BRAT1 rs869312931: Understanding This Rare Genetic Variant
The rs869312931 variant is a rare genetic change located within the BRAT1 gene. It is classified in clinical databases as pathogenic and is associated with inborn genetic disorders affecting neurological development.
What each genotype means
Typical genetic profile
This is the most common genotype observed in the general population for this specific location in the BRAT1 gene. It is considered the reference or wild-type sequence, meaning it does not carry the specific pathogenic change associated with this variant record.
This is the most common genotype found across all global populations.
Carrier of rare variant
This genotype indicates that you carry one copy of the rare variant associated with certain inborn genetic diseases. Because BRAT1-related conditions typically follow an autosomal recessive inheritance pattern, carrying a single copy is generally not expected to cause the severe clinical symptoms associated with the condition, though you should consult with a genetic counselor to understand your specific risk profile.
This genotype is rare in the general population.
Pathogenic variant carrier
This genotype indicates that you carry two copies of this specific variant, which is classified as pathogenic in clinical databases. This variant is linked to severe inborn genetic diseases, including infantile epileptic encephalopathy and other neurodevelopmental disorders; please discuss these findings with a medical geneticist or clinician for appropriate clinical evaluation.
This genotype is extremely rare in the general population.
What is rs869312931?
The identifier rs869312931 refers to a specific single nucleotide polymorphism (SNP) located on chromosome 7. In the context of the human genome, this variant represents a change at a precise position within the BRAT1 gene. Genetic variants like this are identified through large-scale sequencing studies and are cataloged in databases such as dbSNP to help researchers track their presence across different populations. Because this variant is classified as rare, it is not commonly found in the general population. When researchers study such variants, they look at how the specific change in the DNA sequence might alter the function of the resulting protein. Understanding the location and nature of this variant is the first step in determining how it may contribute to the biological processes that lead to specific health conditions.
The Role of the BRAT1 Gene
The BRAT1 gene, which stands for BRCA1-associated protein required for ATM activation-1, plays a critical role in maintaining genomic stability. It is essential for DNA repair processes, helping cells fix damage to their genetic material. When the BRAT1 gene functions correctly, it supports the activation of the ATM protein, a key player in the cellular response to DNA damage. Because of its fundamental role in protecting the integrity of the genome, mutations or variants that disrupt the normal function of BRAT1 can have significant biological consequences. Research has shown that biallelic variants—where both copies of the gene are affected—are linked to a spectrum of neurodevelopmental disorders. These conditions can manifest as intellectual disability, epilepsy, speech delays, and motor impairments, highlighting the importance of this gene in early brain development and ongoing neurological health.
Research and Clinical Evidence
Clinical databases and research studies have categorized rs869312931 as a pathogenic variant. This classification is based on evidence linking it to inborn genetic diseases. In clinical genetics, a pathogenic classification means there is substantial evidence that the variant is responsible for causing a specific disorder. Research into BRAT1-related disorders has expanded significantly, with studies identifying various mutations that lead to conditions ranging from severe neonatal-onset encephalopathy with rigidity and seizures (RMFSL) to milder forms of neurodevelopmental issues like nonprogressive cerebellar ataxia. The evidence for these associations is derived from clinical observations of affected individuals and their families, often confirmed through whole-exome sequencing. While the evidence for the pathogenicity of this specific variant is considered moderate to strong in clinical contexts, it is important to note that clinical presentation can vary significantly between individuals, even those with similar genetic findings.
Population Frequency and Interpretation
The rs869312931 variant is documented as rare across global populations. In genetic research, a variant is considered rare if it appears at a very low frequency in the general population. Because it is so uncommon, most individuals will not carry this variant. When interpreting genetic information, it is vital to distinguish between the presence of a variant and the manifestation of a disease. Genetic testing results should always be interpreted by a qualified healthcare professional or a genetic counselor who can place the findings in the context of an individual's personal and family medical history. This information is intended for educational purposes and should not be used to diagnose or treat any medical condition. If you have concerns about your genetic health or the results of a genetic test, please consult with a clinician to discuss the implications and appropriate next steps.
How common is this variant?
The rs869312931 variant is classified as rare, meaning it is found at a very low frequency across global populations.
Frequently asked questions
What does it mean if a variant is classified as pathogenic?
A pathogenic classification means that there is strong scientific and clinical evidence that the variant is associated with a specific disease or health condition. It indicates that the change in the DNA sequence is likely to disrupt the normal function of the gene.
Can I use this information to diagnose myself?
No. Genetic information is complex and must be interpreted by a medical professional who can consider your full clinical picture. Never use genetic data to self-diagnose or make medical decisions without consulting a doctor.
Are all BRAT1 variants harmful?
Not all variants are harmful. Many genetic variations are benign and have no impact on health. However, specific variants in the BRAT1 gene have been linked to serious neurodevelopmental disorders, which is why they are studied in clinical settings.
Where can I find more information about my specific genetic results?
If you have received genetic testing results, the best source of information is the laboratory that performed the test or a genetic counselor. They can provide a detailed report and explain what the findings mean for your specific situation.
Sources & further reading
Educational information only, last refreshed 10/5/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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