The VPS13C gene helps cells move fats between their internal compartments, which supports energy balance and normal waste recycling. This gene plays an important role in keeping mitochondria (the cell’s energy producers) and lysosomes (the cell’s recycling centers) working smoothly. If it does not work properly, cells, especially brain cells, may build up stress and clear waste less well. People with two harmful variants in the VPS13C gene can develop a rare inherited form of Parkinson disease, often starting at a younger age than usual.
What is a gene?
Genes are stretches of DNA that carry instructions your cells use to make molecules or to regulate processes in the body. Some genes provide the code for proteins, the parts of cells that do much of the work. Other genes are used mainly to control when certain processes happen, where they take place, and how active they are. Together, genes affect how the body develops and works, and they can also shape how you respond to food, stress, or medications. You can find more detailed information on this topic in the LearnHub.
Overview
VPS13CGene function
What if the gene works
The VPS13C gene helps move fats between cell compartments. This supports healthy lysosomes, the recycling centers of cells, and helps cells keep their internal membranes working smoothly.
Risk
What if the gene does not work
More disruptive variants in the VPS13C gene are linked to early-onset Parkinson disease, with slowed movement, stiffness, tremor, and walking changes. Milder or less disruptive variants may affect how early symptoms appear and how severe they become.
Treatment
What does that mean for your treatment
No treatment or drug choice is currently tailored specifically to pathogenic variants in the VPS13C gene, so care is based on the person’s symptoms and the condition being treated. The VPS13C gene is being studied in Parkinson disease research because changes in it may affect the cell’s recycling and energy systems, which could help shape future targeted therapies.
Conditions associated with VPS13C
Gene function
What if the gene works
Your cells use the VPS13C gene to keep key membranes supplied with fats that help them work properly. This supports routine cleanup and recycling inside the cell, especially in lysosomes. Understanding the VPS13C gene’s function helps explain how cells manage fat transfer between membranes during everyday wear and tear.
The VPS13C gene helps move fats between nearby cell membranes. These fats are basic building materials that help membranes stay flexible and ready for routine cell tasks.
It helps lysosomes, the cell’s recycling centers, keep the right membrane makeup. This supports the breakdown and reuse of worn out cell material.
Its protein works at spots where two cell membranes come close together without joining. This lets cell compartments share materials more directly and stay coordinated.
What is a variant?
A genetic variant is a minor change in the DNA sequence within a gene. These changes are common and help shape normal human diversity, including differences in appearance, metabolism, and the way the body responds to environmental influences. Many variants do not cause any noticeable effects and are simply part of natural genetic variation. At times, though, a variant can affect how a gene works more strongly and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the VPS13C gene can shorten the protein, make it unstable, or alter regions needed to move fats between cell membranes near lysosomes and mitochondria. In short, how VPS13C variants affect protein function depends on the type of DNA change. Milder variants may leave some activity, while more severe variants can lead to little or no working protein. When both copies are affected, greater loss of function is linked to earlier and more pronounced Parkinson disease.
How variants are linked to conditions
Pathogenic variants in the VPS13C gene can cause a rare inherited form of early-onset Parkinson disease, often described as VPS13C-related Parkinson disease. This association is strongest when a person carries disease-causing variants in both copies of the gene, which can confirm the diagnosis in the right clinical setting. Studies link this condition to parkinsonism that may begin at a younger age than usual, and some people also develop changes in thinking over time.
A variant is not necessarily a diagnosis
Genetic variants are a usual part of human biology and are widely found across the general population. Most do not have a direct effect on health and simply reflect natural human diversity. For many genes, carrying a variant associated with a condition indicates a possible link rather than a certain diagnosis, especially when more than one gene and environmental influences are involved. 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 risk related to the VPS13C gene itself. In families with a disease-causing VPS13C change, overall risk is mainly shaped by the inherited variant, while other genes and life factors may still influence when symptoms begin and how they develop.
Inheritance of VPS13C variants
The VPS13C inheritance pattern linked to known disease is autosomal recessive. This means a person usually inherits one altered copy of the VPS13C gene from each parent. Parents who each carry one variant are typically unaffected, and with each pregnancy there is a 25% chance the child will inherit both altered copies, a 50% chance the child will be a carrier, and a 25% chance the child will inherit neither altered copy. This pattern is the established one for VPS13C related Parkinson disease.
What does my VPS13C result mean for my family?
For families affected by VPS13C-related Parkinson disease, the pattern is usually recessive. That means parents are often healthy carriers, brothers and sisters may also be carriers or, less often, may also be affected, and children usually are not affected unless the other parent also carries a VPS13C change. Close relatives may want to learn whether carrier testing is relevant in their family.
Genetic information
Genetic testing
How you find out about variants
VPS13C genetic testing looks for variants in the VPS13C gene, usually using a blood or saliva sample. The lab reads the gene’s DNA sequence to see whether a change is present that could help explain symptoms or clarify a family finding. Results may identify a benign variant, a pathogenic variant, or a variant of uncertain significance.
When should I consider getting a genetic test?
Genetic testing for the VPS13C gene may be worth discussing if Parkinson's symptoms start at a young age, especially when several relatives are affected or there is a family history of similar movement or memory problems. A doctor or genetic counselor can help decide whether this rare gene is relevant in your situation.
A genetic result is only one part of your health story
Genetic results can provide meaningful insight, but what they can tell you depends on the condition and the kind of variant involved. Many factors, including lifestyle, environment, age, and medical history, influence how the body works over time. For some conditions, especially those shaped by many genes, genetic information provides context rather than certainty and is best understood 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 into perspective.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines because it can change how the body breaks down, moves, or responds to a drug. This helps explain why the same treatment works well for one person, has little effect in another, or causes more side effects in someone else. These differences are common and are one reason medication response is not the same for everyone. In some cases, a person’s genetic makeup can influence both how well a treatment works and how sensitive they are to it.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences affect a person’s response to medications. By looking at the links between genes and drugs, it helps explain why the same treatment may work differently from one person to another. For many medicines, genes influence both how strongly a drug works and how the body processes it. This information can support more informed, individualized treatment decisions. More about this topic is available in the LearnHub.
Drugs influenced by the VPS13C gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication response, so questions about medicines, side effects, or changes in how you feel during treatment are best discussed with your doctor.