The CDCA7 gene helps cells grow and divide by supporting how DNA is organized and copied. If it does not work properly, it can cause a rare inherited condition called ICF syndrome, which may lead to immune system problems, repeated infections, slower growth or development, and certain facial features. Some people with variants in the CDCA7 gene also have low levels of infection fighting antibodies. CDCA7 is mainly known in medical genetics rather than in popular culture.
What is a gene?
A gene is a stretch of DNA that carries instructions your cells use to make molecules or regulate processes in the body. Some genes provide the directions for making proteins, the parts of cells that do the work. Other genes mainly help determine when certain processes happen, where they happen, and how strongly they operate. Together, genes affect how the body develops and functions, and they can influence how you respond to food, stress, or medications. To go deeper into this topic, you can find more in the LearnHub.
Overview
CDCA7Gene function
What if the gene works
The CDCA7 gene helps cells grow and divide in a controlled way. It also supports DNA methylation, a marking system that helps control gene activity and chromosome stability.
Risk
What if the gene does not work
More severe variants in the CDCA7 gene can cause ICF syndrome, with immune problems, frequent infections, and developmental differences. Milder variants may reduce gene function less, so features can appear earlier or later and range from subtle to more marked.
Treatment
What does that mean for your treatment
No CDCA7-specific treatment or drug choice is currently established in clinical guidelines. Care for people with pathogenic variants in the CDCA7 gene is based on the problems they develop, rather than on a medicine aimed at CDCA7. The CDCA7 gene is being studied in cancer research as a biomarker and possible drug target, but this has not led to routine treatment decisions.
Conditions associated with CDCA7
Gene function
What if the gene works
Your cells need the CDCA7 gene during growth and renewal. It helps manage how DNA is packaged and marked so the right instructions are used at the right time. Understanding what the CDCA7 gene does in your cells helps explain how tissues keep renewing themselves in an orderly way.
The CDCA7 gene supports orderly cell growth and division. Its protein is most active when cells are preparing to make new cells, helping growth stay coordinated.
Inside the nucleus, the CDCA7 gene works with the HELLS gene to adjust how tightly some DNA regions are packed. This gives cells better access to parts of the genetic instructions they need during growth.
One of its main jobs is helping maintain DNA methylation (chemical tags that help control gene activity), especially in repetitive stretches of DNA. This supports stable chromosome organization and steady day to day cell function.
What is a variant?
A genetic variant is a minor difference in the DNA sequence within a gene. These differences are common and help explain normal variation among people, such as differences in appearance, metabolism, or the way the body responds to environmental influences. Many variants do not have any noticeable effect and are simply part of natural genetic variation. Sometimes, though, a variant changes how a gene works more substantially and can contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the CDCA7 gene often reduce or shut down the CDCA7 protein by making it unstable or by disrupting its link with HELLS, which can lower DNA methylation, the chemical tagging that helps organize tightly packed DNA. This shows how CDCA7 gene variants affect function: repetitive DNA becomes poorly controlled and chromosomes less stable. Milder variants may leave some activity, while more disruptive variants can bring earlier or more marked features of ICF syndrome.
How variants are linked to conditions
Pathogenic variants in the CDCA7 gene cause immunodeficiency, centromeric instability, and facial anomalies syndrome type 3, often called ICF syndrome type 3. This rare inherited condition can involve recurrent infections, low antibody levels, growth and development differences, and distinctive facial features. In affected families, finding pathogenic variants in both copies of the CDCA7 gene can confirm the diagnosis.
A variant is not necessarily a diagnosis
Genetic variants are common in the general population and are a normal feature of human biology. Most do not have a direct effect on health and simply contribute to natural human diversity. For many genes, carrying a variant associated with a condition suggests a possible link rather than a definite diagnosis, especially when several genes and environmental factors are involved. 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?
For CDCA7, risk is mainly shaped by whether disease-causing changes in this gene are inherited in a family, rather than by lifestyle or everyday exposures. There is no broadly confirmed evidence that diet, exercise, or other common habits change the chance of having a CDCA7-related condition.
Inheritance of CDCA7 variants
CDCA7-related conditions are inherited in an autosomal recessive pattern. This means a child usually inherits one altered copy of the CDCA7 gene from each parent, and both parents are typically healthy carriers. When both parents carry a CDCA7 variant, each pregnancy has a 25% chance of the child inheriting both altered copies, a 50% chance of being a carrier, and a 25% chance of inheriting neither altered copy. In practical terms, CDCA7 inheritance usually affects brothers and sisters in the same family rather than appearing in every generation.
What does my CDCA7 result mean for my family?
Changes in the CDCA7 gene are linked to a rare inherited condition that usually runs in families in a recessive pattern. For family members, this often means parents may be healthy carriers, and brothers or sisters could also be affected or be carriers. Close relatives may want to learn whether the same gene change is present, especially if there is a family history of immune problems, frequent infections, or developmental concerns.
Genetic information
Genetic testing
How you find out about variants
To find out whether changes in the CDCA7 gene are present, genetic testing for CDCA7 variants reads DNA from a blood sample or saliva. Labs usually use a gene panel or exome sequencing and may add copy number analysis to look for missing or extra pieces. Results can help confirm or rule out a genetic cause of ICF syndrome.
When should I consider getting a genetic test?
Genetic testing for the CDCA7 gene may be worth considering when someone has signs of the rare ICF syndrome, such as repeated infections, low immune proteins, slow growth or development, and certain facial features. It can also help when this condition is known in the family or when related genes are being checked to explain these symptoms.
A genetic result is only one part of your health story
Genetic test results can provide meaningful information, but how much they reveal depends on the condition and on the type of variant involved. Many factors, including lifestyle, environment, age, and medical history, influence how the body functions over time. For some conditions, especially those shaped by many genes, genetic information offers context rather than certainty and is most useful when viewed alongside other parts of care. In other situations, a genetic result may offer a clear answer. In areas such as medication response, genetic results can 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 genes 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 else. These differences are common and are one reason treatment response can vary from person to person.
What is Pharmacogenetics?
Pharmacogenetics is the area of study that looks at how genetic differences affect the way medications work for different people. It examines links between genes and drugs to better understand why the same treatment may not work the same way from one person to another. With many medicines, genes can influence both how strongly a drug works and how the body processes it. This information can help support more informed and more individualized treatment decisions. You can learn more about this topic in the LearnHub.
Drugs influenced by the CDCA7 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 concerns about side effects, treatment changes, or your overall health are best discussed with your doctor or pharmacist.
History
In recent decades, awareness of the CDCA7 gene’s role has grown through studies of cell growth and inherited conditions. It was first identified in cancer biology research as a gene active in dividing cells, which is reflected in its name, cell division cycle associated 7. From these first observations, research expanded steadily, and scientists later linked harmful variants in the CDCA7 gene to a rare inherited condition called ICF syndrome, which affects the immune system and development. That discovery helped connect earlier lab findings with real health effects in families. Over time, descriptions became more precise as genetic testing clarified how changes in this gene fit into the broader picture of rare genetic conditions.