user: What are the treatments for Ewing Sarcoma ?

assistant: Key Points
                    - There are different types of treatment for children with Ewing sarcoma.    - Children with Ewing sarcoma should have their treatment planned by a team of health care providers who are experts in treating cancer in children.    - Treatment for Ewing sarcoma may cause side effects.    - Five types of standard treatment are used:         - Chemotherapy     - Radiation therapy     - Surgery     - Targeted therapy     - High-dose chemotherapy with stem cell rescue        - New types of treatment are being tested in clinical trials.          - Chimeric antigen receptor (CAR) T-cell therapy        - Patients may want to think about taking part in a clinical trial.    - Patients can enter clinical trials before, during, or after starting their cancer treatment.    - Follow-up tests may be needed.
                
                
                    There are different types of treatment for children with Ewing sarcoma.
                    Different types of treatments are available for children with Ewing sarcoma. Some treatments are standard (the currently used treatment), and some are being tested in clinical trials. A treatment clinical trial is a research study meant to help improve current treatments or obtain information on new treatments for patients with cancer. When clinical trials show that a new treatment is better than the standard treatment, the new treatment may become the standard treatment.   Because cancer in children is rare, taking part in a clinical trial should be considered. Some clinical trials are open only to patients who have not started treatment.
                
                
                    Children with Ewing sarcoma should have their treatment planned by a team of health care providers who are experts in treating cancer in children.
                    Treatment will be overseen by a pediatric oncologist, a doctor who specializes in treating children with cancer. The pediatric oncologist works with other health care providers who are experts in treating children with Ewing sarcoma and who specialize in certain areas of medicine. These may include the following specialists:         -  Pediatrician.    -  Surgical oncologist or orthopedic oncologist.    -  Radiation oncologist.    -  Pediatric nurse specialist.    -  Social worker.    -  Rehabilitation specialist.    -  Psychologist.
                
                
                    Treatment for Ewing sarcoma may cause side effects.
                    For information about side effects that begin during treatment for cancer, see our Side Effects page.    Side effects from cancer treatment that begin after treatment and continue for months or years are called late effects. Late effects of cancer treatment may include the following:          - Physical problems.    - Changes in mood, feelings, thinking, learning, or memory.    -  Second cancers (new types of cancer). Patients treated for Ewing sarcoma have an increased risk of acute myeloid leukemia and myelodysplastic syndrome. There is also an increased risk of sarcoma in the area treated with radiation therapy.        Some late effects may be treated or controlled. It is important to talk with your child's doctors about the effects cancer treatment can have on your child. (See the PDQ summary on Late Effects of Treatment for Childhood Cancer for more information.)
                
