The HGF gene gives your body instructions for making a signaling protein that helps cells grow, move, and heal. This gene helps your body repair tissues after injury and supports the normal development of organs, blood vessels, and nerves. If it does not work properly, development and tissue repair may be affected, and some inherited variants are linked to hearing loss. In some cancers, higher HGF activity can support tumor growth and spread.
What is a gene?
A gene is a stretch of DNA that gives your cells instructions to make molecules or to direct processes in the body. Some genes hold the instructions for producing proteins, the working parts of cells. Others mainly regulate when certain processes happen, where they happen, and how strongly they are carried out. Together, genes affect how the body develops and works, and they can influence how you respond to food, stress, or medications. For a more detailed look at this subject, you can learn more in the LearnHub.
Overview
HGFGene function
What if the gene works
The HGF gene helps make a signal that supports cell growth, movement, and tissue repair. It is important in development and healing after injury.
Risk
What if the gene does not work
Some people with variants in the HGF gene develop inherited hearing loss, often starting at birth or in early childhood. Milder and more severe variants can influence when it begins and how much hearing is reduced.
Treatment
What does that mean for your treatment
No HGF-specific treatment or drug selection approach is currently established for people with a pathogenic variant in the HGF gene. HGF is being studied, mainly through the HGF/MET pathway, as a biomarker and potential drug target in some cancers.
Conditions associated with HGF
Gene function
What if the gene works
In daily life, the HGF gene helps your body build, maintain, and repair tissues. It provides instructions for a signaling protein that tells certain cells when to grow, move, and stay alive. This helps explain how the HGF gene supports tissue repair and healthy cell growth.
The HGF gene helps certain cells grow and divide when new tissue is needed. This controlled signal supports normal development and ongoing renewal.
Its protein encourages cells to move to the places where they are needed. That movement helps tissues form their normal layout and cover areas that need repair.
HGF signals help cells arrange themselves into organized, working tissue patterns. This is important when developing tissues create branching shapes that later become part of healthy organs.
The HGF gene also supports cell survival during repair and routine stress. By keeping useful cells active, it helps tissues recover in a steady way.
What is a variant?
A genetic variant is a slight change in the DNA sequence within a gene. These changes are common and are part of normal human diversity, including differences in appearance, metabolism, or how the body responds to environmental influences. Many variants do not have any noticeable effect and simply represent natural genetic variation. In some cases, however, a variant can more substantially 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 HGF gene can change how much HGF protein a cell makes or how well that protein is processed, released, and attached to its partner receptor. This is how HGF gene variants affect protein function at the cell level. Some are milder and only partly lower signaling, while more severe variants can greatly reduce protein activity or make the protein unstable. Variants in control regions may also alter when and where cells produce HGF.
How variants are linked to conditions
Pathogenic variants in the HGF gene can cause a rare inherited form of hearing loss called DFNB39. In practical terms, HGF gene variants linked to hearing loss usually affect hearing on their own rather than as part of a wider condition, though the degree of hearing loss can vary from person to person.
A variant is not necessarily a diagnosis
Genetic variants are a routine part of human biology and are widely present in the general population. Most do not have a direct effect on health and simply reflect normal human variation. For many genes, carrying a variant associated with a condition indicates a possible link rather than a certain diagnosis, especially when several genes and environmental factors play a role. In some situations, though, a single well understood 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 HGF gene itself. If testing has found a change in HGF, a doctor or genetic counselor can explain what that result may mean for your personal and family risk.
Inheritance of HGF variants
For the best-known condition linked to the HGF gene, inherited hearing loss, HGF gene variants are inherited in an autosomal recessive pattern. This means a child usually needs to inherit one changed copy from each parent to be affected. When both parents carry an HGF gene variant, each pregnancy has a 25% chance of an affected child, a 50% chance of a child who is a carrier, and a 25% chance of a child who inherits neither variant. This is the main way how HGF gene variants are inherited in families.
What does my HGF result mean for my family?
For HGF, the clearest inherited condition is a rare form of hearing loss that usually appears when a child inherits a changed copy from each parent. This often means the parents are healthy carriers, and brothers or sisters may also have hearing loss or be carriers. Other relatives can sometimes be carriers too, which may matter for family planning.
Genetic information
Genetic testing
How you find out about variants
To look for changes in the HGF gene, genetic testing for HGF variants usually analyzes DNA from a blood sample, saliva, or a cheek swab. A lab reads the gene’s code and compares it with the usual sequence to identify variants. Results may show no variant, a known health linked variant, or a change whose meaning is still unclear.
When should I consider getting a genetic test?
You might consider genetic testing for the HGF gene if you or your child has unexplained hearing loss, especially if it started early in life or runs in the family. Rare changes in HGF can be one cause of inherited hearing loss, and testing may help clarify whether it is part of the picture.
A genetic result is only one part of your health story
A genetic result can provide useful insight, but how much it explains varies by the condition and the type of variant involved. Over time, factors such as lifestyle, environment, age, and medical history also shape how the body works. For some conditions, especially those influenced by many genes, genetic information provides context rather than certainty and is most useful when considered alongside other parts of care. In other situations, a genetic result can offer a clear answer. In areas like medication response, it can also help put personal experiences into context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. A treatment that helps one person may work less well in another, or may cause more side effects, because the body can absorb, break down, or respond to a drug in different ways. These differences are common and are one reason medication response is not the same for everyone. In some cases, genetic results can help explain why a medicine feels too strong, not strong enough, or simply does not work as expected.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences can affect a person’s response to medications. By looking at the links between genes and drugs, it helps explain why the same treatment may work differently from one person to another. For many medicines, genes can influence both how strongly a drug works and how the body processes it. This information can support more informed, more individualized treatment decisions. You can read more about this topic in the LearnHub.
Drugs influenced by the HGF gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choice or dosing, so questions about side effects, new symptoms, or how your medicines may affect you are best discussed with your doctor.
History
The HGF gene came into view in the 1980s, when researchers studying liver regeneration identified a growth signal in blood and platelets. Around the same time, other teams described a seemingly different factor that made cells spread and move, called scatter factor. Building on this early work, scientists later showed these findings pointed to the same molecule, which linked separate areas of research into one story. In the 1990s, the HGF gene and its receptor, MET, became important in cancer biology and tissue repair research. Over time, descriptions became more precise as genetic and cell studies clarified how this pathway was involved in development and disease. This history helped place the HGF gene among the better known signaling genes in modern biomedical research.