The ADGRV1 gene gives your body instructions for a protein that helps cells in the inner ear and retina stay organized and work properly. This gene plays an important role in hearing and vision, especially in the sound sensing cells of the ear and the light sensing cells of the eye. If the ADGRV1 gene is not working well, a person may have hearing loss from birth or childhood and later develop progressive vision loss, often as part of Usher syndrome.
What is a gene?
A gene is a section of DNA that carries information cells use to make molecules or direct processes in the body. Some genes hold the instructions for building proteins, which are the working parts of cells. Others mainly help regulate when certain processes happen, where they take place, and how strongly they are carried out. Taken together, genes affect how the body develops and works, and they can influence how you respond to food, stress, or medications. More detail on this topic is available in the LearnHub.
Overview
ADGRV1Gene function
What if the gene works
The ADGRV1 gene helps certain cells in the inner ear and retina keep their shape and communicate properly. This supports normal hearing, balance, and vision.
Risk
What if the gene does not work
Biallelic variants in the ADGRV1 gene most often cause Usher syndrome type 2C, with hearing loss from birth and later retinal disease that affects night and side vision. Milder to more severe variants can influence timing and severity.
Treatment
What does that mean for your treatment
For pathogenic or loss-of-function variants in the ADGRV1 gene, no ADGRV1-specific treatment or drug selection approach is currently established in clinical guidelines. The ADGRV1 gene is being studied in inherited retinal disease research, including possible gene therapy strategies, but this has not yet changed routine care.
Conditions associated with ADGRV1
Gene function
What if the gene works
In the inner ear and retina, the ADGRV1 gene helps cells stay connected and neatly arranged. This supports the fine structures your body uses for hearing, balance, and vision. This helps explain how the ADGRV1 gene supports hearing and vision in everyday life.
The ADGRV1 gene helps certain cells attach to nearby structures and sense their surroundings. Its protein sits at the cell surface, where it supports contact between cells and passes along signals that help tissues stay organized.
In the inner ear, this gene helps build and maintain tiny links between hair-like cell projections. These links keep the bundles aligned so sound and movement can be turned into clear nerve signals.
In the retina, the ADGRV1 gene helps light-sensing cells keep their outer parts arranged correctly. It is part of a protein group near the base of these cells that supports their structure and everyday function.
What is a variant?
A genetic variant is a minor difference in the DNA sequence within a gene. These differences are common and help shape normal human diversity, including variation in appearance, metabolism, and the way the body responds to environmental factors. Many do not produce any noticeable effects and are simply part of natural genetic variation. Sometimes, though, a variant changes how a gene works more significantly and can contribute to or lead to a genetic condition.
Genetic variants
What if the gene does not work
Variants in the ADGRV1 gene can change how the ADGRV1 receptor is built, folded, or delivered to the cell surface, which helps explain how ADGRV1 variants affect protein function. More disruptive variants may truncate the protein or stop it from being made, leading to a larger loss of signaling and weaker interactions with partner proteins. Milder variants can leave some activity in place. In people with two disease causing variants, this difference in functional impact can influence how clearly and how early features of Usher syndrome type 2 appear.
How variants are linked to conditions
Pathogenic variants in the ADGRV1 gene most often cause Usher syndrome type 2C, an inherited condition that combines congenital or early hearing loss with a progressive eye condition called retinitis pigmentosa. In this setting, ADGRV1 gene variants linked to Usher syndrome are usually inherited from both parents. Some studies have explored links with other findings, but Usher syndrome type 2C is the main well-established condition associated with this gene.
A variant is not necessarily a diagnosis
Many genetic variants are a routine part of human biology and are widespread in the general population. Most do not have a direct effect on health and simply reflect natural human diversity. For many genes, carrying a variant associated with a condition suggests a possible link rather than a definite diagnosis, especially when several genes and environmental factors also contribute. In some situations, however, a single well-characterized variant in a particular gene is enough to confirm a diagnosis.
Are there things that can increase or change my risk?
There is not yet broadly confirmed evidence on specific factors that increase or reduce health risks related to the ADGRV1 gene. When ADGRV1-related conditions occur, risk is usually driven mainly by the genetic change itself rather than lifestyle or everyday exposures.
Inheritance of ADGRV1 variants
Variants in the ADGRV1 gene that cause a well-established inherited condition are passed down in an autosomal recessive pattern. This means a child usually inherits one nonworking copy from each parent, and parents who each carry one ADGRV1 gene variant are typically unaffected themselves. For families asking how ADGRV1 gene variants are inherited, each pregnancy between two carriers has a 25% chance of an affected child, a 50% chance of a carrier child, and a 25% chance of a child with two working copies.
What does my ADGRV1 result mean for my family?
For families, an ADGRV1 result is most often relevant in a recessive condition such as Usher syndrome. This usually means parents may be healthy carriers, and brothers and sisters could also be carriers or, in some families, may also have the condition. Other close relatives may carry the same gene change too, so the result can matter beyond one person.
Genetic information
Genetic testing
How you find out about variants
Genetic testing for ADGRV1 variants usually uses a blood sample or saliva sample to read the ADGRV1 gene and look for changes in its DNA code. Results may show a disease causing variant, a harmless variant, or a finding that is not yet clear, which can help explain whether ADGRV1 is involved.
When should I consider getting a genetic test?
Genetic testing for the ADGRV1 gene may be worth considering if you or your child has hearing loss together with night vision problems or a family history of Usher syndrome, a condition that affects hearing and sight. It can help show whether ADGRV1 is the cause and clarify chances for relatives.
A genetic result is only one part of your health story
A genetic result can provide meaningful insight, but how much it reveals depends on the condition and the type of variant involved. Over time, many factors shape how the body works, including lifestyle, environment, age, and medical history. For some conditions, especially those influenced by many genes, genetic information provides context rather than certainty and is best understood alongside other parts of care. In other situations, a genetic result may offer a clear answer. In areas such as medication response, genetic results can also help put individual experiences into perspective.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. Small differences in genes can change how the body breaks down a drug, moves it through the bloodstream, or responds at the drug’s target. This helps explain why the same treatment may work well for one person, have less effect in another, or cause more side effects in someone who is more sensitive to it. These differences are common and are one part of why medication response varies from person to person.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences shape the way someone responds to medications. It focuses on connections between genes and drugs to help explain why the same treatment can work differently from one person to another. With many medicines, genes influence either how strongly a drug works or how the body handles it. This information can help support treatment decisions that are more informed and tailored to the individual. For a closer look at this topic, you can learn more in the LearnHub.
Drugs influenced by the ADGRV1 gene
When should I seek medical advice?
There isn't yet a broadly confirmed role for this gene in predicting how medicines will work or cause side effects. Questions about medications, side effects, or changes in treatment are best discussed with your doctor or pharmacist.