GABRG2 rs7349332: What Your Genotype Means
The rs7349332 variant is a genetic marker located within the GABRG2 gene, which plays a critical role in brain signaling. This variant is associated with altered GABA receptor function and has been studied in the context of epilepsy-related phenotypes.
What each genotype means
Common genetic profile
This genotype represents the most common version of this specific genetic marker found in the general population. There is no current evidence suggesting this specific variation significantly alters GABA receptor function or increases epilepsy risk on its own. As with all genetic findings, this should be viewed as part of your overall health context rather than a standalone indicator of risk.
This is the most frequent genotype observed across most global populations.
Common genetic profile
This genotype represents a common variation at this location in the GABRG2 gene. Current scientific literature does not identify this specific combination as a primary driver of epilepsy or altered GABA receptor function. You should continue to follow standard health guidelines and consult with a healthcare provider regarding any personal or family history of neurological conditions.
This genotype is commonly found in diverse populations worldwide.
Common genetic profile
This genotype is a standard variation for this marker and is not associated with the rare, pathogenic mutations in GABRG2 that are linked to epilepsy or developmental disorders. It is considered a normal part of human genetic diversity. No specific medical action or concern is indicated by this result alone.
This genotype is frequently observed in the general population.
Understanding the rs7349332 Variant
The rs7349332 variant is a single nucleotide polymorphism (SNP) situated within the GABRG2 gene. In genetics, a SNP represents a variation at a single position in the DNA sequence among individuals. This specific variant is located in a region of the genome that influences the expression or function of the GABRG2 gene. While many SNPs are neutral, researchers investigate specific variants like rs7349332 to determine if they correlate with observable biological differences or health conditions. Because this variant is common in the general population, it serves as a point of interest for scientists studying the genetic architecture of neurological health. It is important to note that the presence of a specific genotype at this location does not guarantee a particular health outcome, as complex traits like epilepsy are influenced by a combination of multiple genetic factors, environmental triggers, and developmental history.
The Role of the GABRG2 Gene
The GABRG2 gene provides instructions for creating the gamma-2 subunit of the GABA-A receptor. GABA-A receptors are essential components of the central nervous system, acting as the primary inhibitory neurotransmitter system in the brain. By allowing chloride ions to enter neurons, these receptors help dampen electrical activity, effectively acting as a 'brake' on the brain's signaling pathways. The gamma-2 subunit is particularly important because it is required for the proper trafficking and clustering of these receptors at synapses, as well as for the receptor's sensitivity to certain medications like benzodiazepines. When the GABRG2 gene is altered, it can lead to a reduction in the efficiency of these inhibitory signals. Research has shown that significant mutations in this gene can lead to a spectrum of epilepsy syndromes, ranging from mild febrile seizures to more severe conditions like Dravet syndrome.
Research and Evidence Strength
The evidence linking GABRG2 to epilepsy is well-established, particularly regarding rare, pathogenic mutations that cause loss of function or dominant-negative effects. However, the association between the common variant rs7349332 and specific clinical outcomes is considered to have moderate evidence strength. While some studies explore how common variants in this gene might influence susceptibility to seizure disorders, the findings are often nuanced and depend on the broader genetic background of the individual. It is crucial to distinguish between rare, highly penetrant mutations that directly cause epilepsy and common variants that may only slightly modulate risk. Current research continues to investigate how these common variations interact with other genes to influence neurological health. Because the evidence is not definitive for a direct diagnostic link, this information should be viewed as a piece of a much larger, complex biological puzzle rather than a predictive medical tool.
Population Frequency
The rs7349332 variant is classified as a common variant, meaning it is found at a significant frequency across diverse human populations. Because it is common, it is present in many healthy individuals who do not exhibit any epilepsy-related phenotypes. This high frequency suggests that the variant is not a rare, high-risk mutation, but rather a normal part of human genetic diversity. When a variant is common, it is often studied to see if it acts as a modifier of risk rather than a primary cause of disease. Researchers use large-scale genomic databases to track these frequencies across different ancestries, which helps in understanding how genetic background might influence the impact of the variant. If you are interested in your own genetic data, it is helpful to remember that common variants are shared by millions of people worldwide and are rarely sufficient on their own to determine health outcomes.
Interpreting Your Genetic Information
Accessing information about your genetic variants can be educational, but it is important to approach this data with a clear understanding of its limitations. A genotype at the rs7349332 locus is not a medical diagnosis and cannot predict whether an individual will develop a seizure disorder. Because epilepsy is a complex condition influenced by many genes and environmental factors, a single SNP provides very little information in isolation. If you have concerns about your neurological health or a family history of seizures, the most appropriate step is to consult with a qualified healthcare professional or a genetic counselor. They can provide context based on your personal and family medical history, which is far more informative than a single genetic marker. Never use genetic data to make decisions about medications or treatments; always discuss any health-related questions or concerns with your clinician or pharmacist.
How common is this variant?
The rs7349332 variant is a common polymorphism, with its various genotypes appearing frequently across diverse global populations.
Frequently asked questions
Is rs7349332 a cause of epilepsy?
No, rs7349332 is a common genetic variant and is not considered a direct cause of epilepsy. While the GABRG2 gene is involved in epilepsy, rare, specific mutations are typically required to cause the condition, rather than common variants like this one.
Should I be worried if I have the G allele for rs7349332?
There is no reason for concern. This variant is common in the general population, and most people who carry the G allele do not have any neurological conditions. It is a normal part of human genetic variation.
Can I use this information to change my medication?
No. You should never change your medication based on genetic information found online. Always consult with your doctor or pharmacist before making any changes to your prescribed treatments.
Where can I find more information about GABRG2?
You can find reliable information about the GABRG2 gene through resources like MedlinePlus Genetics or the NCBI Gene database. These sites provide comprehensive, peer-reviewed summaries of gene functions and their roles in health.
Sources & further reading
Educational information only, last refreshed 9/20/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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This variant in the GABRG2 gene is associated with variations in response to certain anticonvulsant medications and epilepsy susceptibility.
This variant is located in the GABRG2 gene, which encodes the gamma-2 subunit of the GABA-A receptor; variants in this gene are associated with a spectrum of epilepsy syndromes.
Linked to GABA-A receptor subunit dysfunction, a known mechanism for inherited epilepsy syndromes.
A common variant in GABRG2, a gene encoding a GABA-A receptor subunit linked to various epilepsy phenotypes including febrile seizures and GEFS+.
Variant in GABRG2, a gene where mutations can alter GABA-A receptor function and influence seizure thresholds.
Mutations in GABRG2 are linked to a spectrum of epilepsy ranging from simple febrile seizures to severe developmental and epileptic encephalopathies.