G6PC2 rs4613975: What Your Genotype Means
The rs4613975 variant is a single nucleotide polymorphism located within the G6PC2 gene. It is widely recognized in genetic research for its association with natural variations in fasting blood glucose levels in the general population.
What each genotype means
Typical fasting glucose regulation
This genotype represents the common genetic background associated with standard fasting blood glucose levels in many populations. Research indicates that G6PC2 acts as a negative regulator of insulin secretion, and this specific variant is part of the genetic architecture that influences how your body maintains glucose homeostasis. Please note that fasting glucose is influenced by many genetic and environmental factors, and this result does not constitute a medical diagnosis.
Carried by approximately 36% of the global population, assuming a 40% frequency for the minor allele.
Varied fasting glucose regulation
Carrying one copy of the minor allele is associated with subtle variations in fasting blood glucose levels compared to the major allele. Because G6PC2 helps regulate the sensitivity of insulin secretion to glucose, this genotype may influence your baseline metabolic profile. As fasting glucose levels are complex and multifactorial, you should discuss any concerns about your metabolic health or blood sugar monitoring with your healthcare provider.
Carried by approximately 48% of the global population, assuming a 40% frequency for the minor allele.
Distinct fasting glucose regulation
Carrying two copies of the minor allele is associated with measurable differences in fasting blood glucose levels in various studies. This variant is linked to the regulation of insulin secretion, which can impact how your body manages glucose during fasting states. This association is statistical in nature; please consult with a clinician or pharmacist to interpret these findings in the context of your overall health and clinical history.
Carried by approximately 16% of the global population, assuming a 40% frequency for the minor allele.
Understanding the rs4613975 Variant
The rs4613975 variant is a specific change in the DNA sequence located within the G6PC2 gene. In genetics, a single nucleotide polymorphism (SNP) like rs4613975 represents a variation at a single position in the genome. This particular variant is frequently studied because it sits in a region of the human genome that has been consistently linked to glycemic traits. Researchers identify these variants by comparing the DNA of large groups of people to see if certain genetic patterns correlate with measurable physical traits, such as blood sugar levels. Because this variant is common, it is often included in genome-wide association studies (GWAS) that aim to map the genetic architecture of metabolic health. It is important to note that while this variant is associated with fasting glucose, it is only one of many genetic and environmental factors that influence how the body regulates sugar.
The Role of the G6PC2 Gene
The G6PC2 gene provides instructions for making a protein that functions as a glucose-6-phosphatase catalytic subunit. This protein is primarily found in the pancreatic islets, which are the clusters of cells responsible for producing insulin. The G6PC2 protein acts as a negative regulator of glucose-stimulated insulin secretion. By modulating the release of insulin in response to glucose, this protein helps fine-tune the body's metabolic response. Research suggests that variations in the G6PC2 gene can alter the expression or function of this protein, which in turn may influence the set point for fasting blood glucose levels. Because the gene is highly specialized for pancreatic function, it has become a primary focus for scientists trying to understand the biological mechanisms that maintain glucose homeostasis and how these mechanisms might differ between individuals.
Research and Evidence Strength
The association between G6PC2 variants and fasting blood glucose is supported by moderate to strong evidence from the GWAS Catalog and various peer-reviewed studies. Large-scale genetic studies have consistently identified this locus as a significant contributor to the variance in fasting glucose levels among non-diabetic individuals. While the statistical association is robust, the clinical impact of any single variant like rs4613975 is generally considered modest. It is crucial to understand that these findings describe population-level trends rather than individual outcomes. The evidence does not suggest that this variant causes diabetes, but rather that it contributes to the natural, healthy range of blood sugar variation seen across the human population. As with all complex traits, blood glucose is influenced by a combination of polygenic factors, diet, physical activity, and other lifestyle variables that interact with one's genetic background.
Population Frequency and Interpretation
The rs4613975 variant is relatively common, with a global population frequency of approximately 40%. This means that a significant portion of the human population carries at least one copy of the variant allele. Because it is so prevalent, it is considered a normal part of human genetic diversity rather than a rare mutation. When interpreting information about this variant, it is essential to remember that genetic data is not a diagnostic tool. Knowing your genotype for rs4613975 does not provide a medical diagnosis or predict the development of specific health conditions. If you have concerns about your blood sugar levels or metabolic health, the most appropriate course of action is to consult with a healthcare professional. They can provide personalized guidance based on clinical blood tests and your overall health history, which are far more informative than genetic data alone.
How common is this variant?
The rs4613975 variant is common globally, appearing in approximately 40% of the population across various ancestral groups.
Frequently asked questions
Does having the rs4613975 variant mean I have diabetes?
No, this variant is associated with natural variations in fasting blood sugar levels within the normal range. It is not a diagnostic marker for diabetes or any other medical condition.
Can I use this genetic information to change my diet?
Genetic information regarding this variant is for educational purposes and should not be used to make medical or dietary decisions. Always consult with a registered dietitian or doctor before making significant changes to your health regimen.
Is this variant found in all populations?
Yes, this variant is found across many different global populations. Its frequency can vary slightly depending on ancestry, but it is considered a common genetic polymorphism.
Where can I find more information about G6PC2?
You can find reliable information about the G6PC2 gene and its functions through resources like MedlinePlus Genetics or the NCBI Gene database. These sites provide comprehensive, peer-reviewed summaries of human genes.
Sources & further reading
Educational information only, last refreshed 10/2/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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