Ignite Creation Date:
2025-12-25 @ 4:59 AM
Ignite Modification Date:
2026-02-27 @ 3:47 PM
Study NCT ID:
NCT01480518
Status:
COMPLETED
Last Update Posted:
2015-05-12
First Post:
2011-11-22
Is NOT Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
Biomarkers in Tissue Samples From Patients With Ewing Sarcoma
Sponsor:
Children's Oncology Group
Organization:
Study Overview
Official Title:
Analysis of GGAA-Microsatellites in Ewing Sarcoma
Status:
COMPLETED
Status Verified Date:
2015-05
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
RATIONALE: Studying samples of tissue in the laboratory may help doctors learn more about changes that occur in DNA and identify biomarkers related to cancer. It may also help doctors understand how well patients respond to treatment.
PURPOSE: This research study is studying biomarkers in tissue samples from patients with Ewing sarcoma.
PURPOSE: This research study is studying biomarkers in tissue samples from patients with Ewing sarcoma.
Detailed Description:
OBJECTIVES:
* To describe the spectrum of GGAA-microsatellite polymorphisms at specific loci in genomic DNA prepared from Ewing sarcoma tumor specimens.
* To determine if there are differences in GGAA-microsatellite polymorphisms in genomic DNA prepared from Ewing sarcoma tumor specimens as compared to non-afflicted European and African normal genomic DNA.
* To determine if GGAA-microsatellite polymorphisms at specific loci in genomic DNA prepared from Ewing's sarcoma tumor specimens correlates with disease outcome in patients treated on COG protocol AEWS0031.
* To determine whether whole-genome amplification introduces alterations in GGAA-microsatellites as compared to non-amplified genomic DNA.
OUTLINE: Genomic PCR is used to amplify the microsatellites in the NR0B1 and GSTM4 promoters. In addition to determining microsatellite size, each microsatellite is sequenced following cloning into the pCR4 vector (Invitrogen) using standard topoisomerase cloning protocols.
* To describe the spectrum of GGAA-microsatellite polymorphisms at specific loci in genomic DNA prepared from Ewing sarcoma tumor specimens.
* To determine if there are differences in GGAA-microsatellite polymorphisms in genomic DNA prepared from Ewing sarcoma tumor specimens as compared to non-afflicted European and African normal genomic DNA.
* To determine if GGAA-microsatellite polymorphisms at specific loci in genomic DNA prepared from Ewing's sarcoma tumor specimens correlates with disease outcome in patients treated on COG protocol AEWS0031.
* To determine whether whole-genome amplification introduces alterations in GGAA-microsatellites as compared to non-amplified genomic DNA.
OUTLINE: Genomic PCR is used to amplify the microsatellites in the NR0B1 and GSTM4 promoters. In addition to determining microsatellite size, each microsatellite is sequenced following cloning into the pCR4 vector (Invitrogen) using standard topoisomerase cloning protocols.
Study Oversight
Has Oversight DMC:
False
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: