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Understanding Waldenstrom's Macroglobulinemia: Symptoms, Diagnosis, and Treatment Options

Jerome Albert Ecker | MD

Medically reviewed by Jerome Albert Ecker | MD, Assistant Professor of Medicine, Duke University - Durham, NC on November 20th, 2023.

Key Takeaways

  • This lymphoplasmacytic lymphoma occurs in fewer than 3 per 1 million people annually, with a median age of diagnosis at 73 years and men affected twice as often as women.

  • The MYD88 L265P mutation is present in 90-95% of cases and helps distinguish it from other B-cell cancers, while CXCR4 mutations occur in 30-40% and predict treatment resistance.

  • Excess IgM protein causes hyperviscosity syndrome in 15-20% of patients, leading to bleeding, vision problems, and neurological symptoms when blood becomes too thick.

  • Rituximab-based combinations like BR (bendamustine-rituximab) achieve response rates of 90-95%, while BTK inhibitors like ibrutinib work particularly well in MYD88-mutated cases.

  • "Watch and wait" is appropriate for asymptomatic patients since median survival exceeds 12 years, but treatment becomes necessary when hemoglobin drops below 10 g/dL or symptoms appear.

Waldenstrom's macroglobulinemia, also known as lymphoplasmacytic lymphoma (LPL), is a rare type of blood cancer that usually progresses slowly. It is a form of non-Hodgkin's lymphoma, which starts in white blood cells called lymphocytes, a part of your body's immune system.

What Causes Waldenstrom's Macroglobulinemia?

Experts believe that changes in your DNA may lead to the development of Waldenstrom's macroglobulinemia. These changes often occur in genes called MYD88 and CXCR4, which help cells communicate with each other and stay alive. The exact cause of these DNA changes is still being studied, but they are not inherited from parents and usually happen later in life.

Certain factors may increase your risk of developing Waldenstrom's macroglobulinemia, including:

  • Being 50 years or older

  • Being male

  • Being white

  • Having a condition called MGUS (monoclonal gammopathy of undetermined significance)

  • Having a relative with a disease that affects their white blood cells

Symptoms of Waldenstrom's Macroglobulinemia

Some people with Waldenstrom's macroglobulinemia may not experience any symptoms initially. However, as the cancer cells spread in the bone marrow, you may develop various health issues, such as:

  • Fatigue due to anemia (low red blood cell count)

  • Frequent infections due to low white blood cell count

  • Easy bleeding or bruising due to low platelet count

  • Swelling in organs due to the accumulation of cancer cells

Other symptoms may include:

  • Headaches

  • Night sweats

  • Lack of appetite and unintended weight loss

  • Fevers

  • Swollen belly or lymph nodes

  • Confusion, dizziness, and clumsiness

  • Shortness of breath

  • Changes in vision, such as blurriness

  • Numbness or tingling in hands or feet

Diagnosing Waldenstrom's Macroglobulinemia

To diagnose Waldenstrom's macroglobulinemia, your doctor will start with a physical exam and ask about your medical history. They may also recommend several tests, including:

  • Blood tests to check for low levels of healthy blood cells, high levels of immunoglobulin M proteins, and organ function

  • Bone marrow aspiration and biopsy to confirm the presence of cancer cells and test for specific markers

  • Imaging tests, such as X-rays, CT scans, and PET scans, to determine if the cancer has spread

Understanding Waldenstrom's Macroglobulinemia: Symptoms, Diagnosis, and Treatment Options

Treatment Options for Waldenstrom's Macroglobulinemia

Treatment for Waldenstrom's macroglobulinemia depends on the presence of symptoms and the extent of cancer spread. If you don't have symptoms, your doctor may recommend a "watch-and-wait" approach, which involves close monitoring of your health through regular blood tests.

If you have symptoms, your doctor may suggest one or a combination of the following treatments:

  • Chemotherapy: Drugs that use powerful chemicals to kill cancer cells

  • Biological therapy: Medicines that help your immune system fight cancer cells or man-made versions of substances produced by your immune system

  • Targeted therapy: Drugs that block specific proteins or enzymes that help cancer cells grow

  • Plasma exchange: A procedure that filters your blood to remove excess immunoglobulin M and replace it with healthy plasma

  • Stem cell transplant: A treatment that uses high doses of chemotherapy to kill cancerous bone marrow and replaces it with healthy stem cells

  • Clinical trials: Research studies that allow you to try experimental treatments not yet approved by the FDA

During treatment, you may experience side effects such as nausea, temporary hair loss, diarrhea, and fatigue. Your doctor can help you manage these side effects with appropriate medications and advice.

Finding Support and Resources

Living with Waldenstrom's macroglobulinemia can be challenging, but you don't have to face it alone. Consider joining a support group where you can connect with others who understand your experiences. These groups can meet in person, on the telephone, or online.

To find a local support group or additional resources, consult your doctor, social worker, or visit the websites of organizations such as:

Remember, with early detection and appropriate treatment, many people with Waldenstrom's macroglobulinemia can manage their condition effectively and maintain a good quality of life.

The Bottom Line

This rare blood cancer often requires no immediate treatment in early stages, but genetic testing for MYD88 and CXCR4 mutations helps guide therapy selection when symptoms develop. Regular monitoring of blood counts and protein levels is essential since hyperviscosity can cause serious complications. If you're experiencing unexplained fatigue, vision changes, or bleeding symptoms, Doctronic can help connect you with appropriate testing and specialist care.

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