GRIA4 rs11601239: What Your Genotype Means
The rs11601239 variant is a single-nucleotide polymorphism located within the GRIA4 gene. It has been identified in scientific research as being associated with variations in spherical equivalent refraction and spherical power, which are key components of refractive error.
What each genotype means
Typical refractive profile
This genotype is considered the baseline for this variant in studies of refractive error. It does not show the specific association with spherical equivalent refraction or spherical power observed with the alternative allele.
This is a common genotype found across diverse ancestral groups.
Potential refractive variation
This genotype has been identified in research as having a modest association with variations in spherical equivalent refraction and spherical power. These findings are based on population-level statistical associations and do not predict your individual vision health.
This genotype is frequently observed, particularly in East Asian populations where this variant is well-documented.
Potential refractive variation
This genotype is associated with small, measurable differences in refractive error and spherical power in some studies. Because the evidence is limited and refractive health is influenced by many genetic and environmental factors, this result should not be used to make assumptions about your vision.
This genotype is common in East Asian populations and present at varying frequencies in other global groups.
Understanding the SNP and its Location
The rs11601239 variant is a single-nucleotide polymorphism (SNP), which is a variation at a single position in the DNA sequence. This specific SNP is situated within the GRIA4 gene. In the context of human genetics, SNPs are the most common type of genetic variation and can sometimes serve as markers for specific traits or conditions. Researchers study these markers to understand how subtle differences in our genetic code contribute to complex physical characteristics, such as the shape of the eye and how it focuses light. By identifying where these variants sit in the genome, scientists can begin to map the biological pathways that influence vision development.
The Role of the GRIA4 Gene
The GRIA4 gene encodes a protein that is part of the glutamate receptor family. Glutamate receptors are essential for neurotransmission, the process by which nerve cells communicate with one another. While these receptors are most famously associated with brain function and synaptic plasticity, their presence in the retina suggests they may also play a role in ocular development and visual processing. Research into refractive error often highlights genes involved in neurotransmission, as the precise signaling required for eye growth and focus is a highly regulated biological process. Understanding how GRIA4 functions helps researchers hypothesize how genetic variations might influence the structural development of the eye over time.
Research Associations and Evidence Strength
Scientific evidence linking rs11601239 to refractive error is currently considered limited. Genome-wide association studies (GWAS) have identified this variant as having a statistical association with spherical equivalent refraction and spherical power. Recent studies, including those published in the British Journal of Ophthalmology, have observed associations between this SNP and ocular endophenotypes in children, such as the axial length to corneal radius ratio. However, it is important to note that these associations are based on statistical correlations observed in specific study populations. Because refractive error is a complex, multifactorial trait influenced by both genetics and environmental factors, the effect size of any single variant like rs11601239 is typically small. Further research is required to fully understand the biological mechanism and the clinical significance of this variant.
Population Frequency and Practical Considerations
This variant is noted to be common in East Asian populations. When interpreting genetic information, it is crucial to remember that population-specific data is a standard part of genomic research, as allele frequencies can vary significantly across different ancestral groups. Regarding what a reader can do with this information, it is important to understand that this is a research-level finding. This SNP is not a diagnostic tool, and it cannot predict an individual's specific refractive outcome. Genetic associations are meant to provide insight into the biological architecture of vision, not to guide personal medical decisions. If you have concerns about your vision or refractive error, you should consult with an optometrist or ophthalmologist for a comprehensive eye examination and professional clinical advice.
How common is this variant?
The rs11601239 variant is common in East Asian populations, where it has been frequently included in genetic association studies.
Frequently asked questions
Can this SNP predict if I will need glasses?
No, this SNP cannot predict your need for glasses. Refractive error is a complex trait influenced by many genes and environmental factors, and this variant only has a small statistical association.
Is rs11601239 a cause of myopia?
It is associated with refractive traits, but it is not considered a direct cause of myopia. It is one of many genetic markers that researchers study to understand the development of refractive error.
Should I get tested for this variant?
There is no clinical utility in testing for this variant. It is a research marker used in population studies and does not provide actionable medical information for individuals.
Where can I learn more about my vision health?
For information regarding your vision health, you should consult a qualified eye care professional. They can provide exams and advice tailored to your specific needs.
Sources & further reading
Educational information only, last refreshed 11/8/2026. Not medical advice — these associations describe population statistics, not individual predictions.
Curious what your genotype is for rs11601239?
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 — $29