The MRPL24 gene helps mitochondria, the parts of cells that make energy, build proteins they need to keep that process running. If this gene does not work properly, cells may struggle to make enough energy, which can lead to a mitochondrial condition. People with disease-causing variants in the MRPL24 gene may have low muscle tone, developmental delay, seizures, hearing changes, or other features linked to tissues that need a lot of energy. Symptoms can vary from person to person.
What is a gene?
A gene is a section of DNA that holds instructions your cells use to make molecules or manage processes in the body. Some genes provide the directions for producing proteins, which are the parts of cells that do much of the work. Others mainly help regulate when certain processes happen, where they happen, and how strongly they occur. Taken together, genes affect how the body grows and works, and they can also influence how you respond to food, stress, or medications. More detailed information on this topic is available in the LearnHub.
Overview
MRPL24Gene function
What if the gene works
The MRPL24 gene helps build a mitochondrial ribosome, a structure that makes proteins inside the cell’s energy centers. This supports normal energy production, growth, and everyday cell function.
Risk
What if the gene does not work
Milder to more severe variants in the MRPL24 gene can reduce protein production inside mitochondria, the cell's energy makers. This can lower respiratory chain activity and make cellular energy production less efficient.
Treatment
What does that mean for your treatment
At present, no treatment or drug choice is guided specifically by a pathogenic variant in the MRPL24 gene in clinical guidelines.
Gene function
What if the gene works
The MRPL24 gene helps your cells make proteins inside mitochondria, the parts of cells that produce most of your energy. Its protein is one piece of the mitochondrial ribosome, a small protein-building machine. Understanding what the MRPL24 gene does in your cells helps explain how energy production stays on track each day.
The MRPL24 gene helps form the large part of the mitochondrial ribosome. This lets mitochondria build the small set of proteins they need for their own daily work.
Many of the proteins made with help from the MRPL24 gene are used in the cell’s energy-making system. By supporting this step, the gene helps cells turn food and oxygen into usable energy more smoothly.
MRPL24 gives stability to the mitochondrial protein-making machinery while it reads genetic instructions from mitochondrial DNA. This helps protein assembly inside mitochondria stay organized and efficient.
What is a variant?
A genetic variant is a minor difference in the DNA sequence within a gene. These differences are common and help shape normal human diversity, including variations in appearance, metabolism, or the way the body responds to environmental influences. Many have no noticeable effect and are simply part of natural genetic variation. Sometimes, though, a variant changes how a gene works more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the MRPL24 gene can change how stable the MRPL24 protein is or how well it joins the mitochondrial ribosome. This helps explain how MRPL24 gene variants affect mitochondrial protein production inside cells. Milder variants may leave some activity in place, while more severe loss-of-function variants can sharply reduce or nearly abolish this process.
How variants are linked to conditions
Certain variants affecting both copies of the MRPL24 gene cause a rare mitochondrial disease often grouped under combined oxidative phosphorylation deficiency. People with an MRPL24 gene condition may have developmental delay, low muscle tone, seizures, poor growth, hearing loss, or brain findings such as cerebellar atrophy, although the pattern can vary from person to person. This is a confirmed genetic diagnosis, not just a general risk finding.
A variant is not necessarily a diagnosis
Genetic variants are a normal feature of human biology and are common throughout the general population. Most do not have a direct effect on health and simply reflect natural human diversity. For many genes, carrying a variant tied to a condition suggests a possible association rather than a definite diagnosis, especially when multiple 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 MRPL24. If a change in MRPL24 is found on genetic testing, a doctor or genetic counselor can help explain what it may mean for you and your family.
Inheritance of MRPL24 variants
MRPL24-related conditions are inherited in an autosomal recessive pattern. This means a child usually needs to inherit two disease-causing variants in the MRPL24 gene, one from each parent, to be affected. Parents who each carry one variant are typically unaffected carriers, and with each pregnancy they have a 25% chance of having an affected child, a 50% chance of having a carrier child, and a 25% chance of having a child without the familial variants. This is the main answer to how MRPL24 gene variants are inherited in families.
What does my MRPL24 result mean for my family?
Changes in the MRPL24 gene are linked to a rare inherited condition that usually runs in families in a recessive pattern. For family members, this often means parents may be healthy carriers, and brothers or sisters could also be affected or be carriers. Close relatives may want to learn whether the same gene change is present in their family.
Genetic information
Genetic testing
How you find out about variants
MRPL24 genetic testing checks the MRPL24 gene in a blood or saliva sample for DNA changes called variants. A lab reads the gene sequence and compares it with the usual version. Results may identify a disease-causing variant, a harmless variant, or a variant of uncertain significance, which means its effect is not yet clear.
When should I consider getting a genetic test?
There isn't yet a broadly established MRPL24-specific reason for testing on its own. Testing may be considered as part of a broader genetic workup for a child with signs of a rare mitochondrial condition, especially if similar problems run in the family.
A genetic result is only one part of your health story
A genetic result can be helpful, but what it can tell you varies based on the condition and the type of variant involved. How the body works 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 offers context rather than certainty and is most useful when viewed alongside 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 perspective.
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, how strongly it acts, or how sensitive your body is to it. That helps explain why the same treatment may work well for one person, have less effect in another, or cause more side effects in someone else.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences affect the way people respond to medications. It studies patterns between genes and drugs to help explain why the same treatment can work differently from one person to another. For many medicines, genes influence how strongly a drug works or how the body handles it. This information can support more informed, more individualized treatment decisions. You can read more about this topic in the LearnHub.
Drugs influenced by the MRPL24 gene
When should I seek medical advice?
There is no broadly confirmed role for this gene in guiding medicine choices at this time, so general questions about symptoms, side effects, or how medicines may affect you are best discussed with your doctor or pharmacist.