IL2 rs13119723: Understanding This Genetic Variant
The rs13119723 variant is a specific change in the DNA sequence located within the IL2 gene. Research has investigated its potential association with celiac disease, particularly within certain European populations.
What each genotype means
Typical risk profile
Research indicates that the G allele at this position is more common in population controls than in individuals with celiac disease. Carrying the GG genotype does not eliminate your risk, as celiac disease is complex and influenced by many other genetic and environmental factors. This result should not be used to diagnose or rule out any condition.
The G allele is the more common allele in many European populations, where it has been observed at frequencies of approximately 84% in control groups.
Slightly elevated genetic risk
Studies have observed that the A allele is more frequent in individuals with celiac disease compared to the general population. While this genotype is statistically associated with a modest increase in risk, it is important to remember that celiac disease development is multifactorial and heavily dependent on other factors, such as HLA status and dietary exposure. This association does not mean you will develop the condition.
This genotype is common in European populations, reflecting the presence of both the G and A alleles in these groups.
Increased genetic risk factor
The A allele at this variant has been identified in research as a potential susceptibility factor for celiac disease. If you carry this genotype, you may have a higher statistical predisposition compared to those with the GG genotype; however, this is not a diagnostic marker and many people with this genotype do not have celiac disease. Consult a healthcare provider if you have concerns about digestive health or autoimmune symptoms.
The A allele is the minor allele in most studied European populations, making the AA genotype less common than the others.
What is rs13119723?
The rs13119723 variant is a single nucleotide polymorphism, or SNP, which is a common type of genetic variation where a single building block of DNA—a nucleotide—is replaced by another. This specific SNP is located within the IL2 gene, which provides instructions for making a protein called interleukin-2. Interleukin-2 is a critical signaling molecule in the immune system, helping to regulate the activity of white blood cells, particularly T cells. Because the immune system plays a central role in how the body responds to foreign substances, variations in genes like IL2 are frequently studied to understand how they might influence immune-mediated conditions. Scientists track these variants using their rsID (reference SNP identification number) to ensure consistency across global research databases, allowing them to compare findings from different studies and populations.
The Role of the IL2 Gene
The IL2 gene encodes interleukin-2, a cytokine that acts as a chemical messenger. This protein is essential for the growth, proliferation, and differentiation of T cells, which are white blood cells that identify and fight off pathogens. By promoting the survival and function of these immune cells, interleukin-2 helps maintain a balanced immune response. When the immune system is overactive or misdirected, it can lead to autoimmune disorders, where the body mistakenly attacks its own healthy tissues. Because of its central role in immune regulation, researchers often examine the IL2 gene to see if specific genetic variations might alter the production or function of the interleukin-2 protein. Understanding these variations is a key part of modern immunology, as it helps clarify why some individuals may be more susceptible to immune-related health conditions than others.
Research and Celiac Disease
Scientific research has explored the potential link between rs13119723 and celiac disease, an autoimmune condition triggered by the ingestion of gluten. Celiac disease causes damage to the small intestine and is known to have a strong genetic component. Some studies have suggested that rs13119723 shows borderline significance for an association with celiac disease, particularly in the Dutch population. It is important to note that 'borderline significance' means the evidence is not definitive and requires further validation in larger, more diverse cohorts. Genetic associations are often complex, and a single SNP rarely acts as a sole cause for a disease. Instead, it may contribute a very small amount to an individual's overall risk profile. Current evidence for this variant is considered moderate, and it is not used as a diagnostic tool for celiac disease in clinical practice.
Interpreting Genetic Information
When you encounter information about genetic variants like rs13119723, it is helpful to remember that genetic risk is only one piece of a much larger puzzle. Factors such as environment, lifestyle, and other genetic markers all interact to influence health outcomes. Because the association between this variant and celiac disease is based on specific population studies, the findings may not apply universally to all individuals. If you are concerned about celiac disease or other immune-related symptoms, the most reliable approach is to consult with a healthcare professional. They can provide appropriate testing and guidance based on your personal health history. Never use genetic data to make medical decisions or self-diagnose. Always discuss any questions about your genetic results with a qualified clinician or genetic counselor who can help you interpret the information in the context of your overall health.
How common is this variant?
Specific population frequency data for rs13119723 is not widely documented in general public databases, and the association is noted primarily in specific European cohorts.
Frequently asked questions
Does having this variant mean I have celiac disease?
No. Genetic variants are not diagnostic. Celiac disease is a complex condition, and having a specific genotype does not mean you will develop the disease.
Should I change my diet based on this SNP?
You should not change your diet based on a single genetic variant. If you suspect you have celiac disease, consult a doctor for proper diagnostic testing before making dietary changes.
Where can I find more information on celiac disease?
The National Library of Medicine's MedlinePlus website provides comprehensive, trusted information on celiac disease, its symptoms, and standard management strategies.
Is this variant used in clinical genetic testing?
No. This variant is primarily a subject of research studies and is not currently used in standard clinical diagnostic panels for celiac disease.
Sources & further reading
Educational information only, last refreshed 10/27/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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