Why is HLA-B27 High? Causes, Symptoms, and What to Do

HLA-B27 is a genetic marker that is associated with certain autoimmune diseases. When you have a high level of HLA-B27, it means that this particular protein is present in your body, which can be linked to conditions like ankylosing spondylitis and other inflammatory diseases. Understanding why HLA-B27 is high and what it means for your health can help you manage your symptoms and work with your healthcare provider to determine the best course of action.

What is HLA-B27?

HLA-B27 is a protein found on the surface of white blood cells. It is part of the human leukocyte antigen (HLA) system, which helps the immune system distinguish between the body's own proteins and those from foreign invaders, like viruses and bacteria. This marker is inherited, meaning it is passed down from parents to their children. While many people with HLA-B27 never develop any health issues, a high level of this marker is associated with an increased risk of certain autoimmune conditions.

Why does HLA-B27 matter?

HLA-B27 is significant because it is linked to a group of autoimmune diseases known as spondyloarthropathies. These conditions include ankylosing spondylitis, reactive arthritis, psoriatic arthritis, and inflammatory bowel disease-associated arthritis. Having HLA-B27 does not mean you will definitely develop these conditions, but it does increase your risk. Understanding your HLA-B27 status can help your healthcare provider assess your risk and monitor for any related symptoms.

Causes of high HLA-B27

HLA-B27 is a genetic marker, so its presence is determined by your DNA. You inherit this trait from your parents, and it is not something that can be changed. While having HLA-B27 is not a direct cause of disease, it is a risk factor for certain autoimmune diseases. The exact mechanisms by which HLA-B27 contributes to these conditions are not fully understood, but it is believed to involve a combination of genetic and environmental factors.

Symptoms associated with high HLA-B27

People with high HLA-B27 levels may experience symptoms related to the autoimmune conditions it is associated with. Common symptoms include chronic back pain, stiffness, and inflammation of the joints. In some cases, individuals may also experience eye inflammation, known as uveitis, or inflammation in other parts of the body. It is important to note that not everyone with HLA-B27 will experience symptoms, and the presence of this marker alone does not diagnose a disease.

What to do if you have high HLA-B27

If you have been tested and found to have high HLA-B27, it is important to discuss your results with your healthcare provider. They can help you understand what this means for your health and whether any additional testing or monitoring is necessary. If you experience symptoms such as chronic pain or inflammation, your doctor may refer you to a specialist, such as a rheumatologist, for further evaluation and management.

Frequently asked questions

What does it mean if I test positive for HLA-B27? Testing positive for HLA-B27 means you have this genetic marker, which is associated with a higher risk of certain autoimmune diseases. It does not mean you will definitely develop these conditions.

Can HLA-B27 be treated or cured? HLA-B27 itself cannot be treated or cured, as it is a genetic trait. However, the symptoms of associated conditions can be managed with medication and lifestyle changes.

Is HLA-B27 common? HLA-B27 is relatively common, with varying prevalence among different populations. In some groups, up to 8% of people may have this marker.

How is HLA-B27 tested? HLA-B27 is tested through a blood test that looks for the presence of the HLA-B27 protein on white blood cells.

Does having HLA-B27 mean I have an autoimmune disease? No, having HLA-B27 does not mean you have an autoimmune disease, but it does increase your risk for certain conditions.

When to see a doctor

You should see a doctor if you have been diagnosed with high HLA-B27 and experience symptoms such as persistent back pain, joint stiffness, or eye inflammation. Early diagnosis and management of any associated conditions can help improve your quality of life. If you have concerns about your HLA-B27 status or related symptoms, discussing them with a healthcare provider is a good step.

Please remember that this information is not a substitute for professional medical advice. Always consult with your healthcare provider for any health-related decisions.