MSH5 rs11754464: Understanding Reproductive Genetic Associations
The rs11754464 variant is a specific genetic marker located within the MSH5 gene. It has been identified in scientific literature as having a statistical association with the risk of non-obstructive azoospermia in certain male populations.
What each genotype means
Typical risk profile
This genotype represents the common version of the MSH5 variant. Research indicates that individuals with this genotype do not carry the specific genetic association linked to increased risk of non-obstructive azoospermia in the studied populations.
This is the most common genotype observed in the general population.
Increased risk association
Carrying one copy of the G allele is statistically associated with an increased risk of non-obstructive azoospermia in certain male populations. This finding is based on large-scale association studies, but it is not a diagnostic test for infertility and should be discussed with a fertility specialist.
This genotype is considered low-frequency, appearing in a small percentage of the population.
Elevated risk association
Carrying two copies of the G allele is associated with a higher statistical risk for non-obstructive azoospermia compared to those without the variant. While this association has been identified in research, it does not guarantee the presence of infertility and should be interpreted in the context of a full clinical evaluation by a healthcare provider.
This genotype is rare, occurring at a low frequency in the general population.
What is rs11754464?
The rs11754464 variant is a single nucleotide polymorphism (SNP) situated within the MSH5 gene. In genomics, a SNP represents a variation at a single position in the DNA sequence among individuals. This specific variant is cataloged in public databases as a marker of interest due to its potential influence on reproductive health. Because it is located within a gene involved in critical cellular processes, researchers study such variants to understand how minor changes in the genetic code might correlate with complex biological outcomes. It is important to note that the presence of a specific SNP does not function as a standalone diagnostic tool; rather, it serves as a data point in broader genetic research aimed at mapping the architecture of human fertility and reproductive development.
The Role of the MSH5 Gene
The MSH5 gene, which stands for mutS homolog 5, plays a fundamental role in meiosis, the specialized type of cell division that produces sperm and egg cells. Specifically, the MSH5 protein is essential for the proper pairing and recombination of homologous chromosomes. During meiosis, DNA double-strand breaks are intentionally created and repaired to ensure genetic diversity and the correct segregation of chromosomes. MSH5 acts as a key facilitator in this repair process. When the function of MSH5 is compromised, it can lead to meiotic failure, which may result in the production of non-viable gametes. Research into MSH5 is significant because it helps scientists understand the molecular mechanisms that underpin human fertility and the biological pathways that, when disrupted, contribute to conditions like spermatogenic failure.
Research and Evidence Strength
The association between MSH5 variants and non-obstructive azoospermia (NOA) is a subject of ongoing investigation. Studies have identified various mutations and variants within MSH5 that appear to correlate with impaired spermatogenesis. The evidence strength for rs11754464 is currently considered moderate, meaning that while statistical associations have been observed in specific study cohorts, these findings require further validation across diverse populations to establish a definitive causal link. Research often utilizes both human clinical data and animal models to observe how MSH5 dysfunction impacts testis development and sperm production. Because reproductive health is influenced by a complex interplay of many genes and environmental factors, the impact of any single variant like rs11754464 is rarely absolute. Scientists continue to refine these associations to better understand the genetic landscape of male infertility.
Population Frequency
The rs11754464 variant is classified as a low-frequency variant. This means that the specific allele associated with the condition is not common across the general global population. Frequency data can vary significantly depending on the ancestral background of the group being studied. Because it is a low-frequency variant, it is often harder to study in large-scale population genetics compared to common variants, as fewer individuals carry the specific genotype of interest. Researchers rely on large databases like gnomAD to estimate these frequencies, but data for specific rare variants may be limited for certain underrepresented populations. Understanding these frequency distributions is essential for researchers to determine whether a variant is a rare driver of a condition or a benign polymorphism that happens to appear more frequently in specific geographic or ancestral groups.
Interpreting Genetic Information
Genetic information regarding variants like rs11754464 is intended for educational and research purposes. It is crucial to understand that identifying a variant in your genetic profile does not constitute a medical diagnosis. Reproductive health is highly complex, and the presence of a specific genotype does not guarantee any particular health outcome. If you are concerned about fertility or reproductive health, the most appropriate course of action is to consult with a qualified healthcare provider, such as a reproductive endocrinologist or a genetic counselor. These professionals can provide context based on your full medical history, physical examinations, and clinical testing. Never use genetic data to make independent medical decisions or to alter any prescribed treatments without first discussing the information with your clinician or pharmacist.
How common is this variant?
The rs11754464 variant is characterized as a low-frequency variant, with its prevalence varying across different ancestral populations.
Frequently asked questions
What is non-obstructive azoospermia?
Non-obstructive azoospermia is a condition where the testes are unable to produce sperm, not because of a physical blockage, but due to issues with the production process itself. It is a complex condition that can have various genetic, hormonal, or environmental causes.
Can I use this information to diagnose infertility?
No, genetic variants like rs11754464 cannot be used for self-diagnosis. Infertility is a multifactorial condition, and a clinical diagnosis requires a comprehensive evaluation by a medical professional.
Is MSH5 the only gene involved in sperm production?
No, spermatogenesis is a highly complex biological process involving hundreds of genes. MSH5 is just one of many genes that contribute to the successful development of sperm cells.
Where can I find more information about my own genetic data?
If you have received genetic testing results, you should discuss them with a certified genetic counselor or your primary care physician. They can help interpret the findings in the context of your personal and family health history.
Sources & further reading
Educational information only, last refreshed 10/8/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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