Working... Menu

Genetic Study of Children With Soft Tissue Sarcoma or Rhabdomyosarcoma

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: NCT00003793
Recruitment Status : Completed
First Posted : January 27, 2003
Last Update Posted : August 5, 2014
National Cancer Institute (NCI)
Information provided by (Responsible Party):
Children's Oncology Group

Brief Summary:

RATIONALE: Determination of genetic markers for soft tissue sarcoma or rhabdomyosarcoma may help doctors identify patients who are at risk for therapy-related leukemia.

PURPOSE: Clinical trial to study genetic testing of children with soft tissue sarcoma or rhabdomyosarcoma to identify children who are at risk of developing leukemia from the chemotherapy used to treat sarcoma.

Condition or disease Intervention/treatment
Leukemia Myelodysplastic Syndromes Sarcoma Genetic: clonality analysis Genetic: microsatellite instability analysis Genetic: mutation analysis

Detailed Description:


  • Identify genetically susceptible patients to therapy-induced myelodysplastic syndrome or acute myelogenous leukemia (t-MDS/AML) prior to initiation of high-dose chemotherapy for sarcoma.
  • Identify patients who are at increased risk of t-MDS/AML during or after therapy.

OUTLINE: Blood is collected from patients at diagnosis (preferably before chemotherapy or transfusion), at end of therapy, and at 6 months, 1 year, 2 years, and 3 years after therapy.

Blood specimens are examined by clonality analysis (HUMARA), variant cell frequency (glycophorin A assay), GST NAT2/CYP1A1 genotyping, microsatellite instability, and ras mutation detection (single strand conformation polymorphism and sequencing of mutant alleles).

Patients do not receive the results of the genetic testing and the results do not influence the type or duration of treatment.

PROJECTED ACCRUAL: A total of 321 patients will be accrued for this study within 4 years.

Layout table for study information
Study Type : Observational
Actual Enrollment : 294 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Clinical and Biological Predictors of Therapy-Related Leukemia
Study Start Date : December 1998
Actual Primary Completion Date : December 2005
Actual Study Completion Date : March 2007

Group/Cohort Intervention/treatment
Identification of Genetical suceptibility prior to therapy
Determine the glutathione-s-transferase theta (GSTT1) or glutathione-s-transferase mu (GSTM1) null genotype is more frequent in individuals with t-MDS/AML. Determine the GSTT1 or GSTM1 null genotype is associated with a reduced incidence of relapse of sarcoma. Determine NAT2 or CYP1A1 genotype influences risk of t-MDS/AML. Determine development of a "mutator phenotype" as demonstrated by developing microsatellite instability is an early marker of individuals likely to progress to t-MDS/AML.
Genetic: microsatellite instability analysis
Genetic: mutation analysis
Increased Risk Of T-MDS/AML before/after Therapy
Determine clonal hematopoiesis develops in children receiving high intensity alkylating agent chemotherapy for sarcomas. Determine development of clonal hematopoiesis is associated with increased frequency of t-MDS/AML. Determine measurement of somatic cell mutation frequency, measured by the glycophorin A (GPA) assay prior to and after chemotherapy will predict individuals at increased risk of t-MDS/AML. Identify individuals with ras gene mutations in normal peripheral blood cells after therapy, and whether the identification of such mutations is associated with increased risk of t-MDS/AML blood cells after therapy, and whether the identification of such mutations is associated with increased risk of t-MDS/AML.
Genetic: clonality analysis
Genetic: microsatellite instability analysis
Genetic: mutation analysis

Primary Outcome Measures :
  1. Event Free Survival

Biospecimen Retention:   Samples With DNA

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   up to 17 Years   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Children receiving high dose chemotherapy for sarcomas.


  • Diagnosis of sarcoma including:

    • Rhabdomyosarcoma
    • Ewing's sarcoma
    • Primitive neuroectodermal tumor
    • Fibrosarcoma
    • Malignant peripheral nerve sheath tumor
    • Synovial cell sarcoma
    • Osteosarcoma
    • Other soft tissue sarcoma
  • Must be currently receiving intensive or high-dose chemotherapy for sarcoma



  • Children

Performance status:

  • Not specified

Life expectancy:

  • Not specified


  • Not specified


  • Not specified


  • Not specified


Biologic therapy

  • Not specified


  • See Disease Characteristics

Endocrine therapy

  • Not specified


  • Not specified


  • Not specified

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): NCT00003793

  Show 96 Study Locations
Sponsors and Collaborators
Children's Oncology Group
National Cancer Institute (NCI)
Layout table for investigator information
Study Chair: Stella M. Davies, MBBS, PhD Children's Hospital Medical Center, Cincinnati

Layout table for additonal information
Responsible Party: Children's Oncology Group Identifier: NCT00003793     History of Changes
Other Study ID Numbers: AB9804
COG-AB9804 ( Other Identifier: Children's Oncology Group )
CCG-B9804 ( Other Identifier: Children's Cancer Group )
CDR0000066936 ( Other Identifier: Clinical )
First Posted: January 27, 2003    Key Record Dates
Last Update Posted: August 5, 2014
Last Verified: August 2014

Keywords provided by Children's Oncology Group:
secondary acute myeloid leukemia
secondary myelodysplastic syndromes
localized osteosarcoma
metastatic osteosarcoma
childhood soft tissue sarcoma
nonmetastatic childhood soft tissue sarcoma
metastatic childhood soft tissue sarcoma
childhood fibrosarcoma
childhood synovial sarcoma
childhood neurofibrosarcoma
previously untreated childhood rhabdomyosarcoma
localized Ewing sarcoma/peripheral primitive neuroectodermal tumor
metastatic Ewing sarcoma/peripheral primitive neuroectodermal tumor

Additional relevant MeSH terms:
Layout table for MeSH terms
Myelodysplastic Syndromes
Neoplasms by Histologic Type
Neoplasms, Connective and Soft Tissue
Bone Marrow Diseases
Hematologic Diseases
Precancerous Conditions
Neoplasms, Muscle Tissue