The TMEM237 gene helps make cilia, tiny structures on cells that act like antennas for body signals. This gene plays an important role in how cells sense their surroundings during early development. If it does not work properly, cilia may not function well, which can lead to Joubert syndrome and related conditions, sometimes affecting breathing, movement, vision, the kidneys, or the liver. TMEM237 is mainly known in genetic medicine rather than in popular culture.
What is a gene?
Genes are stretches of DNA that carry instructions your cells use to make molecules or regulate processes throughout the body. Some genes provide the directions for producing proteins, the parts of cells that do much of the work. Others mainly help control when certain processes happen, where they happen, and how strongly they are active. Taken together, genes affect how the body develops and functions, and they can also shape how you respond to food, stress, or medications. For a deeper look at this topic, you can find more in the LearnHub.
Overview
TMEM237Gene function
What if the gene works
The TMEM237 gene helps build the transition zone of primary cilia, tiny cell projections that act like antennae. This supports controlled movement of proteins into and out of cilia and helps cells respond to developmental signals.
Risk
What if the gene does not work
Variants in the TMEM237 gene are linked mainly to Joubert syndrome, which may affect balance, eye movements, breathing, and development, sometimes with kidney or liver involvement. Milder and more severe variants can influence timing and severity.
Treatment
What does that mean for your treatment
For people with a pathogenic variant in the TMEM237 gene, no TMEM237-specific treatment or drug choice is currently established in clinical guidelines. Care is guided by the person’s symptoms and the organs affected, rather than by the TMEM237 variant itself.
Conditions associated with TMEM237
Gene function
What if the gene works
Many cells use a tiny, hair-like structure called a cilium to sense signals around them. The TMEM237 gene helps organize the base of this structure, where materials are checked as they move in and out. A major part of what the TMEM237 gene does is support steady cilia function across many tissues.
TMEM237 helps form a checkpoint area at the base of the cilium. This gate helps control which proteins and other cell materials can enter or leave.
The TMEM237 gene supports the proper assembly of parts at the cilium base. This helps the cilium keep its shape and stay ready to sense outside signals.
By helping cilia stay organized, TMEM237 supports how cells receive and pass along important chemical messages. This helps tissues coordinate normal development and routine cell activity.
What is a variant?
Genetic variants are small differences in the DNA sequence within a gene. They are common and help explain normal differences among people, including appearance, metabolism, and the way the body responds to environmental influences. Many do not cause any noticeable effects and are simply part of natural genetic variation. At times, though, a variant changes how a gene works to a greater degree and may contribute to or lead to a genetic condition.
Genetic variants
What if the gene does not work
Variants in the TMEM237 gene can alter the TMEM237 protein's shape, stability, or placement at the cilia transition zone, which can disrupt protein movement into and out of cilia. More disruptive changes, including variants that truncate the protein, often leave little or no working protein, while some missense variants may keep partial activity. With TMEM237 gene variants linked to Joubert syndrome, this severity range can influence how strongly cilia function is affected and, in some people, how early features appear.
How variants are linked to conditions
The clearest link between TMEM237 gene variants and Joubert syndrome is well established. Pathogenic variants in the TMEM237 gene cause this condition, which can affect coordination, eye movements, breathing patterns in infancy, and development. Some people also have related findings in the eyes, kidneys, liver, or the hands and feet, including extra fingers or toes. Disease caused by pathogenic variants in the TMEM237 gene is usually described as part of the Joubert syndrome spectrum.
A variant is not necessarily a diagnosis
Gene variants are a usual part of human biology and are widely seen in the general population. Most have no direct effect on health and simply reflect 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 play a role. 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 TMEM237, risk is mainly tied to the gene changes inherited in a family rather than day-to-day habits. There is not yet broadly confirmed evidence that lifestyle or environmental factors clearly increase or reduce TMEM237-related risk.
Inheritance of TMEM237 variants
TMEM237-related conditions are inherited in an autosomal recessive pattern. In practical terms, TMEM237 gene inheritance usually means a child needs to inherit one changed copy from each parent to be affected. Parents who each carry one variant are often unaffected themselves, and with each pregnancy there is a 25% chance the child will inherit both variants, a 50% chance the child will be a carrier, and a 25% chance the child will inherit neither variant. This pattern applies to the well-established conditions linked to the TMEM237 gene.
What does my TMEM237 result mean for my family?
For TMEM237, the main family implication is usually a recessive pattern linked to ciliopathy conditions such as Joubert syndrome. Parents of an affected child are often healthy carriers, and brothers or sisters may also be carriers or, less often, have the condition. Other close relatives may also carry the family variant, so the result can matter beyond one person.
Genetic information
Genetic testing
How you find out about variants
To find out about TMEM237 variants, genetic testing usually analyzes DNA from a blood sample or saliva. TMEM237 genetic testing often uses a panel test that checks several related genes, or a broader DNA test, and the lab classifies any variant using established clinical evidence.
When should I consider getting a genetic test?
Genetic testing for the TMEM237 gene may be considered when a child has signs of Joubert syndrome, such as low muscle tone, delayed development, unusual eye movements, or a brain scan pattern linked to this condition. It can also help when Joubert syndrome runs in the family or after a pregnancy affected by the condition.
A genetic result is only one part of your health story
Genetic results can provide valuable insight, but how much they explain depends on the condition and 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 provides context rather than certainty and is best considered alongside other parts of care. In other situations, a genetic result can offer a clear answer. In areas such as medication response, genetic results can also help put individual experiences into context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. This helps explain why the same medication may work well for one person, cause more side effects in another, or seem to have less effect in someone else. Part of the reason is that inherited differences can change how the body breaks down, moves, or responds to a drug, and this kind of variation is common.
What is Pharmacogenetics?
Pharmacogenetics examines how differences in a person’s genes affect the way they respond to medicines. It focuses on gene-drug relationships to clarify why the same treatment can work differently in different people. With many medications, genes influence either how powerfully a drug works or how the body handles it. This information can support treatment decisions that are more informed and more tailored to the individual. More detailed information on this topic is available in the LearnHub.
Drugs influenced by the TMEM237 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 questions about treatment, side effects, or other health concerns are best discussed with your doctor or pharmacist.