The HSD17B14 gene helps your cells process certain steroid hormones, especially estrogen, by converting stronger forms into weaker ones. If this gene does not work well, some tissues may be exposed to stronger hormone signals for longer, which can influence growth and cell behavior. Researchers also study the HSD17B14 gene in hormone-sensitive tissues such as the breast because differences in its activity may play a role in cancer biology.
What is a gene?
Genes are stretches of DNA that provide cells with instructions for making molecules or regulating what happens in the body. Some genes hold the directions for producing proteins, the parts of cells that carry out much of the work. Other genes are mainly involved in controlling when certain processes happen, where they take place, and how strongly they run. Together, genes affect how the body develops and works, and they can influence how you respond to food, stress, and medicines. For a more detailed look at this topic, you can learn more in the LearnHub.
Overview
HSD17B14Gene function
What if the gene works
The HSD17B14 gene helps cells make an enzyme that processes certain steroid hormones, including estrogen. This supports normal hormone balance and routine cell activity in several tissues.
Risk
What if the gene does not work
When the HSD17B14 gene works less well, cells may process certain steroid and vitamin A related molecules less effectively. Variants can range from milder to more severe, which may change how much enzyme activity remains.
Treatment
What does that mean for your treatment
At present, a pathogenic or loss-of-function variant in the HSD17B14 gene does not have an established role in choosing treatment or medicines. The HSD17B14 gene is being studied as a possible biomarker in some hormone-sensitive cancers, including breast cancer, but this has not yet changed routine care.
Gene function
What if the gene works
Inside many tissues, the HSD17B14 gene helps fine tune certain sex hormones. It does this by making an enzyme that shifts some hormones from a more active form to a less active one. This is part of what the HSD17B14 gene does in the body every day.
The enzyme from the HSD17B14 gene helps adjust local levels of certain sex hormones inside cells. This lets tissues fine tune hormone signals instead of relying only on hormone levels in the bloodstream.
One of its better known jobs is changing estradiol into estrone, a less active form of estrogen. This supports local estrogen balance in tissues that respond to estrogen.
It also acts on some androgen hormones, including testosterone and related sex hormones. By making small chemical changes, it helps normal day to day hormone processing in the body.
What is a variant?
A genetic variant is a slight change in the DNA sequence within a gene. These changes are common and help shape normal human diversity, including differences in appearance, metabolism, or how the body responds to environmental influences. Many variants do not lead to any noticeable effect and simply represent natural genetic variation. In some situations, though, a variant can change how a gene functions more significantly and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Changes in the HSD17B14 gene can alter the enzyme’s shape, stability, or active site, which may lower how well it handles its chemical targets inside cells. In discussions of how variants in the HSD17B14 gene affect protein function, milder missense variants may leave some activity, while more disruptive variants can cause poor folding or an early stop signal, leaving little or no enzyme activity. Some variants may also weaken how the protein interacts with nearby cell structures or partner molecules, further reducing its function.
How variants are linked to conditions
Current evidence does not yet show a broadly confirmed link between the HSD17B14 gene and a specific health condition, although research on HSD17B14 gene variants and health conditions is still developing. If you have a reported variant in the HSD17B14 gene, your doctor or genetic counselor can interpret it in the context of your symptoms, medical history, and family history.
A variant is not necessarily a diagnosis
Genetic variants are a routine part of human biology and are widely seen 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 play a role. In some situations, however, a single well-characterized variant in a specific 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 HSD17B14. Anyone concerned about personal or family risk can discuss it with a doctor or genetic counselor.
Inheritance of HSD17B14 variants
There is not yet a broadly confirmed, disease-specific Mendelian pattern for how HSD17B14 gene variants are inherited, and this picture may become clearer as research develops. In practical terms, questions about HSD17B14 gene variant inheritance do not currently have one established answer such as autosomal dominant or autosomal recessive. The HSD17B14 gene is located on chromosome 19, which is an autosome, so you inherit one copy from each parent.
What does my HSD17B14 result mean for my family?
There isn't yet a broadly confirmed inheritance pattern tied to a specific health condition for HSD17B14, though this can change as research grows. If you have a specific HSD17B14 result and want to know what it could mean for relatives, a doctor or genetic counselor can help explain it in the context of your family history and the exact finding.
Genetic information
Genetic testing
How you find out about variants
To find out whether you carry a change in the HSD17B14 gene, genetic testing for HSD17B14 variants uses a blood, saliva, or cheek swab sample. A lab reads the gene’s DNA code to look for variants and reports whether a variant was found, which can help clarify whether a specific inherited change is present.
When should I consider getting a genetic test?
There is not yet a broadly established reason to get genetic testing just for the HSD17B14 gene. Testing decisions are usually based on your personal health history, symptoms, and family history, together with a doctor or genetic counselor.
A genetic result is only one part of your health story
A genetic finding can provide useful insight, but how much it explains varies by the condition and the kind of variant involved. Factors such as lifestyle, environment, age, and medical history also shape how the body functions over time. For some conditions, especially those influenced by many genes, genetic information offers context rather than certainty and is most meaningful when considered alongside other parts of care. In other situations, a genetic result can give a clear answer. In areas like medication response, genetic results may help put individual experiences into context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. Two people can take the same treatment and have different results because their bodies may absorb, break down, or respond to the drug in different ways. These inherited differences are common and can influence how well a medicine works or how sensitive someone is to side effects.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences affect the way people respond to medications. By looking at connections between genes and drugs, it helps explain why the same treatment may work differently from one person to another. For many medicines, genes can influence both how the body processes a drug and how strongly it acts. This information can support more informed and individualized treatment decisions. More on this topic is available in the LearnHub.
Drugs influenced by the HSD17B14 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choice or response. If you have questions about side effects, how well a treatment is working, or possible inherited health concerns, talk with your doctor or pharmacist.