The AMER1 gene helps control cell growth signals and supports normal bone and tissue development. When it does not work properly, some people develop a condition affecting bone growth, with unusually dense skull bones and possible changes in the face, hearing, or teeth. Acquired variants in the AMER1 gene are also found in some tumors, including Wilms tumor, a childhood kidney cancer.
What is a gene?
Genes are stretches of DNA that carry instructions your cells use to make molecules or regulate processes in the body. Some genes hold the directions for producing proteins, which are the functional parts of cells. Other genes mainly control when certain processes happen, where they happen, and how strongly they are carried out. Together, genes influence how the body develops and functions, and they can affect how you respond to food, stress, and medications. For a more detailed look at this topic, you can find additional information in the LearnHub.
Overview
AMER1Gene function
What if the gene works
The AMER1 gene helps control WNT signaling (a cell messaging system), which is important for bone growth and how cells grow and mature. It supports normal development, especially in bones and other body tissues.
Risk
What if the gene does not work
Variants that reduce function of the AMER1 gene can cause osteopathia striata with cranial sclerosis, with bone thickening, hearing loss, and developmental differences. Milder or more severe variants can affect which features appear and how pronounced they are.
Treatment
What does that mean for your treatment
No treatment, management, or drug selection approach specific to the AMER1 gene is currently established for people with a pathogenic variant or a variant that stops the gene from working normally. In research, the AMER1 gene is being studied in cancer biology and as a marker in some tumors, but this has not led to treatment choices in clinical guidelines.
Conditions associated with AMER1
Gene function
What if the gene works
Cells need careful control of growth signals as the body develops and renews itself. Understanding AMER1 gene function can make it easier to see how cells keep these messages in balance. The AMER1 gene mainly helps organize parts of the WNT signaling system, which guides growth, body patterning, and cell maturity.
The AMER1 gene helps control WNT signals, which tell cells when to grow, divide, or mature. This keeps everyday cell communication more balanced and well timed.
Its protein helps lower extra beta catenin, a messenger that carries WNT signals inside cells. By helping with this cleanup, cells can respond to growth cues in a more controlled way.
The AMER1 gene acts like an organizer that brings several signal control proteins together at the right place in the cell. This makes the WNT pathway work more smoothly and accurately.
During early development, AMER1 guided signaling helps cells take on the right roles in the right places. This supports normal shaping of tissues, including bones and other body structures.
What is a variant?
A genetic variant is a minor change in a gene’s DNA sequence. These changes are common and help shape normal human diversity, including differences in appearance, metabolism, and the way the body reacts to environmental influences. Many variants do not have any noticeable effect and are simply part of natural genetic variation. Sometimes, though, 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
Many AMER1 gene variants make the protein shorter, unstable, or absent, so cells lose part or most of its ability to regulate WNT signaling, a cell communication system. In discussions of how AMER1 gene variants affect cell signaling, milder variants may leave some activity, while more severe variants can remove it almost completely. This range in functional impact can influence how strongly AMER1 related features appear and, in some people, how early they are noticed.
How variants are linked to conditions
Pathogenic variants in the AMER1 gene cause osteopathia striata with cranial sclerosis, a rare inherited condition that affects bone growth, especially in the skull and long bones. This condition linked to variants in the AMER1 gene can also be associated with hearing loss, vision problems, dental differences, cleft palate, and developmental concerns. Features vary widely, so some people have mild findings while others need closer medical follow up.
A variant is not necessarily a diagnosis
Genetic variants are a normal feature of human biology and are common in the general population. Most do not have a 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 also play a role. In some situations, however, 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?
For AMER1, there is no broadly confirmed evidence that specific lifestyle or environmental factors clearly increase or reduce the chance of having an AMER1-related condition. Risk is mainly tied to whether a disease-causing change in the AMER1 gene is present, while the exact features can still vary from one person or family to another.
Inheritance of AMER1 variants
AMER1-related conditions are usually inherited in an X-linked dominant pattern. In practical terms, AMER1 gene inheritance differs for mothers and fathers: a mother carrying a disease-causing variant can pass it to sons or daughters, while a father carrying the variant passes it to all daughters and not to his sons. Some cases happen because of a new, de novo variant rather than one inherited from a parent. In some families, the effects can be more severe in males.
What does my AMER1 result mean for my family?
A disease-causing change in the AMER1 gene is usually passed down in an X-linked pattern, so close relatives may also carry the same change. Parents, brothers, sisters, and children can sometimes be affected, although the signs can be quite different from one family member to another, and males are often more severely affected. If a parent carries the change, each child has a 1 in 2, or 50%, chance of inheriting it.
Genetic information
Genetic testing
How you find out about variants
Variants in the AMER1 gene are found with genetic testing, usually from a blood or saliva sample. AMER1 genetic testing for gene variants may read only this gene or many genes at the same time. Results can show a benign variant, a pathogenic variant, or a variant of uncertain significance.
When should I consider getting a genetic test?
Consider AMER1 genetic testing if you or your child has a pattern of unusually dense bones in the skull, long thin lines seen on bone X-rays, hearing loss, facial differences, or a family history of these findings. Testing can help confirm an inherited bone condition linked to AMER1 and clarify risks for relatives.
A genetic result is only one part of your health story
Genetic results can provide meaningful information, but how much they reveal depends on the condition and the kind of variant involved. Over time, factors such as lifestyle, environment, age, and medical history also shape how the body works. For some conditions, particularly those influenced by many genes, genetic information offers context rather than certainty and is best understood alongside other aspects 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 perspective.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. Small differences in DNA can change how the body breaks down a drug, moves it through the bloodstream, or responds to it at its target. This helps explain why the same medication works well for one person, has less effect for another, or causes more side effects in someone else. These differences are common and can influence both how well a treatment works and how sensitive a person may be to it.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences can shape a person’s response to medications. It looks at links between genes and drugs to help explain why the same treatment can work differently from one person to another. For many medicines, genes can affect how strongly a drug works or how the body processes it. This information can support more informed, more personalized treatment decisions. To explore this topic further, you can learn more in the LearnHub.
Drugs influenced by the AMER1 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication response. If you have concerns about medicines, side effects, or changes in your health, speak with your doctor or pharmacist.
History
AMER1 came to medical attention in 2007, when researchers identified variants in this gene in some people with Wilms tumor, a childhood kidney cancer. It was first widely referred to as WTX, a name linked to the X chromosome and the tumor in which it was discovered. Over time, descriptions became more precise. As researchers learned more, the gene was renamed AMER1, short for APC membrane recruitment 1, which better reflected its broader place in human genetics. Later studies also connected AMER1 variants with osteopathia striata with cranial sclerosis, helping clinicians recognize that the same gene could be relevant in both cancer research and an inherited bone condition.