Systemic therapy for chordoma
Understanding systemic therapy
The use of drugs that spread through the body to kill cancer cells. Also called chemotherapy or drug therapy. is the use of treatments that spread throughout the body to kill cancer cells wherever they are located. These treatments are prescribed by doctors called medical oncologists or neuro-oncologists. Systemic therapy includes different types of drugs and treatments including A type of systemic therapy that is designed to kill rapidly dividing cancer cells., targeted therapies, and immunotherapies. Since surgery and radiation are the recommended treatments for newly diagnosed chordoma, systemic therapy is usually only used to treat locally advanced or When tumors have spread to other parts of the body from the original tumor site. chordoma.
Targeted therapies are designed to target the changes and mutations found in cancer cells. Every patient’s tumor cells have unique changes in the DNA and RNA within the cells, which allow the cells to grow uncontrollably and spread. Targeted therapies work by acting against those changes in a way that can cause the cells to die. They are typically given orally but sometimes delivered Any fluids given inside a vein. These could be treatment, medications, blood, or contrast dye for MRI and CT scans.. These treatments can cause side effects including vomiting, diarrhea, liver problems, high blood pressure, mouth sores, and issues with hair, skin, and nails. There are medications that can help prevent or treat these side effects in many cases.
The immune system includes cells, tissues, and organs that help the body fight infection and disease. One reason tumors continuously grow and divide without being killed by the immune system is because tumor cells are very effective at being able to “hide” from the immune system. Immunotherapies are treatments that help your immune system find and kill tumor cells. Different types of immunotherapies use different components of the immune system to fight cancer.
|Checkpoint inhibitors help the immune system by “releasing the brakes” that keep immune cells from being able to find tumor cells. They work by interfering with proteins produced by tumor cells that allow them to avoid attack by the immune system.|
|Therapeutic vaccines use substances the immune system recognizes as foreign to the body, similar to a flu shot. The immune response to these substances helps stimulate response to tumor cells.|
|Adoptive cell transfer uses the patient’s own immune cells to fight the tumor cells. Immune cells are taken from the patient’s tumor and genetically modified to learn to attack the cancer cells. The genetically modified cells are allowed to grow in a lab over a few weeks. Once there are a large number of the tumor-fighting immune cells, they are injected back into the patient’s body intravenously.|
Immunotherapy will play an increasingly important role in cancer treatment in the future, and it is currently being studied in clinical trials for the treatment of chordoma.
In general, chemotherapy drugs work by targeting DNA and other structures in cancer cells. Chemotherapy drugs cannot tell the difference between cancer cells and healthy cells, however, which is why side effects often occur. These can include low blood counts, hair loss, nausea, fatigue, or damage to organs. If you are treated with chemotherapy, your oncologist will monitor you for these side effects. Chemotherapy treatments are most commonly given intravenously but can be given orally as well.
Conventional and One of the four histological types of chordoma, this term was more commonly used in the past when it was difficult to tell the difference between conventional chordoma and chondrosarcoma. Chondroid chordomas behave similarly to and are treated the same as conventional chordomas. chordomas are typically resistant to chemotherapy drugs. For this reason, chemotherapy is not routinely used to treat these types of chordoma. However, there is some published evidence that Cancer of bone and connective tissue such as cartilage, fat, muscle, and blood vessels. Chordoma is a type of sarcoma. chemotherapy regimens may be effective in treating the A histological subtype of chordoma that is more aggressive and usually grows faster than the conventional type. It is more common in children and young adults, and is often characterized by loss of the INI1 protein. and A histological subtype of chordoma that is more aggressive and usually grows faster than conventional chordomas. Dedifferentiated chordomas occur in only 5 percent of patients, can have loss of the INI1 gene, and are more common in pediatric patients. types of chordoma, which occur more often in pediatric and young adult patients and usually grow faster than the other types.1 2 3 4 These regimens include the drugs doxorubicin, ifosfamide, etoposide, vincristine, cyclophosphamide, and cisplatin. 1 2 3 4
Length of treatment
Typically, doctors will continue to treat patients with a therapy until the tumor grows significantly, which suggests the treatment is not working or has stopped working, or until there are side effects that make the treatment intolerable. How long a patient continues with a particular therapy varies based on the individual patient’s situation. If your doctors discontinue a therapy for one of these reasons, they will typically work with you to find another to try.
Possible side effects of systemic therapy
All systemic therapies have the risk of potential side effects, ranging from mild to severe. These include:
- Chemotherapy: low blood counts, hair loss, nausea, fatigue, and organ damage
- Targeted therapy: vomiting, diarrhea, liver problems, high blood pressure, mouth sores, and issues with hair, skin, and nails
- Immunotherapy: infection-like symptoms, allergic reactions, and auto-immune disorders (where the body attacks normal tissues like the liver, kidneys, lung, skin, pancreas, and other organs). Though serious side effects are less common, they can be extremely severe and life threatening when they do happen.
