The TRMT10C gene helps mitochondria, the energy making parts of cells, prepare small RNA molecules needed to build proteins. The protein made by this gene helps your cells keep energy production running, especially in the brain, muscles, and heart. If the gene does not work properly, cells may struggle to make enough energy. This can lead to a mitochondrial condition that may involve developmental delay, muscle weakness, feeding problems, hearing loss, or heart problems.
What is a gene?
Genes are stretches of DNA that give your cells instructions for making molecules or guiding processes in the body. Some genes carry the information needed to make proteins, the parts of cells that do much of the work. Other genes mainly regulate when certain processes take place, where they occur, and how strongly they run. Together, genes affect how the body develops and works, and they can influence how you respond to food, stress, or medications. To look at this topic more closely, you can find more in LearnHub.
Overview
TRMT10CGene function
What if the gene works
The TRMT10C gene helps mitochondria, the parts of cells that make energy, prepare transfer RNAs needed to build proteins. This supports normal energy production and healthy cell function.
Risk
What if the gene does not work
Variants in the TRMT10C gene can impair mitochondrial energy production and cause a mitochondrial condition with low muscle tone, developmental delay, feeding problems, hearing loss, and raised lactate. Milder and more severe variants may affect onset and severity.
Treatment
What does that mean for your treatment
For people with a pathogenic variant in the TRMT10C gene, no treatment or drug choice approach specific to the TRMT10C gene is currently established. The TRMT10C gene is being studied in broader mitochondrial disease research, but this has not yet led to a guideline-based therapy tied to this gene.
Conditions associated with TRMT10C
Gene function
What if the gene works
Your cells use the TRMT10C gene to help mitochondria, the parts of cells that make usable energy, keep key RNA molecules ready for work. Inside mitochondria, this gene helps prepare transfer RNAs, which are small RNA helpers needed to build proteins. These steps support smooth mitochondrial protein production and everyday energy release from food.
Inside mitochondria, the TRMT10C gene helps cut transfer RNAs to the right starting point. This careful trimming is part of mitochondrial RNA processing and gets these RNA helpers ready for protein building.
This gene also adds a small chemical tag called a methyl group to certain mitochondrial transfer RNAs. That mark helps these RNAs fold into the right shape and work more smoothly during protein production.
By preparing mitochondrial transfer RNAs, the TRMT10C gene helps mitochondria make some of their own proteins. Those proteins are important parts of the cell's energy making system.
What is a variant?
A genetic variant is a small difference in the DNA sequence of a gene. These differences are common and help account for normal human diversity, such as variation in appearance, metabolism, or how the body responds to environmental influences. Many variants do not lead to any noticeable effect and are simply part of natural genetic variation. In some cases, though, a variant can change 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 TRMT10C gene can disrupt mitochondrial RNA processing by weakening the protein, reducing its enzyme activity, or making it harder for it to join partner proteins. This can impair the trimming and chemical marking of mitochondrial transfer RNAs, which then lowers mitochondrial protein production. Milder variants may leave some activity, while more disruptive variants can cause a greater drop in function and are often linked to earlier and more severe mitochondrial disease.
How variants are linked to conditions
Pathogenic variants in the TRMT10C gene can cause a rare inherited mitochondrial condition called combined oxidative phosphorylation deficiency 30. In discussions of how variants in the TRMT10C gene are linked to conditions, this is the main confirmed diagnosis. Reported features include low muscle tone, developmental delay, feeding difficulties, hearing loss, seizures, and high lactate levels. Severity varies, but the condition usually begins in infancy or early childhood.
A variant is not necessarily a diagnosis
Genetic variants are a usual part of human biology and are widely seen in the general population. Most do not have a direct effect on health and instead reflect normal human diversity. For many genes, carrying a variant associated with a condition suggests a possible link rather than a definite diagnosis, especially when multiple genes and environmental factors play a role. In some cases, 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 is not yet broadly confirmed evidence on specific factors that increase or reduce health risk related to the TRMT10C gene. For many living with a disease-causing TRMT10C change, risk is mainly linked to the genetic change itself rather than lifestyle or common environmental factors, and a doctor or genetic counselor can help explain personal risk.
Inheritance of TRMT10C variants
TRMT10C-related conditions are inherited in an autosomal recessive pattern. In practical terms, this means a child usually needs to inherit one altered copy of the TRMT10C gene from each parent to be affected. Parents who each carry one variant are typically unaffected themselves, and with each pregnancy there is a 25% chance the child will inherit both variants, a 50% chance the child will be a carrier, and a 25% chance the child will inherit neither familial variant. This is the established TRMT10C inheritance pattern for the condition linked to this gene.
What does my TRMT10C result mean for my family?
Changes in the TRMT10C gene are linked to a rare inherited condition that usually affects families in a recessive pattern, so relatives may be healthy carriers without knowing it. Brothers and sisters of someone with a confirmed TRMT10C-related condition may also be affected or may be carriers. Parents are often carriers, and other close blood relatives may also carry the same gene change.
Genetic information
Genetic testing
How you find out about variants
To look for variants in the TRMT10C gene, clinicians usually use TRMT10C genetic testing as part of a multigene panel or exome sequencing on a blood sample, and sometimes a saliva sample. The lab reads the gene's DNA code and compares any variants with medical evidence to decide whether they may explain the person's condition.
When should I consider getting a genetic test?
Testing for the TRMT10C gene may be considered when a baby or child has signs of an inherited condition that affects how cells make energy, such as low muscle tone, feeding problems, developmental delay, seizures, or hearing loss. It can also help if a TRMT10C variant is already known in the family.
A genetic result is only one part of your health story
A genetic result can provide valuable insight, but how much it explains varies based on the condition and the type of variant involved. How the body functions over time is also shaped by many factors, including lifestyle, environment, age, and medical history. For some conditions, especially those influenced by many genes, genetic information provides context rather than certainty and is most useful when considered alongside other parts of care. In other situations, a genetic result may offer a clear answer. In areas such as 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 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 likely someone is to notice side effects. Medication response also depends on other factors, including age, kidney or liver function, and other medicines.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences can affect a person’s response to medications. It looks at the connection between genes and drugs to help explain why the same treatment may work differently from one person to another. For many medicines, genes can influence both how strongly a drug works and how the body handles it. This information can support treatment decisions that are more informed and more individualized. To explore this subject further, you can learn more in the LearnHub.
Drugs influenced by the TRMT10C gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medicine choices, so questions about side effects, new symptoms, or how well a treatment is working are best discussed with your doctor.
History
TRMT10C entered the genetics literature in the early 2010s, when researchers studying how mitochondria process their own RNA identified it as part of a larger protein group. It was first described under another name, MRPP1, before its place in the TRMT family became clearer. From these first observations, research expanded steadily. Scientists then connected TRMT10C to mitochondrial RNA handling and later to rare inherited conditions in some families. Over time, descriptions became more precise as laboratory studies and clinical reports helped define the gene’s role in human disease.