KRT28 helps make one of the structural proteins used in hair follicles to build the hair fiber. If the KRT28 gene does not work as expected, hair may grow with less strength or a different texture because the strand is put together less securely. Many variants in this gene have little effect, while some may influence hair traits. This gene is mainly relevant to hair biology rather than broader body systems.
What is a gene?
A gene is a section of DNA that carries instructions your cells use to make molecules or direct processes in the body. Some genes hold the directions for producing proteins, which perform much of the cell’s work. Others mainly regulate when certain processes take place, where they occur, and how strongly they run. Together, genes affect how the body develops and functions, and they can influence how you respond to food, stress, or medications. For a more in depth look at this topic, you can find additional information in the LearnHub.
Overview
KRT28Gene function
What if the gene works
The KRT28 gene helps make a hair protein that supports the structure and strength of the hair shaft. It works with other keratin proteins in hair follicles to help hair keep its shape.
Risk
What if the gene does not work
Changes in the KRT28 gene can alter how a hair keratin protein is made or folded in hair shaft cells. Milder to more disruptive variants may weaken keratin fiber assembly to different degrees and reduce internal support.
Treatment
What does that mean for your treatment
At present, no treatment or management approach is specifically guided by pathogenic or loss-of-function variants in the KRT28 gene.
Gene function
What if the gene works
In the hair follicle, the KRT28 gene helps build the structure of growing hair. It makes a keratin protein used by specialized cells as they shape the hair strand. When this gene is working normally, it supports steady, organized hair formation.
The KRT28 gene helps specialized hair follicle cells make a keratin protein for the growing hair fiber. It adds to the sturdy framework that supports the shape and structure of hair as it forms.
Keratin 28 joins with partner keratins to form tough support strands inside cells. These strands help hair follicle cells keep their structure while they shape the developing hair shaft.
In the hair follicle, this protein supports the orderly arrangement of cells and proteins involved in hair formation. This is part of normal KRT28 gene function in hair follicles, helping the strand develop in a stable way.
What is a variant?
A genetic variant is a minor difference in the DNA sequence within a gene. These differences 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 produce any noticeable effect and are part of natural genetic variation. Sometimes, though, a variant changes gene function more strongly and can contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Changes in the KRT28 gene can alter the keratin protein’s shape, stability, or ability to pair with other keratins, which may disrupt the strong fibers built inside hair follicle cells. This is how variants in the KRT28 gene affect hair keratin structure at a cellular level. Milder variants may slightly weaken protein interactions, while more disruptive variants can cause protein misfolding (an incorrect shape), faster breakdown, or little to no usable protein.
How variants are linked to conditions
The KRT28 gene does not yet have a broadly confirmed link to a specific health condition, and current evidence on how KRT28 gene variants are linked to conditions is still developing. Anyone with a confirmed KRT28 finding should rely on guidance from their doctor or genetic counselor for interpretation in the context of their own health.
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 directly affect health and simply contribute to the natural variation seen among people. 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 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 KRT28 gene. If a test result mentions KRT28 and you want to understand what it may mean for you or your family, a doctor or genetic counselor can help put it in context.
Inheritance of KRT28 variants
There is not yet a broadly confirmed disease specific inheritance pattern for KRT28 gene variants, so KRT28 gene inheritance is not tied to one well established dominant, recessive, or X linked condition. The KRT28 gene is located on chromosome 17, which is an autosome. That means each person inherits one copy of the KRT28 gene from their mother and one copy from their father.
What does my KRT28 result mean for my family?
There is not yet a broadly confirmed pattern showing that changes in the KRT28 gene cause a specific inherited condition in families. If you have a KRT28 result and want to understand what it could mean for close relatives, a doctor or genetic counselor can explain it in the context of your exact result and family history.
Genetic information
Genetic testing
How you find out about variants
To see whether you carry a change, labs use DNA sequencing, which is how genetic testing finds KRT28 variants in a blood, saliva, or cheek swab sample. The test reads the KRT28 gene letter by letter and compares it with a reference sequence. Results may identify a benign variant, a variant of uncertain significance, or a clinically relevant change.
When should I consider getting a genetic test?
There is not yet a broadly established, KRT28-specific medical reason for genetic testing in routine care. Testing decisions are best made with a doctor or genetic counselor, based on your symptoms, family history, and the larger health picture.
A genetic result is only one part of your health story
A genetic result can give useful insight, but what it reveals depends on the condition and the type of variant involved. Many factors, including lifestyle, environment, age, and medical history, also shape how the body works over time. For some conditions, especially those influenced by many genes, genetic information offers context rather than certainty and is best understood alongside the rest of a person’s care. In other situations, a genetic result can give a clear answer. In areas such as 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. Small differences in genes can change how the body breaks down a drug, moves it through the body, or responds to it at its target. This helps explain why the same medication works well for one person, works less well for another, or causes more side effects in some people, and these differences are a common part of normal human variation.
What is Pharmacogenetics?
Pharmacogenetics examines how differences in genes affect the way people respond to medicines. By looking at relationships between genes and medications, it helps explain why the same treatment can work differently from one person to another. For many drugs, genes influence how powerfully a medicine works or how the body handles it. This information can support treatment choices that are more informed and more tailored to the individual. To learn more about this subject, see the LearnHub.
Drugs influenced by the KRT28 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choices or predicting medication side effects. Questions about medicines, side effects, or changes in your health are best discussed with your doctor or pharmacist.