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Prognostic Value of a Positive RT-PCR Test in Patients With Ewing Sarcoma

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00339898
Recruitment Status : Completed
First Posted : June 21, 2006
Last Update Posted : May 16, 2019
Information provided by (Responsible Party):
National Institutes of Health Clinical Center (CC) ( National Cancer Institute (NCI) )

Brief Summary:

This study will determine whether the results of a test called reverse transcriptase-polymerase chain reaction (RT-PCR) correlate with clinical outcomes in patients with Ewing sarcoma, and if they can be used to help identify patients at high risk for metastasis (spread of the cancer beyond the original site).

This is a companion study to another NCI trial (AEWS0031), which is examining the effectiveness of an intensified chemotherapy regimen for patients with Ewing sarcoma. The primary purposes of AEWS0031 are to determine: 1) if chemotherapy given every 2 weeks can cure more patients with Ewing sarcoma and similar tumors than chemotherapy given every 3 weeks; and 2) if certain biological characteristics of these tumors can predict how well the chemotherapy will work.

Many, but not all, patients with Ewing sarcoma that has not metastasized can be cured with standard radiation, surgery, and chemotherapy treatment. Most patients whose tumors have spread, however, are not cured with standard treatment. A goal of future therapy is to identify patients at highest risk for metastasis so that they can be given more intensive therapy, and, conversely, patients at lower risk of relapse can receive less toxic treatment.

Patients enrolled in AEWS0031 are eligible for this companion study. No additional procedures re required; RT-PCR testing will be performed on blood and bone marrow samples collected for AEWS0031.


Condition or disease
Non-Metastatic Ewings Sarcoma

Detailed Description:

BACKGROUND: Clinical evidence for metastatic disease at the time of diagnosis is an indicator of poor prognosis in Ewing's sarcoma. Patients with non-metastatic disease at presentation are thought to have a better prognosis than those with metastatic disease. Unfortunately, patients who appear non-metastatic at presentation may relapse after initiating or completing standard therapy for Ewing's sarcoma. Evidence of metastatic disease may be determined by radiographic studies and biopsy of potential site(s) of disease. It is possible to identify submicroscopic Ewing's sarcoma cells in blood and bone marrow, yet the prognostic value of this finding is unclear.

OBJECTIVES: To determine the incidence of RT PCR positivity in the blood and bone marrow of patients enrolled on COG AEWS0031 and to correlate the clinical outcome with RT PCR positivity.

ELIGIBILITY: Concurrent enrollment on COG AEWS0031.

DESIGN: This is a Companion Biology Study, enrolling approximately 500 patients. All specimens will be evaluated for translocations, it is anticipated that approximately 30% of specimens will have RT PCR positivity. Specimens are collected at the time of diagnosis, prior to cycle 2 chemotherapy, prior to initiation of local control, and at the end of therapy/follow up. Batched specimens are provided to the NIH by the Cooperative Human Tissue Network (CHTN). Following the completion of the COG trial and appropriate follow up periods, RT PCR positivity will be compared with clinical outcome to determine prognostic value.

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Study Type : Observational
Actual Enrollment : 414 participants
Official Title: Prospective Evaluation of the Prognostic Relevance of PCR Positivity in Blood and Bone Marrow in Non-Metastatic Ewings Sarcoma
Study Start Date : March 12, 2004
Study Completion Date : January 13, 2015

Information from the National Library of Medicine

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Ages Eligible for Study:   2 Years to 30 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Patients enrolled on COG AEWS0031 are eligible for this study.


Patients who were enrolled but from whom samples were not obtained will not be enrolled on this study.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00339898

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United States, Maryland
National Cancer Institute (NCI), 9000 Rockville Pike
Bethesda, Maryland, United States, 20892
Sponsors and Collaborators
National Cancer Institute (NCI)
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Principal Investigator: Crystal L Mackall, M.D. National Cancer Institute (NCI)

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Responsible Party: National Cancer Institute (NCI) Identifier: NCT00339898     History of Changes
Obsolete Identifiers: NCT00899236
Other Study ID Numbers: 999904135
First Posted: June 21, 2006    Key Record Dates
Last Update Posted: May 16, 2019
Last Verified: January 13, 2015

Keywords provided by National Institutes of Health Clinical Center (CC) ( National Cancer Institute (NCI) ):
Minimal Residual Disease
Ewings Sarcoma

Additional relevant MeSH terms:
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Sarcoma, Ewing
Neoplasms, Connective and Soft Tissue
Neoplasms by Histologic Type
Neoplasms, Bone Tissue
Neoplasms, Connective Tissue