The FAM83G gene helps cells pass along growth and repair signals, especially in tissues like skin and hair. This gene plays an important role in keeping the outer layer of skin and hair follicles working in a balanced way. If it does not work properly, some people may develop very thick skin on the palms and soles, changes in hair growth, or other features affecting skin, nails, and related tissues. FAM83G is mainly discussed in genetics and dermatology, rather than in popular culture.
What is a gene?
Genes are stretches of DNA that carry instructions your cells use to make molecules or regulate activities in the body. Some genes provide the directions for producing proteins, which do much of the cell’s work. Others mainly control when certain processes take place, where they happen, and how active they are. Taken together, genes affect how the body develops and functions, and they can also shape how you respond to food, stress, and medications. To explore this topic in more detail, you can learn more in the LearnHub.
Overview
FAM83GGene function
What if the gene works
The FAM83G gene helps cells send growth and shape signals, including in skin and hair. Its protein works with cell signaling networks that support normal tissue development and maintenance.
Risk
What if the gene does not work
Some FAM83G gene variants are linked to thickened skin on the palms and soles and unusually thick scalp hair. Effects can range from milder to more noticeable, depending on how strongly the variant changes gene function.
Treatment
What does that mean for your treatment
No FAM83G-specific treatment or management approach is currently established for pathogenic variants in the FAM83G gene. The FAM83G gene is being studied in cancer biology as a possible biomarker and drug target, but this has not led to guideline-based treatment choices.
Gene function
What if the gene works
Inside your cells, the FAM83G gene helps coordinate routine communication and structure. Its protein brings certain cell partners together, which supports orderly signaling and the cell’s internal framework. Understanding how the FAM83G gene works in cells helps explain how tissues keep their shape and respond to normal growth signals.
The FAM83G gene helps organize signaling proteins inside cells. Its protein acts as a scaffold, meaning it helps bring protein partners together in the right place for steady cell communication.
One of its main roles is to support Wnt signaling, a communication pathway that helps guide growth and tissue patterning. This helps cells respond to normal developmental and maintenance cues in an orderly way.
FAM83G also helps organize the actin skeleton, the inner framework that gives cells shape. This supports how cells spread, attach, and move in a coordinated way during normal tissue upkeep.
What is a variant?
A genetic variant is a small difference in the DNA sequence within a gene. Variants are common and are one reason people naturally differ from one another, including in appearance, metabolism, and how the body responds to environmental influences. Many have no noticeable effect and simply reflect normal genetic variation. Sometimes, however, a variant has a larger effect on how a gene works and may contribute to, or even cause, a genetic condition.
Genetic variants
What if the gene does not work
Variants in the FAM83G gene can change the PAWS1 protein’s shape, stability, or ability to bind partner proteins, especially CK1α, which can disrupt cell signaling and how skin cells organize. In practice, how do variants influence the FAM83G gene’s function depends on the change itself: milder variants may partly weaken these protein interactions, while more severe variants can sharply reduce protein stability or block key binding sites. In associated skin conditions, stronger functional disruption may be linked to earlier or more marked features.
How variants are linked to conditions
Pathogenic variants in the FAM83G gene are best known for causing a rare inherited form of palmoplantar keratoderma, with thickened skin on the palms and soles. Some people also have extra thickening around the fingers or toes and unusually full scalp hair. In families with a FAM83G gene link to palmoplantar keratoderma, finding a pathogenic variant can confirm the diagnosis.
A variant is not necessarily a diagnosis
Genetic variants are common in the general population and are a normal feature of human biology. Most do not directly affect 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-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 FAM83G gene. If a change in FAM83G has been found in you or your family, a doctor or genetic counselor can help explain what it may mean for your personal risk.
Inheritance of FAM83G variants
There is not yet a broadly confirmed, single disease inheritance pattern for how FAM83G gene variants are inherited in people, and this picture may become clearer as research develops. When people look up how FAM83G variants are inherited, the most reliable point is that the FAM83G gene sits on chromosome 17, which is an autosome. That means you inherit one copy of the FAM83G gene from each parent, regardless of sex.
What does my FAM83G result mean for my family?
There is not yet a broadly confirmed inheritance pattern tied to a specific health condition for FAM83G. Research on this gene is still developing, so what a result means for relatives can depend a lot on the exact change found and why testing was done. A doctor or genetic counselor can help explain what, if anything, it may mean for your family.
Genetic information
Genetic testing
How you find out about variants
To look for changes in the FAM83G gene, genetic testing for FAM83G variants usually uses a blood or saliva sample. A lab reads the DNA sequence and checks for differences from the usual gene code. Results may show no variant, a benign variant, or a variant that needs clinical interpretation.
When should I consider getting a genetic test?
Testing for the FAM83G gene may be worth discussing if you or your child has unexplained inherited thickening of the skin on the palms and soles, sometimes along with unusual scalp hair growth. It can also help when these skin changes run in the family and a doctor is trying to confirm the cause.
A genetic result is only one part of your health story
A genetic result can provide meaningful insight, but how much it reveals varies based on the condition and the type of variant involved. Many factors, including lifestyle, environment, age, and medical history, shape how the body functions over time. 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 may offer a clear answer. In areas such as medication response, genetic results can help put individual experiences into context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. This helps explain why the same treatment works well for one person but less well for another, or why some people are more sensitive to side effects. Part of the difference comes from how the body absorbs, breaks down, and uses a drug. These genetic differences are common and are one of several factors, along with age, other health conditions, and other medicines, that can shape treatment response.
What is Pharmacogenetics?
Pharmacogenetics examines how differences in a person’s genes can affect the way medications work. It looks at links between genes and drugs to help 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 handles it. This information can support treatment decisions that are more informed and more individualized. More on this topic is available in the LearnHub.
Drugs influenced by the FAM83G gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding how medicines are chosen or used. If you have questions about side effects, how well a treatment is working, or possible drug interactions, talk with your doctor or pharmacist.
History
Initially cataloged during work to map the FAM83 family of genes, the FAM83G gene drew scientific interest after animal studies linked related changes to unusual hair growth and skin findings. From these first observations, research expanded steadily. Later reports identified variants in the human FAM83G gene in families with inherited hair overgrowth, which helped confirm its medical relevance. As DNA sequencing became more widely used, researchers could compare affected families more precisely and connect older clinical descriptions with a specific gene. The way this gene was viewed has shifted over time, from a little known family member to a recognized part of research on rare inherited hair conditions.