The KLK14 gene makes an enzyme that cuts other proteins, which helps control cell signaling and protein turnover in tissues such as the skin and several glands. This gene helps your body keep local tissue environments balanced, including normal skin shedding. If the KLK14 gene does not work as expected or is overactive, protein signals can become unbalanced, which may contribute to changes in tissue behavior and is being studied in some cancers.
What is a gene?
A gene is a stretch of DNA that carries instructions cells use to make molecules or regulate processes in the body. Some genes hold the information needed to produce proteins, the parts of cells that do the work. Other genes mainly guide when certain processes happen, where they happen, and how strongly they operate. Taken together, genes affect how the body develops and works, and they can also influence how you respond to food, stress, or medications. For a more detailed look at this topic, you can find more in the LearnHub.
Overview
KLK14Gene function
What if the gene works
The KLK14 gene helps make an enzyme that cuts proteins outside cells. This supports normal skin shedding, tissue upkeep, and signaling between nearby cells.
Risk
What if the gene does not work
Milder to more severe variants in the KLK14 gene can reduce or alter this protein-cutting enzyme’s activity. That may disrupt protein processing and cell-to-cell signaling in tissues where it is active, especially on body surfaces and in glands.
Treatment
What does that mean for your treatment
At present, no KLK14-specific treatment or drug choice is established for people with a pathogenic or loss-of-function variant in the KLK14 gene. KLK14 is being studied as a biomarker and possible drug target in some cancers, but this has not changed routine treatment.
Gene function
What if the gene works
Your body uses the KLK14 gene to make an enzyme that cuts selected proteins outside cells. This careful trimming helps tissues renew themselves and adjust local signals in a controlled way. These actions are especially relevant in the skin and in gland tissues.
The KLK14 gene helps make an enzyme that cuts selected proteins outside cells. This controlled trimming helps switch some proteins on, reshape others, and support routine tissue upkeep.
The enzyme made from the KLK14 gene can activate other protein cutting enzymes by trimming them into their working form. This creates a careful chain of activity that helps body surfaces and secretions stay organized.
In the outer skin, the KLK14 gene helps loosen the links between older surface cells. This supports normal skin shedding and steady surface renewal.
What is a variant?
A genetic variant is a minor difference in the DNA sequence within a gene. These differences are common and help explain normal human diversity, including differences in appearance, metabolism, and how the body responds to environmental influences. Many variants have no noticeable effect and are simply part of natural genetic variation. Sometimes, though, a variant changes 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 KLK14 gene can alter protein folding, processing into its active form, or how well it binds and cuts target proteins. This is how KLK14 variants affect protein function at the cellular level: some changes slightly reduce enzyme activity, while more severe variants can markedly lower stability, impair secretion, or leave the protein largely inactive. Different variants can therefore have milder or stronger functional effects.
How variants are linked to conditions
The KLK14 gene does not yet have a broadly confirmed link to a specific health condition, although research on KLK14 gene variants and disease associations is still developing. If you have a reported change in the KLK14 gene, your doctor or genetic counselor can explain what that result means in the context of your personal and family health history.
A variant is not necessarily a diagnosis
Genetic variants are a routine part of human biology and are widely found across the general population. Most do not directly affect health and simply reflect normal human variation. For many genes, carrying a variant associated with a condition points to a possible link rather than a certain diagnosis, particularly when several genes and environmental influences also 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 KLK14 gene itself. If KLK14 appears in a test result, its meaning usually depends on the exact change found and the broader clinical picture.
Inheritance of KLK14 variants
There is not yet a broadly confirmed Mendelian pattern for how variants of the KLK14 gene are inherited in relation to a specific KLK14 related condition. In practical terms, when people ask how variants of the KLK14 gene are inherited, the answer is that research has not established a single well accepted dominant, recessive, or X linked pattern for this gene. The KLK14 gene is located on chromosome 19, which is an autosome, so each person inherits one copy from each parent.
What does my KLK14 result mean for my family?
There is not yet a broadly confirmed inheritance pattern tied to a specific, well-recognized condition for KLK14. If you have a KLK14 result and want to understand what it could mean for parents, children, brothers, sisters, or other relatives, a doctor or genetic counselor can help explain it in the context of your exact result and family history.
Genetic information
Genetic testing
How you find out about variants
To look for changes in the KLK14 gene, genetic testing usually analyzes DNA from blood, saliva, or a cheek swab. In KLK14 genetic testing, a lab reads the gene’s code and compares it with the usual sequence to see whether a variant is present. Results may show a benign variant, a variant of uncertain significance, or a pathogenic variant.
When should I consider getting a genetic test?
There is not yet a widely accepted medical reason to do genetic testing just for the KLK14 gene. Decisions about testing are best made with a doctor or genetic counselor, based on your own health and your family history.
A genetic result is only one part of your health story
A genetic result can be informative, but what it can tell you varies by the condition and the specific type of variant. How the body functions over time is also shaped by many factors, including lifestyle, environment, age, and medical history. For some conditions, especially those affected by many genes, genetic information offers context rather than certainty and is most useful when viewed alongside other parts of care. In other situations, a genetic result may give a clear answer. In areas like medication response, genetic results can also help make sense of individual experiences.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. Small inherited differences can change how the body absorbs, breaks down, transports, or reacts to a drug, so the same treatment may work better for one person than for another. This is a common part of normal human variation and can influence how much benefit someone gets or how sensitive they are to side effects.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences affect a person’s response to medications. It studies the relationship between genes and drugs to help explain why the same treatment may work differently from one person to another. For many medicines, genes influence how strongly a drug works or how the body handles it. This information can support more informed, individualized treatment decisions. More on this topic is available in the LearnHub.
Drugs influenced by the KLK14 gene
When should I seek medical advice?
There is not yet strong, widely accepted evidence that changes in this gene clearly affect how medicines work. Questions about side effects, new symptoms, or whether a treatment change makes sense are best discussed with your doctor.
History
KLK14 was identified during the late 1990s, when researchers were mapping a cluster of related kallikrein genes on chromosome 19. It was first described as a newly recognized member of the human kallikrein family, a group of genes already known for medical importance because of PSA testing and other tissue markers. From these first observations, research expanded steadily, and KLK14 became part of a broader effort to understand how this gene family is organized and expressed in different tissues. Early studies focused on where KLK14 is active and how its levels change in certain cancers, especially prostate and breast cancer. Its history is tied less to a single public milestone and more to the wider genomics era that revealed many closely linked genes at once.