TEX15 rs6051545: Understanding Genetic Links to Male Fertility
The rs6051545 variant is a missense polymorphism located within the TEX15 gene, which plays a critical role in male germ cell development. Research has investigated its potential association with spermatogenic failure, including conditions such as non-obstructive azoospermia and oligospermia.
What each genotype means
Typical TEX15 genotype
This is the most common genotype for this variant in the general population. It does not carry the minor allele associated with potential impacts on male fertility markers like sperm count.
Carried by the vast majority of individuals, with a minor allele frequency of approximately 0.04 in European populations.
Heterozygous for TEX15 variant
You carry one copy of the minor allele for this variant. While TEX15 is essential for DNA repair during sperm development, the clinical significance of this specific missense variant remains limited, and it is not a diagnostic indicator of infertility.
Carried by roughly 8% of people of European ancestry, based on a minor allele frequency of approximately 0.04.
Homozygous for TEX15 variant
You carry two copies of the minor allele. Research into TEX15 variants suggests associations with non-obstructive azoospermia and oligospermia, but evidence for this specific variant is limited and does not constitute a medical diagnosis of infertility.
This genotype is rare, occurring in approximately 0.16% of European populations based on the reported minor allele frequency.
What is rs6051545?
The variant rs6051545 is a single nucleotide polymorphism (SNP) situated in the TEX15 gene. In genetics, a SNP represents a variation at a single position in the DNA sequence among individuals. This specific variant is classified as a missense polymorphism, meaning the change in the DNA sequence results in a different amino acid being incorporated into the protein produced by the gene. Because this change occurs within a gene essential for reproductive processes, researchers have focused on whether this alteration might influence the protein's function or stability. Located on an autosome, this variant is inherited according to standard Mendelian patterns, and its presence is being studied to determine if it contributes to variations in male reproductive health across different populations.
The Role of the TEX15 Gene
The TEX15 gene, which stands for Testis-Expressed 15, encodes a protein that is highly specialized for function within the testes. It is essential for the complex process of spermatogenesis, specifically during male meiosis. During this phase, the gene product is involved in critical tasks such as chromosome synapsis, meiotic recombination, and the repair of DNA double-strand breaks. Furthermore, TEX15 is known to interact with the PIWI-interacting RNA pathway, helping to silence transposable elements that could otherwise disrupt germ cell development. Studies in animal models have demonstrated that the complete loss of TEX15 function leads to meiotic arrest and sterility. Given these vital roles, any genetic variation that alters the structure or expression of the TEX15 protein is of significant interest to reproductive biologists studying the molecular basis of male infertility.
Research and Evidence Strength
The association between rs6051545 and male infertility traits, such as non-obstructive azoospermia (the absence of sperm in the ejaculate) and oligospermia (low sperm count), is currently supported by limited evidence. While high-penetrance, rare loss-of-function mutations in TEX15 are well-documented causes of severe spermatogenic failure, the role of common polymorphisms like rs6051545 is less clear. Some case-control studies have suggested a potential link between certain TEX15 variants and susceptibility to spermatogenic failure in specific populations, such as the Chinese Han or Iranian cohorts. However, these findings are not always consistent across different ethnic groups. Because the evidence is considered limited and potentially ancestry-specific, it is important to view these associations as statistical observations rather than definitive diagnostic markers for infertility.
Population Frequency
The prevalence of the rs6051545 variant varies across different global populations. According to available genomic data, the minor allele frequency for this variant is approximately 0.04 in European populations. This indicates that the variant is relatively uncommon but present in a significant portion of the population. Because frequency data can differ substantially between ancestral groups, researchers emphasize the importance of considering population-specific context when evaluating the potential impact of this SNP. The relatively low frequency of the minor allele suggests that it is not a primary driver of infertility in the general population, but rather a factor that may contribute to risk in specific genetic backgrounds or in combination with other environmental and genetic influences.
Interpreting Your Genetic Information
It is crucial to understand that having a specific genotype for rs6051545 does not provide a medical diagnosis. Genetic associations with complex traits like male fertility are often influenced by a wide array of factors, including other genes, environmental exposures, and lifestyle choices. If you have concerns regarding fertility, this information should not be used to make health decisions or to predict reproductive outcomes. Instead, consult with a qualified healthcare provider, such as a reproductive endocrinologist or a genetic counselor. These professionals can provide context based on your full clinical history and perform appropriate diagnostic testing. Genetic information is a tool for scientific understanding, but it cannot replace a comprehensive medical evaluation conducted by a specialist.
How common is this variant?
The minor allele frequency for rs6051545 is approximately 0.04 in European populations, making it a relatively uncommon variant.
Frequently asked questions
Does having the rs6051545 variant mean I am infertile?
No, having this variant does not mean you are infertile. It is a common genetic variation that has been studied for its potential association with sperm production, but it is not a diagnostic test for infertility.
Can I use this SNP to predict my chances of having children?
No, this SNP cannot be used to predict reproductive outcomes. Male fertility is a complex trait influenced by many genetic and environmental factors that are not captured by a single variant.
Should I get tested for TEX15 variants?
Routine testing for this variant is not recommended. If you have concerns about fertility, you should speak with a fertility specialist who can order appropriate clinical tests.
Is the association with infertility the same for everyone?
No, research suggests that genetic associations can vary significantly between different ancestral populations. Findings in one group may not apply to others.
Sources & further reading
Educational information only, last refreshed 9/29/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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A functional variant in testis-expressed protein 15 linked to spermatogenic failure and susceptibility to male factor infertility.
A coding variant in the testis-expressed gene TEX15 associated with DNA double-strand break repair during meiosis and susceptibility to non-obstructive azoospermia or severe oligospermia.