Your cells depend on this gene when they need to show immune cells that they belong in the body. The CD47 gene makes a surface protein that acts like a “do not remove” signal, helping protect blood cells and supporting cell movement and tissue repair. If it does not work properly, some cells may be cleared too easily, which can affect blood cell survival and other body processes. In medicine, CD47 is best known as a target in cancer research because some tumors use this signal to avoid immune attack.
What is a gene?
A gene is a section of DNA that carries instructions your cells use to make molecules or regulate processes in the body. Some genes hold the instructions for making proteins, the functional parts of cells. Others mainly control when certain processes happen, where they happen, and how strongly they occur. Together, genes affect how the body develops and works, and they can influence how you respond to food, stress, or medicines. For a deeper look at this topic, you can learn more in LearnHub.
Overview
CD47Gene function
What if the gene works
The CD47 gene helps cells send a self signal, which reduces removal by immune cells. It also supports how cells stick, move, and respond to nearby signals.
Risk
What if the gene does not work
If the CD47 gene does not work properly, red blood cells may lose Rh complex support and some normal self-protection signals. Milder variants may have little effect, while more severe variants can cause the rare Rh-null phenotype with hemolytic anemia.
Treatment
What does that mean for your treatment
No treatment or drug choice guidance specific to a pathogenic or loss of function variant in the CD47 gene is currently established. Separately, CD47 is an active cancer drug target under study, and medicines that block the CD47 signal may help immune cells recognize and remove tumor cells.
Gene function
What if the gene works
Your cells use the CD47 gene to show they belong in the body and to communicate at their surface. Its protein helps control routine cell turnover and guides how cells interact with nearby cells and supporting tissue. This helps explain the CD47 gene’s role in the immune system and in everyday tissue upkeep.
CD47 places a self signal on the cell surface. When immune cleanup cells touch it, they are more likely to recognize that the cell should stay in place during normal tissue turnover.
Its protein helps cells attach to nearby cells and to the material around them. This supports controlled movement and positioning as tissues renew and blood cells travel through the body.
CD47 also works as a surface signaling partner. It helps cells adjust how strongly they respond to outside cues, supporting steady communication between blood cells, immune cells, and tissues.
What is a variant?
A genetic variant is a minor difference in the DNA sequence of a gene. These differences are common and help create normal human diversity, such as variation in appearance, metabolism, or the way the body responds to environmental influences. Many variants do not have any noticeable effect and are simply part of natural genetic variation. In some situations, however, a variant can change how a gene works more significantly and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
In terms of how variants influence the CD47 gene's function, some changes reduce protein stability or trafficking, so less CD47 reaches the cell surface. Other variants can alter the protein's shape and weaken its interaction with binding partners such as SIRPα. Milder variants may leave some activity in place, while more disruptive variants can greatly reduce or fully stop protein production.
How variants are linked to conditions
At this stage, the CD47 gene does not yet have a broadly confirmed link to a specific health condition, and research on CD47 gene variants and health conditions is still developing. If you carry a confirmed variant in the CD47 gene, its meaning is best interpreted alongside your personal and family history with your doctor or genetic counselor.
A variant is not necessarily a diagnosis
Genetic variants are common across the general population and are a normal feature of human biology. Most do not directly affect health and simply contribute to natural differences between people. For many genes, having a variant associated with a condition points to a possible link rather than a certain diagnosis, particularly when several genes and environmental influences also play a role. In other situations, though, one 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 risk related to the CD47 gene itself. Personal risk usually depends more on the particular health condition being considered, along with family history and other genetic and non-genetic factors.
Inheritance of CD47 variants
There is not yet a broadly confirmed, disease-specific Mendelian pattern for how CD47 gene variants are inherited, so the answer is still evolving as research grows. For people looking into how CD47 gene variants are inherited, it is most accurate to say that no single well-established dominant, recessive, or X-linked pattern is used clinically for CD47 at this time. The CD47 gene is located on chromosome 3, which is an autosome, so you inherit one copy from each parent.
What does my CD47 result mean for my family?
There is not yet a broadly confirmed family inheritance pattern for CD47 that is tied to one well-established genetic condition in the way some other genes are. If you have a specific CD47 result and want to know what it could mean for close relatives, a doctor or genetic counselor can explain it in the context of your exact finding and family history.
Genetic information
Genetic testing
How you find out about variants
To find out whether you carry a variant in the CD47 gene, a lab analyzes DNA from blood, saliva, or a cheek swab. Genetic testing for CD47 variants reads the gene's code and compares it with the usual sequence. Results may show no meaningful change, a benign variant, or one that needs clinical interpretation.
When should I consider getting a genetic test?
There isn't yet a broadly established, CD47-specific reason for genetic testing in routine care. Testing decisions are usually made with a doctor or genetic counselor based on your symptoms, family history, and whether a broader genetic workup is being considered.
A genetic result is only one part of your health story
Genetic results can provide useful information, although how much they reveal varies with the condition and the kind 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 offers context rather than certainty and is most helpful when considered alongside other parts of care. In other situations, a genetic result can provide 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 a person’s DNA can change how the body breaks down a drug, moves it through the body, or responds to it at the target tissue. This helps explain why the same medication may work well for one person, work less well for another, or cause more side effects in someone who is more sensitive to it.
What is Pharmacogenetics?
Pharmacogenetics focuses on how genetic differences affect the response to medications. It examines links between genes and drugs to better explain why the same treatment can work differently from one person to another. For many medicines, genes help shape both how strongly a drug works and how the body processes it. This information can support more informed, more individualized treatment decisions. If you want to explore this subject in greater detail, you can learn more in the LearnHub.
Drugs influenced by the CD47 gene
When should I seek medical advice?
There is not yet a widely confirmed role for this gene in guiding medication choices, so questions about medicines, side effects, or treatment changes are best discussed with your doctor. CD47 is being studied in cancer care because some newer treatments are designed to block its signal, but this has not led to routine gene-based prescribing.
History
The CD47 gene entered medical research through studies of cell surface proteins in the late 1980s and early 1990s. Scientists first identified CD47 in work on how cells attach to their surroundings and communicate with the immune system. In recent decades, awareness of this gene’s role has grown as researchers linked it to the way cells avoid being cleared by the body. Building on this early work, scientists uncovered more about the CD47 gene in cancer biology, where it became a major focus for new treatment strategies. Interest widened as drug development programs began targeting CD47 in clinical trials. These milestones made the CD47 gene an important part of the modern story of immunotherapy research.