The MRPS23 gene helps mitochondria, the parts of cells that make energy, build proteins needed to keep cells running. This gene helps your body support organs with high energy needs, including the brain, muscles, and ears. If the protein made from the MRPS23 gene does not work well, cells may make less energy, and some people can develop a rare mitochondrial condition with developmental delay, small head size, hearing loss, weakness, or balance problems. The MRPS23 gene is mainly discussed in genetics and mitochondrial medicine rather than popular culture.
What is a gene?
A gene is a stretch of DNA that carries instructions your cells can use to make molecules or regulate processes in the body. Some genes provide the directions for producing proteins, the parts of cells that do the work. Other genes mainly help decide when certain processes happen, where they take place, and how active they are. Taken together, genes affect how the body develops and functions, and they can also influence how you respond to food, stress, or medications. For a more detailed look at this topic, you can learn more in the LearnHub.
Overview
MRPS23Gene function
What if the gene works
The MRPS23 gene helps mitochondria, the cell’s energy centers, make some of the proteins they need. This supports normal energy production in many tissues.
Risk
What if the gene does not work
Depending on the variant, the MRPS23 gene may be partly reduced or more severely impaired. This can disrupt mitochondrial protein production and weaken how mitochondria make energy for the cell.
Treatment
What does that mean for your treatment
No MRPS23-specific treatment or management approach is currently established for people with a pathogenic variant in the MRPS23 gene. MRPS23 is being studied in cancer research as a possible marker of how tumors behave and as a treatment target, but this has not led to gene-directed care for inherited MRPS23 variants.
Gene function
What if the gene works
Your cells rely on the MRPS23 gene to keep mitochondria, the cell's energy making parts, working smoothly. It helps these structures build a small set of proteins that cannot be supplied from elsewhere in the cell. This supports steady energy production in tissues that work continuously, such as muscles, nerves, and the heart.
Inside mitochondria, the MRPS23 gene helps form the small part of the mitochondrial ribosome, the cell machine that reads instructions to make proteins. This lets mitochondria build a few essential proteins from their own genetic material.
The protein from the MRPS23 gene helps give the mitochondrial ribosome a stable working structure. A stable ribosome can read mitochondrial instructions and make proteins in an orderly way.
Proteins made with help from the MRPS23 gene become parts of the system that turns food and oxygen into usable cell energy. This is part of how the MRPS23 gene helps cells make energy for everyday tasks.
What is a variant?
A genetic variant is a minor change in the DNA sequence within a gene. These changes are common and are part of normal human diversity, including 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 works more significantly and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the MRPS23 gene can change the protein’s shape or stability, which may stop it from joining the mitochondrial ribosome correctly. This helps explain how variants influence the MRPS23 gene's function: cells may make less of the protein parts needed for energy production, and the effect can range from mild to more marked depending on the variant. More disruptive variants often reduce protein production more strongly or lead to a shortened, nonworking protein.
How variants are linked to conditions
Variants in the MRPS23 gene do not yet have a broadly confirmed link to a specific inherited health condition, though research on MRPS23 gene variants and health conditions is still evolving. Early findings need broader confirmation before they can support a clear diagnosis. If you have a reported change in the MRPS23 gene, your doctor or genetic counselor can explain what it may mean alongside your symptoms and family history.
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 represent natural variation among people. For many genes, having a variant associated with a condition suggests a possible link rather than a certain diagnosis, especially when several genes and environmental factors also contribute. In some situations, though, 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 isn’t yet broadly confirmed evidence on specific factors that increase or reduce health risk related to MRPS23. Anyone with concerns about a change in MRPS23 and what it may mean for personal or family risk should speak with a doctor or genetic counselor.
Inheritance of MRPS23 variants
MRPS23-related conditions are inherited in an autosomal recessive pattern. This means a person usually develops the condition only when both copies of the MRPS23 gene carry a disease-causing variant, with one altered copy inherited from each parent. Parents who each carry one variant are typically unaffected carriers, 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 variant. In practical terms, this is how MRPS23 gene variants are inherited in families with a confirmed MRPS23-related condition.
What does my MRPS23 result mean for my family?
There isn't yet a broadly confirmed inheritance pattern tied to a specific condition for MRPS23, though this understanding can change as research develops. If you have a specific MRPS23 result and questions about what it could mean for your family, a doctor or genetic counselor can 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 variant in the MRPS23 gene, doctors use genetic testing for MRPS23 variants on a blood or saliva sample. A lab reads the DNA code and checks for changes, then reports whether a variant was found and how clearly it is understood.
When should I consider getting a genetic test?
There isn't yet a broadly established MRPS23-specific reason for genetic testing. Decisions about testing are usually based on your symptoms, medical history, and family history, together with a doctor or genetic counselor.
A genetic result is only one part of your health story
A genetic result can provide useful insight, but how much it explains varies with the condition and the kind of variant involved. How your body functions over time is also shaped by many other factors, including lifestyle, environment, age, and medical history. For some conditions, particularly those affected by many genes, genetic information offers context rather than certainty and is most helpful when 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 make sense of individual experiences.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how your body responds to medicines. Small differences in genes can change how a drug is broken down, moved through the body, or how strongly it acts on its target. This helps explain why the same medication may work well for one person, seem less effective for another, or cause more side effects in someone else.
What is Pharmacogenetics?
Pharmacogenetics examines how differences in a person’s genes affect the way they respond to medications. It studies gene drug relationships to help explain why the same treatment can work differently in different people. For many medicines, genes influence both how strongly a drug works and how the body handles it. This information can support more individualized and better informed treatment decisions. More detail on this topic is available in the LearnHub.
Drugs influenced by the MRPS23 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 questions about side effects, treatment response, or new symptoms are best discussed with your doctor or pharmacist.
History
MRPS23 entered the scientific literature as researchers worked to map the proteins that make up the human mitochondrial ribosome, the cell structure that helps mitochondria use genetic instructions. In recent decades, awareness of this gene’s role has grown as studies of mitochondrial biology became more precise. Building on this early work, scientists linked MRPS23 to a wider effort to understand how the nucleus and mitochondria coordinate their genes. Its history is part of the broader shift from simply listing mitochondrial proteins to recognizing that changes in these genes can matter in human health. Over time, descriptions became more precise as gene sequencing made it easier to identify MRPS23 and compare it across species.