DRD2 rs773464053: Understanding This Rare Genetic Variant
The rs773464053 variant is a rare genetic change located within the DRD2 gene, which plays a critical role in dopamine signaling. This variant is currently being studied for its potential influence on the physiological stress response and neurological function.
What each genotype means
Typical stress response profile
This genotype represents the most common form of this variant in the general population. While this variant is located in the DRD2 gene, which is involved in dopaminergic signaling and stress response, current scientific evidence for this specific marker is limited. You should not interpret this as a diagnostic indicator of your stress response or psychological health.
This is the most common genotype, found in the vast majority of the global population.
Typical stress response profile
This genotype includes one copy of the less common allele. Because the evidence for this specific variant's impact on stress response is currently limited, there is no established clinical significance for carrying this genotype. It is not considered a marker for any specific health condition or behavioral trait.
This genotype is extremely rare, occurring in approximately 1 in 150,000 individuals based on current population data.
Typical stress response profile
This genotype consists of two copies of the rare allele. While the DRD2 gene is known to modulate dopaminergic signaling, the specific functional consequences of this rare variant remain poorly understood in scientific literature. This result does not provide actionable medical information regarding your stress response.
This genotype is exceptionally rare, with a frequency estimated at approximately 0.000003419 in the general population.
What is the rs773464053 Variant?
The rs773464053 variant is a specific single nucleotide polymorphism (SNP) found within the DRD2 gene. In genetics, a SNP represents a variation at a single position in the DNA sequence among individuals. This particular variant is categorized as rare, meaning it is found in a very small percentage of the global population. It is located within the genomic region that encodes the dopamine D2 receptor, a protein essential for transmitting chemical signals in the brain. Because this variant is located in a gene involved in complex neurological pathways, researchers monitor it to understand how subtle changes in DNA might influence biological processes. It is important to note that the presence of a variant does not automatically imply a health condition; rather, it is a point of interest for scientists studying the diversity of the human genome and its relationship to various physiological traits.
The Role of the DRD2 Gene
The DRD2 gene provides instructions for creating the dopamine D2 receptor. This receptor is a G-protein coupled receptor that acts as a key component of the dopaminergic system, which regulates mood, motivation, reward, and the physiological response to stress. Dopamine is a neurotransmitter that helps control the brain's reward and pleasure centers and also helps regulate movement and emotional responses. When dopamine binds to the D2 receptor, it triggers a cascade of signals that can inhibit or excite neurons, depending on the context. Because of its central role in brain chemistry, the DRD2 gene has been extensively studied in the context of neuropsychiatric conditions, including schizophrenia, depression, and substance use disorders. Variations in this gene are thought to potentially alter the density or sensitivity of these receptors, which may influence how an individual processes stress or responds to environmental stimuli.
Research and Evidence Strength
Current evidence regarding the clinical significance of rs773464053 is limited. While the DRD2 gene itself is a well-established focus of psychiatric and neurological research, specific data linking this particular variant to definitive health outcomes or disease states is sparse. Many studies on DRD2 variants have shown inconsistent results, highlighting the complexity of genetic associations where multiple genes and environmental factors interact. Because rs773464053 is extremely rare, large-scale studies have not yet been able to establish a clear, statistically significant effect size for this specific marker. Consequently, it is classified as having limited evidence in the context of clinical diagnostics. Researchers continue to investigate such variants to build a more comprehensive map of human genetic variation, but it is premature to draw conclusions about its impact on an individual's health or behavior based on current published literature.
Population Frequency
The rs773464053 variant is exceptionally rare, with a reported population frequency of approximately 0.000003419. This indicates that the variant is found in only a tiny fraction of the individuals studied in global genomic databases.
What You Can Do With This Information
Genetic information, especially regarding rare variants like rs773464053, should be interpreted with caution. Because the evidence is limited, this variant cannot be used to predict health outcomes, diagnose conditions, or determine personal risk for stress-related disorders. If you have received information about this variant through genetic testing, it is important to understand that it does not constitute a medical diagnosis. You should never make changes to your health regimen or medication based on this information without consulting a qualified healthcare professional. If you are concerned about stress, mood, or neurological health, speak with your doctor or a genetic counselor who can provide context based on your full medical history and clinical presentation. They are the best resources for interpreting how genetic findings might—or might not—relate to your personal health journey.
How common is this variant?
The variant is extremely rare, with a global frequency of 0.000003419, making it an uncommon finding in most populations.
Frequently asked questions
Is rs773464053 a disease-causing mutation?
There is currently no evidence to classify rs773464053 as a disease-causing mutation. It is a rare genetic variant, and its clinical significance remains unknown.
Can I use this variant to predict my stress response?
No. While the DRD2 gene is involved in stress pathways, this specific variant does not have enough scientific evidence to predict how an individual will respond to stress.
Should I be worried if I have this variant?
Finding a rare variant is common in genetic testing and does not necessarily mean you have a health problem. You should discuss any concerns with a healthcare provider.
Where can I find more information about DRD2?
You can explore resources like MedlinePlus Genetics or the NCBI Gene database for general information about the function and role of the DRD2 gene.
Sources & further reading
Educational information only, last refreshed 9/19/2026. Not medical advice — these associations describe population statistics, not individual predictions.
Curious what your genotype is for rs773464053?
Upload a raw DNA file from 23andMe, AncestryDNA, MyHeritage, or FamilyTreeDNA and see this variant — plus thousands more — interpreted in your full report.
Get my report — $29Related variants in DRD2
This SNP in the DRD2 gene is frequently studied in the context of psychiatric genetics, particularly regarding dopamine receptor expression and schizophrenia risk.
This variant has been studied for its association with schizophrenia and dopaminergic signaling.
The TaqIB polymorphism in the DRD2 gene is associated with dopamine receptor density and various behavioral and reward-related traits.
The DRD2 TaqIB variant modulates dopamine D2 receptor density and has been investigated for associations with addiction susceptibility and antipsychotic response.
A synonymous coding variant in exon 7 of DRD2 that affects mRNA stability, translation kinetics, and dopamine-related working memory and reward phenotypes.
Known as the DRD2 TaqID polymorphism, this variant alters D2 dopamine receptor gene structure and is implicated in altered striatal dopamine functioning and substance use behavior.