KCTD10 rs7313797: What Your Genotype Means
The genetic variant rs7313797 is a common single-nucleotide polymorphism located within the KCTD10 gene. Research has identified this specific marker as having a statistically significant association with variations in human sleep duration across diverse ancestral groups.
What each genotype means
Typical sleep duration profile
You carry two copies of the C reference allele at rs7313797 within the KCTD10 gene region. In large genome-wide association studies across European, African, and East Asian ancestries, this genotype is not associated with an increased genetic tendency toward short habitual sleep. This finding represents a small population-level statistical correlation and does not determine your personal sleep patterns or overall sleep quality.
Carried by approximately 40% to 65% of individuals across European, African, and East Asian populations.
Mildly increased short sleep tendency
You carry one copy of the T allele at rs7313797 in the KCTD10 locus. Multi-ancestry genetic studies have linked this allele to a slightly higher likelihood of reporting habitual short sleep (typically six hours or less per night) as well as subtle differences in cardiometabolic markers. Because this variant exerts a very modest effect size among many complex environmental and genetic factors, it does not mean you will inevitably experience insufficient sleep.
Carried by roughly 35% to 45% of individuals across diverse global ancestral groups.
Moderately increased short sleep tendency
You carry two copies of the T allele at rs7313797 in the KCTD10 locus. In cross-population meta-analyses, carrying two copies of this variant is modestly associated with a higher likelihood of self-reported shorter sleep duration compared to non-carriers. This represents a minor polygenic tendency rather than a diagnosis, and standard healthy sleep habits remain the primary determinant of overall rest and wellbeing.
Carried by roughly 5% to 12% of individuals globally, depending on specific ancestral background.
Understanding the rs7313797 Variant
The variant rs7313797 is a single-nucleotide polymorphism (SNP) situated on chromosome 12. In the context of human genetics, a SNP represents a variation at a single position in the DNA sequence among individuals. This particular variant is located within the KCTD10 gene, which stands for Potassium Channel Tetramerization Domain Containing 10. Because it is located in an intronic region—a non-coding part of the gene—it does not directly alter the protein sequence of KCTD10. Instead, researchers study such variants to understand how they might influence gene expression or regulatory processes. Geneticists use these markers to map complex traits, as they can serve as signposts for biological pathways that influence human physiology, including the regulation of circadian rhythms and sleep patterns.
The Role of the KCTD10 Gene
The KCTD10 gene encodes a protein that functions as a substrate adaptor for the CUL3 E3 ubiquitin ligase complex. Recent scientific research has highlighted its critical role in maintaining genome stability by sensing and resolving transcription-replication conflicts (TRCs). These conflicts occur when the machinery responsible for DNA replication encounters the machinery responsible for gene transcription, potentially leading to DNA damage. By promoting the remodeling of these complexes, KCTD10 helps ensure that cells can replicate their DNA efficiently. Beyond its role in DNA maintenance, KCTD10 has been investigated for its potential involvement in embryonic development and ciliary function. While its primary known function is cellular, its broad influence on biological stability makes it a subject of interest in studies exploring how genetic variation might influence complex human traits.
Research Associations and Evidence
The association between rs7313797 and sleep duration has been identified through large-scale genome-wide association studies (GWAS). Notably, this variant has demonstrated consistent nominal significance across multiple ancestral populations, including African, East Asian, and European cohorts. While many genetic signals for sleep duration are specific to one population, rs7313797 is recognized for its cross-population consistency. However, it is important to note that while the statistical association is robust, the effect size of any single SNP on a complex trait like sleep duration is typically very small. Sleep is a polygenic trait, meaning it is influenced by hundreds of genetic variants, environmental factors, and lifestyle choices. Therefore, this variant should be viewed as one small piece of a much larger, complex biological puzzle rather than a definitive predictor of an individual's sleep habits.
Population Frequency and Interpretation
The rs7313797 variant is considered common, meaning it is found at a high frequency across various global populations. Because it is a common variant, most people carry at least one copy of the minor allele. When interpreting genetic information, it is essential to understand that having a specific genotype does not equate to a medical diagnosis or a fixed biological outcome. Genetic associations are based on population-level data and do not account for the unique interplay of an individual's entire genome, environment, or personal health history. This information is intended for educational purposes to help the public understand how genetic research is conducted. It cannot be used to predict personal sleep quality or to diagnose sleep disorders. If you have concerns about your sleep patterns, it is always best to consult with a qualified healthcare professional.
How common is this variant?
The rs7313797 variant is a common genetic marker, with its genotypes appearing at varying frequencies across global ancestral populations.
Frequently asked questions
Does my genotype for rs7313797 mean I have a sleep disorder?
No. This variant is associated with variations in sleep duration at a population level, not with the presence or absence of a clinical sleep disorder. Sleep disorders are complex conditions that require evaluation by a medical professional.
Can I use this information to change my sleep schedule?
Genetic information regarding sleep duration is for educational purposes only. You should not use this data to make changes to your health or sleep habits; please consult a doctor for personalized medical advice.
Why is this variant found in different populations?
Many common genetic variants are shared across human populations due to our shared evolutionary history. The fact that rs7313797 shows consistent associations across different ancestries suggests it may be linked to fundamental biological processes.
Is KCTD10 involved in other health conditions?
Research is ongoing regarding the role of KCTD10. While it has been studied in the context of DNA replication and development, it is not currently used as a diagnostic marker for specific diseases in clinical practice.
Sources & further reading
Educational information only, last refreshed 10/28/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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