The AURKB gene helps guide cell division by making sure chromosomes line up, separate properly, and the cell splits in two. If it does not work well, cells can end up with the wrong number of chromosomes or fail to divide normally. This gene plays an important role in tissues that need steady cell renewal, such as skin and blood. Changes in AURKB activity are also linked to some cancers.
What is a gene?
Genes are stretches of DNA that carry instructions your cells use to make molecules or manage processes in the body. Some genes provide the directions for producing proteins, which are the parts of cells that do much of the work. Other genes mainly help regulate when certain processes happen, where they happen, and how active they are. Together, genes affect how the body develops and works, and they can influence how you respond to food, stress, or medications. For a deeper look at this topic, you can learn more in LearnHub.
Overview
AURKBGene function
What if the gene works
The AURKB gene helps control cell division. It supports accurate chromosome movement and timing, so new cells separate their genetic material properly before splitting into two cells.
Risk
What if the gene does not work
More disruptive variants in the AURKB gene can cause mosaic variegated aneuploidy syndrome, with growth restriction, microcephaly, and developmental delay. Milder variants may leave some protein activity and lead to a less severe presentation.
Treatment
What does that mean for your treatment
For a pathogenic or loss-of-function variant in the AURKB gene, no AURKB-specific treatment or management approach is currently established. In research, the AURKB gene is being studied as a cancer biomarker and drug target, including with aurora kinase inhibitors, but this has not become routine care.
Gene function
What if the gene works
When cells divide, timing and accuracy matter. AURKB gene function centers on guiding that process so each new cell gets the right set of chromosomes. The AURKB gene helps coordinate chromosome movement, checks their connections, and supports the final split into two cells.
The AURKB gene switches key proteins on and off during mitosis, the process cells use to make two new cells. This helps the main steps of cell division happen in the right order.
It helps chromosomes line up at the center of the cell before they separate. This makes it more likely that each new cell receives a balanced set of chromosomes.
It checks whether chromosomes are linked correctly to the spindle, the fibers that pull them apart. If a link is uneven, it helps release and remake that connection so the pull becomes balanced.
Near the end of division, it moves to the area between the two forming cells and helps organize the final split. This supports cytokinesis (the pinching step that separates one cell into two).
What is a variant?
A genetic variant is a minor difference in the DNA sequence of a gene. These differences are common and are part of normal human diversity, including variation in appearance, metabolism, and how the body responds to environmental influences. Many variants do not have any noticeable effect and simply represent 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 AURKB gene can change the protein’s shape, stability, or kinase activity (its ability to add control signals to other proteins), which helps explain how variants in the AURKB gene affect cell division. Milder variants may only partly reduce this activity or weaken where the protein sits in dividing cells. More severe variants can sharply disrupt chromosome separation and the final split into two cells, sometimes leaving cells with the wrong amount of DNA.
How variants are linked to conditions
Current evidence has not broadly confirmed how variants in the AURKB gene are linked to specific health conditions, though this may change as research develops. If you have a confirmed AURKB-related finding, your doctor or genetic counselor can explain what it may mean for you and your family.
A variant is not necessarily a diagnosis
Variants in genes are a routine part of human biology, and they are common throughout the general population. Most do not have a direct effect on health and instead represent natural human diversity. For many genes, carrying a variant associated with a condition suggests a possible link rather than a definite diagnosis, especially when multiple genes and environmental factors also contribute. 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 AURKB gene. If AURKB appears on a test result, its meaning usually depends on the exact change found and the wider clinical picture, so a doctor or genetic counselor can help put personal risk into context.
Inheritance of AURKB variants
For families trying to understand how AURKB gene variants are inherited, there is not yet a broadly confirmed Mendelian inheritance pattern tied to a specific AURKB related condition. Research on this gene is still developing, so inheritance may become clearer over time. The AURKB gene is located on chromosome 17, which is an autosome, so each person inherits one copy from each parent.
What does my AURKB result mean for my family?
For families affected by AURKB-related mosaic variegated aneuploidy syndrome, the pattern is recessive, which means parents are often healthy carriers of one changed copy of the gene. Brothers and sisters may also be carriers, and in some families another child could also be affected. Close relatives may also want to learn whether they carry the family’s AURKB change, especially when planning a pregnancy.
Genetic information
Genetic testing
How you find out about variants
To find AURKB variants, doctors use genetic testing for the AURKB gene, usually on a blood or saliva sample. A lab reads the DNA sequence and checks for changes in the gene. Results can show whether a variant is present and whether it is known to be linked to disease.
When should I consider getting a genetic test?
Consider AURKB testing if a child has severe growth restriction, a very small head size, developmental delay, or lab findings showing chromosome mix-ups, especially if similar problems have affected siblings. Testing can help confirm a rare inherited condition linked to changes in both copies of the AURKB gene.
A genetic result is only one part of your health story
Genetic results can offer useful insight, but how much they reveal depends on the condition and the type of variant involved. Over time, many factors, including lifestyle, environment, age, and medical history, also shape how the body works. For some conditions, especially those influenced 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 may give 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. Two people can take the same treatment, yet one may get a better effect while the other may be more sensitive to side effects because their bodies absorb, break down, or handle the drug differently. This kind of variation is common and is one reason medication response is not the same for everyone.
What is Pharmacogenetics?
Pharmacogenetics examines how differences in genes can affect a person’s response to medicines. By looking at connections between genes and drugs, it helps explain 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 handles it. This information can support treatment decisions that are more informed and more individualized. More detailed information on this topic is available in the LearnHub.
Drugs influenced by the AURKB gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding everyday medication choices, so general questions about side effects, new symptoms, or treatment changes are best discussed with your doctor. AURKB has mainly been studied in cancer research as a drug target, rather than as a routine genetic marker used to choose medicines.
History
AURKB entered the scientific literature in the late 1990s, during a period when researchers were identifying human genes related to the aurora family first studied in model organisms such as fruit flies. Early work linked this family to the mechanics of cell division, which made AURKB part of a broader effort to understand how cells separate their chromosomes accurately. From these first observations, research expanded steadily. In the 2000s, interest in the AURKB gene grew as cancer studies found that altered activity of this gene could appear in several tumor types. That history placed AURKB on the map as an important research target in both basic cell biology and cancer medicine.