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Clinical trialNCT06068075Active, not recruitingInterventional

Liquid Biopsy in Ewing Sarcoma and Osteosarcoma as a Prognostic And Response Diagnostic: LEOPARD

SponsorDana-Farber Cancer InstituteEnrollment340Ewing SarcomaEwing Sarcoma of BoneEwing Sarcoma of Soft TissueHigh-grade OsteosarcomaPeripheral Primitive Neuroectodermal TumorPeripheral Primitive Neuroectodermal Tumor of Bone+1 more conditions
View the registry record on ClinicalTrials.gov

Summary

The registered summary isn't in our current data snapshot. Read it on the ClinicalTrials.gov record ↗. Why? →

Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

15 registered facilities, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States
  • Childrens Hospital Los Angeles

    Los Angeles, California, United States

  • Children'S Healthcare of Atlanta

    Atlanta, Georgia, United States

  • Boston Children'S Hospital

    Boston, Massachusetts, United States

  • Brigham and Women'S Hospital

    Boston, Massachusetts, United States

  • Dana Farber Cancer Institute

    Boston, Massachusetts, United States

  • Massachusetts General Hospital Cancer Center

    Boston, Massachusetts, United States

  • Children'S Hospital'S and Clinics of Minnesota

    Minneapolis, Minnesota, United States

  • Cincinnati Children'S Hospital Medical Center

    Cincinnati, Ohio, United States

  • Nationwide Children'S Hospital

    Columbus, Ohio, United States

  • Children'S Hospital of Philadelphia

    Philadelphia, Pennsylvania, United States

  • Lifespan / Rhode Island Hospital

    Providence, Rhode Island, United States

  • St. Jude Children'S Research Hospital

    Memphis, Tennessee, United States

  • Ut Southwestern Medical Center

    Dallas, Texas, United States

  • University of Utah Childrens Medical Center

    Salt Lake City, Utah, United States

  • Seattle Children'S Hospital

    Seattle, Washington, United States

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

No drug or biological interventions are in our data for this study — it may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start
8 May 2018
Primary completion
1 Jan 2027
Completion
1 Jan 2027
Last update posted
5 May 2026
Registered enrollment
340
Registry id
NCT06068075

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 12 Jul 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.