Multiple Myeloma Overview

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Treating Multiple Myeloma TOPICS

Chemotherapy and other drugs for multiple myeloma

Chemotherapy (chemo) is the use of drugs to kill or control the cancer cells. These drugs are either taken by mouth as a pill or given into a vein or a muscle. The drugs enter the blood and reach throughout the body. This treatment is useful for cancers such as multiple myeloma that often spreads widely. To learn more about chemo for multiple myeloma, please see the section “Chemotherapy” in our document Multiple Myeloma.

Chemo side effects

Chemo drugs kill cancer cells but also can damage normal cells. These side effects depend on the type and dose of drugs given and the length of time they are taken. Common side effects of chemo include:

  • Hair loss
  • Mouth sores
  • Loss of appetite
  • Nausea, and vomiting
  • Low blood counts

Chemo often leads to low blood counts, which can cause:

  • Greater chance of infection (low white blood cell counts)
  • Easy bruising or bleeding (low blood platelets)
  • Fatigue and anemia (low red blood cells).

Most side effects are temporary and go away after treatment is finished.

If you have side effects, your cancer care team can suggest steps to ease them. For instance, drugs can be given along with the chemo to prevent or reduce nausea and vomiting.

Some chemo drugs can also permanently damage certain organs such as the heart or kidneys. The risks of using these drugs are carefully balanced against their benefits. The doctor will watch these organs during treatment. If damage occurs, the drug that caused it is stopped and replaced with another.

Chemo drugs can be used alone or along with other drugs, like those listed below.

Other drugs used to treat multiple myeloma

Corticosteroids

These drugs are an important part of the treatment of multiple myeloma and can be used alone or combined with other drugs. They also help decrease the nausea and vomiting caused by chemo. These drugs have short term side effects like high blood sugar, increased appetite, and problems sleeping. They can also weaken the immune system while you are taking them. This leads to an increased risk of serious infections. If taken for a long time, corticosteroids can cause the bones to become weak.

The corticosteroids most often used in treating multiple myeloma are dexamethasone and prednisone.

Immunomodulating agents

There are 3 immunomodulating agents (drugs that affect a person’s immune system in unclear ways) used to treat multiple myeloma: thalidomide (Thalomid®), lenalidomide (Revlimid®), and pomalidomide (Pomalyst®). Thalidomide was the first of this type of drug. It was first used decades ago as a sedative and as a treatment for morning sickness in pregnant women. When it was found to cause birth defects, it was taken off the market. Later, it became available again as a treatment for multiple myeloma. With the success of thalidomide, other similar drugs were developed to treat multiple myeloma. Because thalidomide causes birth defects if taken during pregnancy and the others might also, these drugs are only available through a special program run by the drug company that makes them.

Side effects of these drugs can include low blood counts, painful nerve damage, and an increased risk of serious blood clots that start in the leg and can travel to the lungs. Each of these drugs can have its own side effects, so ask your doctor about what to expect.

Proteasome inhibitors

There are 2 proteosome inhibitors (drugs that stop certain proteins from breaking down other proteins that keep cell growth under control) available to treat multiple myeloma: bortezomib (Velcade®) and carfilzomib (Kyprolis®). Bortezomib was the first of these drugs. It seems to be helpful in treating patients with kidney problems from their myeloma.

Common side effects include nausea and vomiting, tiredness, diarrhea, low blood counts, and fever. Some other, more serious side effects can also occur. Bortezomib can also cause nerve damage that can lead to numbness, tingling, or even pain in the arms and legs. Also, some patients develop shingles (herpes zoster) while taking this drug. To help prevent this, your doctor may give you a medicine (like acyclovir) while you take this drug. Each of these drugs can have its own side effects, so ask your doctor about what to expect.

If you’d like more information on a drug used in your treatment or a specific drug mentioned in this section, see our Guide to Cancer Drugs , or call us with the names of the medicines you’re taking.

Drug treatment

The choice and dose of the drugs depend on many things, such as:

  • The stage of the cancer
  • The patient’s age
  • The health of the patient’s kidneys
  • Whether a stem cell transplant is planned (If a stem cell transplant is planned, most doctors avoid using drugs that can damage the bone marrow.)

Last Medical Review: 05/22/2014
Last Revised: 06/19/2014