SOD2 rs5746136: Understanding Mitochondrial Oxidative Stress
The rs5746136 variant is a single nucleotide polymorphism located within the SOD2 gene, which encodes a critical mitochondrial enzyme. Researchers study this variant to understand how genetic differences may influence the body's management of oxidative stress and cellular health.
What each genotype means
Baseline oxidative stress profile
This genotype represents the common baseline for this variant. Research into this specific site in the SOD2 gene is ongoing, and while some studies suggest associations with health outcomes, these findings are often complex and vary significantly by population. This result should not be used to predict specific health risks or outcomes.
This is the most common genotype observed in many global populations, though exact frequencies vary by ancestry.
Varied oxidative stress response
Carriers of this genotype have been studied for potential links to altered mitochondrial function and susceptibility to certain conditions, such as sudden sensorineural hearing loss or specific breast cancer subtypes. Because these associations are based on statistical observations in specific groups, they do not indicate a direct cause-and-effect relationship for any individual. Please discuss any health concerns with your healthcare provider.
This genotype is found at varying frequencies across different ethnic groups, appearing in a significant portion of the population.
Potential oxidative stress sensitivity
Some research indicates that individuals with this genotype may have different responses to oxidative stress compared to those with the CC genotype. Studies have explored its association with susceptibility to certain cancers and other health conditions, though results are mixed and often depend on other environmental or genetic factors. This information is for educational purposes and should not be used for medical decision-making.
This is generally the least common genotype for this variant in most studied populations.
What is rs5746136?
The rs5746136 variant is a specific change in the DNA sequence located in the 3' untranslated region (UTR) of the SOD2 gene on chromosome 6. In genetics, a single nucleotide polymorphism (SNP) like rs5746136 represents a variation at a single position in the DNA building blocks. Because this variant sits in the 3' UTR, it is not part of the protein-coding sequence itself, but rather in a regulatory region that may influence how the gene's instructions are processed or stabilized within the cell. Scientists track these variations to determine if they correlate with differences in how individuals handle biological stress at the molecular level.
The Role of the SOD2 Gene
The SOD2 gene provides instructions for making an enzyme called manganese superoxide dismutase (MnSOD). This enzyme is located inside the mitochondria, the powerhouses of the cell, where it plays a vital role in neutralizing harmful molecules known as superoxide radicals. By converting these radicals into less damaging substances, SOD2 acts as a primary defense mechanism against oxidative stress. When mitochondria function efficiently, they maintain cellular balance; however, when oxidative stress exceeds the cell's capacity to neutralize it, it can lead to cellular damage. Because SOD2 is essential for mitochondrial health, researchers frequently investigate how variations in this gene might affect the enzyme's efficiency or expression levels.
Research and Associations
Scientific research into rs5746136 has primarily focused on its potential role in complex, age-related conditions. For example, some studies have examined whether this variant is associated with the risk of developing late-onset Alzheimer's disease, as oxidative damage is a known factor in neurodegenerative processes. However, the evidence remains mixed and is often limited to specific family-based cohorts. Because the SOD2 gene is characterized by high linkage disequilibrium—meaning many variants are inherited together in a small region—it is often difficult for researchers to isolate the specific effect of rs5746136 from other nearby genetic changes. Consequently, while the variant is a subject of ongoing scientific interest, it is not currently used as a definitive clinical marker for predicting disease risk or health outcomes.
Population Frequency
The frequency of the rs5746136 variant is variable across different global populations. Genetic databases indicate that the distribution of the alleles can differ significantly depending on ancestral background, which is a common feature of many human genetic variants. Because frequency data is highly dependent on the specific population being sampled, there is no single 'normal' frequency that applies to everyone. Researchers must account for this ancestral diversity when designing studies to ensure that findings are not skewed by population-specific genetic patterns.
Interpreting Genetic Information
It is important to understand that having a specific genotype for rs5746136 does not determine your health status. Genetic variants are only one piece of a much larger puzzle that includes diet, lifestyle, environment, and other genetic factors. Many people with various genotypes for this SNP maintain excellent health and normal oxidative stress markers. If you have received information about this variant from a genetic test, it is best viewed as a data point for educational purposes rather than a medical diagnosis. You cannot 'fix' or 'change' this variant, and there is no consensus on specific dietary or lifestyle interventions based solely on this SNP. Always consult with a qualified healthcare provider or a genetic counselor if you have concerns about your health or the results of a genetic test.
How common is this variant?
The frequency of the rs5746136 variant is variable across different global populations, with allele distributions differing significantly based on ancestral background.
Frequently asked questions
Does the rs5746136 variant cause disease?
No, this variant is not a direct cause of disease. It is a genetic polymorphism that researchers study for its potential association with oxidative stress management, but it does not determine health outcomes on its own.
Can I change my SOD2 genotype?
No, your genetic sequence is inherited from your parents and remains constant throughout your life. You cannot alter your genotype through diet or lifestyle changes.
Should I take supplements based on my SOD2 results?
There is no scientific consensus that supports taking specific supplements based on this variant. You should discuss any supplement use with your doctor or a registered dietitian to ensure it is safe and appropriate for your individual health needs.
Where can I find more information about SOD2?
You can find reliable information about the SOD2 gene and its functions through resources like MedlinePlus Genetics or the National Center for Biotechnology Information (NCBI) Gene database.
Sources & further reading
Educational information only, last refreshed 9/22/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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