The IFT88 gene helps cells build and maintain cilia, tiny hair-like structures that sense signals and help move fluid. When this gene does not work properly, cilia may not send signals normally, which can lead to inherited conditions affecting bone growth, the kidneys, the eyes, and sometimes the brain or breathing. Many variants are harmless, while a few may change how the gene supports early development and organ function.
What is a gene?
A gene is a section of DNA that carries instructions your cells use to make molecules or to regulate processes in the body. Some genes provide the instructions for producing proteins, the working parts of cells. Others mostly help determine when certain processes happen, where they happen, and how active they are. Taken together, genes affect how the body grows and works, and they can also influence how you respond to food, stress, or medicines. For more detail on this topic, visit the LearnHub.
Overview
IFT88Gene function
What if the gene works
The IFT88 gene helps build and maintain cilia, tiny hairlike structures on many cells. These structures sense signals and help move fluid in places like the airways. This supports normal development and organ function.
Risk
What if the gene does not work
Variants in the IFT88 gene can disrupt cilia, tiny cell projections that guide growth and sensing. More severe variants are linked to a skeletal condition with short ribs and a narrow chest, while milder variants may affect vision.
Treatment
What does that mean for your treatment
No IFT88-specific treatment or management approach is currently established, so care is based on a person’s symptoms rather than a variant in the IFT88 gene itself. The IFT88 gene is being studied in conditions linked to cilia problems and in some cancers, but this has not changed current drug choices.
Conditions associated with IFT88
Gene function
What if the gene works
Many cells have tiny hairlike structures called cilia that act a bit like antennae. The IFT88 gene provides instructions for a protein that helps build and supply these structures. When this process runs normally, cilia can form, stay organized, and support everyday cell signaling.
The protein made from the IFT88 gene helps cells assemble cilia from their base outward. It brings needed parts into the growing structure so it can take shape in an orderly way.
Inside cilia, this protein helps move cargo to the right place along the structure. This is a central part of what the IFT88 gene does in cilia, keeping these tiny projections supplied and organized.
Cilia are constantly renewed, and the IFT88 gene supports that steady upkeep. By helping fresh parts reach cilia, it helps these structures keep their shape and routine function over time.
Many cells use cilia to sense signals from their surroundings. By helping cilia form and stay supplied, the protein from the IFT88 gene supports communication that guides growth, timing, and tissue organization.
What is a variant?
Within a gene, a genetic variant is a small difference in the DNA sequence. These changes are common and are part of normal human diversity, including differences in appearance, metabolism, or how 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
Variants in the IFT88 gene can change how the protein folds, how stable it is, or how well it joins the transport system inside cilia, the hair-like structures on cells. How variants influence the IFT88 gene's function depends on the change: milder variants may leave some activity in place, while severe loss of function variants can sharply reduce or stop transport inside cilia. This functional range can shape ciliopathy severity, including whether features appear earlier and affect body systems.
How variants are linked to conditions
Variants in the IFT88 gene have been linked to short-rib thoracic dysplasia, a rare inherited condition that can affect rib and chest development, limb length, and sometimes the kidneys, liver, or eyes. This is the main way how IFT88 gene variants are linked to conditions. These cases are uncommon, but when both copies of the gene carry a pathogenic variant, the result can support or confirm the diagnosis.
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 have a direct effect on health and instead represent normal human diversity. For many genes, carrying a variant connected with a condition suggests a possible association rather than a definite diagnosis, especially when multiple genes and environmental factors also contribute. In some situations, though, a single 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 isn't yet broadly confirmed evidence on specific factors that increase or reduce health risk related to the IFT88 gene. When IFT88 is linked to a genetic condition, the main driver is usually the gene change itself rather than lifestyle or everyday exposures, so personal risk is best discussed with a doctor or genetic counselor.
Inheritance of IFT88 variants
For families looking into how variants of the IFT88 gene are inherited, the best-established pattern is autosomal recessive inheritance. This means a person usually inherits one changed copy of the IFT88 gene from each parent, and parents who each carry one variant are often unaffected themselves. When both parents are carriers, each pregnancy has a 25% chance of a child inheriting both changed copies, a 50% chance of being a carrier, and a 25% chance of inheriting neither changed copy. Because the IFT88 gene is on an autosome rather than a sex chromosome, this inheritance pattern is the same for males and females.
What does my IFT88 result mean for my family?
For families with an IFT88-related condition, the pattern is usually recessive, which means parents are often healthy carriers and brothers or sisters may also be carriers or, less often, have the condition. Close relatives may want to learn whether the same gene change runs in the family, especially when planning children. The family impact depends on the exact IFT88 result and the condition linked to it.
Genetic information
Genetic testing
How you find out about variants
To find out whether you carry a change in the IFT88 gene, doctors use genetic testing for IFT88 variants on a blood or saliva sample. A lab reads the gene's DNA code and compares it with the usual sequence to identify variants that may help explain symptoms or support a diagnosis.
When should I consider getting a genetic test?
You may consider genetic testing that includes the IFT88 gene if there is a personal or family history of a rare ciliopathy, such as inherited vision loss, kidney changes, extra fingers or toes, or a baby born with a very small chest and short ribs. In practice, IFT88 is usually checked as part of a broader gene panel rather than as a single-gene test.
A genetic result is only one part of your health story
A genetic result can provide meaningful insight, but what it tells you depends on the condition and the type of variant involved. Factors such as lifestyle, environment, age, and medical history also shape how the body works over time. For some conditions, especially those influenced by many genes, genetic information provides context rather than certainty and is most useful when considered alongside other parts of care. In other situations, a genetic result may give 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 people respond to medicines. Some people break down a drug more slowly or more quickly, so the same dose can lead to different drug levels in the body. This kind of variation is common and can influence how well a treatment works or how sensitive someone is to side effects. Medication response also depends on other factors, including age, kidney and liver function, and other medicines.
What is Pharmacogenetics?
Pharmacogenetics examines the ways genetic variation affects how people respond to medicines. By looking at links between genes and drugs, it helps explain why the same treatment can have different effects in different people. With many medications, genes influence both how the body handles a drug and how much effect it has. This information can support treatment decisions that are better informed and more individualized. More detailed information on this topic is available in the LearnHub.
Drugs influenced by the IFT88 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 someone may have. Questions about medication response, side effects, or other health concerns are best discussed with your doctor or pharmacist.
History
First described in the scientific literature as part of early genetics, the IFT88 gene drew attention through mouse studies in the 1990s, when researchers tracked a gene called Tg737 linked to polycystic kidney disease and developmental changes. Building on this early work, scientists connected Tg737 to the cell’s tiny hair-like structures, helping shift primary cilia from overlooked cell parts to a major focus of medical research. The gene was later recognized as IFT88, a key member of the intraflagellar transport system. This was an important step in the rise of modern cilia research. Over time, the IFT88 gene became part of the broader story showing how cilia-related genes can shape human health and development.