The EMP2 gene helps certain cells organize key proteins at their surface, especially in the kidney’s filtering units, where this supports a tight, stable filter. If the gene does not work properly, that filter can become leaky and allow protein to pass into the urine. Harmful variants in the EMP2 gene are linked to an inherited kidney condition that can cause swelling, heavy protein loss in the urine, and reduced kidney function over time.
What is a gene?
Genes are pieces of DNA that carry instructions your cells use to make molecules or regulate activities in the body. Some genes provide the code for proteins, which do much of the cell’s work. Others are involved mainly in controlling when a process happens, where it happens, and how active it is. Taken together, genes affect how your body develops and functions, and they can influence how you respond to food, stress, and medications. For a deeper look at this topic, you can find more in the LearnHub.
Overview
EMP2Gene function
What if the gene works
The EMP2 gene helps cells place certain proteins on their surface. This supports how cells stick to nearby tissue, send signals, and form stable layers in tissues such as the eye, lungs, and uterus.
Risk
What if the gene does not work
When the EMP2 gene does not work properly, it can cause inherited nephrotic syndrome, often with protein loss in the urine and swelling. Milder or more severe variants may influence when kidney problems begin and how strong the effects are.
Treatment
What does that mean for your treatment
No treatment or management approach is currently tailored specifically to pathogenic variants in the EMP2 gene. The EMP2 gene is being studied mainly as a biomarker and possible drug target in some cancers, but this has not yet led to routine care based on EMP2 variant status.
Conditions associated with EMP2
Gene function
What if the gene works
Your cells use the EMP2 gene to help place key proteins in the right parts of the cell membrane. This supports how lining cells attach, stay organized, and respond to signals from nearby tissue. Understanding EMP2 gene function helps explain how everyday cell communication stays orderly.
The EMP2 gene helps move selected proteins to the cell surface and keep them in the right membrane areas. This gives cells better control over how they sense and respond to their surroundings.
Through its protein, the EMP2 gene supports how cells anchor to nearby tissue by helping display integrins (proteins that help cells grip their surroundings). This steady contact helps cells keep their shape and position.
The EMP2 gene helps cell surface proteins pass along outside signals to the cell's inner control systems. This supports routine processes such as growth, movement, and organized behavior in lining cells.
What is a variant?
A genetic variant is a slight alteration in a gene's DNA sequence. These variants are common and are part of normal human diversity, including differences in appearance, metabolism, and how the body responds to environmental influences. Many have no noticeable effect and simply represent natural genetic variation. In some situations, though, a variant can change gene function to a greater degree and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Many carrying an EMP2 variant want to understand how EMP2 gene variants affect protein function. Some changes alter the protein’s shape, make it unstable, or keep it from reaching the cell surface, while more disruptive variants can leave cells with very little or no working EMP2 protein. Milder variants may allow partial activity, but stronger loss of function is often linked to earlier and more pronounced kidney disease in people with harmful variants in both copies of the EMP2 gene.
How variants are linked to conditions
Pathogenic variants in the EMP2 gene cause nephrotic syndrome type 10, an inherited kidney condition. In this well-established EMP2 gene variant link to kidney disease, many people develop heavy protein loss in the urine, swelling, and reduced kidney function in childhood. Some are also found to have focal segmental glomerulosclerosis, a pattern of kidney scarring seen on biopsy.
A variant is not necessarily a diagnosis
Genetic variants are a routine feature of human biology and are widely found across the population. Most do not directly affect health and instead represent normal human diversity. In many genes, a variant associated with a condition points to a possible link, not a certain diagnosis, particularly when several genes and environmental influences also play a role. Still, in some situations, one well-characterized variant in a particular gene is enough to confirm a diagnosis.
Are there things that can increase or change my risk?
There is not yet broadly confirmed evidence on specific factors that increase or reduce health risk related to the EMP2 gene. If an EMP2 change has been found in your family or in your results, a doctor or genetic counselor can explain what it may mean for your personal risk.
Inheritance of EMP2 variants
The EMP2 inheritance pattern for the best-established related condition is autosomal recessive. This means a child usually inherits one altered copy of the EMP2 gene from each parent, and parents who carry one altered copy are typically unaffected carriers. When both parents are carriers, each pregnancy has a 25% chance of resulting in a child with the condition, a 50% chance of resulting in a carrier child, and a 25% chance of resulting in a child who did not inherit either altered copy. Sons and daughters are affected at the same rate.
What does my EMP2 result mean for my family?
Changes in the EMP2 gene are linked to an inherited kidney condition that usually runs in families in a recessive pattern. For family members, this often means parents may be healthy carriers, and brothers or sisters could also be affected or be carriers even if they feel well. More distant relatives may also carry the gene change, especially on the same side of the family.
Genetic information
Genetic testing
How you find out about variants
Genetic testing for EMP2 variants usually uses a blood or saliva sample. A lab reads the EMP2 gene, either on its own or as part of a larger eye condition panel, and looks for DNA changes linked to inherited retinal disease. Results may show a causative variant, no relevant variant, or a variant of uncertain significance.
When should I consider getting a genetic test?
Genetic testing for the EMP2 gene may be worth considering when someone has an early-onset kidney condition with heavy protein loss in the urine and swelling, especially if it runs in the family or treatment is not helping as expected. An EMP2 result can help explain the cause and support family testing.
A genetic result is only one part of your health story
A genetic finding can provide useful information, but how much it explains varies with the condition and the kind of variant involved. Lifestyle, environment, age, and medical history, among other factors, influence how the body functions over time. For some conditions, especially those shaped by many genes, genetic information offers context rather than certainty and makes the most sense when considered alongside other parts of care. In other situations, a genetic result can give a clear answer. In areas like medication response, it can also help frame individual experiences.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how a person responds to medicines. Small differences in DNA can change how the body absorbs, breaks down, or responds to a drug, so the same treatment may work better for one person than for another. This is common and can influence how much benefit someone gets from a medicine or how sensitive they are to side effects.
What is Pharmacogenetics?
Pharmacogenetics examines how genetic differences shape the way people respond to medications. It focuses on links between genes and drugs to help explain why the same treatment can affect people differently from one person to another. For many medicines, genes influence how strongly a drug works and how the body handles it. This information can support more informed and individualized treatment decisions. More detail on this topic is available in the LearnHub.
Drugs influenced by the EMP2 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding how medicines are chosen or used, so any concerns about side effects, new symptoms, or treatment changes are best discussed with your doctor.