The SLC27A4 gene helps the body take up and use certain fats, especially in skin cells, where those fats help form a strong protective barrier. This gene plays an important role in keeping the skin sealed and working normally. If the gene does not work properly, some people are born with a condition called ichthyosis prematurity syndrome, which can cause premature birth, thick scaly skin, and early breathing problems. The SLC27A4 gene is mainly discussed in genetics and skin 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 in the body. Some genes hold the directions for producing proteins, the parts of cells that do much of the work. Others mainly guide when certain processes occur, where they happen, and how strongly they operate. Together, genes affect how the body develops and functions, and they can shape your response to food, stress, or medications. For a deeper look at this topic, you can find more in the LearnHub.
Overview
SLC27A4Gene function
What if the gene works
The SLC27A4 gene helps cells take in and use certain fats, especially in the skin. This supports a strong skin barrier that helps lock in moisture and protect the body.
Risk
What if the gene does not work
When both copies of the SLC27A4 gene do not work properly, babies can be born early with thick, scaly skin and may have breathing trouble at birth. Different variants can cause milder or more marked skin and allergic features.
Treatment
What does that mean for your treatment
For people with pathogenic variants in the SLC27A4 gene, no SLC27A4-specific treatment or drug choice is currently established in clinical guidelines. Care is usually based on the person’s symptoms rather than on a targeted treatment linked to this gene.
Conditions associated with SLC27A4
Gene function
What if the gene works
Your cells use the SLC27A4 gene to manage certain fats needed each day. It helps bring long chain fatty acids into cells and prepares them for use. Understanding what the SLC27A4 gene does helps explain how cells handle energy, membranes, and other routine tasks.
The SLC27A4 gene helps cells take in long chain fatty acids from their surroundings. These fats are important raw materials that cells use every day.
Inside cells, the SLC27A4 gene helps attach a small chemical tag called CoA, which makes these fats usable. This lets cells direct the fats toward energy production, storage, or building cell membranes.
By preparing fats in a usable form, the SLC27A4 gene supports the making and upkeep of cell membranes. These membranes help cells keep their shape and organize their internal spaces.
What is a variant?
A genetic variant is a minor alteration in the DNA sequence of a gene. These changes are common and help shape 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 reflect natural genetic variation. In some situations, though, a variant can change how a gene functions more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
A key part of how SLC27A4 gene variants affect protein function is that many changes make the FATP4 protein unstable, misfolded, or much less active inside cells. More disruptive variants can nearly stop the protein from working, while milder variants may leave some activity in place. In people with two severely affecting variants, this usually leads to earlier and more marked features of ichthyosis prematurity syndrome, while less damaging changes may have a smaller functional effect.
How variants are linked to conditions
Pathogenic variants in both copies of the SLC27A4 gene cause ichthyosis prematurity syndrome, so the SLC27A4 gene and ichthyosis prematurity syndrome are closely linked in medical genetics. This rare inherited condition is usually recognized around birth and may involve premature delivery, thick peeling skin, and breathing problems in the newborn period. This association is well established and can confirm the diagnosis when the characteristic findings are present.
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 have no direct impact 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 certain diagnosis, especially when several genes and environmental factors also play a role. In some situations, though, a single well-characterized variant in a particular gene can by itself confirm a diagnosis.
Are there things that can increase or change my risk?
For SLC27A4, risk is mainly shaped by genetics rather than lifestyle. The chance of having the related skin condition is much higher when both biological parents carry a harmful SLC27A4 change, and it can also be higher in families where parents are related by blood. There is not enough evidence to say that diet, exercise, or other daily habits lower this genetic risk.
Inheritance of SLC27A4 variants
Variants in the SLC27A4 gene linked to SLC27A4-related ichthyosis prematurity syndrome are inherited in an autosomal recessive pattern. This means a child usually inherits one changed copy of the SLC27A4 gene from each parent. Parents who each carry one variant are typically carriers, and with each pregnancy there is a 25% chance their child will inherit both variants and have the condition, a 50% chance the child will be a carrier, and a 25% chance the child will inherit neither variant. In practical terms, the SLC27A4 inheritance pattern means it can affect more than one child in a family even when the parents do not have symptoms.
What does my SLC27A4 result mean for my family?
For families with a disease-causing SLC27A4 result linked to ichthyosis prematurity syndrome, close relatives may also be carriers, even if they have no symptoms. Brothers and sisters may have a chance of being affected or being carriers, and other blood relatives may also carry the gene change. This can matter for family planning, especially for relatives who have children with someone from the same family or community.
Genetic information
Genetic testing
How you find out about variants
Variants in the SLC27A4 gene are usually found with genetic testing for SLC27A4 variants, using a blood, saliva, or cheek swab sample. A lab reads the DNA code in this gene to look for changes and reports whether a variant was found.
When should I consider getting a genetic test?
Genetic testing for SLC27A4 may be worth considering if a baby is born very early with thick, peeling skin and early breathing problems, or if this rare skin condition runs in the family. It can also show whether parents carry the same gene change after having an affected child.
A genetic result is only one part of your health story
Genetic results can be informative, but what they reveal varies with the condition and the specific type of variant. Over time, the body is also shaped by factors including age, lifestyle, environment, and medical history. In some conditions, particularly those affected by many genes, genetic information provides context rather than certainty and makes the most sense when considered with the rest of care. In other situations, a genetic result may give a clear answer. In areas like medication response, these results can also help put personal experiences in context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. Small differences in genes can change how the body absorbs, breaks down, transports, or responds to a drug, so the same treatment may work better for some people than for others. This is common and can influence how much benefit a medicine provides or how sensitive someone is to side effects.
What is Pharmacogenetics?
Pharmacogenetics examines how differences in a person’s genes affect the way they respond to medicines. By looking at links between genes and medications, it helps explain why the same treatment may work differently in different people. With many drugs, genes can influence how strongly a medicine works or how the body handles it. This information can support treatment choices that are better informed and more individualized. You can read more about this topic in the LearnHub.
Drugs influenced by the SLC27A4 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in predicting how medicines will work, so general questions about side effects, treatment changes, or new symptoms are best discussed with your doctor.