The CLIC5 gene helps support tiny cell structures that are especially important in the inner ear and the kidneys. These structures help with hearing, balance, and the kidney’s ability to keep protein in the blood. If the gene does not work properly, a person may develop hearing loss, sometimes along with balance symptoms or kidney changes such as protein in the urine. Variants in the CLIC5 gene are uncommon and are mainly linked to inherited hearing conditions.
What is a gene?
A gene is a stretch of DNA that holds instructions your cells use to make molecules or manage processes in the body. Some genes carry the information needed to make proteins, which do much of the cell’s work. Other genes mainly regulate when certain processes happen, where they happen, and how active they are. Together, genes affect how the body develops and works, and they can also influence how you respond to food, stress, or medications. For a deeper look at this topic, you can learn more in the LearnHub.
Overview
CLIC5Gene function
What if the gene works
The CLIC5 gene helps support the inner ear’s sound sensing hair cells and the kidney’s filtering cells. Its protein helps keep tiny cell projections stable, which supports hearing and normal kidney filtration.
Risk
What if the gene does not work
When the CLIC5 gene does not work properly, it is linked to inherited sensorineural hearing loss that may range from milder to more severe and can worsen over time. Some people also have balance problems.
Treatment
What does that mean for your treatment
No treatment or drug choice is currently guided specifically by a pathogenic variant in the CLIC5 gene. Care is based on a person’s hearing and balance needs rather than a CLIC5 targeted approach.
Conditions associated with CLIC5
Gene function
What if the gene works
Everyday actions like hearing a voice or keeping your balance depend in part on the CLIC5 gene. Its protein helps certain cells hold on to their shape, especially cells with delicate surface projections. This steady support is most important in the inner ear and in parts of the kidney filter.
The CLIC5 gene helps connect the cell membrane to the inner support scaffold made of actin. This helps cells keep a stable shape, especially where the cell surface bends, moves, or faces fluid flow.
In the inner ear, CLIC5 helps steady stereocilia, the tiny projections that detect sound and head movement. A key part of CLIC5 gene function in hearing and balance is keeping these sensing structures organized and securely supported.
In kidney podocytes, CLIC5 supports the foot processes that help form the filter in each glomerulus (tiny blood filtering unit). This support helps the filter stay orderly as the kidneys remove waste and keep useful proteins in the blood.
What is a variant?
A genetic variant is a slight change in the DNA sequence within a gene. These changes are common and are part of normal human diversity, including differences in appearance, metabolism, and the way the body responds to environmental influences. Many variants do not have any noticeable effect and simply represent natural genetic variation. Sometimes, though, a variant changes how a gene functions more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Many variants in the CLIC5 gene linked to CLIC5 gene variants and hearing loss change the protein’s shape or shorten it, so it becomes unstable, is misplaced in the cell, or is missing. This weakens support for stereocilia, tiny projections on inner ear cells that detect sound and balance signals. Milder variants may leave some protein activity, while more severe variants can leave little or none, which may relate to earlier or noticeable hearing and balance problems.
How variants are linked to conditions
Pathogenic variants in the CLIC5 gene can cause an inherited form of hearing loss called autosomal recessive nonsyndromic hearing loss. In some families, CLIC5 gene variants linked to hearing loss have also been associated with balance problems or vestibular dysfunction, which can show up as unsteadiness when walking. This association is well established in human genetics, especially when both copies of the gene carry a disease-causing variant.
A variant is not necessarily a diagnosis
Human biology naturally includes genetic variants, and they are common across the general population. Most do not directly affect health and simply reflect normal human diversity. For many genes, a variant associated with a condition points to a possible link rather than a confirmed diagnosis, particularly when several genes and environmental influences play a role. In some situations, though, one well-characterized variant in a particular gene is enough to confirm the 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 risks related to the CLIC5 gene. People with concerns about personal or family risk can talk with a doctor or genetic counselor about what their genetic results may mean.
Inheritance of CLIC5 variants
For families asking how CLIC5 gene variants are inherited, the well-established pattern is autosomal recessive. This means a person usually develops a CLIC5-related condition only when they inherit one altered copy of the CLIC5 gene from each parent. Parents who each carry one variant are often unaffected, and with each pregnancy there is a 25% chance their child will inherit both altered copies, a 50% chance the child will be a carrier, and a 25% chance the child will inherit neither variant.
What does my CLIC5 result mean for my family?
For CLIC5, family implications are usually discussed in the context of a recessive hearing-related condition. Parents of an affected child are often healthy carriers, and brothers or sisters may also be affected or may be carriers. Other relatives, especially siblings and relatives planning children, may wish to learn whether they also carry the family variant.
Genetic information
Genetic testing
How you find out about variants
Variants in the CLIC5 gene are usually found through genetic testing that reads DNA from a blood sample, saliva, or cheek swab. CLIC5 genetic testing is often done as part of a hearing loss panel or broader sequencing, and results may show a causative variant, no relevant variant, or one of uncertain meaning.
When should I consider getting a genetic test?
Consider testing the CLIC5 gene if you or your child has unexplained hearing loss, especially when it starts early, seems to run in the family, or comes with balance problems. Results can help show whether an inherited gene change is part of the cause.
A genetic result is only one part of your health story
A genetic result can provide useful insight, but how much it reveals varies based on the condition and the specific type of variant. Over time, the way the body works is also shaped by many factors, including lifestyle, environment, age, and medical history. In 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 such as medication response, genetic results can help put individual experiences into perspective.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. This helps explain why the same treatment works well for one person, causes more side effects in another, or seems to have less effect in someone else. Part of the difference comes from how the body absorbs, breaks down, and uses a drug. These inherited differences are common and can influence both how well a medication works and how sensitive a person may be to it.
What is Pharmacogenetics?
Pharmacogenetics examines how inherited genetic differences can affect a person’s response to medications. By studying links between genes and drugs, it helps explain why the same treatment may work differently in different people. For many medicines, genes can influence how strongly a drug works or how the body handles it. This information can support treatment decisions that are more informed and more individualized. To explore this subject in greater detail, you can learn more in the LearnHub.
Drugs influenced by the CLIC5 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in predicting how medicines will work or which side effects may happen, so general health concerns and any questions about medications are best discussed with your doctor or pharmacist.