RNF212 rs3741504: Role in Meiotic Recombination
The rs3741504 polymorphism is a common single-nucleotide variant located within the RNF212 gene on human chromosome 4. Scientific research associates genetic variation at this locus with subtle differences in genome-wide meiotic recombination rates and downstream fertility metrics. However, its individual clinical impact remains limited and exploratory rather than diagnostic.
What each genotype means
Baseline meiotic recombination rate
You carry two copies of the C allele in the RNF212 gene. In population studies, this genotype is associated with baseline levels of meiotic crossing-over and genome-wide recombination rates. Current evidence does not show a strong individual clinical impact on fertility, and the biological effects of this locus are often sex-dimorphic in population-level research.
Found in approximately 45% to 55% of individuals of European ancestry and common globally.
Altered meiotic recombination rate
You carry one copy of the T allele associated with variations in the meiotic crossover rate. Studies demonstrate that this variant influences the rate at which maternal and paternal chromosomes exchange genetic material during gamete formation, with opposite directions of effect observed between males and females. The overall effect on personal reproductive health or fertility is considered limited and non-diagnostic.
Carried by approximately 40% to 45% of European individuals, with varying prevalence across worldwide ancestries.
Modified meiotic recombination rate
You carry two copies of the T allele in the RNF212 gene. In genome-wide association studies, this genotype has been linked to distinct shifts in genome-wide recombination rates during meiosis compared to the baseline CC genotype. These population-scale statistical findings reflect subtle shifts in cellular chromosome dynamics rather than a direct predictor of individual infertility.
Carried by roughly 5% to 12% of individuals in European-descent populations.
Genomic Location and Variant Characteristics
The single-nucleotide polymorphism rs3741504 is located on chromosome 4 within the ring finger protein 212 (RNF212) gene region. Standard human reference catalogs, such as [NCBI dbSNP](https://www.ncbi.nlm.nih.gov/snp/rs3741504), document this variant as an exchange of nucleotides (C and T alleles). In meiotic biology, sequence variations across the 4p16.3 chromosomal band have long attracted attention because they coincide with quantitative trait loci linked to crossover biology. Because rs3741504 is situated within a tightly regulated chromosomal segment, geneticists often study it to understand how natural variations in meiotic genes modulate the frequency and distribution of chromosomal crossing-over events during gamete production.
Biological Role of the RNF212 Gene
The RNF212 gene encodes a RING-finger protein that functions as an E3 SUMO ligase localized to the synaptonemal complex during meiosis, as described in [GeneCards RNF212 Annotation](https://www.genecards.org/card/RNF212). During the formation of sperm and egg cells, homologous chromosomes undergo meiotic recombination, exchanging segments of DNA to ensure proper segregation and generate genetic diversity. Research published in [Reynolds et al., PMC4245152](https://pmc.ncbi.nlm.nih.gov/articles/PMC4245152/) shows that RNF212 acts as a dosage-sensitive regulator of meiotic crossing-over, helping couple physical chromosome pairing with the stabilization of crossover-specific recombination complexes. Alterations in RNF212 expression or function can therefore influence the total count of genetic crossovers occurring across an individual's genome.
Research Findings on Recombination and Fertility
Landmark genome-wide studies, including seminal work by [Kong et al., 2008, Science](https://www.science.org/doi/10.1126/science.1152422), identified common genetic variants in RNF212 as primary determinants of genome-wide recombination rate variations in humans. Furthermore, investigations into reproductive health have examined whether these variations influence reproductive traits or male and female fertility parameters. In male reproductive studies, such as the screening detailed in [MDPI International Journal of Molecular Sciences](https://www.mdpi.com/1422-0067/24/1/524), peripheral meiotic genes were evaluated for differences between fertile and infertile cohorts. While variations across RNF212 correlate with slight shifts in recombination rates and downstream reproductive parameters, the evidence directly linking rs3741504 to severe reproductive impairment remains limited, showing mild statistical associations rather than high penetrance.
Population Frequency and Allelic Patterns
The rs3741504 variant is a common polymorphism observed across diverse human ancestries. In populations of European descent, the minor allele frequency typically ranges between approximately 0.25 and 0.35, meaning that a significant portion of individuals carry at least one copy of the alternative allele. Allele and genotype frequencies can differ moderately across other continental groups according to global sequencing repositories like the [GWAS Catalog](https://www.ebi.ac.uk/gwas/search?query=rs3741504). Because both common alleles are widespread and preserved throughout evolution, carrying either allele is considered a normal, standard facet of human genetic variation rather than a pathogenic disruption.
Interpreting Your Results and Practical Perspective
Discovering your rs3741504 genotype provides insight into fundamental meiotic biology rather than actionable medical outcomes. This variant reflects slight, population-level differences in how DNA crossovers occur during gametogenesis and does not diagnose infertility or predict personal reproductive outcomes. Genetic testing panels for clinical reproductive evaluation focus primarily on major chromosomal anomalies, monogenic disruptions, or microdeletions rather than subtle recombination rate QTLs. Anyone with questions regarding family planning, conception, or reproductive health should seek guidance from qualified healthcare professionals and fertility specialists rather than relying on common single-nucleotide polymorphisms.
How common is this variant?
The minor allele frequency for rs3741504 ranges between approximately 0.25 and 0.35 in European populations, with both common alleles frequently represented across diverse global cohorts.
Frequently asked questions
Does my rs3741504 genotype cause infertility?
No, having a specific genotype at rs3741504 does not cause or diagnose infertility. While researchers study RNF212 variants for subtle influences on meiotic recombination rates, these variations represent common population diversity and do not determine clinical reproductive failure.
What is the function of the RNF212 gene?
RNF212 encodes an E3 SUMO ligase that localizes to the synaptonemal complex during meiosis. It plays an essential role in stabilizing crossover-specific protein complexes, thereby regulating the number and placement of genetic crossovers when egg and sperm cells are formed.
Can I alter my meiotic recombination rate with lifestyle changes?
Meiotic recombination rates are primarily determined by an individual's underlying genetic architecture and biological sex. There are no known lifestyle modifications, diets, or therapies that can intentionally modulate genome-wide recombination rates.
Should I discuss rs3741504 results with my doctor?
Because rs3741504 is a research-grade quantitative trait variant with limited clinical evidence, medical providers do not use it to guide medical decisions or fertility workups. If you have concerns about fertility or pregnancy, talk with a reproductive specialist who can evaluate validated clinical indicators.
Sources & further reading
Educational information only, last refreshed 9/14/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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