                
                    Five types of standard treatment are used:
                    Chemotherapy     Chemotherapy is a cancer treatment that uses drugs to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. When chemotherapy is taken by mouth or injected into a vein or muscle, the drugs enter the bloodstream and can reach cancer cells throughout the body (systemic chemotherapy). When chemotherapy is placed directly into the cerebrospinal fluid, an organ, or a body cavity such as the abdomen, the drugs mainly affect cancer cells in those areas (regional chemotherapy). Combination chemotherapy is treatment using more than one anticancer drug.    Systemic chemotherapy is part of the treatment for all patients with Ewing tumors. It is often the first treatment given and lasts for about 6 to 12 months. Chemotherapy is often given to shrink the tumor before surgery or radiation therapy and to kill any tumor cells that may have spread to other parts of the body.    See Drugs Approved for Soft Tissue Sarcoma for more information.       Radiation therapy    Radiation therapy is a cancer treatment that uses high-energy x-rays or other types of radiation to kill cancer cells or keep them from growing. There are two types of radiation therapy:            -  External radiation therapy uses a machine outside the body to send radiation toward the cancer.     -  Internal radiation therapy uses a radioactive substance sealed in needles, seeds, wires, or catheters that are placed directly into or near the cancer.           External radiation therapy is used to treat Ewing sarcoma.    Radiation therapy is used when the tumor cannot be removed by surgery or when surgery to remove the tumor will affect important body functions or the way the child will look. It may be used to make the tumor smaller and decrease the amount of tissue that needs to be removed during surgery. It may also be used to treat any tumor that remains after surgery and tumors that have spread to other parts of the body.       Surgery    Surgery is usually done to remove cancer that is left after chemotherapy or radiation therapy. When possible, the whole tumor is removed by surgery. Tissue and bone that are removed may be replaced with a graft, which uses tissue and bone taken from another part of the patient's body or a donor. Sometimes an implant, such as artificial bone, is used.    Even if the doctor removes all of the cancer that can be seen at the time of the operation, chemotherapy or radiation therapy may be given after surgery to kill any cancer cells that are left. Chemotherapy or radiation therapy given after surgery to lower the risk that the cancer will come back is called adjuvant therapy.        Targeted therapy     Targeted therapy is a type of treatment that uses drugs or other substances to identify and attack specific cancer cells without harming normal cells.     Monoclonal antibody therapy is a type of targeted therapy used in the treatment of recurrent Ewing sarcoma. It is being studied for the treatment of metastatic Ewing sarcoma. Monoclonal antibodies are made in the laboratory from a single type of immune system cell. These antibodies can identify substances on cancer cells or normal substances that may help cancer cells grow. The antibodies attach to the substances and kill the cancer cells, block their growth, or keep them from spreading. Monoclonal antibodies are given by infusion. They may be used alone or to carry drugs, toxins, or radioactive material directly to cancer cells.     New types of targeted therapy are being studied.            -  Kinase inhibitor therapy is another type of targeted therapy. Kinase inhibitors are drugs that block a protein needed for cancer cells to divide. They are being studied in the treatment of recurrent Ewing sarcoma.      -  PARP inhibitor therapy is another type of targeted therapy. PARP inhibitors are drugs that block DNA repair and may cause cancer cells to die. They are being studied in the treatment of recurrent Ewing sarcoma.              High-dose chemotherapy with stem cell rescue     High-dose chemotherapy with stem cell rescue is a way of giving high doses of chemotherapy to treat Ewing sarcoma and then replacing blood -forming cells destroyed by cancer treatment. Stem cells (immature blood cells) are removed from the blood or bone marrow of the patient and are frozen and stored. After chemotherapy is completed, the stored stem cells are thawed and given back to the patient through an infusion. These reinfused stem cells grow into (and restore) the body's blood cells. Chemotherapy with stem cell rescue is used to treat recurrent Ewing sarcoma.
                
                
                    New types of treatment are being tested in clinical trials.
                    This summary section describes treatments that are being studied in clinical trials. It may not mention every new treatment being studied. Information about clinical trials is available from the NCI website.     Chimeric antigen receptor (CAR) T-cell therapy     CAR T-cell therapy is a type of immunotherapy that changes the patient's T cells (a type of immune system cell) so they will attack certain proteins on the surface of cancer cells. T cells are taken from the patient and special receptors are added to their surface in the laboratory. The changed cells are called chimeric antigen receptor (CAR) T cells. The CAR T cells are grown in the laboratory and given to the patient by infusion. The CAR T cells multiply in the patient's blood and attack cancer cells. CAR T-cell therapy is being studied in the treatment of Ewing sarcoma that has recurred.
                
                
                    Patients may want to think about taking part in a clinical trial.
                    For some patients, taking part in a clinical trial may be the best treatment choice. Clinical trials are part of the cancer research process. Clinical trials are done to find out if new cancer treatments are safe and effective or better than the standard treatment.   Many of today's standard treatments for cancer are based on earlier clinical trials. Patients who take part in a clinical trial may receive the standard treatment or be among the first to receive a new treatment.   Patients who take part in clinical trials also help improve the way cancer will be treated in the future. Even when clinical trials do not lead to effective new treatments, they often answer important questions and help move research forward.
                
