The CCDC138 gene helps build and organize the sperm tail, which is needed for sperm to move normally. This gene plays an important role in sperm development, so some inherited variants can lead to sperm with poor movement or abnormal shape and may contribute to male infertility. CCDC138 is mostly discussed in fertility medicine and genetics, not in celebrity or news stories.
What is a gene?
Genes are sections of DNA that provide instructions your cells use to make molecules or regulate processes in the body. Some genes carry the information needed to produce proteins, the parts of cells that do the work. Others mainly help determine when and where certain processes take place and how strongly they operate. Together, 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 explanation of this topic, you can find more in the LearnHub.
Overview
CCDC138Gene function
What if the gene works
The CCDC138 gene helps sperm develop their normal shape and tail. Its protein supports structures that allow sperm to move.
Risk
What if the gene does not work
More disruptive variants in the CCDC138 gene have been linked to male infertility, usually because sperm tails form abnormally and move poorly. Milder variants may have smaller effects, while more severe variants can cause greater fertility problems or no sperm movement.
Treatment
What does that mean for your treatment
No CCDC138-specific treatment or management approach is currently established for people with a pathogenic or loss-of-function variant in the CCDC138 gene.
Gene function
What if the gene works
During sperm development, the CCDC138 gene helps cells organize structures that give sperm their shape and movement. Its protein supports the orderly building of the sperm tail and nearby supporting parts, which is important for normal sperm formation.
The CCDC138 gene helps assemble the flagellum, the tail that drives sperm movement. When it works properly, the tail forms with the organized internal support needed for swimming.
Inside developing sperm cells, this protein helps keep structural parts aligned as the cell matures. That steady organization supports the final shape of the sperm cell and its connection between head and tail.
What is a variant?
A genetic variant is a slight difference in the DNA sequence within a gene. These differences are common and help explain normal variation between people, such as appearance, metabolism, or the way the body reacts to environmental influences. Many do not have any noticeable effect and are simply part of natural genetic diversity. At times, though, a variant changes how a gene works more significantly and can contribute to, or sometimes cause, a genetic condition.
Genetic variants
What if the gene does not work
Variants in the CCDC138 gene can change how the protein is made, folded, or connected to partner proteins in developing sperm cells. Milder variants may leave some protein activity, while more disruptive variants can shorten the protein or stop it from being made. These stronger changes often interfere more with sperm tail building and sperm movement, which can be linked to more pronounced fertility problems.
How variants are linked to conditions
Variants in the CCDC138 gene do not yet have a broadly confirmed link to a specific health condition, although research on CCDC138 gene variants and health conditions is still developing. Findings may change as more studies are published. If you have a confirmed variant in the CCDC138 gene, your doctor or genetic counselor can explain what it may mean in the context of your personal and family history.
A variant is not necessarily a diagnosis
Genetic variants are common across the general population and are a routine part 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 some situations, though, one well understood 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 CCDC138 gene. If a change in CCDC138 has been found in your family or on genetic testing, a doctor or genetic counselor can help explain what it may mean for your personal risk.
Inheritance of CCDC138 variants
There is not yet a broadly confirmed disease specific CCDC138 inheritance pattern in human genetics, so how CCDC138 gene variants are inherited for health conditions is still being clarified. CCDC138 is located on an autosome, which means everyone inherits two copies of the CCDC138 gene, one from each parent. If a health link is confirmed in the future, the exact inheritance pattern will depend on the specific variant and condition involved.
What does my CCDC138 result mean for my family?
There is not yet a broadly confirmed inheritance pattern tied to a specific health condition for CCDC138, though this can change as research develops. If you have a CCDC138 result and want to understand what it could mean for relatives, a doctor or genetic counselor can explain it in the context of your personal and family history.
Genetic information
Genetic testing
How you find out about variants
To find changes, genetic testing for variants in the CCDC138 gene usually uses a blood or saliva sample. A lab reads the DNA sequence and compares it with the usual version to identify variants. Results may show a benign change, a variant of uncertain significance, or a variant linked to a genetic condition.
When should I consider getting a genetic test?
There is not yet a broadly established, CCDC138-specific clinical reason for genetic testing in routine care. Testing decisions are usually best made with a doctor or genetic counselor, based on your symptoms and family history.
A genetic result is only one part of your health story
Genetic results can be informative, but how much they reveal varies with the condition and the kind of variant involved. Over time, the way your body functions is shaped by many factors, including lifestyle, environment, age, and medical history. For some conditions, particularly those affected by many genes, genetic information provides context rather than certainty and makes the most sense when considered with other parts of care. In other situations, a genetic result can offer a clear answer. In areas like medication response, genetic results can also help put individual experiences into perspective.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how your body responds to medicines. Some people break down a drug faster or slower than others, so the same treatment may work better, work less well, or cause more side effects in one person than in another. This kind of difference is common and is one reason medication response can vary even when people take the same dose.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences can shape the way a person responds 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 can affect both how strongly a drug works and how the body processes it. This information can support more informed and more individualized treatment decisions. More information on this topic is available in the LearnHub.
Drugs influenced by the CCDC138 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choices. Questions about side effects, treatment response, or new symptoms are best discussed with your doctor or pharmacist.