The TMEM140 gene gives instructions for a protein in the cell membrane that appears to help regulate how cells signal, stick, and grow. If this gene does not work normally, cells may behave less predictably, which can affect how tissue functions. Research has linked unusually high TMEM140 gene activity, rather than inherited variants, with some cancers, especially glioma, where it may support tumor cell growth and spread. TMEM140 is mainly discussed in research and has not become a widely known public gene.
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, the parts of cells that do much of the work. Other genes mainly control when, where, and how much certain processes take place. Together, genes affect how the body develops and works, and they can influence how you respond to food, stress, or medications. For a more detailed look at this topic, you can read more in the LearnHub.
Overview
TMEM140Gene function
What if the gene works
The TMEM140 gene makes a protein that sits in the cell membrane. It likely helps cells carry out routine signaling and other membrane tasks.
Risk
What if the gene does not work
Changes in the TMEM140 gene can range from milder to more severe variants. If activity from the TMEM140 gene is reduced, cells may have altered membrane signaling and protein handling, which can disrupt how they communicate and respond.
Treatment
What does that mean for your treatment
No TMEM140-specific treatment or management approach is currently established for pathogenic or loss-of-function variants in the TMEM140 gene. TMEM140 is being studied as a possible biomarker and drug target in some cancers, including glioma, but this has not led to guideline-based treatment choices.
Gene function
What if the gene works
Your cells need some proteins to sit in the right membrane so messages and materials stay organized. For many readers, the TMEM140 gene's function in cell membranes is mainly about making one of these membrane-spanning proteins. Its position allows contact with nearby proteins at the cell surface or within internal cell membranes.
The TMEM140 gene provides instructions for a protein that spans a cell membrane. This setup lets the protein work at membrane boundaries, where cells organize signals and materials.
Because the TMEM140 protein is anchored in a membrane, it is positioned to interact with nearby proteins. These local contacts can support routine communication and organization at the membrane.
What is a variant?
A genetic variant is a minor change in the DNA sequence of a gene. These changes are common and help create normal human diversity, including differences 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
Variants in the TMEM140 gene can change how much TMEM140 protein is made, how well it folds, and whether it reaches the right place in the cell membrane. TMEM140 gene variant effects on protein function can range from mild changes that partly reduce stability or cell surface placement to more severe variants that shorten the protein or lead to little to no working protein. This creates a spectrum of functional impact, with partial loss and near-complete loss of function both possible.
How variants are linked to conditions
Current evidence on TMEM140 gene variants linked to disease is still limited, and the TMEM140 gene does not yet have a broadly confirmed link to a specific health condition. As research develops, that picture may become clearer, and anyone with a confirmed TMEM140-related diagnosis should rely on guidance from their doctor or genetic counselor for information that fits their situation.
A variant is not necessarily a diagnosis
Genetic variants are a usual feature of human biology and are widely found across the population. Most do not directly affect health and simply contribute to normal human diversity. For many genes, having a variant associated with a condition points to a possible link rather than a certain diagnosis, particularly when more than one gene and environmental influences play a role. In some 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 TMEM140 gene. If TMEM140 is part of your test results or family history, a doctor or genetic counselor can help put that finding into context with your personal and family health history.
Inheritance of TMEM140 variants
TMEM140 gene inheritance is not tied to one broadly confirmed, disease-specific pattern at this time, and this picture may become clearer as research develops. The TMEM140 gene is located on chromosome 7, which is an autosome rather than a sex chromosome. That means everyone inherits two copies of the TMEM140 gene, one from each parent, and any future health links would generally be tracked through either side of the family.
What does my TMEM140 result mean for my family?
There is not yet a broadly confirmed inheritance pattern tied to a specific health condition for the TMEM140 gene, and this understanding can change as research develops. If you have a specific TMEM140 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 own report and family history.
Genetic information
Genetic testing
How you find out about variants
Doctors find changes in the TMEM140 gene through genetic testing for TMEM140 variants, usually using a blood or saliva sample. A lab reads the gene’s DNA code and checks for variants that may help explain a health condition or show whether a variant is shared in a family.
When should I consider getting a genetic test?
There is not yet a broadly established TMEM140-specific reason for genetic testing in routine care. Testing decisions are usually based on your personal health history, family history, and the wider clinical picture, and are best discussed with a doctor or genetic counselor.
A genetic result is only one part of your health story
Genetic results can provide meaningful insight, but how much they reveal depends on the condition and on the type of variant involved. Over time, many factors shape how the body functions, including lifestyle, environment, age, and medical history. For some conditions, especially those influenced by many genes, genetic information provides context rather than certainty and is best understood together with other aspects of care. In other situations, a genetic result may offer a clear answer. In areas like medication response, genetic results can also help put individual experiences into perspective.
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 seems weaker or causes more side effects in another. Small differences in how the body absorbs, breaks down, or responds to a drug are common and can shape both benefit and sensitivity. Medication response is usually influenced by several factors at once, including genetics, age, other health conditions, and other medicines.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences affect the way people respond to medications. It looks at gene and drug patterns to help explain why the same treatment can work differently from one person to another. For many medicines, genes influence both how strongly a drug works and how the body handles it. This information can support more informed and more individualized treatment decisions. You can read more about this topic in the LearnHub.
Drugs influenced by the TMEM140 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. Questions about side effects, a treatment not working as expected, or possible medicine interactions are best discussed with your doctor or pharmacist.