The HSD17B10 gene helps cells make energy by processing certain protein building blocks and other small molecules inside mitochondria, the parts of cells that act like energy centers. If it does not work well, people may develop HSD10 mitochondrial disease, which can affect development, muscle tone, movement, and sometimes the heart or breathing. This gene plays an important role in keeping energy supply steady in tissues with high demands, especially the brain. Because it is on the X chromosome, effects can vary between males and females.
What is a gene?
Genes are stretches of DNA that carry instructions your cells use to make molecules or regulate processes in the body. Some genes hold the directions for making proteins, which are the working parts of cells. Others mainly help control when certain processes happen, where they happen, and how active they are. In combination, genes influence how the body develops and functions, and they can affect how you respond to food, stress, or medications. For a more detailed look at this topic, you can learn more in the LearnHub.
Overview
HSD17B10Gene function
What if the gene works
The HSD17B10 gene helps mitochondria, the cell’s energy centers, break down certain fats and the amino acid isoleucine. This supports steady energy production and normal brain and nerve cell function.
Risk
What if the gene does not work
Variants in the HSD17B10 gene can cause HSD10 mitochondrial disease, often affecting development, movement, and learning. Effects range from mild to severe, and some infants develop seizures, low muscle tone, or heart problems.
Treatment
What does that mean for your treatment
No HSD17B10-specific treatment or management approach is currently established. Care is guided by a person’s symptoms rather than by a gene-directed drug choice, and early-stage research is exploring HSD17B10-related pathways as possible treatment targets.
Conditions associated with HSD17B10
Gene function
What if the gene works
Your cells use the HSD17B10 gene in mitochondria, the parts that make energy. It helps process certain food building blocks and helps prepare mitochondrial RNA so cells can make key energy-related proteins. This explains the HSD17B10 gene’s role in mitochondria during everyday cell activity.
The HSD17B10 gene helps mitochondria process isoleucine, one of the amino acids in food. This step supports normal energy metabolism.
Inside mitochondria, the HSD17B10 gene helps prepare transfer RNA, a helper molecule needed to make proteins. It works in a small protein team that trims and marks these RNAs so mitochondrial protein production can run smoothly.
What is a variant?
A genetic variant is a minor change in the DNA sequence of a gene. These changes are common and are part of normal human diversity, such as differences in appearance, metabolism, or the way 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 significantly and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the HSD17B10 gene can make the protein unstable, reduce its enzyme activity, or disrupt how mitochondria handle RNA instructions needed for energy production. In how HSD17B10 variants affect protein function, there is often a spectrum: milder variants may leave partial activity, while more severe variants can cause a broader loss of function. This difference in functional impact can influence how early HSD10 disease appears and how severe it becomes.
How variants are linked to conditions
Pathogenic variants in the HSD17B10 gene cause HSD10 mitochondrial disease, an X linked condition that may affect development, movement, seizures, hearing, and sometimes the heart. In older reports, HSD17B10 gene variants linked to disease were often described as 2 methyl 3 hydroxybutyryl CoA dehydrogenase deficiency. Severity can vary from person to person, but a clearly pathogenic variant in the HSD17B10 gene can confirm the diagnosis.
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 reflect natural variation among people. For many genes, having 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. Still, in some situations, one well-characterized variant in a particular gene is enough to confirm a diagnosis.
Are there things that can increase or change my risk?
For HSD17B10, risk is mainly set by whether a disease-causing change in the gene is inherited, because this is an X-linked condition. Males often have more severe health effects, while females can range from unaffected to clearly affected, and there is not enough evidence to say that lifestyle changes lower the chance of developing it.
Inheritance of HSD17B10 variants
HSD17B10-related conditions are inherited in an X-linked pattern, which explains how HSD17B10 gene variants are inherited within families. If a mother carries a disease-causing variant in the HSD17B10 gene, she can pass it to either sons or daughters. If a father carries the variant, he passes it to all of his daughters and none of his sons because sons receive his Y chromosome, not his X chromosome. Females may have milder or more variable effects, while males are often more clearly affected.
What does my HSD17B10 result mean for my family?
A result in the HSD17B10 gene can matter for relatives because this condition is usually passed down through the X chromosome. This often means the change may also be present in the mother and in other relatives on her side of the family. Boys in the family are more likely to have clear health problems, while girls may be carriers and can sometimes have milder symptoms.
Genetic information
Genetic testing
How you find out about variants
To look for variants in the HSD17B10 gene, genetic testing usually reads the gene from a blood or saliva sample. If you are searching for how genetic testing for HSD17B10 variants works, the lab compares your DNA sequence with the usual sequence and reports whether a variant was found.
When should I consider getting a genetic test?
Consider testing the HSD17B10 gene when a child has unexplained developmental delay or loss of skills, low muscle tone, seizures, or movement problems, especially if boys in the family have had similar symptoms. Testing can also help confirm a rare inherited mitochondrial condition and clarify chances for other family members.
A genetic result is only one part of your health story
A genetic result can provide valuable information, but how much it explains varies with the condition and the type of variant. Over time, many factors, including lifestyle, environment, age, and medical history, affect how the body functions. For some conditions, particularly those shaped by many genes, genetic information offers context rather than certainty and makes the most sense when viewed alongside other parts of care. In other situations, a genetic result can give a clear answer. In areas like medication response, genetic results can also help put individual experiences into context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how your body responds to medicines. Some people break down a medication more slowly or more quickly than others, while some are more sensitive to its effects. This can change how well a treatment works or how likely side effects are, even when two people take the same medicine in the same way.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic variation can shape a person’s response to medicines. By studying the relationships between genes and drugs, it helps clarify why the same treatment may affect people differently. For many medications, genes influence how the body processes a drug or how strongly it works. This information can support more informed, personalized treatment decisions. More on this topic is available in the LearnHub.
Drugs influenced by the HSD17B10 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choice or dose, so general questions about medicines, side effects, or new symptoms are best discussed with your doctor or pharmacist.