Treating cancer with chemotherapy
Chemotherapy can be an effective type of cancer treatment, but it may also cause many side effects. Increasingly, oncologists are turning to tumor biomarker tests to determine which patients are more or less likely to benefit from chemotherapy and to select which patients may be better candidates for less toxic or more effective therapies.
Despite the side effects, chemotherapy plays an important role in treating certain patients for most types of cancers. The use of chemotherapy for treatment and the choice of agent chosen vary by cancer type, stage and situation. Visit the sections for each of the cancers listed below for more information on treatment selection.
- Breast cancer
- Fallopian tube, ovarian and primary peritoneal
- Pancreatic cancer
Some hereditary cancers may respond better to certain types of treatment. For example, people with mutations in genes that repair DNA damage, including BRCA1, BRCA2, PALB2, ATM, CHEK2, BRIP1 and other mutations may benefit from platinum chemotherapy. Cancer cells that have one of these mutations already have problems repairing DNA, and platinum chemotherapy can make that worse.
Goals of chemotherapy
- Neoadjuvant chemotherapy is given to try to shrink a tumor before surgery. If a tumor is large, this may help the surgeon remove the entire tumor with wide margins of healthy tissue. It may also allow the oncologist to learn how well the cancer responds to a particular chemotherapy. If the cancer doesn't shrink, the oncologist may recommend a different type of treatment after the tumor is removed.
- Adjuvant chemotherapy is given to patients with early-stage disease after surgery to remove the tumor, when there is no longer evidence of disease. Adjuvant chemotherapy is used to destroy any undetected cancer cells that may still remain somewhere in the body after the cancer has been removed.
- Chemotherapy may be used to treat people with advanced cancer to shrink tumors, reduce symptoms and decrease further spread of the cancer.