The KRT23 gene helps make keratin 23, a structural protein that supports the inner framework of certain epithelial cells, especially in tissues lining organs. If the gene does not work as expected, cells may handle stress and growth signals differently, which can affect how tissues repair themselves. This gene plays an important role in how some cells keep their shape and organize normal growth. Changes in KRT23 activity have also been studied in several cancers, mainly as a marker of altered cell behavior rather than a stand-alone cause.
What is a gene?
Genes are stretches of DNA that give your cells instructions for making molecules or guiding activities in the body. Some carry the code for proteins, which do much of the day to day work inside cells. Others mainly regulate when certain processes happen, where they happen, and how active they are. Taken together, genes affect how the body develops and works, and they can influence how you respond to food, stress, or medications. For a deeper look at this topic, you can learn more in the LearnHub.
Overview
KRT23Gene function
What if the gene works
The KRT23 gene makes keratin 23, a protein that helps support the inner framework of some cells that line organs and body surfaces. This helps cells keep their shape and handle everyday physical stress.
Risk
What if the gene does not work
Changes in the KRT23 gene can range from milder to more severe variants. When it works less well, cells may have less support for their internal protein framework and stress responses, which can alter how some epithelial cells mature and behave.
Treatment
What does that mean for your treatment
No treatment or management approach specific to the KRT23 gene is currently established in clinical guidelines. The KRT23 gene is being studied mainly as a possible biomarker in some cancers, rather than as a factor that currently directs drug choice.
Gene function
What if the gene works
In many lining tissues, the KRT23 gene helps cells keep their shape while handling everyday stretching and pressure. It supports part of the inner protein framework that gives cells flexible strength. Understanding how the KRT23 gene works in lining cells helps show how tissues stay organized during normal turnover.
Keratin 23 joins other keratin proteins to build intermediate filaments (strong inner support fibers). This network helps many lining cells keep their shape during normal daily activity.
The fibers that include keratin 23 give cells strength with some flexibility. This helps tissues handle bending, pressure, and rubbing while keeping their usual structure.
The keratin network also helps keep the inside of the cell arranged in an orderly way. That support can help neighboring cells stay well aligned as tissues renew.
What is a variant?
A genetic variant is a slight difference in the DNA sequence of 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 cause any noticeable effect and simply represent natural genetic variation. Sometimes, however, a variant changes how a gene works more substantially and can contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Studies of how variants in the KRT23 gene affect protein function show changes in the keratin 23 protein's sequence, stability, or ability to join intermediate filaments with partner proteins. Milder variants may slightly reduce stability or alter these interactions, while more severe variants can create a shortened protein or greatly lower the amount made. At the cellular level, this can disturb filament organization and change how the protein is processed and broken down.
How variants are linked to conditions
Current evidence suggests the KRT23 gene does not yet have a broadly confirmed link to a specific inherited health condition, although research on KRT23 gene variants and disease risk is still evolving. Anyone with a confirmed KRT23-related diagnosis should rely on guidance from their doctor or genetic counselor for interpretation and follow-up.
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 have a direct effect on health and instead represent natural human diversity. For many genes, having a variant associated with a condition suggests a possible link rather than a definite diagnosis, especially when several genes and environmental factors also contribute. In some situations, though, a single well-characterized variant in a particular gene is enough to confirm a diagnosis.
Are there things that can increase or change my risk?
There isn't yet broadly confirmed evidence on specific factors that increase or reduce health risk related to the KRT23 gene. If KRT23 appears on a genetic test report, its meaning usually depends on the exact change found and the wider clinical picture.
Inheritance of KRT23 variants
There is not yet a broadly confirmed disease specific inheritance pattern for the KRT23 gene, so how KRT23 gene variants are inherited in relation to a defined genetic condition is still being clarified. KRT23 is located on chromosome 17, which is an autosome rather than a sex chromosome. That means each person inherits one copy of the KRT23 gene from each parent, and inheritance does not differ between sons and daughters.
What does my KRT23 result mean for my family?
There is not yet a broadly confirmed inherited condition clearly tied to the KRT23 gene in the way seen with some other genes. If you have a specific KRT23 result and want to understand what it could mean for relatives, a doctor or genetic counselor can help put that result in family context.
Genetic information
Genetic testing
How you find out about variants
Genetic testing for KRT23 variants usually uses a blood or saliva sample to read the KRT23 gene. A KRT23 genetic test may be included in a multigene panel, exome sequencing, or whole genome sequencing, and the lab classifies any variant it finds based on established clinical standards.
When should I consider getting a genetic test?
There is not yet a broadly established reason to get genetic testing just for changes in the KRT23 gene. Testing decisions are usually based on your personal health and family history and are best discussed with a doctor or genetic counselor.
A genetic result is only one part of your health story
A genetic finding can provide valuable information, but how much it reveals varies based on the condition and the kind of variant. Over time, factors such as age, environment, lifestyle, and medical history also influence how the body works. In some conditions, especially those shaped by many genes, genetic information gives context rather than certainty and is most useful when viewed alongside other parts of care. In other situations, a genetic result may offer a clear answer. In areas like medication response, genetic results can also help place personal experiences in context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. This happens because inherited differences can change how the body absorbs, breaks down, transports, or reacts to a drug. As a result, the same treatment may work better for some people, have less effect in others, or cause side effects more easily in some individuals.
What is Pharmacogenetics?
Pharmacogenetics examines how differences in genes can affect the way a person responds to medicines. It studies links between genes and drugs to help explain why the same treatment may work differently from one person to another. For many medications, genes influence how strongly a drug works or how the body handles it. This information can support more informed and more individualized treatment decisions. More about this topic is available in the LearnHub.
Drugs influenced by the KRT23 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in how people respond to medicines, so questions about side effects, new symptoms, or whether a treatment is right for you are best discussed with your doctor.