DENND1A rs2479106: Understanding Your Genetic Association
The rs2479106 variant is a single nucleotide polymorphism located within the DENND1A gene. It has been statistically associated with an increased risk of polycystic ovary syndrome (PCOS) in various populations, particularly through its potential influence on androgen biosynthesis.
What each genotype means
Typical PCOS risk profile
This genotype is associated with the baseline risk for polycystic ovary syndrome (PCOS) as observed in various population studies. Research indicates that variants in the DENND1A gene may influence androgen production in ovarian theca cells, though this specific genotype does not carry the increased risk associated with the minor allele. Please consult with a healthcare provider if you have concerns regarding reproductive health or symptoms of PCOS.
This is the most common genotype in many populations, particularly among those of European ancestry.
Increased PCOS risk association
Carrying one copy of the T allele has been statistically linked to an increased risk of developing polycystic ovary syndrome (PCOS) in several studies, particularly in Asian populations. The DENND1A gene is involved in cellular processes that may affect androgen biosynthesis, and this variant is thought to play a role in that pathway. This association is based on population-level data and does not provide a clinical diagnosis; discuss any health concerns with your physician.
This genotype is frequently observed, with the T allele appearing in approximately 28% of European and 45% of East Asian populations.
Elevated PCOS risk association
Individuals with this genotype carry two copies of the T allele, which has been associated with a higher statistical risk for polycystic ovary syndrome (PCOS) in research cohorts. While the exact biological mechanism remains under investigation, the DENND1A gene is known to influence androgen production in the ovaries. This finding is a statistical association and not a medical diagnosis; please speak with a qualified healthcare professional regarding your personal health history.
This genotype is less common than the heterozygous state, occurring at frequencies consistent with the prevalence of the T allele in specific ancestral groups.
What is rs2479106 and Where is it Located?
The variant rs2479106 is a single nucleotide polymorphism (SNP) situated within the intronic regions of the DENND1A gene. In genetics, an intronic variant is one that resides in the non-coding sequence of a gene, meaning it does not directly provide the instructions for the amino acid sequence of the protein. However, intronic variants can still play critical roles in gene regulation, such as influencing how a gene is spliced or how much of a protein is produced. Because rs2479106 is located in a region associated with the DENND1A gene, researchers have focused on whether this specific change in the DNA sequence might alter the normal function or expression levels of the DENND1A protein, which is involved in cellular signaling pathways.
The Role of the DENND1A Gene
The DENND1A gene provides instructions for creating a protein that contains a DENN domain, which is involved in intracellular membrane trafficking. Research has highlighted that specific isoforms of this protein, particularly DENND1A.V2, are expressed in theca cells of the ovary. These cells are responsible for producing androgens, which are hormones that play a vital role in reproductive health. Studies have shown that when DENND1A.V2 is overexpressed in these cells, it can drive the expression of enzymes like CYP17A1, which increases androgen production. This mechanism is significant because elevated androgen levels are a hallmark of polycystic ovary syndrome (PCOS). By regulating these pathways, the DENND1A gene is considered a key candidate in understanding the biological underpinnings of androgen-related reproductive traits.
Research Associations and Evidence Strength
The association between rs2479106 and PCOS has been explored in multiple genome-wide association studies (GWAS) and meta-analyses. Research, including studies involving Han Chinese and other Asian populations, has suggested a statistical link between this variant and an increased susceptibility to PCOS. While these findings are compelling, the evidence is generally categorized as limited or moderate because the exact functional mechanism by which this intronic variant influences the disease remains a subject of ongoing investigation. It is important to note that genetic associations are statistical correlations observed in large groups of people; they do not imply a direct cause-and-effect relationship for any single individual. Furthermore, the strength of these associations can vary significantly depending on the ancestral background of the study participants, highlighting the complexity of polygenic traits.
What You Can and Cannot Do With This Information
Understanding your genotype for rs2479106 provides insight into your genetic predisposition as identified by current research, but it is not a diagnostic tool. A genetic variant is only one of many factors—including environmental, lifestyle, and other genetic influences—that contribute to complex conditions like PCOS. You cannot use this information to diagnose yourself or predict your health outcomes with certainty. If you are concerned about symptoms related to hormonal health or reproductive conditions, it is essential to consult with a qualified healthcare professional or an endocrinologist. They can provide appropriate clinical evaluations, such as hormone testing or physical exams, which are far more informative than genetic data alone. Always discuss any health concerns or potential lifestyle changes with your doctor before making medical decisions.
How common is this variant?
The minor allele frequency for rs2479106 is approximately 0.28 in European populations and approximately 0.45 in East Asian populations.
Frequently asked questions
Does having the rs2479106 variant mean I have PCOS?
No, having this variant does not mean you have PCOS. Genetic variants are only one factor in a complex condition, and many people with this variant do not develop the syndrome.
Can I use a DNA test to diagnose PCOS?
No, PCOS is a clinical diagnosis made by a healthcare provider based on symptoms, hormone levels, and physical examinations. Genetic testing is not a standard diagnostic tool for this condition.
Why is the evidence for this variant considered limited?
The evidence is considered limited because while statistical associations exist, the exact biological mechanism linking this specific intronic variant to the disease is still being researched. Additionally, results can vary across different ancestral groups.
Should I change my diet or lifestyle based on this SNP?
You should not make medical or lifestyle changes based solely on a genetic variant. Always consult with a doctor or a registered dietitian to discuss your specific health needs and evidence-based strategies.
Sources & further reading
Educational information only, last refreshed 9/29/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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This variant in the DENND1A gene has been investigated for polycystic ovary syndrome (PCOS) susceptibility, though recent studies indicate it lacks a significant correlation with PCOS in certain populations like the Chinese Han.
Prominent susceptibility locus within DENND1A linked across global GWAS cohorts to ovarian theca cell hyperfunction, hyperandrogenism, and polycystic ovary syndrome (PCOS).
This variant in the DENND1A gene is associated with the development of polycystic ovary syndrome (PCOS) and abnormal hormone levels.