The VEGFA gene helps control how new blood vessels grow, which supports oxygen delivery, healing, and normal development. Your body relies on this gene to repair tissues after an injury and to support blood flow in places like the placenta and the eyes. If this gene is not working properly, some tissues may not get the blood supply they need, which can affect growth, development, or healing. Changes in VEGFA activity are also linked to conditions with unusual blood vessel growth, including some eye diseases and cancers.
What is a gene?
Genes are pieces of DNA that carry instructions your cells use to make molecules or regulate activities in the body. Some genes provide the information needed to produce proteins, which are the working parts of cells. Others mainly help determine when certain processes happen, where they take place, and how strongly they operate. Taken together, genes affect how the body develops and works, and they can also shape how you respond to food, stress, or medications. For a more detailed look at this topic, you can find more in the LearnHub.
Overview
VEGFAGene function
What if the gene works
The VEGFA gene helps make a signal protein that guides blood vessel growth. It supports wound healing and helps tissues get oxygen and nutrients.
Risk
What if the gene does not work
Changes in the VEGFA gene can range from milder to more severe and may lower how much VEGFA signal a cell makes or releases. This can weaken blood vessel growth signals and alter vessel leakiness between cells.
Treatment
What does that mean for your treatment
No VEGFA-specific treatment or drug selection approach is currently established for people with a pathogenic or loss-of-function variant in the VEGFA gene. The VEGFA gene is a well known drug target in cancer and retinal disease, and VEGFA variants have been studied as possible markers of response to anti-VEGF medicines, but this has not led to guideline-based care based on inherited VEGFA variants.
Gene function
What if the gene works
Your body uses the VEGFA gene to help tissues get the blood supply they need. It is especially active when growing or healing tissue needs more oxygen and nutrients. This is part of how the VEGFA gene supports blood vessel growth in normal daily body function.
The VEGFA gene sends signals that tell nearby blood vessel cells to start forming new vessels. This helps expanding or healing tissue build the circulation it needs.
Its protein acts on endothelial cells (the thin inner lining of blood vessels). It helps these cells grow, move, and arrange themselves into working vessel walls.
Cells can raise VEGFA activity when oxygen levels drop. This helps bring more blood flow to areas that need extra oxygen and nutrients.
By supporting a healthy network of vessels, the VEGFA gene helps tissues receive oxygen and nutrients from the bloodstream. This supports normal growth, repair, and everyday organ function.
What is a variant?
Small changes in the DNA sequence of a gene are called genetic variants. They are common and help explain normal human diversity, such as differences in appearance, metabolism, or the body’s response to environmental influences. Many have no noticeable effect and are simply part of natural genetic variation. At times, though, a variant can more strongly change how a gene functions and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the VEGFA gene can change how much VEGFA protein a cell makes, which version is produced through RNA splicing, or how well the protein binds its partner receptors and nearby tissue. When people look up how VEGFA gene variants affect cell signaling, the main issue is usually altered protein amount or weaker, less stable signaling. Some variants have mild effects on gene activity, while more severe variants can markedly reduce protein production or disrupt key binding regions.
How variants are linked to conditions
Broadly confirmed health conditions linked to variants in the VEGFA gene have not been established, although research on possible associations is ongoing and may evolve. If you have a confirmed change in the VEGFA gene, your doctor or genetic counselor can explain what it may mean in the context of your own health and family history.
A variant is not necessarily a diagnosis
Variants in genes are a normal feature of human biology and are widely found in the general population. Most do not have a direct effect on health and instead reflect natural human diversity. For many genes, carrying a variant associated with a condition indicates a possible link rather than a definite diagnosis, especially when several genes and environmental factors contribute. In some situations, though, a single well-characterized variant in a specific 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 risk related to the VEGFA gene itself. Many common VEGFA changes are thought to slightly influence risk rather than determine it, and overall risk is also shaped by age, smoking, blood pressure, diabetes, and other genes.
Inheritance of VEGFA variants
There is not yet a broadly confirmed, disease-associated Mendelian pattern for the VEGFA gene, so VEGFA gene inheritance is not described in the same clear way as genes that cause a specific inherited condition. Most findings involving this gene relate to differences in risk or traits rather than a single condition passed down in a predictable dominant or recessive pattern. The VEGFA gene is located on chromosome 6, which is an autosome, so you inherit one copy from each parent.
What does my VEGFA result mean for my family?
There is not yet a broadly confirmed inherited pattern tied to one specific VEGFA-related condition in the way seen with some single-gene conditions. If you have a VEGFA result and want to know what it could mean for relatives, the meaning usually depends on the exact change found and the health issue being looked at.
Genetic information
Genetic testing
How you find out about variants
To find variants in the VEGFA gene, VEGFA genetic testing uses a blood or saliva sample. A lab reads the gene's DNA code and looks for changes linked to a health condition or treatment response. Results show whether a variant was found, but they do not by themselves predict exactly how your health will be affected.
When should I consider getting a genetic test?
There is not yet a broadly established, VEGFA-specific reason to get genetic testing as part of routine care. Testing decisions are usually based on your overall health picture and family history, with guidance from a doctor or genetic counselor.
A genetic result is only one part of your health story
A genetic result can provide useful insight, but how much it reveals depends on the condition and the specific type of variant involved. Over time, many factors, including lifestyle, environment, age, and medical history, influence how the body functions. For some conditions, especially those shaped by many genes, genetic information provides context rather than certainty and is best considered together with other parts of care. In other situations, a genetic result may offer a clear answer. In areas like medication response, genetic results can also help put individual experiences into context.
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 body, or responds to it at its target. Because of this, the same medication may work better 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 of several reasons treatment response varies from person to person.
What is Pharmacogenetics?
Pharmacogenetics looks at how differences in a person’s genes can affect the way medications work. It examines links between genes and drugs to better understand why the same treatment can have different effects from one person to another. For many medicines, genes can influence either how strongly a drug works or how the body processes it. This information can help support more informed and personalized treatment decisions. You can read more about this topic in the LearnHub.
Drugs influenced by the VEGFA gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medicine choices, so general concerns about symptoms or medicines are best discussed with your doctor. VEGFA has been studied for possible links to response and side effects with some anti-VEGF cancer and eye treatments, but the findings are not consistent enough to guide routine care.
History
Interest in the VEGFA gene grew as scientists worked to explain how the body builds new blood vessels in health and disease. In the 1970s and 1980s, research on tumor blood supply helped set the stage for its discovery. Building on this early work, scientists identified vascular endothelial growth factor in 1989, and the VEGFA gene soon became a major focus of cancer and eye research. This period helped shift medicine toward the idea that blocking blood vessel growth could be a useful treatment strategy. In the years that followed, anti VEGF medicines changed care for conditions such as wet age related macular degeneration and several cancers. The way this gene was viewed has shifted over time, from a research clue to a central part of modern targeted therapy.