PRRC2A rs3130623: Understanding Genetic Markers for T1D Risk
The rs3130623 variant is a single nucleotide polymorphism (SNP) located within the PRRC2A gene. Research has identified this variant as a potential genetic marker associated with susceptibility to Type 1 Diabetes in specific populations.
What each genotype means
Baseline risk profile
This genotype represents the non-risk state for this specific variant. Research in Chinese Han populations indicates that individuals without the T allele at this position do not carry the associated increased susceptibility to Type 1 Diabetes linked to this marker.
This is the most common genotype in many populations, though exact frequencies vary significantly by ancestry.
Increased susceptibility marker
Carrying one copy of the T allele is associated with a statistically significant increase in susceptibility to Type 1 Diabetes in certain populations. This variant is located in an intronic region of the PRRC2A gene and may influence immune system regulation; please discuss any health concerns or family history with your clinician.
This genotype is observed at varying frequencies depending on ancestral background, with notable documentation in studies of Chinese Han populations.
Elevated susceptibility marker
Carrying two copies of the T allele is associated with a higher statistical risk for Type 1 Diabetes compared to those without the variant. As this marker is linked to immune homeostasis and autoantibody positivity, you should consult with a healthcare provider to discuss your overall health profile and any relevant clinical screenings.
This genotype is less common than the heterozygous state in many populations, with prevalence highly dependent on specific ancestral groups.
What is rs3130623?
The rs3130623 variant is a specific change in the DNA sequence, known as a single nucleotide polymorphism (SNP), located within the PRRC2A gene. In genetics, a SNP represents a variation at a single position in the DNA sequence among individuals. This particular variant is categorized as an intronic variant, meaning it resides in a non-coding region of the gene. While it does not directly alter the protein sequence, such variants are often studied for their potential to influence how genes are regulated or expressed. Scientists use these markers to investigate the genetic architecture of complex diseases, as they can serve as signposts for nearby functional elements that may contribute to health conditions.
The Role of the PRRC2A Gene
The PRRC2A gene, which stands for proline-rich coiled-coil 2A, encodes a protein that functions as an m6A reader. This means it plays a role in recognizing and binding to N6-methyladenosine (m6A), a common chemical modification found on messenger RNA (mRNA). By binding to these modified RNAs, PRRC2A helps regulate post-transcriptional processes, such as mRNA stability and translation efficiency. Research indicates that PRRC2A is involved in critical biological pathways, including nervous system development, oligodendrocyte differentiation, and the regulation of immune homeostasis. Because of its broad influence on gene expression, variations in this gene are frequently investigated in the context of autoimmune disorders, neurological conditions, and various types of cancer.
Research and Evidence Strength
The association between rs3130623 and Type 1 Diabetes (T1D) is supported by moderate evidence, primarily derived from case-control studies in specific populations, such as the Chinese Han population. Research published in journals like Frontiers in Endocrinology has identified rs3130623 as a tag SNP associated with T1D risk. These studies suggest that the variant may be located in functional promoter or enhancer regions, potentially influencing the expression levels of PRRC2A. While these findings provide valuable insights into the genetic susceptibility of T1D, it is important to note that the evidence is currently limited to specific ancestral groups. Further research across diverse populations is necessary to confirm the generalizability of these associations and to fully understand the underlying biological mechanisms.
Interpreting Your Genetic Information
Genetic variants like rs3130623 are tools for scientific research rather than diagnostic instruments. Having a specific genotype at this location does not mean an individual will develop a disease, nor does it guarantee protection. Complex conditions like Type 1 Diabetes are influenced by a combination of multiple genetic factors, environmental triggers, and lifestyle elements. If you have received information about this variant from a genetic test, it is important to view it in the context of your overall health and family history. This information should not be used to make medical decisions or self-diagnose. Always consult with a qualified healthcare provider or a genetic counselor to discuss how genetic findings relate to your personal health and to address any concerns you may have.
How common is this variant?
The frequency of the rs3130623 alleles is variable and depends significantly on ancestral background, with specific distribution patterns documented in databases like gnomAD and regional population studies.
Frequently asked questions
Is rs3130623 a diagnostic test for Type 1 Diabetes?
No, rs3130623 is not a diagnostic test. It is a genetic marker identified in research studies as being associated with a statistical increase in risk, but it cannot predict whether an individual will develop the condition.
Can I change my risk associated with PRRC2A variants?
Genetic variants are inherited and cannot be changed. However, health outcomes are influenced by many factors, and you should focus on overall wellness and regular medical check-ups as advised by your doctor.
Where can I find more information about PRRC2A?
You can find detailed information about the PRRC2A gene on the NCBI Gene database or through reputable medical genetics resources like MedlinePlus Genetics.
Should I be worried if I have the risk allele for rs3130623?
Genetic associations are often small and part of a much larger picture. You should not be worried based on a single SNP; instead, discuss your overall health profile and any concerns with a healthcare professional.
Sources & further reading
Educational information only, last refreshed 11/1/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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This variant in the PRRC2A gene is associated with an increased risk of developing Type 1 Diabetes.
MHC class III locus variant mapped to PRRC2A (BAT2), consistently associated in genome-wide association studies with age at natural menopause and female reproductive aging.