The ZDHHC3 gene helps cells attach a small fatty tag to certain proteins, helping them settle in the right part of the cell, especially in the brain. The protein made by this gene helps your cells send signals and move proteins to the right place. If it does not work well, cell communication can be disrupted. Variants in the ZDHHC3 gene are being studied in developmental and neurologic conditions and in some cancers.
What is a gene?
Genes are stretches of DNA that hold instructions your cells use to make molecules or regulate activities in the body. Some genes provide the directions for producing proteins, which are the working parts of cells. Other genes are used mainly to control when certain processes happen, where they happen, and how strongly they occur. Together, genes affect how the body develops and works, and they can influence how you respond to food, stress, or medications. For a deeper look at this topic, you can find more in the LearnHub.
Overview
ZDHHC3Gene function
What if the gene works
The ZDHHC3 gene helps cells attach a fatty signal to certain proteins. This helps guide where those proteins go and how they work, especially for cell communication.
Risk
What if the gene does not work
Variants in the ZDHHC3 gene can be mild or more severe and may reduce its ability to attach fatty acid tags to proteins. This can alter where proteins sit in cells and how cell signaling works.
Treatment
What does that mean for your treatment
No ZDHHC3-specific treatment or management approach is currently established for people with a pathogenic or loss-of-function variant in the ZDHHC3 gene. The ZDHHC3 gene is being studied in laboratory and cancer research as a possible biomarker and drug target, but this has not led to guideline-based treatment choices.
Gene function
What if the gene works
In your cells, the ZDHHC3 gene helps manage where certain proteins sit and how they behave at cell membranes. It does this by adding a small fatty tag to selected proteins as they move through the cell sorting system. Understanding how the ZDHHC3 gene works helps explain how cells keep communication and transport running smoothly over time.
The ZDHHC3 gene adds a small fatty tag to selected proteins. This process, called palmitoylation, helps those proteins attach to cell membranes.
By tagging proteins in the Golgi (the cell's sorting center), the ZDHHC3 gene helps guide them to the right membrane location. This supports orderly protein traffic inside the cell.
Some proteins need this fatty tag to stay in place and pass along messages. The ZDHHC3 gene helps cells keep everyday signaling organized.
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, or the way the body responds to environmental influences. Many variants do not have any noticeable effect and simply represent natural genetic variation. In some situations, 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 ZDHHC3 gene can change the shape, stability, or activity of the enzyme it encodes, which may weaken palmitoylation (adding a fatty tag that helps other proteins attach to cell membranes). In practice, how ZDHHC3 gene variants affect protein function often comes down to reduced tagging of target proteins, poorer movement of the enzyme inside the cell, or faster breakdown. Milder variants may partly lower activity, while more severe variants can leave little or no function.
How variants are linked to conditions
The ZDHHC3 gene does not yet have a broadly confirmed link to a specific health condition, although research on how ZDHHC3 gene variants are linked to disease is still evolving. If you have a confirmed variant in the ZDHHC3 gene, your doctor or genetic counselor can explain what it may mean for you and your family.
A variant is not necessarily a diagnosis
Variants are a usual part of human biology and are widely present across the general population. Most do not have a direct effect on health and simply reflect normal human variation. For many genes, carrying a variant associated with a condition suggests a possible link rather than a definite diagnosis, especially when several genes and environmental factors play a role. In some situations, though, a single well characterized variant in a particular gene can be 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 ZDHHC3 gene. For many living with a ZDHHC3 gene change, personal risk can depend on the exact variant and the health condition involved, so a doctor or genetic counselor can help put results in context.
Inheritance of ZDHHC3 variants
There is not yet a broadly confirmed inheritance pattern tied to a specific ZDHHC3-related condition, so information on how variants of the ZDHHC3 gene are inherited is still developing. The ZDHHC3 gene is located on chromosome 3, which is an autosome rather than a sex chromosome. That means each person inherits one copy from each parent, and variants in this gene can be passed through either side of the family.
What does my ZDHHC3 result mean for my family?
There isn't yet a broadly confirmed inheritance pattern tied to a specific condition for ZDHHC3, though this understanding can change as research develops. If you have a specific ZDHHC3 result and questions about what it could mean for your family, a doctor or genetic counselor can help explain it in the context of your personal and family history.
Genetic information
Genetic testing
How you find out about variants
To find out about variants in the ZDHHC3 gene, genetic testing reads the DNA code from a blood, saliva, or cheek swab sample and looks for changes in that gene. Results may show no variant, a harmless variant, or a variant that may help explain health findings.
When should I consider getting a genetic test?
There is not yet a broadly established reason to order genetic testing just for the ZDHHC3 gene in routine care. Testing decisions are usually based on your personal health and family history and are best made with a doctor or genetic counselor.
A genetic result is only one part of your health story
A genetic result can provide useful insight, but how much it reveals varies by the condition and the type of variant involved. Many other factors, including lifestyle, environment, age, and medical history, also shape how the body works over time. For some conditions, especially those influenced by many genes, genetic information provides context rather than certainty and is most useful when considered alongside 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 frame individual experiences.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. One person may break down a drug more slowly or more quickly than another, which can change how well it works or how likely side effects are. These differences are common and are one reason the same treatment can feel very effective for some people but less helpful or harder to tolerate for others.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic variation can shape a person’s response to medications. By studying the relationship between genes and drugs, it helps explain why the same treatment may work differently from one person to another. For many medicines, genes can affect both how strongly a drug works and how the body processes it. This information can support more informed, personalized treatment decisions. More detail on this topic is available in the LearnHub.
Drugs influenced by the ZDHHC3 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 people respond to treatment, so any concerns about side effects, new symptoms, or medication changes are best discussed with your doctor.
History
ZDHHC3 entered the scientific literature in the early 2000s, during a period when researchers were identifying a family of human genes with a shared DHHC sequence. It was first commonly described as GODZ, a name used in early lab studies before gene naming became more standardized. As medical science evolved, so did understanding of this gene. Over time, the preferred name shifted to the ZDHHC3 gene to match modern naming systems for this gene family. Its history is mainly tied to basic cell biology research rather than a major public health event, but those early studies helped place it within the broader map of human genes.