The SLURP1 gene helps control how skin cells grow and mature, especially in the thicker skin of the palms and soles. If this gene does not work properly, that skin can become unusually thick, red, sweaty, and prone to painful cracking. Pathogenic variants in the SLURP1 gene cause mal de Meleda, a rare inherited skin condition that mainly affects the hands and feet. Changes in this gene can make everyday tasks like walking, gripping, or writing less comfortable.
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 directions for making proteins, which are the working parts of cells. Others mainly help control when certain processes happen, where they happen, and how strongly they run. Together, genes influence 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
SLURP1Gene function
What if the gene works
The SLURP1 gene helps skin cells mature normally, especially in the thick skin of the palms and soles. Its protein supports the skin barrier and helps keep the skin surface balanced.
Risk
What if the gene does not work
Variants in the SLURP1 gene can cause Mal de Meleda, a rare inherited condition with thickened skin on the palms and soles that may spread. Milder and more severe variants can affect when it starts and how noticeable it becomes.
Treatment
What does that mean for your treatment
No SLURP1-specific treatment or drug choice is currently established. Care is based on managing skin symptoms rather than changing medicines according to the SLURP1 gene.
Conditions associated with SLURP1
Gene function
What if the gene works
The SLURP1 gene helps the outer layer of your skin renew itself in a controlled way. Its protein is released by skin cells and supports signals that guide growth, maturation, and surface protection. Proper activity of the SLURP1 gene helps skin cells move through these steps in an orderly pattern.
The SLURP1 gene makes a protein that skin cells release to communicate with nearby cells. These signals help coordinate everyday activity in the outer skin and support balanced cell behavior.
One of its main roles is to help skin cells mature in an orderly way as they move toward the surface. This supports normal skin renewal and a steady buildup of the outer layer.
Proper SLURP1 activity helps skin cells form a compact, protective surface. This is especially important in high-friction areas such as the palms and soles, where skin needs to stay strong during daily use.
What is a variant?
A genetic variant is a minor difference in the DNA sequence of a gene. These differences are common and help shape normal human diversity, including variation in appearance, metabolism, or how the body responds to environmental factors. Many variants do not cause any noticeable effect and are simply part of natural genetic diversity. In some situations, though, a variant can change how a gene functions to a greater extent and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Variants in the SLURP1 gene often change the shape of the SLURP1 protein, especially when they affect cysteine building blocks that help it fold correctly. Many SLURP1 gene variants make the protein unstable, reduce its release from cells, or weaken how it interacts with signals in the outer skin. Milder variants may leave some activity, while more severe variants can lead to little or no working protein and are often linked to earlier or more pronounced palm and sole thickening.
How variants are linked to conditions
Pathogenic variants in the SLURP1 gene cause mal de Meleda, a rare inherited skin condition with marked thickening of the palms and soles. In SLURP1 gene variants linked to mal de Meleda, the skin changes often begin in early childhood and may spread onto the backs of the hands and feet. This diagnosis is usually confirmed when a person has disease causing variants in both copies of the SLURP1 gene.
A variant is not necessarily a diagnosis
Genetic variants are a routine part of human biology and are common throughout the general population. Most do not have a direct effect on health and simply reflect natural human diversity. For many genes, carrying a variant associated with a condition indicates a possible connection rather than a definite diagnosis, especially when several genes and environmental factors are involved. In some situations, however, a single well-characterized variant in a particular gene is enough to confirm a diagnosis.
Are there things that can increase or change my risk?
For SLURP1, risk is mostly set by inheritance rather than lifestyle. A child is affected when they inherit a changed SLURP1 copy from both parents, so risk is higher in families with known SLURP1 changes or when parents are related by blood. Heat, friction, and repeated rubbing can worsen skin symptoms, but they do not cause the condition itself.
Inheritance of SLURP1 variants
SLURP1-related conditions are inherited in an autosomal recessive pattern. In practical terms, SLURP1 gene inheritance usually means a child needs to receive one altered copy from each parent to have the condition; when both parents are carriers, each pregnancy has a 25% chance of an affected child, a 50% chance of a carrier child, and a 25% chance of a child with two usual copies. Parents who carry one SLURP1 variant typically do not have the condition themselves. Because the SLURP1 gene is on chromosome 8, it can be passed on by either parent to sons or daughters.
What does my SLURP1 result mean for my family?
For families with a disease-causing change in the SLURP1 gene, the pattern is usually recessive, which means close relatives may be healthy carriers without knowing it. Brothers and sisters could also be affected or be carriers, especially if both parents carry the same gene change. This can matter for future children and for relatives who are planning a family.
Genetic information
Genetic testing
How you find out about variants
If palm and sole skin thickening runs in your family, SLURP1 genetic testing can look for variants using a blood sample, saliva, or a cheek swab. A lab reads the DNA sequence of the SLURP1 gene and may also check for missing or extra pieces. Results can confirm a diagnosis or show whether you carry a familial variant.
When should I consider getting a genetic test?
Consider SLURP1 testing if someone has marked thickening and redness of the skin on the palms and soles that began in childhood, or if this condition runs in the family. A result can help confirm the cause of this inherited skin condition and clarify family planning risks for relatives.
A genetic result is only one part of your health story
A genetic test result can provide useful insight, but how much it explains depends on the condition and the kind of variant involved. Many factors, including lifestyle, environment, age, and medical history, shape how the body works over time. For some conditions, especially those influenced by many genes, genetic information offers context rather than certainty and is most useful when viewed 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 also help put individual experiences into 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 breaks down a drug, moves it through the bloodstream, or responds to it at its target. This helps explain why the same treatment works well for one person, seems weaker for another, or causes more side effects in someone else.
What is Pharmacogenetics?
Pharmacogenetics is the study of how genetic differences affect a person’s response to medications. It examines connections between genes and drugs to help explain why the same treatment may work differently from one person to another. For many medicines, genes influence how the body processes a drug and how strong its effects are. This information can support more informed, more individualized treatment decisions. You can learn more about this topic in the LearnHub.
Drugs influenced by the SLURP1 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medication choice or amount, so questions about medicines, side effects, or overall health are best discussed with your doctor.
History
SLURP1 entered medical genetics through studies of mal de Meleda, a rare inherited skin condition first described on the Adriatic island of Mljet, historically called Meleda. For many years, doctors recognized the family pattern from skin findings alone, without knowing the exact gene involved. Initially understood only through visible traits, later recognized as tied to a specific gene, this picture became clearer in the early 2000s when researchers identified variants in the SLURP1 gene in affected families. From these first observations, research expanded steadily to include families from other regions, showing that the condition was not limited to one island population. This history helped connect older clinical descriptions with modern genetic diagnosis.