# Collecting and Storing Biological Samples From Patients With Ewing Sarcoma

> **NCT00899990** · — · COMPLETED · sponsor: **Children's Oncology Group** · enrollment: 908 (actual)

## Conditions studied

- Askin Tumor
- Localized Ewing Sarcoma/Peripheral Primitive Neuroectodermal Tumor
- Metastatic Ewing Sarcoma/Peripheral Primitive Neuroectodermal Tumor
- Recurrent Ewing Sarcoma/Peripheral Primitive Neuroectodermal Tumor

## Interventions

- **OTHER:** Laboratory Biomarker Analysis

## Key facts

- **NCT ID:** NCT00899990
- **Lead sponsor:** Children's Oncology Group
- **Sponsor class:** NETWORK
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2008-02-04
- **Primary completion:** 2023-09-30
- **Final completion:** 2023-09-30
- **Target enrollment:** 908 (ACTUAL)
- **Last updated:** 2023-10-03

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00899990

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00899990, "Collecting and Storing Biological Samples From Patients With Ewing Sarcoma". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT00899990. Licensed CC0.

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