The CEP63 gene helps your cells organize the machinery they need to divide properly. This gene plays an important role in early brain and body growth, especially when many cells are rapidly copying and separating their genetic material. If the CEP63 gene does not work well, cell division can be disrupted, which may lead to a rare inherited condition with a very small head size at birth, short stature, and developmental delays.
What is a gene?
A gene is a stretch of DNA that carries information your cells use to make molecules or regulate processes in the body. Some genes hold the instructions for making proteins, which are the parts of cells that do much of the work. Others mainly help determine when certain processes happen, where they take place, and how strongly they operate. Taken together, genes influence how the body develops and works, and they can shape how you respond to food, stress, or medications. To look at this topic in more detail, you can learn more in the LearnHub.
Overview
CEP63Gene function
What if the gene works
The CEP63 gene helps cells copy their centrosomes, structures that organize the cell’s internal skeleton during cell division. This supports accurate chromosome movement and healthy growth, especially in the developing brain.
Risk
What if the gene does not work
Reduced function of the CEP63 gene is linked to a rare condition affecting growth and brain development, often with small head size, short stature, and developmental differences. Milder or more severe variants can influence which features appear and how strongly.
Treatment
What does that mean for your treatment
For pathogenic or loss-of-function variants in the CEP63 gene, no CEP63-specific treatment or drug-selection approach is currently established in clinical guidelines. Care is based on the person’s symptoms and supportive management rather than a CEP63-directed medicine.
Conditions associated with CEP63
Gene function
What if the gene works
Every day, many of your cells need to divide in a controlled way. The CEP63 gene helps set up the tiny structures that guide this process. When it is working normally, cells can prepare for division with clear internal organization.
The CEP63 gene helps organize the centrosome, a small structure that helps cells line up and separate chromosomes during division. This keeps the cell’s division machinery arranged in the right place.
Its protein helps bring other centrosome proteins to the right spot at the right time. This supports the normal copying of the cell’s division center before one cell becomes two.
By supporting centrosome function, the CEP63 gene helps cells build the spindle, the set of fibers that pulls chromosomes apart. This is part of how the CEP63 gene supports normal cell division in growing tissues.
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, or how the body responds to environmental influences. Many variants do not have any noticeable effect and are simply part of natural genetic variation. Sometimes, however, a variant changes 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 CEP63 gene can change the shape or amount of the CEP63 protein, making it less stable or less able to work at centrosomes, the cell structures that organize division. This helps explain how CEP63 gene variants affect cell division. Milder variants may leave some protein activity, while more severe loss of function variants can leave little or none, causing a bigger effect on early brain development and, in some cases, earlier or more marked CEP63 related features.
How variants are linked to conditions
Pathogenic variants in the CEP63 gene cause Seckel syndrome 6, a rare inherited condition marked by very small head size, poor growth before and after birth, and developmental differences. In practice, CEP63 gene variants linked to Seckel syndrome are usually found when a person inherits a nonworking copy from each parent. Reports also describe overlap with primary microcephaly, but the main well-established association is Seckel syndrome.
A variant is not necessarily a diagnosis
Genetic variants are common across the general population and are a normal feature of human biology. Most do not directly affect health and instead reflect natural variation among people. For many genes, having a variant associated with a condition points to a possible link rather than a certain diagnosis, particularly when several genes and environmental influences play a role. In other situations, though, one well-understood variant in a particular gene may be enough to confirm the diagnosis.
Are there things that can increase or change my risk?
For CEP63, risk is mainly shaped by inheritance rather than lifestyle. A child’s chance of having a CEP63-related condition is higher when both parents carry a harmful CEP63 change, so family history and parents being blood relatives can increase the chance that the same gene change is passed down.
Inheritance of CEP63 variants
CEP63-related conditions are inherited in an autosomal recessive pattern. This means a person usually develops a CEP63-related condition only when they inherit two changed copies of the CEP63 gene, one from each parent, while parents with one changed copy are typically unaffected carriers. In practical terms for CEP63 inheritance in families, when both parents carry a variant in the CEP63 gene, each pregnancy has a 25% chance of an affected child, a 50% chance of a child who is a carrier, and a 25% chance of a child with two working copies.
What does my CEP63 result mean for my family?
Changes in the CEP63 gene linked to disease are passed down in a recessive way, so relatives may be healthy carriers without knowing it. Brothers and sisters of an affected child may also be affected or may be carriers, and other close family members could be carriers too. This can matter for future pregnancies in the family.
Genetic information
Genetic testing
How you find out about variants
To find out whether you carry a variant in the CEP63 gene, CEP63 genetic testing analyzes DNA from a blood sample, saliva, or a cheek swab. A lab compares your gene sequence with a reference to look for changes. Results can show a benign variant, a disease-causing variant, or a change that needs interpretation.
When should I consider getting a genetic test?
Consider CEP63 genetic testing when a child has a head size much smaller than expected from birth, poor growth, and developmental delay, especially if others in the family have a similar pattern. It can also be considered after an ultrasound or exam suggests a rare inherited condition affecting early brain and body growth.
A genetic result is only one part of your health story
A genetic result can provide valuable insight, though how much it reveals depends on the condition and the specific type of variant involved. How the body functions over time is also shaped by many factors, including lifestyle, environment, age, and medical history. For some conditions, especially those influenced by many genes, genetic information provides context rather than certainty and is best interpreted alongside other parts of care. In other situations, a genetic result may offer 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. Small differences in DNA can change how the body breaks down a drug, moves it through the bloodstream, 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 is the area of study that looks at how genetic differences affect the way people respond to medications. It examines connections between genes and drugs to better explain why the same treatment can work differently from one person to another. With many medicines, genes can influence either how strongly a drug works or how the body processes it. This information can help guide treatment choices that are both more informed and more individualized. More detailed information about this topic is available in the LearnHub.
Drugs influenced by the CEP63 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication response, so general concerns about medicines, side effects, or changes in how you feel are best discussed with your doctor.