                
                    Patients can enter clinical trials before, during, or after starting their cancer treatment.
                    Some clinical trials only include patients who have not yet received treatment. Other trials test treatments for patients whose cancer has not gotten better. There are also clinical trials that test new ways to stop cancer from recurring (coming back) or reduce the side effects of cancer treatment.   Clinical trials are taking place in many parts of the country. See the Treatment Options section that follows for links to current treatment clinical trials. These have been retrieved from NCI's listing of clinical trials.
                
                
                    Follow-up tests may be needed.
                    Some of the tests that were done to diagnose the cancer or to find out the stage of the cancer may be repeated. Some tests will be repeated in order to see how well the treatment is working. Decisions about whether to continue, change, or stop treatment may be based on the results of these tests.   Some of the tests will continue to be done from time to time after treatment has ended. The results of these tests can show if your child's condition has changed or if the cancer has recurred (come back). These tests are sometimes called follow-up tests or check-ups.
                
            
		        
		            Treatment Options for Ewing Sarcoma
		            
		                
		                    Localized Ewing Sarcoma
		                    Standard treatments for localized Ewing sarcoma include:         -  Chemotherapy.    -  Surgery and/or radiation therapy.         These treatments and the order they are given depend on the following:         - Where in the body the tumor started.    - How large the tumor is when the cancer is diagnosed.    - Whether the tumor was completely removed by surgery.    - The child's age and general health.    - Whether the treatment will affect important body functions or the way the child will look.         Treatments being studied for localized Ewing sarcoma include:         -  High-dose chemotherapy with stem cell rescue.        Check the list of NCI-supported cancer clinical trials that are now accepting patients with localized Ewing sarcoma/peripheral primitive neuroectodermal tumor. For more specific results, refine the search by using other search features, such as the location of the trial, the type of treatment, or the name of the drug. Talk with your child's doctor about clinical trials that may be right for your child. General information about clinical trials is available from the NCI website.
		                
		                
		                    Metastatic Ewing Sarcoma
		                    Standard treatments for metastatic Ewing sarcoma include:          -  Chemotherapy.    -  Surgery.    -  Radiation therapy.        These treatments and the order they are given depend on the following:          - Where in the body the tumor started.    - Where the tumor has spread.    - How large the tumor is.    - Whether the treatment will affect important body functions or the way the child will look.    - The child's age and general health.        Treatments being studied for metastatic Ewing sarcoma include the following:         -  Combination chemotherapy with or without targeted therapy. Radiation therapy is given to areas of bone where cancer has spread.    -  High-dose chemotherapy with stem cell rescue.        Check the list of NCI-supported cancer clinical trials that are now accepting patients with metastatic Ewing sarcoma/peripheral primitive neuroectodermal tumor. For more specific results, refine the search by using other search features, such as the location of the trial, the type of treatment, or the name of the drug. Talk with your child's doctor about clinical trials that may be right for your child. General information about clinical trials is available from the NCI website.
		                
		                
		                    Recurrent Ewing Sarcoma
		                    There is no standard treatment for recurrent Ewing sarcoma but treatment options may include the following:         -  Combination chemotherapy.    -  Radiation therapy to bone tumors, as palliative therapy to relieve symptoms and improve the quality of life.    -  Radiation therapy that may be followed by surgery to remove tumors that have spread to the lungs.     -  High-dose chemotherapy with stem cell rescue.    -  Targeted therapy with a monoclonal antibody.        These treatments and the order they are given depend on the following:         - Where in the body the tumor came back.    - The initial treatment given.        Treatment options being studied for recurrent Ewing sarcoma include the following:         -  Targeted therapy with a monoclonal antibody.     -  Chimeric antigen receptor (CAR) T-cell therapy.    - Targeted therapy with a PARP inhibitor and chemotherapy.        Check the list of NCI-supported cancer clinical trials that are now accepting patients with recurrent Ewing sarcoma/peripheral primitive neuroectodermal tumor. For more specific results, refine the search by using other search features, such as the location of the trial, the type of treatment, or the name of the drug. Talk with your child's doctor about clinical trials that may be right for your child. General information about clinical trials is available from the NCI website.