ENG rs750115837: What Your Genotype Means
The rs750115837 variant is a specific genetic change located within the ENG gene. This gene is associated with hereditary hemorrhagic telangiectasia (HHT), a rare condition that affects how blood vessels form throughout the body.
What each genotype means
Typical ENG gene profile
This genotype represents the most common sequence observed at this position in the ENG gene. It is not associated with the vascular changes characteristic of hereditary hemorrhagic telangiectasia in the general population.
This is the predominant genotype found across all major global populations.
Rare variant carrier
This genotype indicates the presence of a rare variant in the ENG gene. Because this gene is linked to hereditary hemorrhagic telangiectasia, individuals with this finding should consult with a medical geneticist or healthcare provider to understand its clinical relevance, as the functional impact of this specific rare change is not fully established.
This genotype is extremely rare and is observed at very low frequencies in global population databases.
Rare homozygous variant
This genotype indicates that both copies of the ENG gene carry this rare variant. Given the association of ENG with hereditary hemorrhagic telangiectasia, this finding warrants professional clinical evaluation to determine if it contributes to any underlying vascular health conditions.
This genotype is exceptionally rare and is not typically observed in standard population cohorts.
Understanding the ENG Gene
The ENG gene provides instructions for making a protein called endoglin, which is primarily found on the surface of endothelial cells that line the interior of blood vessels. Endoglin plays a critical role in the signaling pathways of transforming growth factor-beta (TGF-β), a protein complex essential for maintaining the structural integrity of blood vessels. By facilitating proper communication between cells, endoglin helps regulate the development and stability of the vascular system. When the ENG gene is altered, the resulting protein may be non-functional or absent, leading to a condition known as haploinsufficiency. This means the body does not have enough functional endoglin to maintain normal blood vessel structure, which can result in the formation of abnormal connections between arteries and veins, known as arteriovenous malformations.
The Role of rs750115837 in HHT
Hereditary hemorrhagic telangiectasia (HHT), also known as Osler-Weber-Rendu syndrome, is a rare, autosomal dominant vascular disorder. Research indicates that mutations in the ENG gene are responsible for HHT type 1 (HHT1). The variant rs750115837 is identified within the context of this gene's involvement in the condition. Because HHT is inherited in an autosomal dominant pattern, having a single copy of a pathogenic variant is typically sufficient to increase the risk of developing the disorder. Clinical evidence suggests that these variants disrupt the normal migration and proliferation of endothelial cells. While many different mutations have been documented across the ENG gene, the specific clinical impact of any single variant like rs750115837 is evaluated by clinicians based on family history, physical symptoms, and diagnostic testing, as genetic testing alone is not always definitive for every family.
Population Frequency and Research Context
The variant rs750115837 is considered rare in the general population. Genetic databases and clinical research studies often categorize such variants as rare because they are not found at high frequencies in large-scale genomic sequencing projects. Because HHT is a rare disease, the prevalence of specific individual variants like rs750115837 is limited, and data regarding its frequency across diverse ancestral groups may be sparse. Current scientific literature emphasizes that while over 900 mutations have been described in the ENG and ACVRL1 genes combined, the specific distribution of these variants can vary significantly between families and populations. Researchers continue to study these variants to better understand the spectrum of HHT and to improve the accuracy of genetic counseling for affected individuals and their families.
Navigating Genetic Information
If you or a family member are concerned about HHT, it is important to understand that genetic information is only one piece of the puzzle. A diagnosis of HHT is typically confirmed through a combination of clinical symptoms, family history, and, when appropriate, genetic testing. If a variant like rs750115837 is identified, it should be discussed with a medical geneticist or a healthcare provider who specializes in vascular disorders. They can help interpret what this means for your health and provide guidance on screening or management strategies. You cannot diagnose yourself based on a genetic report, and you should never make changes to your medical care or treatment plans without consulting a qualified clinician. Genetic testing for rare conditions is a complex process that requires professional interpretation to ensure the results are used safely and effectively.
How common is this variant?
The variant rs750115837 is classified as rare, with limited frequency data available across global populations.
Frequently asked questions
What is hereditary hemorrhagic telangiectasia?
HHT is a rare genetic disorder that causes abnormal blood vessel formation, leading to arteriovenous malformations. These can occur in the lungs, brain, liver, and skin, often resulting in symptoms like nosebleeds and anemia.
Is HHT always inherited from a parent?
HHT is an autosomal dominant condition, meaning it is typically inherited from an affected parent. However, it can also arise from a new, or de novo, mutation in an individual with no family history of the condition.
Does having an ENG variant mean I have HHT?
Not necessarily. While variants in the ENG gene are associated with HHT, a clinical diagnosis requires a professional evaluation of symptoms and family history. You should discuss any genetic findings with a doctor or genetic counselor.
Where can I find more information about HHT?
You can find reliable information through resources like MedlinePlus Genetics, the National Institutes of Health (NIH), and specialized centers of excellence for HHT. These organizations provide educational materials on the genetics and management of the condition.
Sources & further reading
Educational information only, last refreshed 10/1/2026. Not medical advice — these associations describe population statistics, not individual predictions.
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Genetic variant identified in the ENG gene, relevant for clinical screening of vascular disorders.
A known pathogenic mutation in the ENG gene linked to vascular malformations.
Pathogenic variant in the ENG gene associated with hereditary hemorrhagic telangiectasia type 1.
A variant in the ENG gene potentially impacting protein function related to vascular development.
This variant is located within the ENG gene, which is associated with hereditary hemorrhagic telangiectasia.
Clinically significant variant in the ENG gene associated with hereditary hemorrhagic telangiectasia.