The RAD23A gene helps cells recognize DNA damage and supports the cleanup of proteins that need to be broken down. If it does not work properly, cells may have more trouble repairing everyday damage from sources like sunlight, which can add stress over time. This gene plays an important role in keeping genetic material stable as cells grow and divide. RAD23A is mainly discussed in research rather than in everyday health news.
What is a gene?
Genes are sections of DNA that carry instructions your cells use to make molecules or manage processes in the body. Some genes provide the information needed to make proteins, the parts that do much of the cell’s work. Other genes mainly regulate when certain processes happen, where they happen, and how strongly they are carried out. In combination, genes affect how the body develops and functions, and they can influence how you respond to food, stress, or medications. For a more detailed look at this topic, you can find additional information in the LearnHub.
Overview
RAD23AGene function
What if the gene works
The RAD23A gene helps cells repair DNA damage, especially damage from UV light. It also helps move unwanted proteins to the cell’s recycling system, supporting routine cell upkeep.
Risk
What if the gene does not work
Variants in the RAD23A gene can range from milder changes to more severe ones. More disruptive variants may weaken DNA damage repair and the delivery of damaged proteins to the cell’s recycling system.
Treatment
What does that mean for your treatment
No RAD23A-specific treatment or management approach is currently established in clinical guidelines for people with a pathogenic variant in the RAD23A gene. RAD23A is being studied in DNA repair and cancer biology, but this research does not currently guide routine drug choices.
Gene function
What if the gene works
Your cells are constantly repairing DNA and clearing worn out proteins. The RAD23A gene supports both jobs by helping cells spot certain DNA damage and move tagged proteins toward the cell’s recycling system. Understanding what the RAD23A gene does in the body helps explain how cells stay orderly during everyday wear and tear.
RAD23A works with partner proteins to help cells detect bulky DNA damage, including damage from ultraviolet light. This early step helps the repair system find the right stretch of DNA to fix.
Once damage is found, the RAD23A gene helps keep the repair process organized during nucleotide excision repair (a pathway that removes and replaces damaged DNA sections). This supports accurate reading and copying of DNA.
RAD23A also helps carry certain proteins marked with ubiquitin (a small tag used for protein handling) to the proteasome, the cell’s recycling system. This supports routine protein cleanup and steady cell function.
What is a variant?
A genetic variant is a minor difference in the DNA sequence within a gene. These differences are common and form part of normal human diversity, including variation in appearance, metabolism, and how the body responds to environmental influences. Many variants do not cause any noticeable effect and simply represent natural genetic variation. At times, though, a variant can change how a gene works more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the RAD23A gene can change the RAD23A protein’s shape, stability, or ability to bind repair partners and marked proteins waiting to be broken down. In descriptions of how variants in the RAD23A gene affect protein function, the impact can range from milder variants that partly reduce these interactions to more severe variants that shorten the protein or stop it from being made. This often leaves less working protein in the cell.
How variants are linked to conditions
The RAD23A gene does not yet have a broadly confirmed link to a specific health condition, so the picture of how RAD23A gene variants are linked to conditions is still developing. Anyone with a confirmed RAD23A finding should rely on guidance from their doctor or genetic counselor for interpretation in the context of their own health and family history.
A variant is not necessarily a diagnosis
Genetic variants are a routine part of human biology and are common across the general population. Most do not have a direct effect on health and simply reflect natural human variation. For many genes, carrying a variant associated with a condition indicates a possible link rather than a certain diagnosis, especially when several genes and environmental factors are involved. In some situations, however, 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 isn't yet broadly confirmed evidence on specific factors that increase or reduce health risk related to the RAD23A gene. Anyone with concerns about personal or family risk can talk with a doctor or genetic counselor for advice based on their own history.
Inheritance of RAD23A variants
There is not yet a broadly confirmed inheritance pattern tied to a specific human condition for the RAD23A gene, so how variants of the RAD23A gene are inherited in a disease setting is still being clarified. The RAD23A gene is located on chromosome 19, which is an autosome, so you inherit one copy from each parent. In general, changes in autosomal genes can be passed down through either side of a family.
What does my RAD23A result mean for my family?
There is not yet a broadly confirmed inheritance pattern tied to a specific health condition for RAD23A. If you have a RAD23A result and want to understand what it could mean for relatives, 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 whether you carry a change in the RAD23A gene, a lab can analyze DNA from a blood sample or saliva sample through RAD23A genetic testing to find variants. The test reads the gene’s code and reports whether a variant is present, often as part of a multigene panel or broader sequencing.
When should I consider getting a genetic test?
There isn't yet a broadly established RAD23A-specific clinical reason for testing. Decisions about genetic testing are usually based on your personal health history, family history, and whether a doctor or genetic counselor thinks a broader test would be useful.
A genetic result is only one part of your health story
A genetic finding can provide useful insight, but how much it reveals depends on the condition and the type of variant involved. Lifestyle, environment, age, and medical history are among the many factors that shape how the body functions over time. For some conditions, especially those influenced by many genes, genetic information provides context rather than certainty and is best viewed alongside other parts of care. In other situations, a genetic finding may offer a clear answer. In areas like medication response, genetic results can help put individual experiences into perspective.
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 body, or responds to it at its target. This helps explain why the same treatment works well for one person, seems weaker for another, or causes more side effects in someone else. These differences are common and are one reason medication response can vary from person to person.
What is Pharmacogenetics?
Pharmacogenetics looks at how differences in genes can shape the way a person responds to medications. It studies links between genes and drugs to help explain why the same treatment can work differently from one person to another. For many medicines, genes affect both how strongly a drug works and how the body processes it. This information can help support more informed, more individualized treatment decisions. You can learn more about this topic in the LearnHub.
Drugs influenced by the RAD23A gene
When should I seek medical advice?
There isn't yet a broadly confirmed role for this gene in guiding medicine choices, so general concerns about symptoms, side effects, or treatment plans are best discussed with your doctor. RAD23A has been studied in early research on how some cancer medicines that damage DNA may work, but this is not part of routine prescribing.
History
RAD23A entered the scientific literature in the early 1990s, when researchers identified it as the human counterpart of an earlier yeast gene called RAD23. That work grew out of broader efforts to understand how cells respond to DNA damage and maintain normal cell activity. From these first observations, research expanded steadily. Scientists then mapped the RAD23A gene, compared it with the closely related RAD23B gene, and clarified that the two genes are similar but not identical. Unlike genes that became widely known through public health campaigns or celebrity stories, RAD23A has remained mainly part of specialist genetics and cell biology research. Its history is therefore a quiet but important chapter in the wider story of modern human genetics.