The DGKH gene helps control cell signaling by changing one fat messenger into another, a step that is especially important in the brain. If this gene does not work as expected, those signals may become less balanced and affect how nerve cells communicate. Some variants in the DGKH gene have been linked in research studies to mood differences and a higher chance of bipolar disorder, but they do not by themselves make a diagnosis. Understanding this gene can help clarify why brain signaling may vary between people.
What is a gene?
Genes are sections of DNA that give cells the instructions they use to make molecules or regulate activities in the body. Some carry the code for proteins, which are the parts of cells that do much of the work. Others mainly control when certain processes happen, where they happen, and how active they are. Together, genes affect how the body develops and functions, 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
DGKHGene function
What if the gene works
The DGKH gene helps cells manage chemical signals by converting one fat messenger into another. This supports communication inside cells, especially in the brain and in pathways linked to growth and hormone signals.
Risk
What if the gene does not work
Variants in the DGKH gene can weaken how cells handle diacylglycerol, a signaling fat used for cell communication. Milder variants may partly reduce this signaling balance, while more severe variants can disrupt it more strongly.
Treatment
What does that mean for your treatment
No treatment or management approach specific to the DGKH gene is currently established. Researchers have studied the DGKH gene as a possible biomarker in mood disorders, including lithium response, but this is not used to guide routine drug choices.
Gene function
What if the gene works
Cells use the DGKH gene to manage day to day chemical messages. It helps convert one signaling fat into another, which keeps communication inside the cell moving in a controlled way. Understanding how the DGKH gene works helps explain how cells balance incoming signals with the responses they need.
The DGKH gene helps change a signaling fat called diacylglycerol into another messenger called phosphatidic acid. This lets cells lower one message while preparing the next step in the signal.
By controlling these messenger fats, the DGKH gene helps keep cell communication balanced. This supports steady responses when cells react to signals arriving at their surface.
Its protein works at cell membranes, where many messages start. This helps cells pass signals along in the right place and for the right amount of time.
What is a variant?
A genetic variant is a minor change in the DNA sequence within a gene. These changes are common and are part of normal human diversity, including differences in appearance, metabolism, and the way the body responds to environmental influences. Many variants have no noticeable effect and simply represent natural genetic variation. In some situations, though, a variant changes how a gene works more significantly and can contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the DGKH gene can change how much DGKH protein a cell makes, how well it folds, and how effectively it handles lipid signaling molecules. This helps explain how DGKH gene variants affect cell signaling: milder changes may slightly reduce enzyme activity or alter where the protein sits in the cell, while more severe variants can greatly lower protein stability or stop production. These differences can create a spectrum of functional effects rather than one fixed outcome.
How variants are linked to conditions
At this time, variants in the DGKH gene do not yet have a broadly confirmed link to a specific health condition, though research on how variants in the DGKH gene are linked to conditions is still developing. Anyone with a confirmed DGKH-related diagnosis should rely on guidance from their doctor or genetic counselor, since personal test results can need individual interpretation.
A variant is not necessarily a diagnosis
Genetic variants are a normal feature of human biology, and they are common throughout the general population. Most do not have a direct effect on health and instead reflect natural human diversity. 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 are involved. In some situations, though, a single well-characterized variant in a specific 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 DGKH gene. DGKH has been studied most in relation to mood conditions, but any effect appears to be only one small part of overall risk, alongside many other genes and life factors.
Inheritance of DGKH variants
There is not yet a broadly confirmed Mendelian inheritance pattern tied to a specific DGKH-related condition, so DGKH gene inheritance is not described in the same clear way as genes that cause a well-defined inherited syndrome. Research has linked the DGKH gene to certain health traits and risks, but these findings do not support a single established dominant, recessive, or X-linked pattern. The DGKH gene is located on chromosome 13, which is an autosome. That means you inherit one copy of the DGKH gene from each parent.
What does my DGKH result mean for my family?
There is not yet a broadly confirmed inherited pattern linking DGKH changes to a specific, recognized genetic condition in families. If you have a DGKH result and want to know what it could mean for relatives, a doctor or genetic counselor can help interpret it in the context of your family history and the exact result.
Genetic information
Genetic testing
How you find out about variants
Testing for DGKH gene variants usually uses a blood or saliva sample, and a lab reads the DNA sequence to look for differences from the usual reference sequence. Results may show a benign variant, a variant with unclear meaning, or a variant linked to health findings when interpreted with your medical and family history.
When should I consider getting a genetic test?
There is not yet a broadly established, DGKH-specific clinical reason for genetic testing. Decisions about testing are usually based on your personal health history, symptoms, and family history, together 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 explains varies based on the condition and the type of variant involved. Many factors, including lifestyle, environment, age, and medical history, also 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 interpreted alongside other parts of care. In other situations, a genetic result can offer a clear answer. In areas like medication response, it can also help put individual experiences into context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how your body responds to medicines. Small differences in genes can change how a drug is broken down, how strongly it works, or how sensitive you are to side effects. This helps explain why the same treatment can work well for one person, do very little for another, or feel harder to tolerate, even when both take it as prescribed.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences can affect a person’s response to medication. It studies the connection between genes and drugs to better understand why the same treatment may work differently from one person to another. For many medicines, genes can influence both how strongly a drug works and how the body processes it. This understanding can help support more informed, individualized treatment decisions. You can learn more about this topic in the LearnHub.
Drugs influenced by the DGKH gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choices, so general questions about symptoms, treatment, or side effects are best discussed with your doctor. Research on the DGKH gene has looked at whether it may affect response to lithium in people living with bipolar disorder, but this is not established enough to guide routine care.