SLC26A4 rs111033314: Understanding Genetic Hearing Loss Associations
The rs111033314 variant is a specific genetic change located within the SLC26A4 gene. It is studied for its potential associations with Pendred syndrome and non-syndromic hearing loss, conditions that affect inner ear function and sometimes thyroid health.
What each genotype means
Typical SLC26A4 profile
This genotype represents the most common sequence found in the general population for this specific location in the SLC26A4 gene. It is not associated with the increased risk of Pendred syndrome or non-syndromic hearing loss linked to pathogenic variants in this gene.
This is the most common genotype observed across all global populations.
Carrier of variant allele
You carry one copy of the variant allele and one typical copy. Because SLC26A4-related conditions are typically inherited in an autosomal recessive pattern, carriers generally do not exhibit symptoms of Pendred syndrome or hearing loss, though you should consult a genetic counselor to understand reproductive implications.
This genotype is rare, occurring at low frequencies in the general population.
Potential increased clinical risk
This genotype indicates the presence of two copies of the variant allele. Research links homozygous variants in SLC26A4 to autosomal recessive conditions including Pendred syndrome and non-syndromic hearing loss with enlarged vestibular aqueduct; please discuss these findings with a clinical geneticist or healthcare provider to determine if they are relevant to your health status.
This genotype is very rare in the general population.
What is the rs111033314 Variant?
The rs111033314 variant is a single nucleotide polymorphism (SNP) situated within the SLC26A4 gene. In genetics, a SNP represents a variation at a single position in the DNA sequence among individuals. The SLC26A4 gene provides instructions for making a protein called pendrin, which acts as an anion exchanger, moving negatively charged ions like chloride, iodide, and bicarbonate across cell membranes. This protein is particularly active in the inner ear and the thyroid gland. When a variant occurs in this gene, it may alter the structure or function of the pendrin protein, potentially disrupting the delicate balance of ions required for normal hearing and thyroid hormone production. Researchers track these specific variants to understand how they contribute to inherited conditions, particularly those involving sensorineural hearing loss and structural abnormalities of the inner ear, such as an enlarged vestibular aqueduct.
The Role of the SLC26A4 Gene
The SLC26A4 gene is essential for maintaining the fluid environment of the inner ear, which is necessary for the sensory cells to convert sound vibrations into nerve impulses. Beyond the ear, pendrin is also expressed in the thyroid, where it plays a role in the transport of iodide, a critical component of thyroid hormones. Mutations in this gene are well-documented as a cause of autosomal recessive disorders. In these cases, an individual typically needs to inherit two copies of a pathogenic variant—one from each parent—to manifest the clinical features of Pendred syndrome or DFNB4, a form of non-syndromic hearing loss. Because the gene is involved in multiple physiological processes, the clinical presentation can vary significantly between individuals, even those with similar genetic profiles, highlighting the complexity of how this gene influences human health.
Research and Clinical Associations
Scientific literature identifies SLC26A4 as a major contributor to genetic hearing loss. Research indicates that biallelic mutations (mutations on both copies of the gene) are strongly linked to Pendred syndrome, which combines hearing loss with thyroid goiter. Non-syndromic hearing loss, specifically DFNB4, is also associated with variants in this gene. The evidence strength for the involvement of SLC26A4 in these conditions is considered moderate to high in clinical genetics. However, the specific impact of the rs111033314 variant requires careful interpretation. While some variants in this gene are clearly pathogenic, others may have uncertain significance or require specific environmental or genetic contexts to manifest symptoms. It is important to note that not everyone with a variant in this gene will develop the same symptoms, and clinical diagnosis relies on a combination of genetic testing, audiological evaluation, and imaging of the inner ear.
Population Frequency and Interpretation
The rs111033314 variant is classified as rare in the general population. Genetic databases like gnomAD provide frequency data that help researchers determine how often a specific variant appears across different ancestral groups. Because this variant is rare, it is not commonly found in the general public, which makes studying its specific clinical impact more challenging. When a variant is rare, it is often difficult to establish a definitive link to a disease without large-scale studies or functional assays. Readers should understand that the presence of a rare variant does not automatically imply a diagnosis. Genetic information is only one piece of a larger clinical puzzle. If you have concerns about hearing loss or genetic conditions, it is essential to consult with a medical geneticist or a qualified healthcare provider who can interpret these results in the context of your personal and family medical history.
Navigating Genetic Information
Accessing genetic data can be empowering, but it is vital to use this information responsibly. A genetic variant is not a medical diagnosis. Many factors, including other genes and environmental influences, contribute to the development of hearing loss or thyroid conditions. You cannot use this information to self-diagnose or make medical decisions. If you have received a report mentioning rs111033314, the most appropriate step is to discuss the findings with a genetic counselor or your primary care physician. They can help you understand the clinical relevance of the variant, determine if further testing is necessary for you or your family members, and provide guidance based on current medical standards. Avoid making changes to any prescribed treatments or health routines based solely on genetic data without professional medical oversight.
How common is this variant?
The rs111033314 variant is documented as rare across global populations, meaning it is found in a very small percentage of individuals.
Frequently asked questions
Is rs111033314 a cause of deafness?
Variants in the SLC26A4 gene are known to be associated with hearing loss. However, whether this specific variant is the cause of deafness in an individual depends on many factors, including the presence of other mutations and clinical evaluation.
What is Pendred syndrome?
Pendred syndrome is an inherited condition that causes early-onset hearing loss and often leads to the development of a goiter, which is an enlargement of the thyroid gland. It is typically caused by mutations in the SLC26A4 gene.
Should I be worried if I have this variant?
Finding a rare variant does not mean you have a disease. You should discuss the results with a genetic counselor or doctor who can explain what the finding means for your specific health situation.
Can I fix my SLC26A4 variant?
There is currently no way to 'fix' or change a genetic variant. Medical management for conditions associated with this gene focuses on treating the symptoms, such as managing hearing loss or monitoring thyroid function.
Sources & further reading
Educational information only, last refreshed 9/26/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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