The UQCRH gene helps mitochondria, the cell’s energy centers, move energy along a chain that powers ATP production. If both copies of this gene do not work properly, your cells may make less energy, especially in tissues with high energy needs like the brain, muscles, and liver. This can lead to a rare mitochondrial condition with features such as low muscle tone, tiredness, developmental delay, or episodes of excess acid in the blood.
What is a gene?
Genes are stretches of DNA that hold instructions your cells use to make molecules or manage activities in the body. Some genes carry the directions for producing proteins, which do much of the cell’s work. Others mainly regulate when certain processes happen, where they happen, and how active they are. Taken together, genes affect how the body develops and functions, and they can influence how you respond to food, stress, and medications. For a deeper look at this topic, you can find more in the LearnHub.
Overview
UQCRHGene function
What if the gene works
The UQCRH gene helps mitochondria, the parts of cells that make energy, run part of the process that turns food and oxygen into usable energy.
Risk
What if the gene does not work
Changes in the UQCRH gene can range from milder to more severe and may weaken a step in mitochondrial energy production. This can slow electron transfer in one of the cell’s energy-making complexes and reduce the cell’s ability to generate energy.
Treatment
What does that mean for your treatment
No treatment or drug choice that is specific to the UQCRH gene is currently established. Research on the UQCRH gene is focused mainly on broader mitochondrial disease biology, not on a guideline-based targeted therapy.
Gene function
What if the gene works
Your cells need a steady supply of energy for basic tasks all day long. In everyday terms, UQCRH gene function is tied to how mitochondria, the parts of cells that make energy, keep that process moving. This gene supports one of the middle steps in the cell’s main energy pathway.
The UQCRH gene makes a protein that joins complex III, a protein group inside mitochondria. Its place in that group helps the energy pathway stay organized.
Inside this complex, the UQCRH gene helps electrons move from one energy carrier to the next. This keeps the chain of reactions moving so cells can keep extracting energy from food.
By supporting this transfer step, the UQCRH gene helps build a proton gradient (a stored energy difference across the mitochondrial membrane). Cells use that stored energy to make ATP, the fuel they use for everyday work.
What is a variant?
A genetic variant is a slight change in the DNA sequence within a gene. These changes are common and help create 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 simply represent natural genetic variation. Sometimes, though, a variant can change how a gene functions more strongly and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the UQCRH gene can alter how the UQCRH protein is made, folded, or held in place inside mitochondria (the parts of cells that make energy). In how UQCRH gene variants affect mitochondrial complex III, milder changes may partly reduce protein stability or binding, while more severe variants can stop the protein from being made or lead to rapid breakdown. This can lower complex III activity to different degrees. In mitochondrial complex III deficiency, greater loss of function may be linked to earlier or more marked symptoms.
How variants are linked to conditions
Variants in the UQCRH gene do not yet have a broadly confirmed link to a specific health condition, although research on UQCRH gene variants and health conditions is still evolving. Anyone with a confirmed UQCRH gene finding should use their own doctor’s or genetic counselor’s advice to understand what it may mean for them.
A variant is not necessarily a diagnosis
Variants in genes are a routine part of human biology and are widely found across the population. Most do not directly affect health and instead reflect normal human diversity. For many genes, having a variant associated with a condition points to a possible link rather than a confirmed diagnosis, particularly when more than one gene and environmental influences play a role. Still, in certain 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?
There isn't yet broadly confirmed evidence on specific factors that increase or reduce health risk related to the UQCRH gene. If a change in UQCRH has been found in you or your family, a doctor or genetic counselor can help explain what it may mean for your personal risk.
Inheritance of UQCRH variants
For families asking how UQCRH gene variants are inherited, the established pattern for UQCRH-related disease is autosomal recessive. This means a child usually inherits one altered copy of the UQCRH gene from each parent. Parents who each carry one variant are often unaffected, but with each pregnancy they have a 25% chance of having an affected child, a 50% chance of having a child who is a carrier, and a 25% chance of having a child who inherits neither variant. Because the UQCRH gene is on an autosome, this pattern affects males and females equally.
What does my UQCRH result mean for my family?
Changes in the UQCRH gene are linked to a rare inherited energy-making condition that usually runs in families in a recessive pattern. For relatives, this often means parents may be healthy carriers, and brothers or sisters could also be affected or be carriers even if they feel well. Close family members may want to learn whether the same gene change is present in the family.
Genetic information
Genetic testing
How you find out about variants
Testing for variants in the UQCRH gene is usually done on blood or saliva, and UQCRH genetic testing reads the gene's DNA code to look for changes linked with inherited mitochondrial disease. Results may identify a disease-causing variant, a harmless variant, or a variant of uncertain significance.
When should I consider getting a genetic test?
There isn’t yet a broadly established UQCRH-specific reason for genetic testing in most people. Testing decisions are usually based on symptoms, family history, and whether a doctor suspects a rare inherited condition that affects how the body’s cells make energy, often checked as part of a larger gene panel.
A genetic result is only one part of your health story
A genetic result can provide useful insight, but how much it clarifies depends on the condition and the kind of variant involved. Lifestyle, environment, age, and medical history are among the many factors that influence how the body functions over time. For some conditions, especially those shaped by many genes, genetic information offers context rather than certainty and is best understood together with other parts of care. In other situations, a genetic result may give a clear answer. In areas such as medication response, genetic results can help put individual experiences into context.
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 absorbed, broken down, moved through the body, or how strongly it acts at its target. This helps explain why the same treatment works well for one person, works less well for another, or causes more side effects in some people.
What is Pharmacogenetics?
Pharmacogenetics examines how differences in a person’s genes affect the way they respond to medicines. It studies gene-drug patterns to help explain why the same treatment can work differently in different people. For many drugs, genes influence both how powerfully a medicine works and how the body handles it. This information can support more informed, personalized treatment choices. More detail on this topic is available in the LearnHub.
Drugs influenced by the UQCRH gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choices, so concerns about side effects, new symptoms, or how your medicines fit with your overall health are best discussed with your doctor.