AGT rs387906578: Understanding This Rare Genetic Variant
The rs387906578 variant is a rare genetic deletion located within the AGT gene. It is classified as a pathogenic variant associated with renal tubular dysgenesis, a severe condition affecting kidney development before birth.
What each genotype means
Typical AGT genotype
This genotype represents the common, non-deleted sequence for this specific location in the AGT gene. It is considered the reference sequence in the general population.
This is the most common genotype found in the general population.
Carrier of renal variant
This genotype indicates you carry one copy of a deletion mutation in the AGT gene, sometimes referred to as a pathogenic variant. Research associates this specific deletion with an increased risk of passing on a predisposition to renal tubular dysgenesis, an autosomal recessive condition, to offspring.
This specific deletion is rare in the general population.
What is rs387906578?
The variant rs387906578 is a specific genetic deletion located on chromosome 1 within the AGT gene. In genetic databases, this is often represented as a deletion of an adenine nucleotide. Because it is a deletion, it alters the sequence of the DNA, which can potentially disrupt the production or function of the protein encoded by the gene. This variant is categorized as a pathogenic mutation, meaning it has been identified in clinical settings as a cause of specific hereditary conditions. It is important to note that genetic variants are common in the human population, but this specific deletion is considered rare. Understanding such variants requires looking at how they affect the body's biological pathways, particularly those involved in development and physiological regulation.
The Role of the AGT Gene
The AGT gene provides the instructions for creating a protein called angiotensinogen. This protein is a critical component of the renin-angiotensin system, a complex hormonal pathway that regulates blood pressure, fluid balance, and salt levels in the body. Angiotensinogen is the precursor that is eventually converted into angiotensin II, a hormone that helps maintain blood pressure and kidney function. Because this system is vital for fetal development, mutations that significantly impair the function of the AGT gene can have profound effects. When the body cannot produce functional angiotensinogen, it can lead to severe disruptions in the development of the kidneys, specifically affecting the proximal tubules that are necessary for urine production and fluid regulation during pregnancy.
Research and Clinical Associations
Research has established a strong link between mutations in the AGT gene and a condition known as renal tubular dysgenesis (RTD). RTD is a severe kidney disorder characterized by the abnormal development of kidney structures before birth. Because the kidneys are unable to produce urine, this leads to a condition called oligohydramnios, or low amniotic fluid, which can cause further complications for the developing fetus, such as underdeveloped lungs and specific facial features. The evidence for the pathogenicity of certain AGT mutations is well-documented in clinical literature, as these mutations are inherited in an autosomal recessive pattern. This means that an individual typically needs to inherit two copies of the altered gene—one from each parent—to manifest the condition. The evidence strength for this variant's role in such disorders is considered moderate to high based on clinical reporting.
Population Frequency
The rs387906578 variant is classified as rare in the general population. Because it is associated with a severe, early-onset condition, it is not commonly found in the general healthy population at high frequencies. Most individuals who carry this variant do not show symptoms unless they have inherited a second pathogenic mutation in the same gene. Genetic databases indicate that this variant is not a common polymorphism, and its presence is typically identified through clinical diagnostic testing rather than population-wide screening. Due to its rarity, there is limited data on its specific distribution across different ancestral groups, but it remains a focus of clinical genetics research regarding hereditary renal disorders.
What This Information Means
If you have received information about this variant, it is important to understand that it is a carrier-status finding. Being a carrier for an autosomal recessive condition generally means you have one copy of the variant and one normal copy of the gene, which typically does not cause the disease itself. However, if you are planning a family, you may wish to discuss this with a genetic counselor or a medical professional. They can provide context regarding the risks of passing the variant to offspring and explain the implications of carrier status. This information is for educational purposes and should not be used to diagnose or treat any medical condition. Always consult with a qualified healthcare provider to interpret genetic test results in the context of your personal and family medical history.
How common is this variant?
The rs387906578 variant is considered rare across all major population groups.
Frequently asked questions
What is renal tubular dysgenesis?
Renal tubular dysgenesis is a severe kidney disorder where the kidneys fail to develop properly before birth. This leads to an inability to produce urine, which causes low amniotic fluid levels and can affect the development of other organs.
Does having this variant mean I have a kidney disease?
Not necessarily. Because this condition is autosomal recessive, carrying one copy of the variant usually does not cause the disease. You should consult a genetic counselor to understand your specific risk.
Can I change my genotype for this variant?
No, your genetic sequence is determined at conception and cannot be changed. Genetic testing provides information about your inherited DNA, not a condition that can be altered through lifestyle or diet.
Should I be worried if I am a carrier?
Being a carrier is common for many genetic variants. However, if you are concerned about family planning, speaking with a genetic counselor can help you understand the inheritance patterns and the likelihood of passing the variant to children.
Sources & further reading
Educational information only, last refreshed 9/18/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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Angiotensinogen M235T polymorphism associated with variations in plasma angiotensinogen levels and essential hypertension susceptibility.
Associated with differences in blood pressure response to dietary salt.
This variant is identified as a pathogenic mutation linked to renal dysplasia.