EDA2R rs929626: Understanding Genetic Links to Hair Loss
The rs929626 variant is a genetic marker located within the EDA2R gene region on the X chromosome. It is statistically associated with male-pattern hair loss, a common condition characterized by progressive thinning of scalp hair.
What each genotype means
Typical hair loss risk
This genotype is associated with the baseline risk for male-pattern hair loss in the general population. Research indicates that the EDA2R region plays a role in hair follicle maintenance, but this specific genotype does not carry the increased risk variant identified in some studies. Hair loss is a complex trait influenced by many genetic and environmental factors.
This genotype is common in most populations, though exact frequencies vary by ancestry.
Slightly increased hair loss risk
Individuals with this genotype carry one copy of the variant associated with a higher statistical likelihood of early hair thinning or male-pattern hair loss. Because hair loss is polygenic, this result represents only one of many factors contributing to hair health. You should view this as a minor genetic predisposition rather than a definitive outcome.
This heterozygous genotype is found at varying frequencies globally, often appearing in a significant portion of the population.
Increased hair loss risk
This genotype is associated with a higher statistical risk for male-pattern hair loss compared to the alternative allele. The EDA2R gene is involved in the development and maintenance of ectodermal structures like hair follicles, and this variant is frequently cited in studies regarding androgenetic alopecia. Please note that genetic risk is only one component of hair loss, and many other factors, including age and hormonal levels, play a major role.
This genotype is observed across various populations, with prevalence rates that differ significantly depending on ancestral background.
What is rs929626 and Where is it Located?
The variant rs929626 is a single nucleotide polymorphism (SNP) situated on the X chromosome. It resides within the genomic region of the EDA2R gene, which stands for Ectodysplasin A2 Receptor. Because this variant is located on the X chromosome, its inheritance pattern and impact are particularly relevant to biological males, who possess one X chromosome. In the context of genomics, SNPs like rs929626 serve as signposts that researchers use to identify areas of the genome that may contribute to specific physical traits or conditions. While the SNP itself is a small change in the DNA sequence, it is often studied as part of a larger cluster of variants in the AR/EDA2R locus, which has been consistently identified in genome-wide association studies (GWAS) as a primary site linked to hair follicle health and density.
The Role of the EDA2R Gene
The EDA2R gene encodes a protein that acts as a receptor for the EDA-A2 isoform of ectodysplasin. This signaling pathway is essential for the development and maintenance of ectodermal structures, including hair follicles, teeth, and sweat glands. Research indicates that the EDA2R protein is expressed in human hair follicles, where it plays a role in regulating the hair growth cycle. When this signaling pathway is disrupted or altered, it can affect how hair follicles transition through their growth and resting phases. Because male-pattern hair loss involves the miniaturization of hair follicles over time, genes involved in follicle development and cycle regulation, such as EDA2R, are primary candidates for understanding why some individuals experience earlier or more severe hair thinning than others.
Research Associations and Evidence Strength
The association between the EDA2R region and male-pattern hair loss is supported by moderate to strong evidence from large-scale genetic studies. Genome-wide association studies have repeatedly highlighted the AR/EDA2R locus as one of the most significant contributors to the risk of androgenetic alopecia. While these studies demonstrate a clear statistical link between specific variants in this region and the likelihood of experiencing hair loss, they do not establish direct causality. It is important to note that hair loss is a multifactorial condition influenced by many genetic variants across the genome, as well as environmental factors. The evidence suggests that while rs929626 is a useful marker for research, it is only one piece of a complex genetic puzzle, and its presence does not guarantee that an individual will experience significant hair loss.
What You Can and Cannot Do With This Information
Understanding your genetic markers can be an educational experience, but it is important to maintain realistic expectations. You can use this information to learn more about the biological pathways involved in hair growth and the current state of genetic research. However, you cannot use this information to definitively predict your future hair health or to diagnose a medical condition. Genetic associations are based on population-level data and do not account for the unique combination of lifestyle, hormonal, and other genetic factors that influence an individual. If you are concerned about hair loss, the most effective approach is to consult with a dermatologist or a healthcare professional. They can provide a clinical evaluation and discuss evidence-based management options that are appropriate for your specific health profile.
How common is this variant?
Specific population frequency data for rs929626 is not widely documented in standard public catalogs. The variant is generally considered a common polymorphism within the AR/EDA2R locus across various ancestral groups.
Frequently asked questions
Does having this variant mean I will go bald?
No. Genetic variants only indicate a statistical association with a trait, not a certainty. Hair loss is influenced by many genes and environmental factors, so having a specific genotype does not guarantee any particular outcome.
Is EDA2R the only gene linked to hair loss?
No. Male-pattern hair loss is a polygenic trait, meaning it is influenced by many different genes. Other genes, such as the Androgen Receptor (AR) gene and WNT10A, have also been strongly linked to hair loss in scientific research.
Can I change my genetics to prevent hair loss?
You cannot change your genetic code. However, if you are concerned about hair loss, you can speak with a dermatologist about clinically proven treatments and lifestyle strategies that may help manage the condition.
Where can I find more information on this SNP?
You can search for the rsID 'rs929626' on the NCBI dbSNP database or the GWAS Catalog. These resources provide access to published research and the latest scientific findings regarding specific genetic variants.
Sources & further reading
Educational information only, last refreshed 10/3/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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