array of genetic, environmental, and lifestyle factors. A single SNP like rs2758331 cannot be used to predict an individual's lifespan.
Should I take supplements if I have a specific SOD2 genotype?
You should not start or change any supplement regimen based on your genotype without consulting a doctor or pharmacist. They can evaluate your specific health needs and ensure any supplements are safe and appropriate for you.
Where can I find more information about SOD2?
You can find reliable information about the SOD2 gene through resources like the NIH's MedlinePlus Genetics or the NCBI Gene database. These sites provide comprehensive, peer-reviewed summaries of gene functions and associated research.
Sources & further reading
Educational information only, last refreshed 9/21/2026. Not medical advice — these associations describe population statistics, not individual predictions.
Curious what your genotype is for rs2758331?
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 SOD2
A missense variant (p.Ala16Val) modulating mitochondrial superoxide dismutase import efficiency, cellular antioxidant defense, and exercise-induced muscle damage recovery traits.
Also known as Val16Ala, this functional variant affects the mitochondrial targeting sequence of superoxide dismutase 2, modulating cellular oxidative stress defenses.
Also designated Val16Ala, this common functional missense variant alters mitochondrial targeting efficiency of superoxide dismutase 2, influencing cellular antioxidant defense and oxidative stress response.
Located in the mitochondrial superoxide dismutase 2 gene region, this SNP influences cellular redox defenses against UV-induced reactive oxygen species in human dermal fibroblasts.
This SNP is involved in the regulation of mitochondrial superoxide dismutase and is studied for its role in oxidative stress management and dietary requirements.