IL6R rs14035: Understanding Your Genetic Variant
The rs14035 variant is a synonymous polymorphism located within the IL6R gene, which encodes the interleukin-6 receptor. This genetic marker has been studied for its potential associations with post-exercise recovery kinetics and systemic inflammatory cytokine levels.
What each genotype means
Typical post-exercise recovery profile
Research suggests this genotype is associated with typical inflammatory responses following prolonged exercise. While IL-6 acts as an important myokine for muscle repair and metabolic regulation, individuals with this genotype generally exhibit expected patterns of cytokine signaling and recovery kinetics.
This is a common genotype, carried by a significant portion of European and East Asian populations, consistent with the observed minor allele frequency of approximately 0.35–0.40 for the T allele.
Intermediate recovery signaling profile
As a carrier of both the C and T alleles, your genetic profile may show intermediate markers regarding how your body manages post-exercise inflammatory signals. Population studies indicate that variants in this gene can influence the kinetics of systemic inflammatory cytokines after intense physical activity. Please discuss any concerns regarding training load, recovery time, or persistent soreness with a qualified clinician or sports medicine professional.
Carried by a large segment of the population, often representing the most frequent heterozygous combination in these ancestries.
Variant recovery signaling profile
This genotype is associated with observed differences in how IL-6, a key signaling molecule released during exercise, may influence your systemic inflammatory response and recovery kinetics. Evidence suggests that for some individuals, this variant may be linked to prolonged recovery periods or altered cytokine levels following strenuous physical activity. You should discuss your recovery patterns and exercise-related inflammatory responses with your clinician or a specialized sports nutritionist to optimize your training and recovery strategy.
This genotype is found at a lower frequency than the CC or CT genotypes in European and East Asian populations, consistent with the population allele frequencies.
What is the rs14035 Variant?
The rs14035 variant is a single nucleotide polymorphism (SNP) found within the IL6R gene. In genetics, a SNP represents a variation at a single position in a DNA sequence among individuals. This specific variant is classified as synonymous, meaning that the change in the DNA sequence does not alter the amino acid sequence of the resulting protein. Despite this, synonymous variants can sometimes influence gene expression, mRNA stability, or splicing efficiency, which is why researchers investigate them for potential biological impacts. The variant is situated on chromosome 1, where the IL6R gene resides. Because it does not change the protein structure directly, its functional significance is often considered more subtle than non-synonymous variants, requiring large-scale statistical studies to identify potential physiological associations.
The Role of the IL6R Gene
The IL6R gene provides instructions for making the interleukin-6 receptor protein. This receptor is a critical component of the immune system, as it binds to interleukin-6 (IL-6), a cytokine that acts as both a pro-inflammatory mediator and an anti-inflammatory myokine. When IL-6 binds to its receptor, it triggers signaling pathways that regulate immune responses, hematopoiesis, and the body's reaction to physical stress. During and after prolonged exercise, muscle cells release IL-6 into the bloodstream, which helps coordinate metabolic processes and recovery. Because the IL6R protein is central to how the body perceives and responds to these inflammatory signals, variations in the gene encoding this receptor are of significant interest to researchers studying exercise physiology, systemic inflammation, and metabolic health.
Research and Evidence Strength
Current research into rs14035 is characterized by limited evidence regarding its direct impact on human health or athletic performance. While some studies have explored the link between IL6R variants and post-exercise recovery kinetics or inflammatory cytokine levels, the findings are often preliminary. It is important to distinguish between statistical associations observed in research cohorts and definitive biological causation. Many genetic variants identified in fitness-related studies show small effect sizes, meaning they explain only a tiny fraction of the variability in human performance or recovery. Because the evidence for rs14035 is currently limited, it should not be used to predict athletic potential or health outcomes. Further large-scale, peer-reviewed studies are necessary to confirm whether this specific SNP has a meaningful influence on physiological processes in diverse populations.
What You Can and Cannot Do With This Information
Genetic information regarding variants like rs14035 is intended for educational purposes only. You cannot use this information to diagnose a medical condition, determine your risk for disease, or create a personalized training program. Genetic markers are only one piece of a complex puzzle that includes environment, nutrition, training history, and other genetic factors. If you are interested in how your genetics might influence your health or fitness, it is best to consult with a qualified healthcare professional, such as a sports medicine physician or a genetic counselor. They can help you interpret your health data in the context of your overall medical history. Never make changes to your health or exercise regimen based solely on a single genetic variant, and always discuss any concerns about your physical performance or recovery with a clinician.
How common is this variant?
The minor allele frequency for rs14035 is approximately 0.40 in European populations and 0.35 in East Asian populations, indicating that the variant is relatively common.
Frequently asked questions
Is rs14035 a predictor of athletic performance?
No, there is no evidence that rs14035 can predict athletic performance. While some research explores its role in exercise recovery, the evidence is limited and not sufficient for performance prediction.
Does this variant affect my risk of inflammation?
While the IL6R gene is involved in inflammatory pathways, the specific impact of the rs14035 variant on systemic inflammation is not well-established. It should not be used to assess your personal risk for inflammatory conditions.
Where can I find more information about my specific genotype?
You can look up your SNP data in public databases like dbSNP or the GWAS Catalog. However, these resources are for research purposes and do not provide medical interpretations for individuals.
Should I change my exercise routine based on this SNP?
No, you should not change your exercise routine based on this or any other single genetic variant. Always consult with a professional trainer or physician before making significant changes to your fitness plan.
Sources & further reading
Educational information only, last refreshed 9/15/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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A functional missense variant (p.Asp358Ala) in the IL6R gene associated with increased levels of soluble IL-6 receptor and modulation of inflammatory responses.
An intronic variant in the IL6R gene associated with systemic inflammatory signaling, reduced risk of certain cardiovascular conditions, and parental lifespan.
This variant is a functional polymorphism in the IL6R gene associated with altered levels of soluble interleukin-6 receptor and C-reactive protein, influencing inflammatory response.
This SNP is associated with variations in C-reactive protein (CRP) levels and is considered a marker for systemic inflammation and cardiovascular risk.
This variant is associated with soluble IL-6 receptor levels and is linked to inflammatory markers and cardiovascular disease risk.
Functional missense variant (p.Asp358Ala) that enhances proteolytic shedding of IL-6R to elevate soluble receptor levels while dampening classical IL-6 inflammatory signaling, conferring protection against coronary heart disease.