The MRPS25 gene provides instructions for a small part of the machinery that makes proteins inside mitochondria, the structures that supply energy to cells. This gene helps your body keep energy production running, especially in tissues that need a lot of power, such as the brain and muscles. If both copies carry harmful variants, mitochondrial protein production can falter and cause an inherited mitochondrial condition. People with this condition may have low muscle tone, developmental delay, seizures, or other problems linked to poor cellular energy.
What is a gene?
Genes are stretches of DNA that hold instructions your cells use to make molecules or regulate processes in the body. Some genes carry the information needed to make proteins, the working parts of cells. Others mainly help direct when certain processes happen, where they happen, and how strongly they occur. Together, genes affect how the body develops and works, and they can shape how you respond to food, stress, or medications. If you want to explore this topic in more detail, you can learn more in the LearnHub.
Overview
MRPS25Gene function
What if the gene works
The MRPS25 gene helps your mitochondria, the cell's energy centers, make proteins they need. This supports normal energy production and helps tissues with high energy needs, like the brain and muscles, work properly.
Risk
What if the gene does not work
Harmful variants in the MRPS25 gene can cause a mitochondrial condition with poor cellular energy production, often leading to developmental delay, seizures, weakness, and movement problems. Effects can range from milder to more severe, with earlier onset bringing more features.
Treatment
What does that mean for your treatment
For a pathogenic variant in the MRPS25 gene, no MRPS25-specific treatment or management approach is currently established. Research is focused mainly on how disrupted mitochondrial protein production contributes to disease, rather than on a current targeted drug choice.
Gene function
What if the gene works
Your cells need a steady supply of energy to power muscles, nerves, and other organs. The MRPS25 gene helps mitochondria, the cell’s energy centers, make a small set of proteins they need for this job. This supports routine cell activity throughout the body.
Inside mitochondria, MRPS25 helps build part of the protein-making machinery called the small ribosome unit. This lets the cell begin mitochondrial protein production.
Its protein helps the mitochondrial machinery read messenger RNA (a working copy of genetic instructions). This keeps the production of mitochondrial proteins organized and on track.
The proteins made with MRPS25 support the cell’s energy system. By helping produce these parts, the MRPS25 gene supports everyday energy production in tissues across the body.
What is a variant?
A genetic variant is a minor change in the DNA sequence within a gene. These changes are common and help shape normal human diversity, including differences in appearance, metabolism, and how the body responds to environmental influences. Many variants do not have any noticeable effect and are simply part of natural genetic variation. In some situations, 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
Many MRPS25 gene variants make the protein less stable or stop it from being made at all, which helps explain how MRPS25 gene variants affect mitochondrial protein synthesis. When this happens, the small mitochondrial ribosome may not assemble properly, so cells make fewer proteins needed for energy production. Some variants leave partial activity, while more severe variants can cause a much larger loss of function. This difference in residual function can influence how strongly cell energy pathways are affected.
How variants are linked to conditions
Rare, usually biallelic pathogenic variants in the MRPS25 gene cause a mitochondrial condition called combined oxidative phosphorylation deficiency. In reports on MRPS25 gene variants and mitochondrial disease, children with this diagnosis have shown developmental delay, low muscle tone, seizures, feeding difficulties, hearing loss, and high lactate levels, though the pattern can differ from person to person.
A variant is not necessarily a diagnosis
Genetic variants are a normal feature of human biology and are widely found 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 indicates a possible link rather than a confirmed diagnosis, especially when several genes and environmental factors also contribute. In some situations, though, a single well characterized variant in a specific gene can be enough to establish 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 MRPS25 gene. For many living with a change in MRPS25, risk is mostly shaped by the specific genetic change itself rather than everyday lifestyle factors, and a doctor or genetic counselor can help explain personal risk.
Inheritance of MRPS25 variants
MRPS25-related conditions are inherited in an autosomal recessive pattern. This means a person usually inherits one changed copy of the MRPS25 gene from each parent, while parents who carry one variant are typically unaffected. When both parents are carriers, each pregnancy has a 25% chance that the child will inherit both variants, a 50% chance that the child will be a carrier, and a 25% chance that the child will inherit neither variant. In practical terms, how MRPS25 gene variants are inherited usually involves both parents passing on the changed gene copy.
What does my MRPS25 result mean for my family?
For MRPS25, the reported condition is inherited in a recessive way, which usually means parents are healthy carriers and brothers or sisters could also be affected or be carriers. For many families, this means full siblings may wish to learn whether they carry the same gene change, especially if there are similar health concerns in the family. More distant relatives can sometimes be carriers too.
Genetic information
Genetic testing
How you find out about variants
To find out whether you carry a variant in the MRPS25 gene, a lab can analyze DNA from a blood, saliva, or cheek swab sample. Genetic testing for MRPS25 variants usually reads the gene’s sequence, often as part of a broader panel or exome test, and the report explains whether a variant was found and how it is classified.
When should I consider getting a genetic test?
Testing for changes in the MRPS25 gene may be considered if someone has signs of a rare condition that affects the body's energy-making parts of cells, such as developmental delay, seizures, muscle weakness, hearing loss, or balance problems. It can also make sense when there is a family history of a similar condition or an earlier test has pointed toward MRPS25.
A genetic result is only one part of your health story
Genetic findings can provide useful insight, but what they can tell you depends on the condition being evaluated and the kind of variant present. Over time, many factors shape how the body works, including lifestyle, environment, age, and medical history. In some conditions, especially those influenced by many genes, genetic information offers context rather than certainty and is best considered together with 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 put individual experiences into 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 may work well for one person, do less for another, or cause more side effects in someone who is more sensitive to it.
What is Pharmacogenetics?
Pharmacogenetics examines how differences in a person’s genes affect the way they respond to medicines. By studying the links between genes and medications, it helps explain why the same treatment can work differently in different people. For many drugs, genes influence both how strongly a medicine works and how the body handles it. This information can support treatment choices that are more informed and more tailored to the individual. More detailed information on this topic is available in the LearnHub.
Drugs influenced by the MRPS25 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding how medicines are chosen or used. For questions about side effects, new symptoms, or whether a treatment is right for you, speak with your doctor or pharmacist.