The RPS13 gene helps make part of the ribosome, the cell’s protein building machinery. Your body relies on this gene to support normal cell growth and the steady production of blood cells. When a harmful variant reduces how well it works, some people develop Diamond-Blackfan anemia, where the bone marrow makes too few red blood cells. This can lead to tiredness, pale skin, poor growth, or certain birth differences.
What is a gene?
Genes are sections of DNA that carry instructions your cells use to make molecules or regulate activities in the body. Some genes provide the directions for producing proteins, which are the parts of cells that do much of the work. Others mainly control when certain activities take place, where they occur, and how strongly they operate. Taken together, genes affect how the body develops and works, and they can also influence how you respond to food, stress, or medications. More on this topic is available in the LearnHub.
Overview
RPS13Gene function
What if the gene works
The RPS13 gene helps make a protein that forms part of the cell's small ribosome, the structure that reads genetic instructions. This supports everyday protein production needed for growth, repair, and normal cell function.
Risk
What if the gene does not work
Pathogenic variants in the RPS13 gene can cause Diamond-Blackfan anemia, with low red blood cell production causing early tiredness or paleness; some people also have growth or physical differences. Effects may be milder or more severe depending on the variant.
Treatment
What does that mean for your treatment
A pathogenic or loss-of-function variant in the RPS13 gene does not currently direct a specific medicine or management plan in clinical guidelines. Care is based on the condition it causes and the person’s needs, while the RPS13 gene is mainly being studied in ribosomopathy research for future treatment targets.
Gene function
What if the gene works
Every cell needs a steady supply of proteins to grow, repair, and handle daily work. Working within the ribosome, the protein from the RPS13 gene helps cells read RNA instructions and build proteins. This routine job matters in tissues throughout the body.
The RPS13 gene helps the ribosome read RNA instructions and join amino acids into a growing protein. This supports protein synthesis in human cells across the body.
Its protein becomes part of the ribosome’s small subunit, one half of the cell structure that makes proteins. This helps the ribosome keep a stable shape while it starts reading each message.
The RPS13 gene helps the ribosome hold key RNA molecules in the right place during translation (protein assembly). This supports accurate reading of the message before each amino acid is added.
What is a variant?
A genetic variant is a minor change in the DNA sequence of a gene. These changes are common and help shape normal human diversity, such as differences in appearance, metabolism, or how the body responds to environmental influences. Many variants have no noticeable effect and are simply part of natural genetic variation. Sometimes, 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 RPS13 gene variants affect ribosome function depends on the change. Some variants alter the shape or amount of the RPS13 protein, so cells have more trouble building the small ribosome unit that makes proteins. Milder variants may leave partial function, while more severe variants, including changes that shorten the protein or disrupt gene message processing, can reduce function much more. This often leads to less stable ribosome assembly and lower protein production.
How variants are linked to conditions
Pathogenic variants in the RPS13 gene are a confirmed cause of Diamond-Blackfan anemia, a rare inherited condition that mainly affects red blood cell production. In practice, RPS13 gene variants linked to Diamond-Blackfan anemia are most often found in people with anemia that begins in infancy. Some also have short stature or differences involving the face, thumbs, heart, or palate. This result can help confirm the diagnosis when those features are present.
A variant is not necessarily a diagnosis
Variants in genes are a routine feature of human biology and are widely found across the general population. Most do not directly affect health and instead reflect natural differences among people. 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. Sometimes, though, one well-studied 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 factors that increase or reduce health risk related to the RPS13 gene. Anyone concerned about their personal or family risk can talk with a doctor or genetic counselor for advice based on their own history.
Inheritance of RPS13 variants
RPS13-related Diamond-Blackfan anemia usually follows an autosomal dominant inheritance pattern. In practical terms, how RPS13 gene variants are inherited means that one changed copy of the RPS13 gene can be enough to cause the condition, and a parent carrying the variant has a 50% chance of passing it on in each pregnancy. Some people with an RPS13 variant are the first in their family to have it because the variant arose new (de novo) rather than being inherited from either parent.
What does my RPS13 result mean for my family?
A harmful change in the RPS13 gene is linked to a form of Diamond-Blackfan anemia that usually runs in families in a dominant way, so close relatives such as a parent, sibling, or child may also carry the same change. Family members can be affected differently, with some having clear anemia or birth differences and others having few or no symptoms. Some cases happen for the first time in one person, so a parent does not always carry the variant.
Genetic information
Genetic testing
How you find out about variants
To look for changes in the RPS13 gene, genetic testing for RPS13 variants usually examines DNA from a blood sample, saliva, or a cheek swab. Labs may use single-gene testing, a broader inherited anemia panel, or wider DNA sequencing. Results can show a benign variant, a disease-causing variant, or a variant of uncertain significance.
When should I consider getting a genetic test?
Genetic testing for the RPS13 gene may be considered when a baby or child has signs of Diamond-Blackfan anemia, a rare inherited condition that causes very low red blood cells early in life. It can also help when this condition runs in the family or when blood tests suggest an inherited bone marrow condition.
A genetic result is only one part of your health story
A genetic result can be informative, but what it shows depends on the condition and the kind of variant present. Over time, how the body works is also 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 also help put personal experiences into context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how your body responds to medicines. This helps explain why the same treatment may work well for one person, have less effect in another, or cause more side effects in someone else. Differences in how the body absorbs, breaks down, transports, or responds to a drug are common and can shape both benefit and sensitivity. Medication response is usually influenced by several factors at once, including genetics, age, other health conditions, and other medicines.
What is Pharmacogenetics?
Pharmacogenetics is the area of study that examines how inherited genetic differences affect the way people respond to medicines. It explores links between genes and medications to help explain why the same treatment can work differently from one person to another. With many drugs, genes can influence either how much effect a medicine has or how the body handles it. This information can support treatment decisions that are more informed and more tailored to the individual. More detail on this topic is available in the LearnHub.
Drugs influenced by the RPS13 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in predicting how people respond to medicines, so questions about symptoms, new side effects, or whether a treatment is right for you are best discussed with your doctor.