Recruiting NA INTERVENTIONAL 2-arm NCT06068075

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

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

Sponsor: Alex's Lemonade Stand Foundation

Conditions Ewing Sarcoma Ewing Sarcoma of Bone Ewing Sarcoma of Soft Tissue High-grade Osteosarcoma Peripheral Primitive Neuroectodermal Tumor Peripheral Primitive Neuroectodermal Tumor of Bone Peripheral Primitive Neuroectodermal Tumor of Soft Tissue

Interventions FoundationOne Liquid CDx

Updated 6 times since 2023 Last updated: Jan 21, 2026 Started: May 8, 2018 Primary completion: Jan 1, 2027 Completion: Jan 1, 2027

This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

Listed as NCT06068075, this NA trial focuses on Ewing Sarcoma and Ewing Sarcoma of Bone and remains actively recruiting participants. Sponsored by Alex's Lemonade Stand Foundation, it has been updated 6 times since 2018, reflecting limited change activity. This study contributes to the evolving evidence base for cancer treatment protocols.

Status Flow

Change History

6 versions recorded

Feb 2026 — Present [monthly]

Recruiting NA
Feb 2025 — Feb 2026 [monthly]

Recruiting NA
Dec 2024 — Feb 2025 [monthly]

Recruiting NA
Sep 2024 — Dec 2024 [monthly]

Recruiting NA
Jul 2024 — Sep 2024 [monthly]

Recruiting NA

▶ Show 1 earlier version

Nov 2023 — Jul 2024 [monthly]

Recruiting NA

First recorded

May 2018

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

Alex's Lemonade Stand Foundation
Conquer Cancer Foundation
Dana-Farber Cancer Institute
Harvard University
Sam Day Foundation

Data source: Dana-Farber Cancer Institute

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations

Atlanta, United States , Boston, United States , Cincinnati, United States , Columbus, United States , Dallas, United States , Los Angeles, United States , Memphis, United States , Minneapolis, United States , Philadelphia, United States , Providence, United States and 2 more locations