The FAM83A gene helps cells pass along growth and survival signals, especially in tissues that regularly renew themselves. If it does not work normally, these signals can become unbalanced, which may let cells keep growing when they should slow down. In medicine, this gene is important because higher FAM83A activity has been linked to several cancers, including some breast and lung cancers. FAM83A is mainly known from cancer research rather than from widely used consumer genetic testing.
What is a gene?
A gene is a stretch of DNA that gives your cells information they can use to make molecules or regulate processes in the body. Some genes carry the instructions for producing proteins, which are the working parts of cells. Others mainly help control when certain processes happen, where they happen, and how strongly they occur. Taken together, genes affect how the body grows and works, and they can also influence how you respond to food, stress, or medications. For a deeper look at this topic, you can read more in the LearnHub.
Overview
FAM83AGene function
What if the gene works
The FAM83A gene helps organize cell signals that support normal cell growth and survival. Its protein works near the cell membrane and may influence how cells respond to growth cues.
Risk
What if the gene does not work
If the FAM83A gene does not work normally, cell signaling linked to growth and survival can become altered. Milder variants may change this signaling slightly, while more severe variants can disrupt how cells pass along these messages.
Treatment
What does that mean for your treatment
For pathogenic variants in the FAM83A gene, no gene-specific treatment or management approach is currently established in clinical guidelines. The FAM83A gene is being studied as a possible cancer biomarker and drug target, including in research on resistance to some EGFR targeted treatments.
Gene function
What if the gene works
Inside your cells, the FAM83A gene helps organize signaling, the chemical messaging that tells cells how to behave. It supports routine growth and survival messages by helping key proteins meet in the right place. Understanding what the FAM83A gene does in cells makes its day to day role easier to picture.
The FAM83A gene helps arrange signaling proteins so messages can be passed along in an orderly way. This lets cells respond to routine cues from their surroundings.
Its protein helps place certain signaling partners in the right part of the cell, especially near the cell membrane. This setup supports smooth communication between cell surface sensors and the cell interior.
Many cells use FAM83A related signals as part of normal instructions for growth, division, and staying active. Its protein helps these messages connect with the wider signaling network.
What is a variant?
A genetic variant is a minor difference in the DNA sequence within a gene. These differences are common and are part of normal human diversity, including variation in appearance, metabolism, and the way 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 works more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the FAM83A gene can change the FAM83A protein’s shape, stability, or ability to bind other signaling proteins inside the cell. This explains how variants influence the FAM83A gene's function at a molecular level. Milder variants may only partly weaken these interactions, while more severe variants can shorten the protein, make it break down sooner, or disrupt where it sits in the cell. These differences can lead to a range of cellular effects rather than one fixed outcome.
How variants are linked to conditions
The FAM83A gene does not yet have a broadly confirmed link to a specific inherited health condition, though research on how variants in the FAM83A gene are linked to health conditions is still evolving. Anyone with a confirmed finding involving the FAM83A gene should use guidance from their doctor or genetic counselor to understand what it may mean for their own health and family.
A variant is not necessarily a diagnosis
Genetic variants are a common and normal part of human biology in the general population. Most do not directly affect health and simply reflect natural human diversity. In many genes, carrying a variant associated with a condition suggests a possible link rather than a certain diagnosis, especially when several genes and environmental factors also contribute. In some situations, though, a single well-characterized variant in a specific gene can be 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 FAM83A gene. If a test result mentions FAM83A, the overall picture usually depends on the exact change, your personal health history, and your family history.
Inheritance of FAM83A variants
There is not yet a broadly confirmed, disease-specific Mendelian pattern for inheritance of the FAM83A gene variants, so FAM83A gene inheritance is not described as clearly autosomal dominant, autosomal recessive, or X linked. FAM83A is located on chromosome 8, which is an autosome. That means you inherit one copy of the FAM83A gene from each parent.
What does my FAM83A result mean for my family?
There is not yet a broadly confirmed inheritance pattern tied to a specific health condition for FAM83A, and this understanding may change as research grows. If you have a specific FAM83A result and want to know what it could mean for your relatives, a doctor or genetic counselor can help explain it in the context of your family history.
Genetic information
Genetic testing
How you find out about variants
Genetic testing for FAM83A variants usually uses a blood or saliva sample, then reads the DNA sequence and compares it with the usual pattern to look for changes. Results may show a benign variant, a variant linked to a health condition, or a variant of uncertain significance, which means its effect is not yet clear.
When should I consider getting a genetic test?
There is not yet a broadly established reason to order genetic testing just for the FAM83A gene. Testing decisions are usually based on your own health history, family history, and advice from a doctor or genetic counselor.
A genetic result is only one part of your health story
A genetic finding can provide useful insight, but how much it explains depends on the condition and on the type of variant involved. Many factors, including lifestyle, environment, age, and medical history, shape how the body works over time. For some conditions, especially those influenced by many genes, genetic information provides context rather than certainty and is best understood together with other parts of care. In other situations, a genetic finding may offer a clear answer. In areas such as 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. Some people break down a drug more slowly or more quickly, while others may be more or less sensitive to its effects. This kind of difference is common and can help explain why the same treatment works well for one person but less well for another. It can influence both how much benefit someone gets and the chance of side effects.
What is Pharmacogenetics?
Pharmacogenetics looks at how differences in a person’s genes can shape their response to medications. By examining the relationship between genes and drugs, it helps explain why the same treatment may work differently from one person to another. For many medicines, genes can affect how strongly a drug works or how the body handles it. This information can support more informed, more personalized treatment decisions. For a closer look at this topic, you can read more in LearnHub.
Drugs influenced by the FAM83A gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medicine choice or response, so questions about side effects, treatment changes, or your overall health are best discussed with your doctor. FAM83A has been studied in cancer research because increased activity may be linked to resistance to some targeted treatments, but this is not part of routine prescribing.