BUD23 helps cells build a small part of the ribosome, the cell’s protein-making machinery. This gene plays an important role in normal growth, brain development, and steady cell function. If both copies of the BUD23 gene do not work properly, the body may make proteins less efficiently, which can lead to developmental delay, smaller head size, short stature, and learning difficulties. BUD23 is mainly known in genetics clinics rather than in popular culture.
What is a gene?
Genes are stretches of DNA that carry instructions your cells use to make molecules or regulate processes in the body. Some genes provide the instructions for proteins, the parts of cells that do much of the work. Others mainly control when certain processes happen, where they happen, and how strongly they occur. Taken together, genes affect how the body develops and works, and they can also influence how you respond to food, stress, and medications. To explore this topic in more detail, you can read more in the LearnHub.
Overview
BUD23Gene function
What if the gene works
The BUD23 gene helps cells build part of the ribosome, the cell’s protein-making machinery. This supports normal protein production and healthy growth, especially in rapidly developing tissues.
Risk
What if the gene does not work
Variants in the BUD23 gene are linked to developmental delay, short stature, and sometimes a small head size or learning difficulties. Milder and more severe variants can affect when features appear and how strongly they affect growth and development.
Treatment
What does that mean for your treatment
No treatment or management approach tailored to the BUD23 gene is currently established for people with a pathogenic variant in the BUD23 gene. The BUD23 gene is being studied for its role in ribosome production and cell growth, including early cancer research, but this does not currently guide drug choices.
Conditions associated with BUD23
Gene function
What if the gene works
Your cells constantly make proteins to repair tissues, grow, and carry out daily work. In simple terms, the BUD23 gene supports ribosome production in human cells, especially the small ribosome unit that reads genetic instructions. This helps cells keep protein making organized and efficient.
The BUD23 gene adds a small chemical mark to 18S ribosomal RNA (an RNA piece of the small ribosome unit). This mark supports orderly finishing steps as the small unit is made.
Inside the cell nucleus, the BUD23 gene helps the small ribosome unit mature before it joins the protein making machinery. It works with other cell helpers so this unit is assembled at the right stage.
By helping build small ribosome units, the BUD23 gene supports the process cells use to read RNA messages and make proteins. Steady protein production helps many tissues handle everyday growth, upkeep, and repair.
What is a variant?
A genetic variant is a minor change in the DNA sequence of a gene. These changes are common and are part of normal human diversity, including differences in appearance, metabolism, and the way the body responds to environmental influences. Many variants do not have any noticeable effect and simply reflect natural genetic variation. In some cases, 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
How variants in the BUD23 gene affect protein function depends on the specific DNA change. Some single-letter variants may partly weaken the protein or its contact with other ribosome-building molecules, while more severe variants that shorten the protein can sharply lower protein levels or stop production altogether. These changes can disrupt assembly of the small part of the cell's protein-making machinery (ribosomes) and reduce protein production in affected cells.
How variants are linked to conditions
Pathogenic variants in both copies of the BUD23 gene cause a rare inherited neurodevelopmental condition. In reports on BUD23 gene variants linked to developmental delay, people often also have intellectual disability, short stature, and sometimes distinctive facial or skeletal features. Findings can vary from one person to another, so the same gene change does not always look identical across families.
A variant is not necessarily a diagnosis
Genetic variants are a usual part of human biology and are common in the general population. Most do not directly affect health and instead reflect natural human diversity. For many genes, having a variant associated with a condition points to a possible link rather than a definite diagnosis, especially when several genes and environmental factors also 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 BUD23 gene. For many living with a BUD23 gene change, the main factor is the genetic change itself, and personal questions about risk are best discussed with a doctor or genetic counselor.
Inheritance of BUD23 variants
For families asking about the BUD23 inheritance pattern, the condition linked to disease-causing variants in the BUD23 gene is inherited in an autosomal recessive way. This means a child usually inherits one nonworking copy from each parent. Parents who each carry one BUD23 variant are often unaffected themselves, and with each pregnancy there is a 25% chance the child will inherit both altered copies, a 50% chance the child will be a carrier, and a 25% chance the child will inherit neither variant.
What does my BUD23 result mean for my family?
For BUD23, the best-known family pattern is recessive, which usually means parents are healthy carriers and brothers or sisters may also be affected or be carriers. Close relatives may also carry the same change without knowing it. For future children in the family, the chance depends on whether both parents carry a BUD23 change.
Genetic information
Genetic testing
How you find out about variants
To find out whether you carry a variant, genetic testing for BUD23 variants usually analyzes DNA from a blood or saliva sample. Labs often check the BUD23 gene through exome sequencing, genome sequencing, or a multigene panel, then compare your result with a reference sequence and classify any variant they find.
When should I consider getting a genetic test?
Testing for the BUD23 gene may be worth considering when a child has unexplained developmental delay, learning problems, slow growth, or a smaller-than-expected head size, especially if similar features run in the family. A genetic result can help confirm whether BUD23 is part of the cause.
A genetic result is only one part of your health story
A genetic finding can provide useful insight, but how much it can tell you depends on the condition and on the kind of variant present. How the body functions over time is shaped by many factors, including lifestyle, environment, age, and medical history. For some conditions, especially those influenced by many genes, genetic information offers context rather than certainty and is best considered alongside other parts of care. In other situations, a genetic result may give a clear answer. In areas like medication response, genetic results can help put personal experiences into context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. One person may break down a drug more slowly, while another may process it faster or be more sensitive to its effects. This helps explain why the same treatment can work well for some people, work less well for others, or cause more side effects in some individuals.
What is Pharmacogenetics?
Pharmacogenetics examines how inherited genetic differences shape a person’s response to medications. It studies connections between genes and drugs to help explain why the same treatment may 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 support treatment decisions that are more informed and more individualized. To explore this topic further, you can learn more in the LearnHub.
Drugs influenced by the BUD23 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in how people respond to medicines, so general questions about side effects, new symptoms, or whether a treatment is right for you are best discussed with your doctor.
History
The BUD23 gene first came to scientific attention through studies in budding yeast, where researchers were mapping genes involved in cell growth and division. In the early 2000s, scientists described BUD23 as part of the cell machinery linked to ribosome production, helping place it within a broader network of genes needed for normal development. Building on this early work, scientists later identified a human counterpart and began studying how changes in this gene relate to growth and developmental features. More recent genetic sequencing studies connected BUD23 variants with a rare inherited condition marked by short stature and developmental differences. These findings turned BUD23 from a laboratory discovery into a gene with clear clinical importance in medical genetics.