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Condition Guide

New Treatments & Clinical Trials for Ewing Sarcoma

Last updated August 2026Data from ClinicalTrials.gov95 active trials
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Ewing sarcoma is a rare bone and soft tissue cancer that occurs mainly in children and young adults. Treatment typically involves chemotherapy, surgery, and sometimes radiation. About 70% of people with localized disease are cured, but outcomes are worse when the cancer has spread, driving research into new treatments.

What's actually going on in research

Trials are testing targeted drugs that attack specific vulnerabilities in Ewing sarcoma cells, including IGF-1R inhibitors and PARP inhibitors. Immunotherapy approaches are being studied to help the immune system recognize these tumors. Researchers are also testing combinations that might improve chemotherapy response and studying ways to treat or prevent metastatic disease.

Targeted therapy combinations

Drugs targeting IGF-1R and other pathways specific to Ewing sarcoma are being tested alongside chemotherapy. Early trials suggest some combinations may help shrink tumors that don't respond well to standard treatment.

Immunotherapy approaches

Ewing sarcoma cells often hide from the immune system, making them difficult to treat with immunotherapy. Trials are testing CAR T-cell therapy, vaccines, and drugs that expose tumor cells to immune attack.

Maintenance therapy

Studies are testing whether ongoing treatment after initial therapy can prevent relapse. This includes targeted drugs and immune-based approaches given over months or years.

What to know before you search

Eligibility typically depends on whether the cancer is newly diagnosed or relapsed, disease location and extent, prior treatments received, and age.

What types of trials are currently open

  • Upfront treatment trialsTesting new drug combinations added to standard chemotherapy for newly diagnosed Ewing sarcoma, aiming to improve cure rates.
  • Relapsed disease trialsTesting targeted drugs, immunotherapy, or new chemotherapy combinations for Ewing sarcoma that has returned after initial treatment.
  • Maintenance trialsTesting whether treatment given after completion of standard therapy can prevent the cancer from coming back.
  • Surgery and radiation studiesStudies comparing different surgical approaches or radiation techniques to preserve function while controlling the tumor.
  • Biomarker studiesResearch tracking tumor characteristics to predict which patients will respond to specific treatments.

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