Hyper-IgE Syndrome (Job Syndrome)
What is Hyper-IgE Syndrome (Job Syndrome)?
Hyper-IgE Syndrome, also known as Job Syndrome, is a rare immune disorder that affects how your body fights infections. People with this condition have extremely high levels of an antibody called IgE, usually above 2,000 IU per mL. IgE is a protein your immune system makes, but too much of it causes problems instead of protection.
This condition often starts in childhood with recurrent skin infections and lung infections that keep coming back. The immune system doesn't work properly, making it hard to heal wounds and fight off certain bacteria and fungi. Many people with Hyper-IgE Syndrome develop distinctive facial features and bone problems as they grow.
The most common form happens when a gene called STAT3 doesn't work correctly. This genetic change disrupts how your immune cells communicate and develop. While the condition is rare, early detection through blood testing can help people manage symptoms and prevent serious complications.
Symptoms
- Recurrent skin abscesses that keep returning in the same areas
- Severe eczema that doesn't respond well to standard treatments
- Lung infections that lead to permanent air pockets called pneumatoceles
- Candida infections in the mouth, nails, and skin
- Broken bones from minor injuries due to weakened bone structure
- Distinctive facial features including a broader nose and prominent forehead
- Delayed loss of baby teeth, sometimes keeping them into adulthood
- Joint flexibility beyond the normal range
- Scoliosis or curved spine that develops over time
- High fever during infections
Some people have mild symptoms that go unnoticed for years. Others experience severe infections starting in infancy that require medical attention.
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Causes and risk factors
Hyper-IgE Syndrome is caused by genetic mutations, most commonly in the STAT3 gene. This gene controls how immune cells grow and function. When STAT3 doesn't work properly, your body produces too much IgE and eosinophils, a type of white blood cell. The mutation also affects how neutrophils move through your body to fight infections. This explains why people with the condition get abscesses in the same spots repeatedly.
Most cases happen spontaneously, meaning parents don't carry the mutation. However, the autosomal dominant form can be passed from parent to child with a 50 percent chance. A less common form involves mutations in the DOCK8 gene, which causes different symptoms. Risk factors include having a parent with the condition or a family history of unusual immune problems.
How it's diagnosed
Doctors diagnose Hyper-IgE Syndrome by looking at your medical history, physical features, and blood test results. Blood tests show extremely elevated IgE levels, typically above 2,000 IU per mL. Eosinophil counts are also high, indicating immune system dysfunction. These markers help distinguish Hyper-IgE Syndrome from other conditions that cause frequent infections.
Rite Aid offers blood testing that measures eosinophils through our flagship panel at Quest Diagnostics locations nationwide. Genetic testing confirms the diagnosis by identifying STAT3 or DOCK8 mutations. Imaging studies of the lungs may reveal pneumatoceles or scarring from past infections. A scoring system helps doctors assess the likelihood of Hyper-IgE Syndrome based on clinical features and lab results.
Treatment options
- Preventive antibiotics taken daily to reduce skin and lung infections
- Antifungal medications to prevent and treat Candida infections
- Immunoglobulin replacement therapy to support immune function
- Aggressive treatment of infections when they occur with targeted antibiotics
- Good skin care with moisturizers to manage eczema and prevent breaks in skin
- Regular monitoring for pneumatoceles and lung complications
- Dental care to manage delayed tooth loss and prevent oral infections
- Bone health monitoring and treatment for osteoporosis
- Avoiding activities that could cause bone fractures
- Proper wound care to help abscesses heal completely
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- Simple blood draw at your nearest lab
- Results in days, not weeks
- Share results with your doctor
Frequently asked questions
Life expectancy varies depending on how well infections are managed and prevented. Many people with good medical care live into adulthood, though lung complications remain a concern. Early diagnosis and consistent preventive treatment significantly improve outcomes. Regular monitoring by immunology specialists helps catch problems before they become serious.
There is currently no cure for Hyper-IgE Syndrome because it involves a genetic mutation. Treatment focuses on preventing infections and managing symptoms throughout life. Some patients have received stem cell transplants, which can reset the immune system in certain cases. Research continues into gene therapy and other approaches that might address the root cause.
Both conditions involve elevated IgE, but Hyper-IgE Syndrome causes much higher levels and serious immune dysfunction. Regular allergies cause sneezing, itching, and hives, while Hyper-IgE Syndrome leads to deep skin abscesses and lung infections. People with this condition have structural problems in bones and teeth that don't occur with allergies. The eosinophil elevation is also much more pronounced in Hyper-IgE Syndrome.
The immune system cannot properly fight Staphylococcus aureus bacteria, which causes most skin and lung infections. Fungal infections, especially Candida and Aspergillus, are common because of weakened antifungal defenses. Even minor skin injuries can become infected because neutrophils don't move effectively to the site. The high IgE and eosinophil levels indicate immune dysfunction but don't directly prevent infections.
Most patients need blood tests every 3 to 6 months to monitor eosinophil levels and overall immune function. More frequent testing may be needed during active infections or when changing medications. Regular monitoring helps doctors adjust preventive treatments before serious complications develop. Your immunologist will create a testing schedule based on your specific symptoms and infection history.
While lifestyle changes cannot fix the genetic cause, they help reduce infection risk. Good skin hygiene and moisturizing prevent breaks in the skin barrier where bacteria enter. Avoiding smoking and lung irritants protects damaged lungs from further harm. A nutrient-rich diet supports overall immune health, though it cannot normalize IgE levels. Stress management may help because stress can worsen eczema and skin problems.
No, Hyper-IgE Syndrome is not contagious because it results from a genetic mutation present from birth. You cannot catch it from someone who has the condition. However, people with the syndrome may carry bacteria like Staph aureus that could spread to others. The infections themselves can sometimes be contagious, but the underlying immune disorder is not.
Pneumatoceles are air-filled cysts that form in the lungs after severe infections. They happen because the weakened immune system allows infections to damage lung tissue deeply. The damaged areas fill with air and form permanent pockets that never fully heal. These cysts increase the risk of future lung infections and can sometimes rupture, causing breathing problems.
Pregnancy is possible but requires careful planning and monitoring with high-risk specialists. The immune changes during pregnancy can affect infection risk and medication needs. Some medications used to prevent infections may need adjustment during pregnancy. There is a 50 percent chance of passing the condition to the child if a parent has the autosomal dominant form.
The STAT3 mutation affects not just immune cells but also bone and tissue development. This causes distinctive features like a broader nose, prominent forehead, and facial asymmetry. These features often become more noticeable during adolescence as the face develops. The same process affects bone density and joint flexibility throughout the body.