The SLC25A1 gene helps move citrate, a small molecule your cells use for energy and for making fats, in and out of mitochondria (the parts of cells that produce energy). If this gene does not work properly, cells may struggle to manage fuel, and pathogenic variants in both copies can cause a rare inherited condition with developmental delay, low muscle tone, seizures, and movement or breathing problems. Some people with SLC25A1 gene changes have milder muscle weakness, while others are more affected.
What is a gene?
Genes are sections of DNA that carry instructions your cells use to make molecules or manage activities in the body. Some genes provide the directions for producing proteins, the parts of cells that do much of the work. Others mainly regulate when certain processes happen, where they take place, and how strongly they run. Taken together, genes affect how the body develops and works, and they can also shape how you respond to food, stress, or medications. For a deeper look at this topic, you can find more in the LearnHub.
Overview
SLC25A1Gene function
What if the gene works
The SLC25A1 gene helps move citrate, a small molecule linked to energy, out of mitochondria. This supports energy balance and gives cells material to make fats and other important building blocks.
Risk
What if the gene does not work
Variants in the SLC25A1 gene can cause D,L-2-hydroxyglutaric aciduria, often with developmental delay, seizures, and low muscle tone, or a congenital myasthenic syndrome with muscle weakness. Milder and more severe variants can affect onset and features.
Treatment
What does that mean for your treatment
No SLC25A1-specific treatment or drug choice approach is currently established in clinical guidelines. Care is usually supportive and guided by the person’s symptoms. The SLC25A1 gene is also being studied as a metabolic drug target, especially in cancer research, but this has not led to routine treatment decisions.
Conditions associated with SLC25A1
Gene function
What if the gene works
Your cells use the SLC25A1 gene to move citrate, a small molecule linked to energy use, between key cell compartments. This steady exchange connects energy making with the production of basic cell materials. Understanding how the SLC25A1 gene works helps explain how cells support day to day growth and upkeep.
The SLC25A1 gene makes a transporter that moves citrate across the inner membrane of mitochondria, the parts of cells that help make energy. It swaps citrate for malate so different parts of the cell can share fuel and raw materials.
Once citrate reaches the fluid part of the cell, it can be turned into material used to make fats and cholesterol. This helps cells build and maintain membranes, which act like the outer layer and inner walls of the cell.
By moving citrate and malate back and forth, this gene helps match energy production with the cell’s day to day needs. This is central to how the SLC25A1 gene helps cells make energy and building blocks in a coordinated way.
What is a variant?
A genetic variant is a small difference in the DNA sequence of a gene. These differences are common and are part of normal human diversity, including variation 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, however, a variant can affect how a gene works more substantially and may contribute to or directly cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the SLC25A1 gene can change the shape, stability, or transport ability of its protein, which helps explain how SLC25A1 gene variants affect protein function in cells. Some variants only partly reduce citrate movement across the inner mitochondrial membrane, while more disruptive variants can leave very little transport activity or cause the protein to break down sooner. Greater loss of function often leads to a stronger metabolic effect and, in SLC25A1-related disease, may be linked to earlier or more pronounced symptoms.
How variants are linked to conditions
Pathogenic variants in both copies of the SLC25A1 gene cause combined D-2- and L-2-hydroxyglutaric aciduria, the main condition linked to variants in the SLC25A1 gene. This rare inherited condition usually starts early in life and is associated with developmental delay, seizures, movement problems, and low muscle tone. Some people carrying pathogenic variants in the SLC25A1 gene also have a congenital myasthenic syndrome pattern, with muscle weakness that may fluctuate.
A variant is not necessarily a diagnosis
Variants in genes are a routine feature of human biology and are widespread across the population. Most do not directly affect health and instead reflect normal human variation. For many genes, a variant tied to a condition indicates a potential link, not a certain diagnosis, particularly when several genes and environmental influences play a role. Still, in some situations, one well-established variant in a particular gene is enough to confirm a diagnosis.
Are there things that can increase or change my risk?
For SLC25A1, risk is mainly shaped by inheritance rather than lifestyle. A child is at higher risk when both parents carry a disease-causing change in the SLC25A1 gene, and this can be more likely in families with relatives affected by the same condition or when parents are blood relatives. There is not enough evidence to say that diet, exercise, or other daily habits lower this genetic risk.
Inheritance of SLC25A1 variants
SLC25A1-related conditions are inherited in an autosomal recessive pattern. In practical terms, how SLC25A1 variants are inherited usually means a child needs to receive one altered copy of the SLC25A1 gene from each parent to be affected. Parents who each carry one variant are usually unaffected themselves. For 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.
What does my SLC25A1 result mean for my family?
Changes in the SLC25A1 gene are linked to conditions that usually run 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, especially if there is a family history of similar symptoms or an affected child.
Genetic information
Genetic testing
How you find out about variants
Testing for changes in the SLC25A1 gene is usually done with a blood or saliva sample. SLC25A1 genetic testing reads the gene’s DNA sequence to look for variants and may be part of a broader panel or exome test. Results may show a variant, no variant, or an uncertain finding.
When should I consider getting a genetic test?
Testing for the SLC25A1 gene may be worth considering when a baby or child has signs of a rare inherited condition, such as major developmental delay, low muscle tone, seizures, or repeated breathing problems, especially if lab tests suggest a body chemistry problem. It can also help when this condition runs in the family or both parents are known carriers.
A genetic result is only one part of your health story
Genetic results can provide useful insight, but how much they reveal varies by the condition and the type of variant involved. Over time, many factors, including lifestyle, environment, age, and medical history, also shape how the body functions. For some conditions, especially those influenced by many genes, genetic information adds context rather than certainty and is most helpful when considered alongside other parts of care. In other situations, a genetic result can offer a clear answer. In areas such as 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 absorbs, breaks down, transports, or responds to a drug, so the same treatment may work better for one person than for another. This is common and can influence how much benefit someone gets from a medicine or how sensitive they are to side effects.
What is Pharmacogenetics?
Pharmacogenetics examines how differences in genes can affect the way people respond to medications. It looks at links between genes and drugs to better explain why the same treatment may work differently from one person to another. For many medicines, genes can influence how strongly a drug works or how the body handles it. This information can support more informed and personalized treatment decisions. If you want to read more about this topic, you can learn more in the LearnHub.
Drugs influenced by the SLC25A1 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. Questions about side effects, medication changes, or your overall health are best discussed with your doctor or pharmacist.
History
The SLC25A1 gene entered the medical literature as researchers mapped the growing family of mitochondrial carrier genes in the late 20th century. Initially understood only through laboratory studies, it gained clearer clinical importance when rare inherited variants were linked to a recognizable metabolic condition in the 2010s. From these first observations, research expanded steadily. Scientists then used newer DNA sequencing methods to confirm SLC25A1 as the gene involved in affected families from different parts of the world. This helped move the gene from a mainly research finding into routine genetic diagnosis for a small number of rare cases. Over time, descriptions became more precise as doctors and researchers connected genetic results with patterns seen in children and families.