AVP rs28365147: Stress Response and Vasopressin Regulation
The genetic variant rs28365147 is a single nucleotide polymorphism located in the promoter region of the human arginine vasopressin (AVP) gene. Scientific studies have investigated this variant for its role in altering baseline AVP gene transcription and shaping autonomic and hemodynamic recovery following acute physiological stress. However, current clinical and epidemiological evidence remains limited, and the variant cannot be used to diagnose or predict medical conditions.
What each genotype means
Typical autonomic stress recovery
You carry two copies of the common C allele in the AVP promoter region. In physiological research, this genotype is typically associated with baseline levels of vasopressin gene expression and standard cardiovascular recovery dynamics following acute stress. Evidence for direct clinical impact remains limited, and this genotype represents the standard reference profile in evaluated populations.
Carried by approximately 55% to 67% of individuals of European ancestry and is the predominant genotype across most global populations.
Altered stress response tendency
You carry one copy of the promoter T allele alongside one C allele. Research indicates that the T allele may modestly alter basal transcription of the vasopressin gene, which has been linked to variations in blood pressure and autonomic recovery after acute stress. Because evidence is limited and complex, carrying this single variant allele does not predict a medical condition or specific symptom profile.
Carried by roughly 30% to 39% of individuals of European ancestry; frequencies vary significantly across other global ancestries.
Altered vasopressin transcription profile
You carry two copies of the minor T allele in the promoter region of the AVP gene. Published studies suggest this genotype may influence basal vasopressin gene transcription and autonomic stress recovery phenotypes, such as prolonged hemodynamic adjustments following acute stressors. Evidence remains preliminary and limited to small research cohorts, so this finding does not constitute a clinical diagnosis or medical risk factor.
Carried by approximately 3% to 7% of individuals of European ancestry and is uncommon in most other ancestral backgrounds.
What Is rs28365147 and Where Is It Located?
The single nucleotide polymorphism rs28365147 represents a naturally occurring variation within the regulatory promoter region of the AVP gene on human chromosome 20. In this position, the genomic sequence alternates between a cytosine (C) and a thymine (T) allele. Because the variant sits upstream of the protein-coding sequence rather than within an exon, it does not modify the amino acid sequence of the vasopressin peptide itself. Instead, promoter polymorphisms often influence gene expression by modifying transcription factor binding sites or altering the rate at which RNA polymerase transcribes the gene into messenger RNA. In laboratory models evaluating vasopressin gene regulation, functional promoter variants have been shown to impact transcriptional repression and baseline hormonal output. Genetic catalogs such as dbSNP classify rs28365147 as an upstream non-coding variant, positioning it as a potential modulator of endocrine reactivity rather than a direct cause of monogenic dysfunction.
The Biological Role of Arginine Vasopressin
The AVP gene encodes arginine vasopressin, a nonapeptide hormone also traditionally known as antidiuretic hormone (ADH). Synthesized primarily in the paraventricular and supraoptic nuclei of the hypothalamus, vasopressin is transported to the posterior pituitary gland for release into systemic circulation. Systemically, vasopressin plays an indispensable physiological role in water homeostasis by promoting fluid reabsorption in the renal collecting ducts and stimulating vascular smooth muscle contraction to maintain blood pressure. Within the central nervous system, vasopressin functions as a critical neuromodulator involved in autonomic regulation, emotional processing, anxiety-related behaviors, and neuroendocrine responses to physical and psychological stressors. By working in concert with the hypothalamic-pituitary-adrenal (HPA) axis and the sympathetic nervous system, vasopressin helps orchestrate how the human cardiovascular system reacts to acute environmental pressures and subsequently recovers homeostasis.
Research Associations and Scientific Evidence Strength
Scientific research exploring rs28365147 focuses on whether variations in the AVP promoter alter baseline hormone synthesis and downstream autonomic reactivity. Preliminary psychophysiological and cardiovascular studies suggest that alleles at this locus can influence hemodynamic stress recovery, such as how swiftly blood pressure and heart rate variability return to baseline after an acute stress challenge. However, the overall evidence strength for rs28365147 remains classified as limited. Most findings stem from smaller candidate gene investigations and targeted physiological protocols rather than massively powered genome-wide association studies (GWAS). Candidate gene studies in behavioral endocrinology frequently display modest effect sizes and can be vulnerable to publication bias or population stratification. Consequently, while the biological plausibility linking promoter-mediated vasopressin expression to stress recovery is sound, rs28365147 is not considered a deterministic predictor of stress resilience or cardiovascular disease risk.
Population Frequency and Ancestral Distribution
Allele frequencies for rs28365147 vary across distinct global populations recorded in large genomic repositories such as the Genome Aggregation Database (gnomAD). In cohorts of European ancestry, the minor T allele typically occurs at an estimated frequency ranging between approximately 0.18 and 0.26, making heterozygous CT carriers relatively common and homozygous TT carriers a smaller subset of the population. In several non-European ancestral groups, allele distributions may differ significantly, though comprehensive reference data for this specific regulatory locus remain more constrained than for common coding variants. Because population substructure can alter both allele frequencies and linkage disequilibrium patterns, associations identified in European-ancestry cohorts cannot be uncritically generalized to other global populations without broader, ancestrally diverse validation studies.
What You Can and Cannot Do With This Information
Understanding your rs28365147 genotype provides educational insight into how subtle regulatory variations in hormone genes contribute to normal human physiological diversity. It does not, however, constitute a medical diagnosis, an assessment of cardiovascular pathology, or a clinical measure of stress tolerance. Human stress reactivity is an intricately complex polygenic trait shaped by hundreds of genetic loci interacting alongside lifelong environmental factors, physical fitness, psychological coping mechanisms, and overall lifestyle. You should never alter prescription medications, discontinue medical therapies, or self-diagnose an autonomic disorder based on this genetic variant. If you have concerns about blood pressure regulation, chronic stress, or cardiovascular health, those questions are best explored in consultation with a qualified physician or healthcare professional.
How common is this variant?
The minor T allele of rs28365147 displays an estimated frequency of approximately 0.18 to 0.26 in populations of European ancestry, while comprehensive frequency profiles across non-European cohorts remain more limited in genomic repositories.
Frequently asked questions
Does having the rs28365147 variant mean I have high blood pressure?
No. The rs28365147 polymorphism is only associated with minor statistical variations in autonomic stress recovery and baseline transcription in research studies. It is not a diagnostic marker for hypertension, which is a multifactorial condition driven by diet, exercise, age, and hundreds of independent genetic loci.
Can rs28365147 determine how I handle mental or emotional stress?
No single genetic marker determines psychological stress tolerance or resilience. While vasopressin is biologically involved in emotional and neuroendocrine signaling, everyday stress coping is predominantly governed by psychological coping strategies, environment, social support, and broader neurobiological networks.
Is rs28365147 linked to diabetes insipidus?
Severe neurohypophyseal diabetes insipidus is typically caused by rare, pathogenic coding mutations in the AVP gene that severely disrupt protein structure. In contrast, rs28365147 is a common non-coding promoter variant that subtly influences transcription rather than abolishing hormone function.
Should I adjust any medications based on my rs28365147 genotype?
No. There are no clinical pharmacogenetic guidelines from organizations like CPIC or PharmGKB recommending medication adjustments for rs28365147. Any decisions regarding blood pressure, diuretic, or psychiatric medications should be discussed directly with a physician or pharmacist.
Sources & further reading
Educational information only, last refreshed 9/12/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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