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S9313B Study of Tumor Tissue Samples From Women With Early-Stage Breast Cancer Enrolled on Clinical Trial SWOG-9313

This study has been completed.
Information provided by (Responsible Party):
Southwest Oncology Group Identifier:
First received: July 29, 2009
Last updated: May 23, 2014
Last verified: May 2014

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. It may also help doctors predict how patients enrolled on clinical trial SWOG-9313 will respond to doxorubicin and cyclophosphamide.

PURPOSE: This laboratory study is looking at tumor tissue samples from women with early-stage breast cancer enrolled on clinical trial SWOG-9313.

Condition Intervention
Breast Cancer
Other: immunohistochemistry staining method
Other: laboratory biomarker analysis

Study Type: Observational
Study Design: Time Perspective: Retrospective
Official Title: Evaluation of the Expression of the Cancer Stem Cell Marker ALDH1 as a Predictor of Adjuvant Chemotherapy Response in Breast Cancers of High Risk Women in SWOG-9313

Resource links provided by NLM:

Further study details as provided by Southwest Oncology Group:

Primary Outcome Measures:
  • Correlation of ALDH1 with disease-free survival and overall survival [ Time Frame: Retrospectively ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Correlation of ALDH1 with other biomarkers (TOPOII, HER2, ER, PgR) [ Time Frame: Retrospectively ] [ Designated as safety issue: No ]

Enrollment: 1600
Study Start Date: January 2009
Study Completion Date: April 2009
Primary Completion Date: April 2009 (Final data collection date for primary outcome measure)
Detailed Description:



  • To determine if ALDH1 positivity, as determined by IHC staining, identifies a poor prognostic subgroup of women with early-stage breast cancer who have been uniformly treated with adjuvant doxorubicin and cyclophosphamide on clinical trial SWOG-9313.


  • To determine associations of ALDH1 expression with other known factors that have been determined on clinical trial SWOG-9313, such as estrogen receptor (ER) status, HER2 status, TOPOII, cyclin E, and p27.
  • To determine if ALDH1 positivity, as determined by IHC staining, identifies a poor prognostic subgroup within ER and HER2 subgroups in patients treated on clinical trial SWOG-9313.

OUTLINE: This is a multicenter study.

Tumor tissue samples from clinical trial SWOG-9313 are analyzed for ALDH1 expression by IHC.


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

Patients enrolled to S9313 consenting to banking



  • Tumor samples collected from women diagnosed with early-stage breast cancer on clinical trial SWOG-9313 available


  • Not specified


  • See Disease Characteristics
  Contacts and Locations
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, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00949013

Sponsors and Collaborators
Southwest Oncology Group
Study Chair: Daniel F. Hayes, MD University of Michigan Cancer Center
  More Information

Additional Information:
No publications provided

Responsible Party: Southwest Oncology Group Identifier: NCT00949013     History of Changes
Other Study ID Numbers: CDR0000632885, S9313B-ICSC, U10CA032102
Study First Received: July 29, 2009
Last Updated: May 23, 2014
Health Authority: United States: Federal Government

Keywords provided by Southwest Oncology Group:
stage IA breast cancer
stage IB breast cancer
stage II breast cancer
stage IIIA breast cancer
stage IIIB breast cancer
stage IIIC breast cancer

Additional relevant MeSH terms:
Breast Neoplasms
Breast Diseases
Neoplasms by Site
Skin Diseases processed this record on March 03, 2015