The PRMT8 gene is most active in the brain, where it helps nerve cells handle protein signals and form healthy connections. If it does not work properly, brain development and communication between nerve cells can be affected. People with rare harmful variants in the PRMT8 gene may have developmental delay, learning difficulties, speech differences, or changes in movement and muscle tone. PRMT8 is mainly known in research and clinical genetics rather than in popular culture.
What is a gene?
Genes are sections of DNA that hold instructions your cells use to make molecules or manage processes in the body. Some genes provide the directions for producing proteins, which are the active parts of cells. Others mainly guide when certain processes happen, where they take place, and how active they are. Taken together, genes affect how the body grows and works, and they can influence how you respond to food, stress, or medicines. For a more detailed look at this topic, you can find additional information in the LearnHub.
Overview
PRMT8Gene function
What if the gene works
The PRMT8 gene is mainly active in brain nerve cells. It helps add small chemical tags to proteins, supporting brain development, cell signaling, and communication between neurons.
Risk
What if the gene does not work
Changes in the PRMT8 gene can range from milder to more severe variants, which may reduce or disrupt the cell's ability to add small methyl marks to certain proteins. This can alter nerve cell signaling and membrane handling.
Treatment
What does that mean for your treatment
No PRMT8-specific treatment or drug selection approach is currently established in clinical guidelines for people with a pathogenic or loss-of-function variant in the PRMT8 gene.
Gene function
What if the gene works
In daily life, the PRMT8 gene is most active in nerve cells, where it helps brain cells manage routine signaling and upkeep. It mainly works by adding small chemical marks to certain proteins, which can change how those proteins act or where they go. This supports steady communication between neurons.
The PRMT8 gene adds small chemical marks to selected proteins in nerve cells. These marks help fine tune how proteins work, interact, and move inside the cell.
Much of the PRMT8 gene function in brain cells happens near the cell membrane, the cell’s outer layer. Working in this area helps neurons coordinate local signals used for everyday communication.
Protein from the PRMT8 gene helps neurons maintain the growth and shape of their branches and contact points. This supports stable links between brain cells as messages pass from one cell to the next.
What is a variant?
A genetic variant is a small change in the DNA sequence within 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 cause any noticeable effects and simply represent natural genetic variation. In some situations, however, a variant can change how a gene functions more significantly and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
How PRMT8 gene variants affect protein function often depends on the type of DNA change. Some variants may slightly reduce the protein's activity or stability, while more severe variants can distort its shape, block its attachment to the cell membrane, or stop the protein from being made. These differences can lead to milder or stronger changes in how cells place small chemical tags on other proteins, which can alter signaling inside nerve cells.
How variants are linked to conditions
Right now, the PRMT8 gene does not yet have a broadly confirmed link to a specific health condition, so information on how PRMT8 gene variants are linked to conditions is still developing. Anyone with a reported variant in the PRMT8 gene should use their clinician’s or genetic counselor’s guidance to understand what that result may mean for their health.
A variant is not necessarily a diagnosis
Genetic variants are a common and expected part of human biology across the general population. Most do not directly affect health and simply reflect natural human variation. For many genes, having a variant associated with a condition points to a possible link rather than a certain diagnosis, particularly when several genes and environmental influences play a role. In some situations, though, one well understood variant in a particular 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 PRMT8 gene. If PRMT8 is part of your test results and you are concerned about what it may mean for you or your family, a doctor or genetic counselor can help put it in context.
Inheritance of PRMT8 variants
There is not yet a broadly confirmed, disease-specific inheritance pattern for PRMT8 gene variants, so how PRMT8 gene variants are inherited in relation to a specific condition is still being clarified. PRMT8 is located on chromosome 12, which is an autosome rather than a sex chromosome. That means you inherit one copy of the PRMT8 gene from your mother and one copy from your father.
What does my PRMT8 result mean for my family?
There is not yet a broadly confirmed inheritance pattern tied to a specific condition for PRMT8, though this understanding can change as research develops. If you have a specific PRMT8 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 PRMT8 gene, a lab usually studies DNA from a blood or saliva sample. This type of genetic testing for PRMT8 variants reads the gene's code and looks for differences that may help explain certain neurologic or developmental findings. Results are interpreted alongside your symptoms and family history.
When should I consider getting a genetic test?
There is not yet a broadly established reason to have genetic testing just for the PRMT8 gene. Testing decisions are usually based on your own 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 information it offers varies by the condition and the kind of variant involved. Over time, many factors, including lifestyle, environment, age, and medical history, influence how the body functions. For some conditions, especially those shaped 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 like medication response, genetic results can also help put individual experiences into 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 bloodstream, 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 else.
What is Pharmacogenetics?
Pharmacogenetics examines how differences in a person’s genes can affect the way they respond to medications. It focuses on gene-drug relationships to help explain why the same treatment may work differently in different people. With many medicines, genes influence how the body handles a drug and how strong its effects are. This information can support treatment choices that are more informed and tailored to the individual. More detail on this topic is available in the LearnHub.
Drugs influenced by the PRMT8 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medicine response, so questions about side effects, new symptoms, or treatment changes are best discussed with your doctor.
History
In recent decades, awareness of the PRMT8 gene’s role in human biology has grown. PRMT8 was identified in the early 2000s during a period when researchers were mapping many genes involved in cell signaling and gene control. Early reports drew attention to its strong activity in the brain, which made it stand out from several related genes studied at the same time. From these first observations, research expanded steadily, with later studies helping place PRMT8 within a broader family of genes important in nervous system research. Its history is mainly a scientific one, shaped by advances in genetics and brain biology rather than by major public events.