Any new side effects experienced while taking a systemic therapy, whether in a Research studies involving human subjects that are done to test whether a treatment is safe, and how well it will work to treat a specific disease. or The practice of prescribing drug treatments that are not approved by government agencies to treat a particular disease. Doctors are allowed to prescribe drugs off-label if they believe it is in the best interest of the patient., should be reported to your doctor immediately.
Considering systemic therapy for chordoma
Chordoma patients whose tumors have come back (recurrent disease) or spread to other parts of the body (When tumors have spread to other parts of the body from the original tumor site.) may consider systemic therapies when treatment with surgery and/or radiation treatment are not possible or not recommended. Systemic therapies may also be considered if the tumor is growing rapidly, or if it has been determined that the tumor is either the poorly differentiated or dedifferentiated type of chordoma.
Currently, no systemic therapies have been approved by government regulatory agencies such as the U.S. Food and Drug Administration (FDA) or the European Medicines Agency (EMA) for the treatment of chordoma. However, in some countries, doctors are allowed to prescribe treatments to chordoma patients that have been approved for other cancers. This is called “off-label” use of the treatment.
Cost of systemic therapy treatments
When doctors prescribe systemic therapies off-label, they are typically not paid for by insurance or by health systems. However, this varies widely, so it is important to check with your insurance provider or health system. On occasion, drug companies have programs that make their treatments available to patients at minimal or no cost. These programs are called “compassionate use” or “expanded access”. It may also be possible for chordoma patients to receive certain therapies by participating in clinical trials.
Personalized medicine – also called precision medicine or personalized oncology – uses information about a person’s genetics and other characteristics to prevent, diagnose, and treat disease. Personalized medicine in cancer treatment involves testing a patient’s tumor cells to learn more about the tumor’s genetic alterations. Doctors then use this information to decide which treatment is best for that particular patient. Personalized medicine is routinely used in certain, more common cancers such as breast and lung cancer and has shown promise in many others.
Genomic profiling tests
Genomic profiling provides information about the genetic makeup of cancer cells. To get this information, a small piece of tumor tissue, often taken from a recent surgery or A procedure that uses a needle to remove a small tissue sample from the tumor to be tested in order to make a diagnosis., is sent to a lab where the DNA – and sometimes RNA, depending on the test – of the cancer cells is analyzed in order to identify changes and alterations.
A report is generated that includes the results of the test. In some cases, an actionable target is found – in other words, the test finds a A change in the genetic information (DNA) in a cell. Mutations occur every day all over the body and are usually harmless. In some cases, the mutations allow the cells to hide from the immune system and grow out of control, forming tumors. in the patient’s tumor cells that can be targeted by a certain drug or immunotherapy. In other cases, no actionable mutations are found or the mutations found do not have accessible treatments – for example, the treatment is only available through a clinical trial but the patient is not eligible for the trial.
Some clinical trials offer genomic profiling as part of the trial and profiling tests are also available through some major medical centers. Several private companies also offer tumor profiling services. For U.S. patients, some insurance plans pay for the tests, and Medicaid and Medicare now cover them fully. The private companies may offer financial assistance programs to patients who are uninsured or cannot afford the cost of the testing. In some countries, the government health system may pay for profiling tests.
Testing chordoma tumors
Many chordoma patients considering systemic therapy options are offered or can request genomic profiling tests. A recent tumor sample is best for testing, but the tests can usually also be done on tissue stored after a previous surgery if a recent sample is not available.
For many cancers, including chordoma, there is no certainty that the results of tumor profiling tests will be able to help guide treatment decisions. Discussing the pros and cons of testing with your medical oncologist can help you make the best decision for your individual situation.
- What tests are available to me and which one will provide the most information? How will treatment recommendations be made if the tests do not provide actionable results?
- (If you are thinking about enrolling in a clinical trial) How much tumor tissue is available for testing? Will any tissue be required to determine my eligibility for the trial? Is there enough tissue for both genomic testing and clinical trial screening? Can the trial doctors use the results of the testing to determine my eligibility?
- Will the cost be fully covered by my insurance plan or health system? Is a payment plan available to help with out-of-pocket costs? Is it possible to learn about potential targets through less expensive tests like immunohistochemistry (IHC)?
To help you get the best care possible, we developed lists of questions with the input of chordoma patients and caregivers that can help you think about what you want to ask your doctors about systemic therapies and genomic profiling.
References and further information
The content on this page was developed by the Chordoma Foundation in consultation with members of our Medical Advisory Board. We would like to thank the members of our Medical Advisory Board for providing their expertise in contributing to the content and review of our educational materials.
The information provided herein is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your or your loved one’s physician about any questions you have regarding your or your loved one’s medical care. Never disregard professional medical advice or delay in seeking it because of something you have read on this Website.