The CCDC88A gene helps nerve cells grow, move into place, and keep their internal support system organized, especially as the brain develops. The protein made by this gene helps your cells control movement and shape during this process. If the gene does not work properly, it can lead to major problems with brain development and function, including low muscle tone, seizures, developmental delay, and a smaller than expected head size. The CCDC88A gene is mainly discussed in specialist genetics and neurology care rather than in popular media.
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 directions for making proteins, which are the working parts of cells. Other genes mainly help determine when certain processes happen, where they happen, and how strongly they operate. As a group, genes affect how the body develops and works, and they can also influence how you respond to food, stress, or medications. For a more detailed look at this topic, you can find additional information in the LearnHub.
Overview
CCDC88AGene function
What if the gene works
The CCDC88A gene helps cells keep their shape and move in a coordinated way. It is especially important in the developing brain, where it supports the growth and placement of nerve cells.
Risk
What if the gene does not work
More disruptive variants in the CCDC88A gene can cause a severe brain development condition with early seizures, very delayed development, low muscle tone, and progressive brain shrinkage, while milder variants may lead to a less severe neurologic picture.
Treatment
What does that mean for your treatment
For people with a pathogenic or loss-of-function variant in the CCDC88A gene, no treatment approach or drug choice based specifically on this gene is currently established. The CCDC88A gene is being studied in cancer research as a possible biomarker and drug target, but this has not yet changed routine care.
Conditions associated with CCDC88A
Gene function
What if the gene works
Understanding the function of the CCDC88A gene helps explain how cells keep their shape, move in an organized way, and respond to signals around them. Its protein, often called girdin, works as a connector between the cell membrane and the inner support network. These routine jobs matter in many tissues during normal growth and upkeep.
The CCDC88A gene helps cells move in a directed, organized way. Its protein connects outside signals to actin, the cell’s support framework, so the cell can shift position smoothly.
This gene helps arrange actin fibers and keep a stable front and back. That support lets cells spread, attach, and change shape when needed.
The CCDC88A gene acts as a bridge between cell surface sensors and internal message systems. This helps cells tune movement and other routine responses to nearby cues.
Its protein helps cells keep polarity, meaning an organized orientation with distinct sides. This layout supports orderly movement and positioning in tissues.
What is a variant?
A genetic variant is a small difference in the DNA sequence of a gene. These differences are common and help account for normal human diversity, such as variations in appearance, metabolism, or how the body responds to environmental influences. Many variants have no noticeable effect and simply represent natural genetic variation. In some cases, though, a variant can change the function of a gene more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the CCDC88A gene can affect protein function by changing the protein’s shape, shortening it, or causing the cell to break it down early. This can weaken signaling and cell movement in developing nerve cells. More disruptive variants often leave little or no working protein, while milder variants may preserve some activity. In people with disease-causing variants, greater loss of function often links to earlier and more marked neurologic features.
How variants are linked to conditions
Pathogenic variants in both copies of the CCDC88A gene cause a rare inherited neurodevelopmental condition, often described as PEHO syndrome or a related PEHO-like condition. Many children with this diagnosis have severe developmental delay, low muscle tone, seizures, and brain changes on MRI, especially cerebellar shrinkage. Finding pathogenic CCDC88A variants in both copies can confirm the diagnosis.
A variant is not necessarily a diagnosis
Genetic variants are a usual part of human biology and are widely seen in the general population. Most do not have a direct effect on health and instead reflect normal 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, one well characterized variant in a specific gene can be 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 CCDC88A gene. For conditions linked to harmful CCDC88A changes, risk is mainly tied to the genetic change itself rather than lifestyle or environmental factors.
Inheritance of CCDC88A variants
CCDC88A-related conditions that have been clearly described in families follow an autosomal recessive inheritance pattern. This means a child inherits two altered copies of the CCDC88A gene, one from each parent, while parents who carry one altered copy are usually unaffected carriers. When both parents carry a CCDC88A variant, each pregnancy has a 25% chance of being affected, a 50% chance of resulting in a carrier child, and a 25% chance of inheriting neither altered copy. In practical terms, how CCDC88A variants are inherited is the same for sons and daughters, and either parent can pass the variant on.
What does my CCDC88A result mean for my family?
For families with a disease-causing CCDC88A result linked to a recognized condition, this is most often relevant in a recessive pattern, which means parents may be healthy carriers and brothers or sisters could also be affected or be carriers. Close relatives may wish to learn whether they carry the family’s variant, especially when planning children. The family impact depends on the exact result and the condition it is tied to.
Genetic information
Genetic testing
How you find out about variants
Genetic testing for CCDC88A variants usually uses blood, saliva, or a cheek swab. A laboratory reads the DNA in the CCDC88A gene and compares it with the usual sequence to look for variants that may help explain a confirmed genetic diagnosis or clarify whether a variant runs in a family.
When should I consider getting a genetic test?
Genetic testing for the CCDC88A gene may be worth discussing if a child has unexplained early developmental delays, seizures, low muscle tone, or brain imaging changes, especially if similar problems run in the family. It can also help clarify the cause after broader genetic testing points to CCDC88A.
A genetic result is only one part of your health story
Genetic results can provide useful insight, although what they can tell you varies with the condition and the kind of variant present. Over time, the way the body functions is shaped by many factors, including lifestyle, environment, age, and medical history. In some conditions, particularly those affected by many genes, genetic information offers context rather than certainty and makes the most sense when viewed together with other parts of care. In other situations, a genetic finding may give a clear answer. In areas like medication response, genetic results can help put personal experiences in 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 body, or responds to it at its target. This helps explain why the same medication may work well for one person, seem less effective for another, or cause more side effects in someone else. These differences are common and are one part of the bigger picture, along with age, other health conditions, and other medicines.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences affect the way people respond to medications. It focuses on relationships between genes and drugs to help explain why the same treatment may work differently from one person to another. For many medicines, genes influence both how strongly a drug works and how the body processes it. This information can support treatment decisions that are better informed and more personalized. To learn more about this subject, you can visit the LearnHub.
Drugs influenced by the CCDC88A gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choices, so questions about side effects, new symptoms, or whether a treatment is right for you are best discussed with your doctor or pharmacist.