HLA-B rs2523570: Understanding Your Genetic Variant
The rs2523570 variant is a genetic marker located within the HLA-B gene, a critical component of the human immune system. Research has identified this specific variant in meta-analyses exploring potential associations with inflammatory and developmental conditions related to male reproductive health.
What each genotype means
Common genetic profile
This genotype represents the most frequently observed sequence at this position in many global populations. Current research indicates that rs2523570 has been identified in meta-analyses as a lead variant associated with certain inflammatory and developmental penile conditions, though the evidence strength remains limited. This result does not constitute a medical diagnosis or a prediction of health outcomes.
This is the most common genotype in populations where the C allele is predominant.
Heterozygous genetic profile
Carrying one copy of the T allele means you possess the variant identified in research studies exploring associations with inflammatory and developmental penile conditions. Because the evidence strength for this association is currently limited, the clinical significance of this genotype is not well-established. Please consult with a healthcare professional if you have specific concerns regarding your reproductive health.
Carried by a significant portion of individuals in European ancestries, where the minor allele frequency is approximately 0.20–0.30.
Variant homozygous profile
This genotype indicates you carry two copies of the T allele, which is the variant associated with inflammatory and developmental penile conditions in some genetic meta-analyses. The evidence linking this specific variant to these conditions is currently classified as limited, meaning its impact on individual health is not fully understood. This information is for educational purposes and should not be used to infer personal medical risk.
This genotype is less common than the heterozygous state, occurring at a frequency consistent with the minor allele frequency of 0.20–0.30 in European populations.
What is rs2523570 and Where is it Located?
The rs2523570 variant is a single nucleotide polymorphism (SNP) situated within the HLA-B gene. In genomics, a SNP represents a variation at a single position in the DNA sequence among individuals. This specific variant is located in the major histocompatibility complex (MHC) region on chromosome 6. This region is highly complex and dense with genes that are essential for immune function. Because this area of the genome is so gene-rich and structurally intricate, researchers often study variants here to understand how subtle genetic differences might influence susceptibility to various health conditions. Identifying a SNP like rs2523570 is typically the result of a genome-wide association study (GWAS), which scans the entire genome to find statistical links between specific DNA markers and observed traits or diseases.
The Role of the HLA-B Gene
The HLA-B gene provides instructions for creating a protein that is a vital part of the human leukocyte antigen (HLA) complex. This complex acts as the body's internal security system, helping the immune system distinguish between the body's own healthy proteins and those belonging to foreign invaders like viruses or bacteria. HLA-B is classified as an MHC class I molecule, which functions by presenting protein fragments to immune cells called T-cells. This process allows the immune system to identify and eliminate infected or abnormal cells. Because of its central role in immune surveillance, variations in the HLA-B gene are frequently studied in the context of autoimmune diseases, drug hypersensitivity reactions, and how the body responds to infections. The gene is known for having an exceptionally high level of diversity, with hundreds of different versions, or alleles, existing in the human population.
Research Associations and Evidence Strength
The association between rs2523570 and specific health outcomes is currently categorized as having limited evidence. Scientific literature, including data from large-scale meta-analyses, has flagged this variant in studies investigating inflammatory and developmental conditions affecting male reproductive health. It is important to note that a statistical association in a GWAS does not necessarily mean the variant causes the condition; rather, it suggests that the variant is located near or within a region that may influence the trait. Because the MHC region is so complex, it can be difficult to pinpoint whether rs2523570 itself is the functional driver of these associations or if it is simply inherited alongside other nearby genetic factors. As with many findings in complex trait genetics, these results require further replication and functional validation to fully understand the biological mechanisms at play.
What You Can Do With This Information
Understanding your genetic profile can be an educational experience, but it is essential to interpret findings like rs2523570 with caution. Because the evidence linking this variant to specific health outcomes is limited, it should not be used to predict personal health risks or to make medical decisions. Genetic variants are only one piece of a much larger puzzle that includes environmental factors, lifestyle, and other genetic influences. If you have concerns about your reproductive health or any inflammatory conditions, the most effective approach is to consult with a qualified healthcare professional. They can provide context based on your personal medical history, physical examinations, and validated clinical tests. Never use information from genetic databases to diagnose yourself or to alter any prescribed treatments without first discussing it with your doctor or a genetic counselor.
How common is this variant?
The minor allele frequency for rs2523570 is approximately 0.20 to 0.30 in European ancestries, indicating that the variant is relatively common in these populations.
Frequently asked questions
Is rs2523570 a diagnostic test for reproductive health?
No, rs2523570 is not a diagnostic test. It is a genetic variant identified in research studies, and the current evidence linking it to health conditions is limited and not sufficient for clinical diagnosis.
What does it mean if my report says I have the 'risk' allele?
In the context of GWAS, a 'risk' allele simply refers to the version of the gene that was more frequently found in people with a certain trait during a study. It does not mean you will develop a condition, as most genetic associations have a very small individual effect.
Can I change my health outcomes based on this SNP?
Genetic variants like rs2523570 are fixed at birth and cannot be changed. Health outcomes are influenced by a combination of genetics, environment, and lifestyle, and you should focus on evidence-based health practices recommended by your doctor.
Where can I find more information about HLA-B?
You can find reliable information about the HLA-B gene and its general functions on resources like MedlinePlus Genetics or the National Center for Biotechnology Information (NCBI) Gene database.
Sources & further reading
Educational information only, last refreshed 9/26/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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This variant is located in the HLA-B region and is associated with immune response variability and susceptibility to various autoimmune conditions.
Variant residing within the human leukocyte antigen complex associated with autoimmune disorders and differential immune response.
Variant in the HLA-B region associated with immune response and drug hypersensitivity reactions.
Cross-ancestral HLA locus variant conferring consistent risk for oropharyngeal carcinoma across European and admixed ancestry cohorts.
This SNP is located in the 3' region of the HLA-B gene and is associated with HIV-1 controller phenotypes.
Located in the HLA-B region, this marker is associated with viral load set points and HIV-1 disease progression.