Your body uses the VPS13D gene to help keep mitochondria, the parts of cells that make energy, in good working order and to support normal nerve cell function. If this gene does not work properly, cells can struggle to manage energy and clear damaged cell parts, which may lead to developmental delay, muscle weakness, stiffness, trouble with balance, or other movement problems. The protein made by this gene helps your cells maintain healthy mitochondria, which is especially important in the brain and muscles. The VPS13D gene is mainly known in medical genetics rather than public culture.
What is a gene?
Genes are stretches of DNA that carry instructions your cells use to make molecules or direct processes in the body. Some genes provide the information needed to make proteins, which are the working parts of cells. Other genes mainly help regulate when certain processes happen, where they happen, and how strongly they run. Taken together, genes influence how the body develops and functions, and they can also shape how you respond to food, stress, or medications. For a closer look at this topic, you can find more in the LearnHub.
Overview
VPS13DGene function
What if the gene works
The VPS13D gene helps cells maintain healthy mitochondria, the structures that make energy. Its protein supports mitochondrial shape and quality control, especially in nerve and muscle cells.
Risk
What if the gene does not work
When the VPS13D gene does not work well, it can cause a rare movement condition with balance problems, muscle weakness, and developmental delay. Milder or more severe variants may affect when symptoms start and how pronounced they are.
Treatment
What does that mean for your treatment
For pathogenic or loss-of-function variants in the VPS13D gene, no VPS13D-specific treatment or management approach is currently established. Care is usually guided by symptoms rather than the exact variant. Research is exploring how the VPS13D gene affects mitochondrial health and cell recycling, which may help guide future targeted therapies.
Conditions associated with VPS13D
Gene function
What if the gene works
Many cells depend on the VPS13D gene to keep mitochondria working smoothly and membranes well supplied. These jobs matter every day because mitochondria provide energy for movement, thinking, and organ function. This is part of how the VPS13D gene supports mitochondrial function in day to day cell life.
Inside cells, the VPS13D gene helps move fats between nearby membranes. This gives mitochondria and other cell structures material to build and refresh their outer coverings.
It helps keep mitochondria properly divided and arranged within the cell. This supports a steady network of energy making structures where power is needed.
The VPS13D gene supports mitophagy (the cleanup of old mitochondria). This helps cells recycle worn mitochondria and replace them as part of normal upkeep.
What is a variant?
A genetic variant is a small change in the DNA sequence of a gene. These changes are common and are part of normal human diversity, including differences in appearance, metabolism, or how the body responds to environmental influences. Many variants do not have any noticeable effect and simply represent natural genetic variation. In some situations, however, a variant can change how a gene functions more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the VPS13D gene can make the protein shorter, unstable, or scarce in cells. Many changes disrupt how cells maintain mitochondria, the parts that make energy, which shows how variants in the VPS13D gene affect protein function. Some variants leave partial activity, while more disruptive variants cause a larger loss of function. When both copies are strongly affected, symptoms often begin earlier and can be more pronounced.
How variants are linked to conditions
Pathogenic variants in both copies of the VPS13D gene can cause a rare inherited neurologic condition often called VPS13D-related movement disorder. People may develop trouble with balance, stiffness, an unsteady walk, or involuntary movements, and some also have developmental delay, seizures, muscle weakness, or vision changes. This VPS13D gene condition shows a wide range of symptoms, so severity and age at onset can differ from one person to another.
A variant is not necessarily a diagnosis
Genetic variants are a usual part of human biology and are widely seen in the general population. Most do not have a direct effect on health and instead reflect normal human diversity. For many genes, having a variant associated with a condition indicates a possible link rather than a definite 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 is not yet broadly confirmed evidence on specific factors that increase or reduce health risk related to the VPS13D gene. For many living with VPS13D-related changes, the main driver is the genetic change itself, and a genetics specialist can help explain what that may mean for personal and family risk.
Inheritance of VPS13D variants
For families trying to understand how VPS13D gene variants are inherited, the well-established pattern is autosomal recessive. This means a person usually develops a VPS13D-related condition only when they inherit two disease-causing variants in the VPS13D gene, one from each parent. Parents who each carry one variant are often 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.
What does my VPS13D result mean for my family?
For VPS13D, the main recognized family pattern is recessive, which usually means parents are healthy carriers and brothers or sisters could also be affected or be carriers. Close relatives may share the same gene change, especially siblings. Children of someone with a VPS13D-related condition usually inherit one changed copy and are carriers, unless the other parent also carries a VPS13D change.
Genetic information
Genetic testing
How you find out about variants
Variants in the VPS13D gene are usually found with a blood or saliva test. If you are looking for how VPS13D genetic testing works, a lab reads the DNA code in this gene, often as part of an exome or larger gene panel, to look for changes linked to symptoms. Results may be positive, negative, or uncertain.
When should I consider getting a genetic test?
Testing for changes in the VPS13D gene may be worth considering when a child or adult has unexplained balance problems, muscle weakness, unusual movements, developmental delay, or seizures, especially if similar symptoms run in the family. A result can help explain the cause and clarify whether the condition is linked to VPS13D.
A genetic result is only one part of your health story
A genetic result can be informative, but how much it reveals varies by the condition and the type of variant involved. Over time, many factors shape how the body works, including lifestyle, environment, age, and medical history. For some conditions, especially those influenced by many genes, genetic information provides context rather than certainty and is best considered together with other parts of care. In other situations, a genetic result may offer a clear answer. In areas such as medication response, genetic results can also help put individual 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, works less well for another, or causes more side effects in someone who is more sensitive to it.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences affect the way people respond to medications. It studies the relationship between genes and drugs to help explain 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 more informed and more individualized treatment decisions. More detail on this topic is available in the LearnHub.
Drugs influenced by the VPS13D gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in medication response, so questions about medicines, side effects, or treatment changes are best discussed with your doctor.