The ZDHHC8 gene helps cells place a small fatty tag on certain proteins so they move to the right spot and work properly, especially in the brain. If the ZDHHC8 gene does not work as expected, cell communication may be less organized, which can affect brain development and behavior. Variants involving this gene are often discussed as part of 22q11.2 deletion syndrome, a condition caused by missing genetic material that can influence learning, mood, and mental health.
What is a gene?
Genes are stretches of DNA that carry instructions your cells use to make molecules or manage processes in the body. Some genes hold the instructions for producing proteins, the functional parts of cells. Others mostly help determine when, where, and how strongly certain processes take place. As a group, genes influence how the body develops and functions, and they can affect how you respond to food, stress, or medications. To explore this topic in greater depth, you can find more in the LearnHub.
Overview
ZDHHC8Gene function
What if the gene works
The ZDHHC8 gene helps cells attach a small fat tag to certain proteins. This supports where proteins travel and how they work, especially in brain cells.
Risk
What if the gene does not work
Changes in the ZDHHC8 gene can range from milder to more severe variants, which may reduce how well cells attach fatty tags to certain proteins. This can disrupt protein placement, signaling, and development of nerve cell connections.
Treatment
What does that mean for your treatment
No treatment or guidance on drug choice specific to the ZDHHC8 gene is currently established for people with a pathogenic or loss-of-function variant. It is being studied in neurodevelopment and psychiatric research, especially within the 22q11.2 region, but this has not yet changed routine care.
Gene function
What if the gene works
Inside your cells, the ZDHHC8 gene helps attach a small fat tag to certain proteins. This tag acts like a placement signal, helping proteins settle into cell membranes and move to the right cellular areas. Knowing what the ZDHHC8 gene does in cells helps explain how proteins stay organized for normal cell activity.
The ZDHHC8 gene helps cells attach a small fat tag to selected proteins. This step changes how those proteins interact with cell membranes and other cell parts.
The tag added through ZDHHC8 helps certain proteins settle into cell membranes instead of floating freely. That positioning is important for proteins that need to work at the cell surface or in internal membranes.
ZDHHC8 activity helps guide some proteins to the right place inside the cell. This supports the normal flow of proteins through the cell’s membrane system, where proteins are sorted and sent onward.
By helping membrane proteins stay in the right location, the ZDHHC8 gene supports orderly cell communication. This helps everyday signaling happen in a more coordinated way.
What is a variant?
A genetic variant is a minor change in the DNA sequence within a gene. These changes are common and help make up normal human diversity, such as 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 substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the ZDHHC8 gene can change the protein's shape, stability, or how much of it the cell makes, which may weaken its enzyme activity and disrupt how it adds fatty acid tags to other proteins. This explains how variants influence the ZDHHC8 gene's function at a cellular level. Some variants cause only a partial drop in activity, while more severe variants can shorten the protein or stop it from being made at all.
How variants are linked to conditions
Variants in the ZDHHC8 gene do not yet have a broadly confirmed link to a specific health condition, so information on how variants in the ZDHHC8 gene are linked to conditions is still evolving. Anyone with a confirmed ZDHHC8-related diagnosis should use their own test result and guidance from their doctor or genetic counselor to understand what it means for them.
A variant is not necessarily a diagnosis
Genetic variants are a routine part of human biology and are widely seen in the general population. Most have no direct impact 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 definite diagnosis, especially when more than one gene and environmental factors 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 health risk related to the ZDHHC8 gene itself. If a change in ZDHHC8 is found as part of a larger chromosome change, overall risk can depend more on that broader genetic finding and family history than on ZDHHC8 alone.
Inheritance of ZDHHC8 variants
There is not yet a broadly confirmed, disease-specific Mendelian pattern for how variants of the ZDHHC8 gene are inherited, so the answer to how variants of the ZDHHC8 gene are inherited remains cautious and research-based. The ZDHHC8 gene is located on chromosome 22, which is an autosome. That means you inherit one copy from your mother and one copy from your father. Any health effect linked to a ZDHHC8 variant may depend on the exact change and the wider genetic background.
What does my ZDHHC8 result mean for my family?
There isn't yet a broadly confirmed inheritance pattern tied to a specific condition for ZDHHC8, though this understanding can change as research develops. If you have a specific ZDHHC8 result and questions about what it could mean for your family, a doctor or genetic counselor can explain it in the context of your personal and family history.
Genetic information
Genetic testing
How you find out about variants
Genetic testing for variants in the ZDHHC8 gene usually uses a blood or saliva sample and is most often included in a multigene panel, exome sequencing, or genome sequencing. The lab reads your DNA and classifies any finding as benign, uncertain, or disease causing, which helps show whether a variant may be relevant to your health.
When should I consider getting a genetic test?
There is not yet a broadly established reason to order genetic testing just for the ZDHHC8 gene. Testing decisions are usually based on the bigger health picture, such as developmental concerns, mental health history, or a known chromosome finding in the family, and are best discussed with a doctor or genetic counselor.
A genetic result is only one part of your health story
A result from genetic testing can provide useful insight, but how informative it is depends on the condition and on the kind of variant found. Over time, many factors, including lifestyle, environment, age, and medical history, affect how the body functions. For some conditions, particularly those shaped by many genes, genetic information offers context rather than certainty and makes the most sense when viewed alongside other parts of care. In other situations, a genetic finding may give a clear answer. In areas like medication response, genetic results can also help put personal experiences into context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can help explain why the same medicine works well for one person, causes side effects in another, or seems to do little for someone else. Small differences in genes can change how the body breaks down a medicine, moves it into tissues, or responds at the medicine’s target. These inherited differences are common and may influence how strongly a treatment works or how sensitive a person is to side effects.
What is Pharmacogenetics?
Pharmacogenetics is the study of how genetic differences affect the way people respond to medications. It examines the connection between genes and drugs to help explain why the same treatment works differently from one person to another. For many medicines, genes influence how strongly a drug works or how the body processes it. This information can support treatment decisions that are more informed and more individualized. More on this topic is available in the LearnHub.
Drugs influenced by the ZDHHC8 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choices or predicting side effects, so any concerns about symptoms, side effects, or how well a treatment is working are best discussed with your doctor or pharmacist.
History
The ZDHHC8 gene entered research during efforts to map the 22q11.2 region of chromosome 22, a stretch of DNA already known for its role in a condition now called 22q11.2 deletion syndrome. In the early 2000s, interest in this gene grew after studies explored whether it might contribute to the higher chance of schizophrenia seen in some people with that deletion. From these first observations, research expanded steadily. Over time, scientists learned that the 22q11.2 region acts through several genes, which made early ideas about ZDHHC8 more nuanced. Today, the ZDHHC8 gene is mainly remembered as part of that broader chapter in psychiatric and chromosome research.