Study of Tumor Samples From Patients With Ewing Sarcoma

The recruitment status of this study is unknown because the information has not been verified recently.
Verified April 2009 by National Cancer Institute (NCI).
Recruitment status was  Active, not recruiting
Information provided by:
National Cancer Institute (NCI) Identifier:
First received: May 9, 2009
Last updated: May 16, 2009
Last verified: April 2009

RATIONALE: Studying samples of tumor tissue from patients with cancer in the laboratory may help doctors learn more about changes that occur in DNA and identify biomarkers related to cancer.

PURPOSE: This laboratory study is looking at tumor samples from patients with Ewing sarcoma.

Condition Intervention
Genetic: fluorescence in situ hybridization
Genetic: mutation analysis
Genetic: nucleic acid sequencing
Genetic: polymerase chain reaction
Other: immunohistochemistry staining method
Other: laboratory biomarker analysis

Study Type: Observational
Official Title: Prognostic Value of p53 and/or p16 Alterations in Ewing Sarcoma

Resource links provided by NLM:

Further study details as provided by National Cancer Institute (NCI):

Primary Outcome Measures:
  • Event-free survival [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Incidence of p53 mutations [ Designated as safety issue: No ]
  • Incidence of p16 loss or deletion [ Designated as safety issue: No ]

Estimated Enrollment: 200
Study Start Date: September 2008
Estimated Primary Completion Date: April 2010 (Final data collection date for primary outcome measure)
Detailed Description:



  • Determine if mutation of p53, and/or deletion of the p16 locus, have prognostic value in patients with Ewing sarcoma.


  • Estimate the incidence of p53 mutation in Ewing sarcoma samples collected from COG studies.
  • Estimate the incidence of p16 deletions in Ewing sarcoma samples collected from COG studies.
  • Prepare and archive amplified genomic DNA from Ewing sarcoma samples collected from COG studies for future biologic analysis.

OUTLINE: This is a multicenter study.

Previously archived tumor samples are analyzed for p53 mutations and p16 deletion by immunohistochemistry, FISH, PCR, and DNA sequencing.


Ages Eligible for Study:   up to 50 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No


  • Diagnosis of Ewing sarcoma
  • Banked specimens from patients enrolled on AEWS0031


  • Not specified


  • Not specified
  Contacts and Locations
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Please refer to this study by its identifier: NCT00898053

Sponsors and Collaborators
Children's Oncology Group
Study Chair: Stephen Lessnick, MD, PhD University of Utah
  More Information

Additional Information:
No publications provided Identifier: NCT00898053     History of Changes
Other Study ID Numbers: CDR0000614591, COG-AEWS08B1
Study First Received: May 9, 2009
Last Updated: May 16, 2009
Health Authority: United States: Federal Government

Keywords provided by National Cancer Institute (NCI):
localized Ewing sarcoma/peripheral primitive neuroectodermal tumor

Additional relevant MeSH terms:
Sarcoma, Ewing
Neoplasms by Histologic Type
Neoplasms, Bone Tissue
Neoplasms, Connective Tissue
Neoplasms, Connective and Soft Tissue
Osteosarcoma processed this record on April 16, 2015