How is Multiple Myeloma graded and what does the grade mean

How Multiple Myeloma is Graded and What It Means

Multiple myeloma isn't graded the same way some other cancers are (like breast cancer with grades 1-3). Instead, doctors use a different system called risk stratification to understand how aggressive your myeloma is and how it might respond to treatment.

The Risk Stratification System

According to the NCCN Guidelines for Patients: Multiple Myeloma, myeloma is classified into risk categories based on genetic abnormalities (chromosomal changes) found in your myeloma cells. These changes are detected through a test called FISH (fluorescence in situ hybridization), which looks for specific mutations in your cancer cells' chromosomes.

Why Genetic Changes Matter

Think of chromosomes as instruction manuals for cells. When myeloma cells have certain mutations (changes), it tells doctors important information:

• How aggressive the cancer might be
• How quickly it might come back after treatment
• Which treatments are most likely to work

The Risk Categories

According to NCCN Guidelines, myeloma is classified as:

Standard Risk

• Myeloma cells have normal or favorable genetic changes
• Generally responds better to treatment
• Longer time before the cancer comes back (longer remission)

High Risk

Myeloma cells have one of these abnormal changes:

• Deletion of chromosome 17 (loss of part or all of it)
• Translocation between chromosomes 4 and 14 (parts swap places)
• Translocation between chromosomes 14 and 16
• Translocation between chromosomes 14 and 20
• Extra copies or deletion of part of chromosome 1 (called 1q21 amplification)
• Translocation within the MYC gene
• Mutation of the TP53 gene

Very High Risk

Myeloma cells have 2 or more of the high-risk abnormal changes listed above

What These Grades Mean for Your Care

Higher risk doesn't mean worse outcomes — it means your care team will likely:

• Use more aggressive treatment combinations
• Monitor you more closely
• Consider a hematopoietic cell transplant (blood stem cell transplant) earlier in your treatment
• Plan for maintenance therapy (ongoing lower-dose treatment) after initial therapy

According to NCCN Guidelines, the choice of primary treatment depends partly on your risk category and whether a stem cell transplant might be part of your plan.

Other Important Factors

Your myeloma grade also considers:

• M protein levels (the abnormal antibodies your myeloma cells produce)
• Kidney function (myeloma can damage kidneys)
• Calcium levels in your blood
• Hemoglobin levels (red blood cell count)
• Bone damage visible on imaging

Key Takeaway

Your specific risk category helps your oncology team personalize your treatment plan. Even if you have high-risk features, modern treatments are giving people with myeloma more hope and longer survival than ever before. The NCCN Guidelines emphasize that "new treatments are giving people more hope and more years to live."

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Questions to Ask Your Doctor

1. What is my specific risk category, and what genetic changes were found in my myeloma cells?
2. How does my risk category affect my treatment recommendations?
3. Will I be a candidate for a stem cell transplant based on my risk category?
4. How often will my myeloma be re-tested to see if the genetic profile changes?
5. What does my specific risk category mean for my long-term outlook?

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This information is for educational purposes only. Always consult your healthcare team for personalized medical advice and decisions.