- How is melanoma skin cancer treated?
- Surgery for melanoma skin cancer
- Chemotherapy for melanoma skin cancer
- Immunotherapy for melanoma skin cancer
- Targeted therapy for melanoma skin cancer
- Radiation therapy for melanoma skin cancer
- Clinical trials for melanoma skin cancer
- Complementary and alternative therapies for melanoma skin cancer
- Treatment of melanoma skin cancer by stage
- More melanoma skin cancer treatment information
Immunotherapy for melanoma skin cancer
Immunotherapy stimulates a patient’s own immune system to recognize and destroy cancer cells more effectively. Several types of immunotherapy can be used to treat patients with advanced melanoma.
Ipilimumab for advanced melanoma
Ipilimumab (Yervoy) is a monoclonal antibody, a man-made version of an immune system protein. It targets CTLA-4, a protein that normally helps keep immune system cells called T cells in check. By blocking the action of CTLA-4, ipilimumab boosts the immune response against melanoma cells in the body.
This drug is given as an intravenous (IV) infusion, usually once every 3 weeks for 4 treatments. In patients with melanomas that can’t be removed by surgery or that have spread to other parts of the body, it has been shown to help people live an average of several months longer, although it does not cure the melanoma. Doctors are now studying its use for earlier-stage melanomas as well.
This drug works by basically removing the brakes on the body’s immune system. This can be helpful against cancer cells, but it can also lead to serious side effects. In some cases the immune system starts to attack other parts of the body, which can cause serious problems in the intestines, liver, hormone-making glands, nerves, skin, eyes, or other organs. In some people these side effects have been fatal.
These immune-related side effects most often occur during treatment, but some have been reported up to a few months after treatment has finished. It is very important to report any new side effects to your health care team promptly. If serious side effects do occur, treatment may need to be stopped and you may get high doses of corticosteroids to suppress your immune system.
Cytokines for advanced melanoma
Cytokines are proteins in the body that boost the immune system in a general way. Man-made versions of cytokines, such as interferon-alpha and interleukin-2 (IL-2), are sometimes used in patients with melanoma. They are given as intravenous (IV) infusions, at least at first. Some patients or caregivers may be able to learn how to give injections under the skin at home. Both drugs can help shrink advanced (stage III and IV) melanomas in about 10% to 20% of patients when used alone. These drugs may also be given along with chemotherapy drugs (known as biochemotherapy) for stage IV melanoma.
Side effects of cytokine therapy may include flu-like symptoms such as fever, chills, aches, severe tiredness, drowsiness, and low blood cell counts. Interleukin-2, particularly in high doses, can cause fluid to build up in the body so that the person swells up and can feel quite sick. Because of this and other possible serious side effects, high-dose IL-2 is given only in centers that have experience with this type of treatment.
Interferon-alpha as adjuvant therapy
Patients with thicker melanomas often have cancer cells that have spread to other parts of the body. Even if all of the cancer seems to have been removed by surgery, some of these cells may remain. Interferon-alpha can be used as an added (adjuvant) therapy after surgery to try to prevent these cells from spreading and growing. This may delay the recurrence of melanoma, but it is not yet clear if it improves survival.
High doses must be used for the interferon to be effective. But many patients cannot tolerate the side effects of high-dose therapy. These can include fever, chills, aches, depression, severe tiredness, and effects on the heart and liver. Patients getting this drug need to be closely watched by a doctor who is experienced with this treatment.
When deciding whether to use adjuvant therapy, patients and their doctors should take into account the potential benefits and side effects of this treatment.
Bacille Calmette-Guerin (BCG) vaccine
BCG is a germ related to the one that causes tuberculosis. BCG does not cause serious disease in humans, but it does activate the immune system. The BCG vaccine works like a cytokine by enhancing the entire immune system. It is not directed specifically at melanoma cells. It is sometimes used to help treat stage III melanomas by injecting it directly into tumors.
Imiquimod (Zyclara) is a drug that, when applied as a cream, stimulates a local immune response against skin cancer cells. For very early (stage 0) melanomas in sensitive areas on the face, some doctors may use imiquimod if surgery might be disfiguring. It can also be used for some melanomas that have spread along the skin. Still, not all doctors agree it should be used for melanoma.
The cream is applied anywhere from once a day to 2 times a week for around 3 months. Some people may have serious skin reactions to this drug. Imiquimod is not used for more advanced melanomas.
Some newer types of immunotherapy have shown promise in treating melanoma in early studies. At this time they are available only through clinical trials (see “What’s new in research and treatment of melanoma skin cancer?”).
Last Medical Review: 09/20/2012
Last Revised: 01/17/2013