BBS10 helps cells build cilia, tiny antenna-like structures that let many organs sense signals and work together. The protein made by this gene helps your cells keep these structures working, especially in the eyes, kidneys, brain, and reproductive system. When the BBS10 gene does not work properly, pathogenic variants in both copies can cause Bardet-Biedl syndrome, which may lead to progressive vision loss, weight gain, kidney problems, hormone related changes, and sometimes extra fingers or toes.
What is a gene?
Genes are sections of DNA that carry instructions your cells use to make molecules or regulate processes in the body. Some genes provide the information needed to produce proteins, the parts of cells that do much of the work. Other genes mainly help determine when certain processes take place, where they occur, and how strongly they operate. Taken as a whole, genes affect how the body develops and works, and they can also influence how you respond to food, stress, and medications. For a deeper look at this topic, you can find more in the LearnHub.
Overview
BBS10Gene function
What if the gene works
The BBS10 gene helps cells assemble proteins needed for cilia, tiny cell structures that sense signals. This supports normal development and how the eyes, kidneys, and brain work.
Risk
What if the gene does not work
Pathogenic variants in the BBS10 gene can cause Bardet-Biedl syndrome, which often affects vision, weight regulation, kidneys, learning, and sexual development. Effects range from milder to more severe, and this can influence which features appear and when.
Treatment
What does that mean for your treatment
A pathogenic variant in the BBS10 gene can support use of setmelanotide, a drug used in some people with Bardet-Biedl syndrome to help reduce hunger and support weight management. Other care is mainly symptom-based, and no treatment choice is unique to BBS10 compared with other Bardet-Biedl syndrome genes.
Conditions associated with BBS10
Gene function
What if the gene works
Your cells use the BBS10 gene to help build and maintain cilia, which are tiny hair-like structures on the cell surface. These cilia act like antennae and help cells sense signals from their surroundings. Inside the cell, BBS10 also helps other proteins take the right shape so parts used by cilia can be assembled properly.
The BBS10 gene helps certain proteins fold into the right shape so they can work properly. This support is especially important for assembling the group of proteins that cilia use.
BBS10 supports the assembly and upkeep of cilia, the tiny structures many cells use to sense their environment. When this process runs smoothly, cells can keep these antenna-like parts ready for routine tasks.
Because cilia help cells receive and organize messages, BBS10 supports normal cell communication across many tissues. Understanding BBS10 gene function helps explain how cells stay responsive during growth and daily activity.
What is a variant?
A genetic variant is a small difference in the DNA sequence within a gene. These differences are common and help shape normal human diversity, including variation in appearance, metabolism, and 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 may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the BBS10 gene often change the protein’s shape, stability, or length, which helps explain how BBS10 gene variants affect cilia function at the cellular level. Some missense variants leave a partly working protein, while more severe truncating, splice, or deletion variants may leave little or no functional protein and more strongly disrupt protein assembly in primary cilia. In Bardet-Biedl syndrome, this functional spectrum can influence how early features appear and how marked they are, although the pattern varies from person to person.
How variants are linked to conditions
Pathogenic variants in both copies of the BBS10 gene cause Bardet-Biedl syndrome, often called Bardet-Biedl syndrome type 10. In practice, BBS10 gene variants linked to Bardet-Biedl syndrome are associated with a pattern that can include vision loss over time, weight gain, extra fingers or toes, kidney problems, and learning or developmental differences. This is a confirmed genetic diagnosis rather than a general risk signal.
A variant is not necessarily a diagnosis
Genetic variants are a routine part of human biology and are widely found in the general population. Most do not directly affect health and instead reflect natural human variation. For many genes, carrying a variant associated with a condition suggests a possible link rather than a certain diagnosis, especially when several genes and environmental factors play a role. In some situations, though, a single well understood variant in a specific gene is enough to establish the diagnosis.
Are there things that can increase or change my risk?
For BBS10, the main risk comes from family inheritance: Bardet-Biedl syndrome usually happens when a child inherits a harmful BBS10 change from both parents. There is not broadly confirmed evidence that lifestyle or everyday exposures change the chance of having the condition, although features can vary from one person to another.
Inheritance of BBS10 variants
BBS10-related Bardet-Biedl syndrome is inherited in an autosomal recessive pattern. This means a child usually inherits one BBS10 variant from each parent, and both parents are typically healthy carriers. When both parents carry a variant in the BBS10 gene, each pregnancy has a 25% chance of resulting in an affected child, a 50% chance of resulting in a carrier child, and a 25% chance of resulting in a child with neither familial variant. In practical terms, how BBS10 variants are inherited does not differ between sons and daughters because the BBS10 gene is on an autosome, not a sex chromosome.
What does my BBS10 result mean for my family?
BBS10-related Bardet-Biedl syndrome usually runs in families in a recessive pattern, which means close relatives may also carry the same gene change even if they do not have symptoms. Brothers and sisters of someone with a disease-causing BBS10 result may also be affected or be carriers. Other relatives, such as parents and adult family members planning children, may also want to learn whether they carry the same change.
Genetic information
Genetic testing
How you find out about variants
To look for changes linked with Bardet-Biedl syndrome, BBS10 genetic testing uses a blood or saliva sample. A lab reads the DNA in the BBS10 gene and checks for variants that may explain symptoms, confirm a diagnosis, or show whether family members carry the same variant.
When should I consider getting a genetic test?
Consider testing the BBS10 gene if you or your child has signs of Bardet-Biedl syndrome, such as early vision problems, extra fingers or toes, unusual weight gain, kidney problems, or developmental delays. Testing can also help if this condition runs in your family or a relative has a known BBS10 variant.
A genetic result is only one part of your health story
Genetic findings can be informative, but how much they explain varies with the condition and the kind of variant present. How the body works over time is also shaped by factors such as age, environment, lifestyle, and medical history. For 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 like medication response, these results can help place individual experiences in context.
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, has less effect in another, or causes more side effects in someone else. Differences in how the body absorbs, breaks down, transports, or responds to a drug are common and can influence both benefit and sensitivity.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences shape the way a person responds to medications. It looks at 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 influence how strongly a drug works or how the body handles it. This information can support more informed, more individualized treatment decisions. More detailed information on this topic is available in the LearnHub.
Drugs influenced by the BBS10 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 general health concerns, new symptoms, or questions about side effects and treatment choices are best discussed with your doctor or pharmacist.
History
Bardet-Biedl syndrome was first recognized as a clinical condition long before the BBS10 gene was identified. In the early 2000s, researchers studying families affected by this syndrome found that it could be caused by changes in several different genes, which helped explain why symptoms varied from person to person. The BBS10 gene was identified in 2006 as an important cause of Bardet-Biedl syndrome, especially in some European populations. From these first observations, research expanded steadily. Its discovery helped clarify the genetic picture of the condition and became part of the broader story of how rare inherited conditions were mapped gene by gene.