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5 Things To Know About Multiple Myeloma Maintenance Therapy

Posted on December 13, 2022
Medically reviewed by
Todd Gersten, M.D.
Article written by
Joan Grossman

  • Maintenance therapy for multiple myeloma consists of ongoing treatment that starts after a stem cell transplant.
  • New developments in maintenance therapy are raising remission and overall survival rates in people with multiple myeloma.
  • Maintenance treatment has been shown to significantly delay relapse, so people with myeloma may be advised to stay on their therapy for years.

Maintenance therapy after stem cell transplant — also known as SCT or bone marrow transplant — has become the standard of care for people with multiple myeloma. In recent years, maintenance therapy given after stem cell transplant has helped improve overall survival rates and considerably delayed recurrence of multiple myeloma. Knowing some important points about long-term treatment can help you better understand — and stick with — your maintenance therapy.

Despite advances in treatment options, multiple myeloma remains an incurable disease for most people. In most cases, multiple myeloma relapses (returns) after treatment. Myeloma may also be refractory, meaning the cancer resists treatment. Nonetheless, new treatment regimens, including maintenance therapy, are keeping people with multiple myeloma in remission longer.

By learning more about myeloma maintenance therapy, you can better discuss treatment options with your oncologist.

1. Maintenance Therapy Helps Maintain Remission

Lenalidomide (Revlimid), an immunomodulatory drug, is the current standard of care used in maintenance for myeloma. Studies have shown that this medication can significantly improve progression-free survival (the time until a treated disease gets worse). Maintenance therapy begins after induction therapy (the first treatment) and consolidation therapy (the next treatment) of high-dose chemotherapy with stem cell transplant.

Maintenance therapy aims to prolong remission, or stop disease progression, as long as possible. Another goal is to support quality of life by minimizing toxicity and the risk of side effects. Maintenance therapy with lenalidomide has been shown to sustain remission after stem cell transplant for 57 months, on average, compared with 30 months without maintenance treatment. In fact, the five-year survival rate for people with multiple myeloma has doubled during the past 30 years, largely due to breakthrough developments in maintenance therapy using novel drugs (innovative drugs that often serve an unmet medical need).

2. Drugs Used in Myeloma Maintenance Therapy Can Vary

Revlimid is currently the only single drug approved by the U.S. Food and Drug Administration (FDA) for myeloma maintenance therapy. However, a doctor may recommend other drugs and drug combinations for maintenance therapy if a person’s myeloma has relapsed or is considered very likely to do so. Other medications may be available through clinical trials or off-label (not officially approved) use, depending on the myeloma cells’ particular characteristics.

For instance, Mayo Clinic recommendations include using the drug bortezomib (Velcade), a proteasome inhibitor, for maintenance therapy in people with certain high-risk genetic abnormalities. Another proteasome inhibitor, ixazomib (Ninlaro), has been used for high-risk myeloma maintenance therapy when there is treatment resistance to bortezomib.

Teclistamab (Tecvayli) was recently approved to treat people with multiple myeloma who have previously received four or more lines of therapy. Teclistamab is the first medication of its class — bispecific T-cell engagers — to be indicated for myeloma. The FDA granted teclistamab accelerated approval due to its performance in clinical studies.

Daratumumab (Darzalex), an antibody (immune protein) or biologic drug, is sometimes used for maintenance therapy in cases of relapse after stem cell transplant.

Dexamethasone and prednisone, which are corticosteroids, are often combined with other maintenance therapies. Corticosteroids have anti-inflammatory properties and can lower immune system response.

Other immunomodulatory medications such as thalidomide (Thalomid), which has been used in maintenance therapy for myeloma, are now considered less advantageous because of toxicity and the risk of peripheral neuropathy (damage to nerves outside the brain and spinal cord).

Numerous other drugs are in clinical trials for myeloma maintenance therapy. You can ask your health care providers if any of these studies to investigate potential treatments may be appropriate for you.

3. You May Stay on Maintenance Therapy Indefinitely

Maintenance regimens for myeloma have evolved over the past few years as researchers developed new insights along with new oncology therapies. Although there are no firm guidelines regarding duration, newer protocols (treatment plans in studies) suggest that longer maintenance therapy may have significant benefits.

One goal of maintenance therapy is to eliminate minimal residual disease (MRD) — cancer cells that can linger after stem cell transplant. Achieving negative MRD (no evidence of cancer cells remaining) is not always possible. However, in one study, lenalidomide maintenance led to negative MRD in 30 percent of participants after 30 months of treatment. The study indicated that the response to lenalidomide deepens — meaning the drug becomes more effective — over time. This has led to the recommendation that people stay on maintenance therapy indefinitely, until they have negative MRD, as long as they tolerate the drug.

4. Sticking to Your Maintenance Therapy Is Vital

People with multiple myeloma are living longer than ever, but to get the best results, you need to stick to your maintenance therapy. According to an article published in the Journal of Oncology Navigation and Survivorship, some 30 percent of people with multiple myeloma don’t adhere to their maintenance plan, which increases the risk of recurrence.

For the best outcomes, you must follow your plan exactly. Maintenance therapy drugs are sometimes taken orally at home and require adhering to a strict schedule and proper dosage. Situations that can get in the way of adherence include financial burdens, difficulty communicating with health care providers, and lack of social support. In addition, living with comorbidities (coexisting conditions) that require other treatment may cause confusion over medication schedules.

Some people keep a calendar to help stay on track with their maintenance schedule and use a pillbox to organize doses by each day of the week. If you need help keeping up with maintenance therapy, talk to your nursing team or nurse navigator. You may be eligible for financial assistance to help with the cost of treatment.

5. Your Oncologist Will Discuss Side Effects With You

Although all medications have a risk of side effects, maintenance therapy for multiple myeloma has evolved, moving away from drugs that are more difficult to tolerate because of harsh side effects.

Lenalidomide is considered a well-tolerated drug, which is one reason it has become a standard of care for maintenance therapy. Side effects include an increased risk of changes in blood counts and a higher risk of blood clots. Side effects for bortezomib include lowered blood counts, diarrhea, and fatigue.

During follow-up visits, your doctor will monitor you for side effects, and you should tell your health care team if you’ve experienced any unwanted reactions. Be sure to discuss potential side effects with your doctor when planning your maintenance therapy.

Talk With Others Who Understand

MyMyelomaTeam is the social network for people with multiple myeloma and their loved ones. On MyMyelomaTeam, more than 17,000 members come together to ask questions, give advice, and share their stories with others who understand life with myeloma.

Are you on maintenance therapy for myeloma? Do you still have questions about maintenance therapy? Share your experience in the comments below, or start a conversation by posting on your Activities page.

Posted on December 13, 2022
All updates must be accompanied by text or a picture.
Todd Gersten, M.D. is a hematologist-oncologist at the Florida Cancer Specialists & Research Institute in Wellington, Florida. Review provided by VeriMed Healthcare Network. Learn more about him here.
Joan Grossman is a freelance writer, filmmaker, and consultant based in Brooklyn, NY. Learn more about her here.

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