The RARA gene helps cells respond to signals related to vitamin A, which guide normal growth, development, and the maturing of blood cells. This gene plays an important role in helping early blood cells turn into fully working cells. If the gene is disrupted, cells may stay immature and build up, which can lead to acute promyelocytic leukemia, a specific type of blood cancer. Doctors pay close attention to this gene because some RARA changes also help explain why certain leukemia treatments work.
What is a gene?
Genes are stretches of DNA that give your cells instructions for making molecules or guiding activity in the body. Some genes carry the code for proteins, which do much of the cell’s work. Others mainly regulate when certain processes happen, where they happen, and how active they are. Taken 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
RARAGene function
What if the gene works
The RARA gene helps cells respond to retinoic acid, a form of vitamin A. It helps control when certain genes turn on or off, supporting normal cell growth, development, and blood cell maturation.
Risk
What if the gene does not work
Variants affecting the RARA gene can block normal white blood cell maturation and cause acute promyelocytic leukemia. Milder or more severe variants may influence how early problems appear and which features develop.
Treatment
What does that mean for your treatment
Simple loss-of-function changes in the RARA gene do not have their own established treatment approach. When the RARA gene is joined to another gene, treatment often includes all-trans retinoic acid (ATRA), usually with arsenic trioxide or chemotherapy. This is best established for PML::RARA, while some rarer RARA fusions may respond less well and can change drug choices.
Conditions associated with RARA
Gene function
What if the gene works
Your body uses the RARA gene to help cells respond to vitamin A related signals. These signals guide when cells should grow, pause, and mature, especially in blood-forming tissue. By helping control other genes, RARA supports orderly day-to-day cell behavior.
The RARA gene makes a receptor protein that senses signals related to vitamin A inside cells. After receiving that signal, it helps turn selected genes on or off so cells can follow the right instructions.
One of the RARA gene’s main roles is to help immature cells become more specialized. This maturing process, called differentiation (cells taking on a specific role), helps tissues maintain the right balance of cell types.
RARA activity helps cells balance division with pausing and maturing. This gives cells clearer timing, so growth stays coordinated with each cell’s stage and job.
In bone marrow, the RARA gene helps early blood cells move through normal stages of development. This supports the steady formation of mature white blood cells used in everyday immune defense.
What is a variant?
A genetic variant is a slight difference in the DNA sequence within a gene. These differences are common and help shape normal human diversity, including variation in appearance, metabolism, and the way the body responds to environmental factors. Many variants do not have any noticeable effect and are simply part of natural genetic variation. Sometimes, though, a variant can change how a gene works more significantly and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the RARA gene can change how the receptor folds, binds retinoic acid, or attaches to DNA and partner proteins, which alters gene control inside the cell. Some milder changes partly weaken signaling, while more severe variants can sharply reduce activity or create an abnormal joined protein such as PML-RARA. This is how variants influence the RARA gene's function: they disrupt cell maturation. In acute promyelocytic leukemia, more disruptive changes may also affect treatment response.
How variants are linked to conditions
When people read about the RARA gene and acute promyelocytic leukemia, the key link is an acquired gene rearrangement, most often the PML::RARA fusion, which causes this leukemia and helps confirm the diagnosis. Acute promyelocytic leukemia is a specific subtype of acute myeloid leukemia. These changes usually arise in blood-forming cells during life rather than being inherited through families.
A variant is not necessarily a diagnosis
Variants in genes are a routine part of human biology and are widely seen across the population. Most do not directly affect health and simply contribute to normal human variation. For many genes, having a variant associated with a condition points to a possible link, not 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 everyday factors that increase or reduce risk related to the RARA gene itself. Most well-known RARA changes are linked to a specific blood cancer and usually happen in blood cells during life rather than being inherited. Anyone with concerns about personal risk should speak with a doctor or genetic counselor.
Inheritance of RARA variants
There is not yet a broadly confirmed, disease-specific Mendelian pattern for how RARA gene variants are inherited. Much of the best-known clinical relevance of the RARA gene involves acquired changes in blood cells during acute promyelocytic leukemia, rather than a variant passed through a family. For people looking into how RARA gene variants are inherited, it helps to know that the RARA gene is located on chromosome 17, which is an autosome. That means each person usually has two copies of this gene, with one inherited from each parent.
What does my RARA result mean for my family?
There is not a broadly confirmed inherited pattern for RARA tied to a specific family condition. Many RARA findings are changes that happen only in blood or bone marrow cells, especially in a certain type of leukemia, so they usually do not mean relatives are at higher risk or need testing based on that result alone. If your result came from inherited DNA rather than cancer cells, the meaning for family members depends on the exact change found.
Genetic information
Genetic testing
How you find out about variants
Testing for changes in the RARA gene usually uses a blood, saliva, or tumor sample, depending on why testing is being done. Genetic testing for RARA variants reads the gene's DNA and may be part of a multigene panel or broader sequencing, while suspected leukemia often needs blood or bone marrow tests that look for a RARA fusion.
When should I consider getting a genetic test?
Consider RARA testing when doctors suspect a specific blood cancer called acute promyelocytic leukemia. Testing looks for a change involving the RARA gene in leukemia cells, which can confirm the diagnosis and help guide treatment.
A genetic result is only one part of your health story
Genetic results can be informative, although how much they reveal depends on the condition and on the specific type of variant involved. Over time, the way the body works is shaped by many factors, including lifestyle, environment, age, and medical history. In some conditions, especially those affected by many genes, genetic information provides context rather than certainty and is most useful when considered with other parts of care. In other situations, a genetic result can offer a clear answer. In areas such as medication response, these results can help put individual experiences in perspective.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. Small differences in genes 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 medication may work well for one person, have less effect in another, or cause more side effects in someone who is more sensitive to it.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences can affect a person’s response to medications. It looks at connections between genes and drugs to help explain why the same treatment may work differently from one person to another. For many medicines, genes influence how the body processes a drug or how strong its effects are. This information can support more informed and individualized treatment decisions. You can read more about this topic in the LearnHub.
Drugs influenced by the RARA gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in routine medication response, so general questions about medicines, side effects, or treatment changes are best discussed with your doctor. RARA is mainly relevant in a specific blood cancer called acute promyelocytic leukemia, where changes involving RARA in cancer cells can help guide treatment choices.
History
In recent decades, awareness of the RARA gene’s role has grown through its link to a distinctive form of leukemia called acute promyelocytic leukemia. In the late 1980s and early 1990s, researchers showed that a chromosome swap involving the RARA gene was a defining feature of this condition. Building on this early work, scientists connected that finding to treatment with all trans retinoic acid, a major step in cancer care because it turned a genetic clue into a targeted therapy. This helped make acute promyelocytic leukemia one of the clearest examples of precision medicine in blood cancer. Over time, the RARA gene became an important landmark in the history of cancer genetics and treatment research.