The PRMT3 gene helps cells add small chemical tags to certain proteins and supports the normal building of ribosomes, the structures that make proteins. If the PRMT3 gene does not work well, cells may struggle to make proteins in a steady way, which can disrupt normal growth and function. The protein made by this gene helps your cells keep everyday processes running smoothly.
What is a gene?
A gene is a stretch of DNA that carries instructions your cells use to make molecules or direct processes throughout the body. Some genes hold the code for making proteins, which are the parts of cells that do much of the work. Other genes mostly regulate when certain processes happen, where they occur, and how strongly they are turned on. Together, genes affect how the body develops and functions, and they can shape your response to food, stress, or medications. You can find more on this topic in the LearnHub.
Overview
PRMT3Gene function
What if the gene works
The PRMT3 gene helps cells build working ribosomes, the structures that make proteins. This supports steady protein production needed for normal growth and daily cell function.
Risk
What if the gene does not work
Changes in the PRMT3 gene can range from milder to more severe variants. When PRMT3 works less well, cells may add fewer small chemical tags to certain proteins, which can disrupt ribosome assembly and change how efficiently proteins are made.
Treatment
What does that mean for your treatment
No PRMT3-specific treatment or management approach is currently established for people with a pathogenic variant in the PRMT3 gene. Researchers are studying the PRMT3 gene and its protein as possible drug targets in some cancers and metabolic conditions, but this has not yet changed guideline-based care.
Gene function
What if the gene works
Inside many cells, the PRMT3 gene fine tunes certain proteins, especially ones involved in building ribosomes, the cell's machines for making proteins. Most of this activity takes place in the main fluid of the cell rather than in the nucleus. Understanding what the PRMT3 gene does in the body helps explain how cells keep protein production organized.
The PRMT3 gene adds small chemical tags called methyl marks to selected proteins. These marks can change how a protein behaves, where it stays in the cell, or which partners it works with.
One of its best known jobs is helping prepare ribosomes, the cell's machines for making proteins. It modifies a ribosome protein so the small ribosome unit can mature in an orderly way.
By supporting ribosome assembly, this gene helps cells make proteins in a steady, controlled way. This supports everyday needs such as growth, repair, and replacing worn out cell parts.
What is a variant?
A genetic variant is a small change in the DNA sequence within a gene. These changes are common and help shape normal human diversity, including differences in appearance, metabolism, or how the body responds to environmental influences. Many variants do not cause any noticeable effect and are simply part of natural genetic variation. In some situations, though, 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
Variants in the PRMT3 gene can change the shape, stability, or binding surfaces of the PRMT3 protein, which helps explain how PRMT3 gene variants affect protein function. Some variants may weaken its enzyme activity or alter where the protein sits in the cell, while others can disrupt its contact with partner proteins. Milder variants may leave partial activity, but more severe variants can greatly reduce or abolish activity.
How variants are linked to conditions
At this time, the PRMT3 gene does not yet have a broadly confirmed link to a specific inherited health condition, although research on PRMT3 gene variants linked to conditions is still evolving. If you carry a variant in the PRMT3 gene, your doctor or genetic counselor can interpret it alongside your personal health history and family history.
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 do not have a direct effect on health and simply contribute to natural human diversity. For many genes, carrying a variant associated with a condition suggests a possible link rather than a certain diagnosis, especially when multiple genes and environmental factors play a role. 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 PRMT3 gene. PRMT3 may be studied as part of wider genetic research, but its effect on personal risk is not defined in a way that guides day-to-day prevention. Anyone concerned about their own risk should speak with a doctor or genetic counselor.
Inheritance of PRMT3 variants
There is not yet a broadly confirmed PRMT3 inheritance pattern tied to a specific human condition, so PRMT3 genetic changes are not currently described under one well-established mode such as autosomal dominant or autosomal recessive. As research develops, that picture may become clearer. The PRMT3 gene is located on chromosome 11, which is an autosome, so you inherit one copy from your mother and one copy from your father. In that general sense, how PRMT3 variants are inherited follows the usual pattern for genes on the numbered chromosomes.
What does my PRMT3 result mean for my family?
There is not yet a broadly confirmed inheritance pattern tied to a specific health condition for the PRMT3 gene, and this picture can change as research grows. If you have a specific PRMT3 result and want to understand what it could mean for relatives, a doctor or genetic counselor can help put that result in family context.
Genetic information
Genetic testing
How you find out about variants
Variants in the PRMT3 gene are found through a DNA test using a blood or saliva sample. During genetic testing for PRMT3 variants, a lab reads the gene’s sequence and compares it with a reference to identify changes. Results may show a benign variant, a disease-causing variant, or a variant of uncertain significance.
When should I consider getting a genetic test?
There is not yet a broadly established medical reason to get testing specifically for changes in the PRMT3 gene. Testing decisions are usually based on your own health history and family history, ideally with a doctor or genetic counselor.
A genetic result is only one part of your health story
A genetic finding can provide useful insight, but how much it explains depends on 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 offers context rather than certainty and is best understood together with other parts of care. In other situations, a genetic result can give a clear answer. In areas such as medication response, genetic results can also help put personal experiences into context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. Some people break down a drug faster, while others process it more slowly or are more sensitive to its effects. This helps explain why the same treatment may work well for one person, seem less effective for another, or cause more side effects in someone else. These differences are common and are one part of why medication response can vary from person to person.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences shape a person’s response to medications. By looking at connections between genes and drugs, it helps explain why the same treatment may work differently in different people. For many medicines, genes affect both how the body processes a drug and how strong its effects are. This information can support more informed, more individualized treatment decisions. More on this topic is available in the LearnHub.
Drugs influenced by the PRMT3 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choice or dose, so any concerns about side effects, new symptoms after starting a medicine, or how treatments may affect you are best discussed with your doctor.
History
Research on the PRMT3 gene grew in the late 1990s, when scientists began identifying a broader family of genes involved in protein methylation, a chemical tagging process inside cells. Initially understood only through visible traits, later recognized as tied to a specific gene, this area of research helped place PRMT3 within an important group of human genes studied across cancer biology and cell regulation. From these first observations, research expanded steadily, with laboratory studies clarifying where PRMT3 is active in cells and how it differs from related genes. Over time, scientists’ understanding of the PRMT3 gene has changed, moving from basic gene discovery to a more detailed picture of its place in human biology.