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Gene Damage Following Chemotherapy in Women With Stage II or Stage III Breast Cancer

This study has been completed.
Sponsor:
Collaborator:
National Cancer Institute (NCI)
Information provided by (Responsible Party):
Southwest Oncology Group
ClinicalTrials.gov Identifier:
NCT00003095
First received: November 1, 1999
Last updated: November 19, 2012
Last verified: November 2012
History of Changes
  Purpose

RATIONALE: Drugs used in chemotherapy for breast cancer may damage the genes of cells. This may lead to the development of secondary cancers.

PURPOSE: Pilot study to evaluate the degree of gene damage following chemotherapy in women with stage II or stage III breast cancer involving four to nine axillary lymph nodes.


Condition
Breast Cancer

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: S9719: Clonal Hematopoiesis as a Marker of Genetic Damage Following Adjuvant Chemotherapy for Breast Cancer: Pilot Study to Evaluate Incidence. Ancillary to S9623

Resource links provided by NLM:

U.S. FDA Resources

Further study details as provided by Southwest Oncology Group:

Biospecimen Retention:   Samples With DNA

tissue and blood


Enrollment: 26
Study Start Date: November 1997
Study Completion Date: February 2001
Primary Completion Date: February 2001 (Final data collection date for primary outcome measure)
Groups/Cohorts
bone marrow transplant
bone marrow transplant
standard chemotherapy
standard chemotherapy

Detailed Description:

OBJECTIVES: I. Estimate the incidence of early genetic damage, defined by the presence of clonal hematopoiesis using the human androgen receptor assay (HUMARA), in pretreatment blood and bone marrow, apheresis, and two sequential post-treatment specimens from women with stage II/III breast cancer enrolled in SWOG-S9623. II. Detect genetic damage following dose-intensive adjuvant regimens for breast cancer by screening for the presence of defective DNA mismatch repair mechanisms and loss of heterozygosity using microsatellite instability assays. III. Estimate the incidence of myeloid lymphoid leukemia gene fusion transcripts in cases where either the HUMARA or microsatellite repeat assays are positive for clonal hematopoiesis. IV. Determine the frequency of RAS gene mutations (H-, K-, and N-RAS) following dose-intensive adjuvant regimens for breast cancer.

OUTLINE: Prior to beginning treatment on SWOG-9623, blood samples and bone marrow aspirates (when available) are collected from each patient. Patients randomized to autologous peripheral stem cell transplant have specimens collected again at 3 months (apheresis aliquot and blood). At 3 and 12 months after completing chemotherapy, blood samples are collected from all patients. Samples are collected again from any patient presenting with a second malignancy in the future. DNA is collected from blood or bone marrow samples. Clonality at the HUMARA locus is examined. Microsatellite instability is assessed at multiple chromosomal loci: 7q31, 5q31, 17p12, 8p22, 11q23, and the BAT loci. If the HUMARA or microsatellite repeat assays are positive for clonal hematopoiesis, then specimens are examined for myeloid lymphoid leukemia fusion transcripts commonly reported in acute myeloid leukemia with 11q23 abnormalities. Specimens are also examined for RAS mutations (H-, K-, N-RAS). Patients do not receive the results of the genetic testing and the results do not influence the type or duration of treatment.

PROJECTED ACCRUAL: This study will accrue 100 patients for each arm of SWOG-9623, for a total of 200 patients.

  Eligibility

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Female
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population

Must be enrolled in SWOG-9623 at time of registration to this study, but must not have started treatment Hormone receptor status: Not specified

Criteria

DISEASE CHARACTERISTICS: Must be enrolled in SWOG-9623 at time of registration to this study, but must not have started treatment Hormone receptor status: Not specified

PATIENT CHARACTERISTICS: Age: Adult Sex: Female Menopausal status: Not specified Performance status: See Disease Characteristics Life expectancy: SWOG 0 or 1 Hematopoietic: See Disease Characteristics Hepatic: See Disease Characteristics Renal: See Disease Characteristics

PRIOR CONCURRENT THERAPY: See Disease Characteristics

  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00003095

  Show 83 Study Locations
Sponsors and Collaborators
Southwest Oncology Group
National Cancer Institute (NCI)
Investigators
Study Chair: Marilyn L. Slovak, PhD Beckman Research Institute
  More Information

Additional Information:
Clinical trial summary from the National Cancer Institute's PDQ® database  This link exits the ClinicalTrials.gov site

No publications provided

Responsible Party: Southwest Oncology Group
ClinicalTrials.gov Identifier: NCT00003095     History of Changes
Other Study ID Numbers: CDR0000065813, S9719, U10CA032102
Study First Received: November 1, 1999
Last Updated: November 19, 2012
Health Authority: United States: Federal Government

Keywords provided by Southwest Oncology Group:
stage II breast cancer
stage III breast cancer

Additional relevant MeSH terms:
Breast Neoplasms
Neoplasms by Site
Neoplasms
Breast Diseases
Skin Diseases

ClinicalTrials.gov processed this record on May 16, 2013