This gene helps your cells make energy inside mitochondria, the parts of the cell that act like tiny power stations. The NDUFA12 gene provides instructions for one piece of complex I, an important energy making machine. If it does not work properly, cells may struggle to produce enough energy, especially in the brain and muscles. People with harmful variants in the NDUFA12 gene can develop mitochondrial disease, which may involve developmental delay, low muscle tone, movement problems, seizures, or lactic acidosis (a buildup of acid in the blood).
What is a gene?
Genes are sections of DNA that carry instructions your cells use to make molecules or direct processes in the body. Some genes provide the code for producing 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 happen. Together, genes affect how the body develops and works, and they can also influence how you respond to food, stress, or medications. To explore this topic further, you can read more in the LearnHub.
Overview
NDUFA12Gene function
What if the gene works
The NDUFA12 gene helps mitochondria, your cells’ energy centers, make energy efficiently. Its protein is part of complex I, an early step in turning food and oxygen into the energy your body uses every day.
Risk
What if the gene does not work
Variants in the NDUFA12 gene can cause a condition that reduces how cells make energy, often including Leigh syndrome, with problems affecting movement, development, muscle tone, and breathing. Milder or more severe variants may influence which features appear and how early symptoms begin.
Treatment
What does that mean for your treatment
A pathogenic or loss-of-function variant in the NDUFA12 gene does not currently have an established NDUFA12-specific treatment or drug choice, so care is guided by symptoms and standard mitochondrial disease management.
Gene function
What if the gene works
Your cells need a steady energy supply to keep muscles moving, nerves signaling, and organs working. The NDUFA12 gene helps with that by supporting complex I, an important energy making protein group inside mitochondria (the parts of cells that make energy). When this system runs well, cells can turn nutrients into usable energy in a controlled way.
The NDUFA12 gene helps build complex I in mitochondria, the parts of cells that make energy. This supports an early step in how your cells make energy from food.
Its protein helps keep complex I properly assembled and stable in the membrane wall inside mitochondria. That steady structure lets the cell's energy system work smoothly from moment to moment.
Within the cell's energy chain, this protein supports complex I as tiny charged particles called electrons move through the system. That process helps cells create stored energy they can use for everyday work.
What is a variant?
A genetic variant is a small difference in the DNA sequence within a gene. These differences are common and are part of normal human diversity, including differences in appearance, metabolism, and how the body responds to environmental influences. Many variants do not cause any noticeable effect and simply represent natural genetic variation. In some situations, however, a variant can affect how a gene works more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Changes in the NDUFA12 gene can alter how the NDUFA12 protein is made or how well it fits into complex I, a key part of the cell’s energy system inside mitochondria. This helps explain how NDUFA12 gene variants affect mitochondrial complex I function. Milder variants may leave some activity, while more severe variants can sharply reduce assembly or stability of the complex. In people with disease-causing variants, less remaining function often links to earlier onset and more pronounced mitochondrial disease.
How variants are linked to conditions
Pathogenic variants in the NDUFA12 gene can cause mitochondrial complex I deficiency, a rare inherited mitochondrial condition that may appear in infancy or childhood with developmental delay, low muscle tone, feeding difficulties, seizures, or features of Leigh syndrome. Reports on how NDUFA12 gene variants are linked to conditions mainly center on this diagnosis, although severity can vary from person to person.
A variant is not necessarily a diagnosis
Variants in DNA are a usual feature of human biology and are widespread across the general population. Most do not directly affect health and instead represent normal human variation. For many genes, having a variant associated with a condition points to a potential link, not a definite diagnosis, particularly when more than one gene and environmental influences play a role. Still, in certain situations, one well-studied variant in a particular gene is enough to confirm a diagnosis.
Are there things that can increase or change my risk?
For NDUFA12, risk is mainly tied to inheriting harmful changes in both copies of the gene, and there is not broadly confirmed evidence that lifestyle changes alter that underlying risk. In people living with an NDUFA12-related mitochondrial condition, infections and other major physical stress can sometimes trigger worsening, so early treatment of illness and regular follow-up can help lower complications.
Inheritance of NDUFA12 variants
NDUFA12 gene inheritance for the known disease related to this gene is autosomal recessive. This means a person usually inherits one changed copy of the NDUFA12 gene from each parent. Parents who each carry one variant often do not have symptoms, but with each pregnancy there is a 25% chance of having a child with both variants, a 50% chance the child will be a carrier, and a 25% chance the child will inherit neither variant. This pattern affects sons and daughters equally.
What does my NDUFA12 result mean for my family?
Changes in the NDUFA12 gene are linked to an inherited condition that usually appears only when a child receives a changed copy from both parents. For family members, this often means parents are healthy carriers, and brothers or sisters may also be affected or may be carriers. Other relatives on both sides of the family could be carriers as well, so the result can matter beyond one person.
Genetic information
Genetic testing
How you find out about variants
To find out whether you carry a variant in the NDUFA12 gene, doctors use genetic testing on a blood sample, saliva, or cheek swab. NDUFA12 genetic testing reads the gene’s DNA code and compares it with the usual sequence to identify changes. Results may show a benign variant, a variant linked to disease, or an uncertain finding.
When should I consider getting a genetic test?
Consider testing for the NDUFA12 gene if you or your child has signs of a rare inherited problem with how cells make energy, such as developmental delay, weak muscles, movement problems, seizures, or repeated lactic acid buildup. Testing can also make sense when there is a family history of a confirmed NDUFA12 change or a related mitochondrial condition.
A genetic result is only one part of your health story
A genetic finding can provide useful insight, yet how much it explains varies with the condition and the kind of variant present. Over time, many factors, including lifestyle, environment, age, and medical history, influence how the body functions. For some conditions, especially those shaped by many genes, genetic information offers context rather than certainty and makes the most sense when considered with other parts of care. In other situations, a genetic result can give a clear answer. In areas like medication response, these results can also help place personal experiences in context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. Small differences in DNA can change how the body breaks down a drug, moves it through the body, or responds to it at its target. This is common and can help explain why the same treatment works well for one person, seems less helpful for another, or causes more side effects in someone else.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences affect the way medications work. It studies connections between genes and drugs to better understand why the same treatment can work differently from one person to another. For many medicines, genes influence either how strongly a drug works or how the body processes it. This information can support treatment decisions that are more informed and more individualized. For a deeper look at this topic, you can learn more in the LearnHub.
Drugs influenced by the NDUFA12 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 how well they work, so any concerns about side effects, new symptoms, or how a treatment may affect your health are best discussed with your doctor.