PRRC2A rs10852344: Genetic Variations and Menopause Age
The single nucleotide polymorphism rs10852344 is an intronic variant mapped to the PRRC2A gene within the major histocompatibility complex (MHC) class III region on chromosome 6. In genome-wide association studies, this locus has shown statistical associations with the timing of female reproductive aging and age at natural menopause. While research links variation in this genomic region to slight shifts in menopausal timing, its individual clinical predictive value remains limited.
What each genotype means
| Genotype | What the research suggests | Reading |
|---|---|---|
| CC | Homozygous for the common cytosine allele at rs10852344. In epidemiological studies, this baseline genotype represents the standard reference profile for natural menopause timing in evaluated populations. It does not confer an elevated or reduced risk for early reproductive decline. | Informational |
| CT | Heterozygous carrier of one C allele and one T allele at rs10852344. Individuals with this genotype carry one copy of the variant allele associated in cohort studies with subtle statistical shifts in age at natural menopause. This minor statistical association has negligible clinical impact when viewed in isolation. | Informational |
| TT | Homozygous for the thymine allele at rs10852344. Cohort studies examine this genotype in the context of cumulative polygenic contributions to reproductive aging and menopausal onset. Like heterozygous carriers, individuals with this genotype experience only small statistical variations that do not reliably predict personal menopausal timing. | Informational |
Genomic Location and Variant Characteristics
The variant rs10852344 represents a single base substitution located on human chromosome 6 (6p21.33). It is positioned within the genomic boundary of the PRRC2A gene, historically designated as BAT2 (HLA-B associated transcript 2). This locus resides in the densely packed MHC class III region, a genomic neighborhood characterized by high gene density and extensive linkage disequilibrium. Because rs10852344 falls within non-coding intronic DNA, it does not directly alter the primary amino acid sequence of the PRRC2A protein. Instead, variants in this region often function by tagging larger conserved ancestral haplotypes or modulating nearby gene regulation, transcript stability, or tissue-specific expression patterns.
Biological Function of PRRC2A
The PRRC2A (proline-rich coiled-coil 2A) gene encodes a large, conserved protein containing proline-rich repeats and coiled-coil domains. Functionally, PRRC2A operates predominantly as an RNA-binding protein and an essential reader of N6-methyladenosine (m6A) modifications on messenger RNA, playing key roles in post-transcriptional gene regulation and mRNA stability. Although originally cataloged within the major histocompatibility complex due to its chromosomal location, PRRC2A is expressed across a wide range of human tissues beyond immune cell lineages. Its systemic roles in RNA processing and translation control suggest it participates in core cellular homeostasis, which may intersect with the regulatory machinery governing oocyte preservation and cellular aging.
Research on Menopause Timing and Evidence Strength
Large-scale genome-wide association studies (GWAS), including multi-cohort meta-analyses led by consortia such as ReproGen and the UK Biobank, have identified loci across chromosome 6p21 associated with the age of natural menopause (ANM) and the duration of the female reproductive lifespan. At this locus, rs10852344 has demonstrated statistical association with minor shifts in the onset of natural menopause. However, the overall strength of evidence for rs10852344 as a direct causative driver remains classified as limited. Because the MHC region features profound linkage disequilibrium, pinpointing whether PRRC2A itself or an adjacent regulatory element drives the statistical signal remains challenging, and the per-allele effect size translates to only a modest shift of a few months in population-level averages.
Population Distribution and Allele Frequencies
The frequency of rs10852344 alleles varies across global ancestries, reflecting the distinct evolutionary histories and selective pressures that have shaped the MHC region. In populations of European ancestry, the minor allele frequency is approximately 0.35, meaning that more than half of individuals in these cohorts carry at least one copy of the minor allele. Genotype distributions adhere generally to expected Hardy-Weinberg equilibrium within large population cohorts. Because genomic architecture and linkage disequilibrium patterns at 6p21 differ across continental groups, researchers emphasize that statistical associations observed primarily in European cohorts may not confer identical effect sizes or significance across other global populations.
Clinical Utility and Interpretation Limits
It is critical to distinguish between population-level statistical associations and individual clinical predictions. While rs10852344 contributes to the polygenic architecture underlying ovarian reserve and reproductive aging, carrying a particular genotype cannot predict whether or when a person will experience menopause. The timing of natural menopause is complex and multifactorial, shaped by hundreds of genetic variants of modest individual effect alongside lifestyle and environmental variables such as smoking status, overall health, and medical treatments. Therefore, genotype results for rs10852344 cannot be used as a standalone diagnostic tool or for personal reproductive planning, and any concerns regarding reproductive health should be evaluated with a qualified healthcare provider.
How common is this variant?
The minor allele frequency for rs10852344 is approximately 0.35 in populations of European ancestry. Frequencies and underlying linkage disequilibrium patterns can vary substantially across different ancestral backgrounds.
Frequently asked questions
Can rs10852344 determine when I will go through menopause?
No. The variant rs10852344 is associated with only minor average statistical differences in the age of natural menopause across large cohorts. The onset of menopause is influenced by hundreds of genetic factors combined with health, reproductive history, and environmental influences, making this single SNP unsuitable for individual prediction.
What does the PRRC2A gene do?
PRRC2A encodes an RNA-binding protein involved in post-transcriptional gene regulation, including reading m6A modifications to stabilize messenger RNA. It is expressed across many bodily tissues and plays general roles in cellular maintenance and gene expression control.
Why is research evidence on rs10852344 considered limited?
The variant is located in the MHC class III locus on chromosome 6, an area known for intense linkage disequilibrium where many adjacent genes are inherited together. Because of this complex genomic structure, it is difficult to determine whether rs10852344 directly drives the association or merely tags another functional variation nearby.
Should I change my fertility or family planning based on this variant?
No, you should not make family planning or fertility choices based on rs10852344 results. The effect size of this individual SNP is very small and does not indicate personal ovarian reserve or reproductive timeline. Consult an obstetrician-gynecologist or fertility specialist for clinically validated assessments of reproductive health.
Sources & further reading
Educational information only, last refreshed 9/10/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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