The AXL gene gives cells instructions for a surface protein that helps control growth, movement, healing, and the cleanup of damaged cells. If this signaling does not work properly, cells may respond to injury or inflammation in less controlled ways. Many clinicians pay attention to this gene in cancer research because higher AXL activity has been linked to tumor spread and reduced response to some treatments. Unlike genes such as BRCA1, the AXL gene is not widely known in everyday public discussions.
What is a gene?
A gene is a stretch of DNA that carries instructions your cells use to make molecules or direct processes in the body. Some genes provide the code for proteins, which are the active parts of cells. Others mostly regulate when certain processes happen, where they happen, and how active they are. Taken together, genes affect how the body grows and works, and they can influence how you respond to food, stress, or medicines. For a deeper look at this topic, you can find more in the LearnHub.
Overview
AXLGene function
What if the gene works
The AXL gene helps cells receive growth and survival signals from their surroundings. It supports normal cell movement, cleanup of dying cells, and immune balance.
Risk
What if the gene does not work
Milder to more severe variants in the AXL gene can weaken or block cell surface signaling that helps cells survive, move, and clear debris. This mainly disrupts communication between cells and immune cells.
Treatment
What does that mean for your treatment
No AXL-specific treatment or management approach is currently established for people with a pathogenic or loss-of-function variant in the AXL gene. In research settings, AXL is being studied as a drug target and biomarker in several cancers, where higher AXL activity may be linked to treatment resistance and is guiding trials of AXL-blocking drugs.
Gene function
What if the gene works
Your cells use the AXL gene to receive outside signals and turn them into organized actions inside the cell. It is especially involved in cell survival, movement, and a measured immune response. Understanding what the AXL gene does in the body helps explain how tissues stay coordinated from day to day.
The AXL gene makes a cell surface receiver that picks up signals from nearby proteins, especially GAS6. This lets cells turn outside messages into internal instructions.
Signals through the AXL gene help cells stay active during routine stress and normal tissue upkeep. This supports steady day to day cell function.
AXL signaling helps cells change shape, attach, and move when tissues are forming or renewing. This helps place cells where they are needed.
In some immune cells, the AXL gene helps tone down inflammatory signaling and supports cleanup of dying cells. This helps keep immune activity more controlled.
What is a variant?
A genetic variant is a small difference in the DNA sequence within a gene. These differences are common and are part of normal human diversity, such as variation 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 situations, though, a variant can change how a gene functions more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Changes in the AXL gene can alter the AXL protein’s shape, stability, or signaling strength, which is central to how AXL gene variants affect protein function. Some variants mildly reduce how well the protein folds, reaches the cell surface, or passes signals inside the cell. More severe variants can sharply lower or stop its enzyme activity, while some changes may make signaling more active than usual or alter how the protein binds to partner molecules.
How variants are linked to conditions
AXL does not yet have a broadly confirmed link to a specific inherited health condition, although research on how AXL gene variants are linked to conditions is still evolving. If you have a reported variant in the AXL 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 routine part of human biology and are widely present in the general population. Most have no 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 are involved. In some situations, though, a single well understood variant in a specific gene is enough to confirm the 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 AXL gene itself. Anyone with concerns about personal or family risk can discuss this with a doctor or genetic counselor.
Inheritance of AXL variants
How AXL gene variants are inherited is not tied to one broadly confirmed disease pattern at this time, and the inheritance picture may become clearer as research develops. The AXL gene is on chromosome 19, which is an autosome, so you inherit one copy from each parent. In general, variants in autosomal genes can be passed from either parent to a child, regardless of sex.
What does my AXL result mean for my family?
There is not yet a broadly confirmed, single inherited condition linked to the AXL gene in the way seen with some other genes. If you have a specific AXL result and want to understand what it could mean for relatives, a doctor or genetic counselor can explain it in the context of your personal and family history.
Genetic information
Genetic testing
How you find out about variants
To find out whether you carry a change in the AXL gene, a lab can test DNA from blood, saliva, or a cheek swab. How genetic testing for AXL variants works is simple: the lab reads the gene’s DNA code and compares it with a reference sequence. Results may show a harmless change, an unclear finding, or a disease-causing variant.
When should I consider getting a genetic test?
There isn't yet a broadly established, AXL-specific clinical reason for testing. Decisions about genetic testing are usually based on your personal health history, family history, and the broader set of genes linked more clearly to inherited conditions.
A genetic result is only one part of your health story
Genetic results can be informative, but the amount they reveal varies by the condition and the specific type of variant. Over time, the body is shaped by many influences, including lifestyle, environment, age, and medical history. With some conditions, particularly those affected by many genes, genetic information serves more as context than certainty and is best considered together with other parts of care. In other situations, a genetic result can give a clear answer. For areas such as medication response, these results can also help place personal experiences in 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 body, or responds to it at the target it is meant to affect. 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.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences affect a person’s response to medicines. By looking at links between genes and medications, it helps explain why the same treatment may work differently from one person to another. For many drugs, genes can influence both how strongly a medicine works and how the body handles it. This information can support more informed, more individualized treatment decisions. More detail on this topic is available in the LearnHub.
Drugs influenced by the AXL gene
When should I seek medical advice?
There isn’t yet a broadly confirmed role for this gene in guiding routine medication choices, so questions about medicines, side effects, or treatment changes are best discussed with your doctor. AXL has been studied in cancer research because activity in the AXL gene may affect how some cancer treatments work, but this is not a standard guide for everyday prescribing.
History
The AXL gene entered research in the early 1990s, when scientists identified it while studying cells from a person with leukemia. It was recognized as part of a growing group of genes linked to cell signaling and cancer development. From these first observations, research expanded steadily. Over time, the AXL gene drew wider interest as studies connected it to tumor spread, resistance to some cancer treatments, and later to certain viral infections. Its history is mainly a scientific one rather than a public story, but it has become an important marker in modern cancer research. These discoveries helped place the AXL gene among the better-known targets being explored in precision medicine.