GATA3 rs10305492: What Your Genotype Means
The genetic variant rs10305492 is a common polymorphism located within the GATA3 gene. It is frequently included in large-scale genome-wide association studies (GWAS) investigating the genetic basis of various human traits.
What each genotype means
Typical GLP-1 receptor profile
This is the most common genotype observed in most populations. Research indicates that individuals with this genotype do not carry the specific GLP1R variant associated with lower fasting glucose and reduced type 2 diabetes risk. Please discuss any concerns regarding metabolic health or medication response with your clinician or pharmacist.
This is the major genotype and is carried by the vast majority of individuals across global populations.
Associated with lower fasting glucose
Carriers of this genotype possess one copy of the A allele (sometimes referred to as the p.Ala316Thr or A316T variant). Population studies have associated the A allele with lower fasting blood glucose levels and a statistically reduced risk of type 2 diabetes. As this variant may influence how your body processes glucose, please discuss these findings with your clinician if you have questions about your metabolic health or potential medication options.
This genotype is relatively uncommon, with the A allele often occurring at low frequencies (typically 1–2%) in many populations.
Enhanced metabolic glucose association
Carriers of this genotype possess two copies of the A allele. Research suggests that this variant is associated with lower fasting glucose and a potential reduction in the risk of developing type 2 diabetes. Because this genotype may influence your metabolic profile, please share these results with your healthcare provider to discuss how they relate to your overall health and any future clinical decisions.
This genotype is very rare, occurring in a very small fraction of the population (e.g., approximately 0.03% in some large-scale cohorts).
What is the rs10305492 Variant?
The variant rs10305492 is a single nucleotide polymorphism (SNP) located within the GATA3 gene. In genomics, a SNP represents a variation at a single position in the DNA sequence among individuals. This specific variant is cataloged in public databases and has been identified through genome-wide association studies (GWAS), which are research approaches used to identify associations between specific genetic variants and observable human traits or conditions. Because rs10305492 is a common variant, it appears frequently in large-scale datasets that compare the genomes of thousands of people to find statistical correlations. It is important to note that being identified in a GWAS does not necessarily mean the variant causes a specific trait; rather, it indicates that the variant is statistically associated with that trait within the populations studied. Researchers use this information to better understand the complex architecture of human genetics and how different regions of the genome may contribute to biological diversity.
The Role of the GATA3 Gene
The GATA3 gene provides instructions for producing a protein known as GATA binding protein 3. This protein functions as a transcription factor, which means it acts like a master switch that helps control the activity of other genes. GATA3 is particularly well-known for its essential role in the development and differentiation of various tissues, including the immune system, the skin, and the mammary glands. By binding to specific regions of DNA, GATA3 regulates the expression of genes necessary for the proper function and maturation of T-cells, which are critical components of the immune response. Because of its broad influence on cellular development and gene regulation, variations in or near the GATA3 gene are of significant interest to scientists studying how genetic differences might influence susceptibility to immune-related conditions or other developmental processes. Understanding the function of this gene helps researchers contextualize why variants located in or near this region might be flagged in large-scale genetic studies.
Research Associations and Evidence
The evidence linking rs10305492 to specific human traits is currently classified as limited. While the variant has been identified in various GWAS, the strength of these associations can vary significantly depending on the population being studied and the specific trait being analyzed. In many cases, the statistical signal observed for a common variant like rs10305492 may be small, and the biological mechanism by which it might influence a trait is often not fully understood. It is common for initial findings in genetic research to require replication across multiple, diverse cohorts to confirm their validity. Because human traits are typically polygenic—meaning they are influenced by the combined effects of many different genetic variants and environmental factors—it is difficult to isolate the impact of a single SNP. Consequently, while rs10305492 is a documented marker in the GWAS Catalog, it is not currently used as a clinical diagnostic tool or a definitive predictor of any specific health outcome.
What You Can and Cannot Do
It is essential to understand that genetic information from studies like GWAS is intended for research and educational purposes, not for personal medical diagnosis. You cannot use your genotype at rs10305492 to predict your health or determine your risk for any specific condition. Genetic associations describe statistical trends across large groups of people and do not account for the unique combination of lifestyle, environment, and other genetic factors that shape an individual's health. If you have questions about your health or concerns about traits you have observed, the most appropriate course of action is to consult with a qualified healthcare professional. They can provide personalized assessments based on clinical evidence, family history, and diagnostic testing. If you are ever prescribed medication based on genetic testing, always discuss the implications and dosing with your clinician or pharmacist, as they are best equipped to interpret how genetic information applies to your specific medical care.
How common is this variant?
The rs10305492 variant is considered a common polymorphism, meaning it is found at significant frequencies across diverse global populations.
Frequently asked questions
Is rs10305492 a diagnostic marker for disease?
No, rs10305492 is not a diagnostic marker. It is a common genetic variant identified in research studies, and it does not provide information that can be used to diagnose or predict individual health conditions.
Why does the evidence for this variant seem limited?
The evidence is considered limited because genetic associations found in large-scale studies often require further replication and biological validation. Many factors, including population diversity and the complex nature of human traits, make it difficult to establish a definitive clinical impact for a single SNP.
Should I change my lifestyle based on this genotype?
No, you should not change your lifestyle based on this genotype. Standard health recommendations, such as maintaining a balanced diet and regular exercise, are based on broad clinical evidence and apply to everyone regardless of their specific genetic variants.
Where can I find more information about GATA3?
You can find reliable information about the GATA3 gene and its functions through resources like MedlinePlus Genetics. These platforms provide educational summaries of genes and their roles in human health.
Sources & further reading
Educational information only, last refreshed 9/15/2026. Not medical advice — these associations describe population statistics, not individual predictions.
Curious what your genotype is for rs10305492?
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 GATA3
Intronic regulatory variant near GATA3 modulating Th2 differentiation and conferring risk of allergic rhinitis and asthma.
Associated with various traits in GWAS, including immune-related phenotypes and blood cell counts.
This variant is associated with immune-related traits and susceptibility to certain allergic conditions.
Variant in the GATA3 locus associated with allergic sensitization and allergic disease risk.
An intergenic variant residing in a regulatory chromatin region significantly associated with risk of allergic rhinitis.
This SNP is associated with susceptibility to breast cancer and variations in hormone receptor status.