Biomarkers in Native American Women With Breast Cancer

Completed

• Conditions: Breast Cancer
• Interventions: Other: immunohistochemistry staining method; Other: laboratory biomarker analysis

• Registration Number: NCT00898976
• Lead Sponsor: Alliance for Clinical Trials in Oncology

Brief Summary

RATIONALE: Studying samples of tumor tissue in the laboratory from Native American women with breast cancer may help doctors identify and learn more about biomarkers related to breast cancer in these patients. It may also help doctors learn more about the prognosis of these patients.

PURPOSE: This laboratory study is looking at biomarkers in Native American women with breast cancer.

Detailed Description

OBJECTIVES:

* Evaluate a selected panel of molecular markers in tissue specimens from Native American women with breast cancer.

* Determine which molecular markers provide independent prognostic information with respect to traditional prognostic factors in these patients.

* Compare and contrast the prevalence of positivity in Native American women with breast cancer with an age- and stage-matched cohort of Caucasian women with breast cancer enrolled on clinical trial NCCTG-77-30-51 or the Mayo Breast Cancer Registry.

OUTLINE: Immunohistochemistry is performed on tumor samples to analyze the following molecular markers: estrogen receptor, progesterone receptor, c-erbB2, p53, Ki-67, Bcl-2, Bax, cyclin D-1, and insulin-like growth factor-1R.

Study Timeline

• Study Start: 1998-08
• Primary Completion: 2007-05
• Study Completion: 2007-05
• Study First Submitted: 2009-05-09
• Study First Submitted QC: 2009-05-09
• Study First Posted: 2009-05-12
• Status Verified: 2016-07
• Last Update Submitted: 2016-07-12
• Last Update Posted: 2016-07-13

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Female
• Target Recruitment: 120

Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Group I	laboratory biomarker analysis	Immunohistochemistry is performed on tumor samples to analyze the following molecular markers: estrogen receptor, progesterone receptor, c-erbB2, p53, Ki-67, Bcl-2, Bax, cyclin D-1, and insulin-like growth factor-1R. PROJECTED ACCRUAL: A total of 300 tissue samples (150 from Native American women and 150 from Caucasian women) will be accrued for this study.
Group I	immunohistochemistry staining method	Immunohistochemistry is performed on tumor samples to analyze the following molecular markers: estrogen receptor, progesterone receptor, c-erbB2, p53, Ki-67, Bcl-2, Bax, cyclin D-1, and insulin-like growth factor-1R. PROJECTED ACCRUAL: A total of 300 tissue samples (150 from Native American women and 150 from Caucasian women) will be accrued for this study.

Primary Outcome Measures

Name	Time	Method
Determination of which molecular markers provide independent prognostic information with respect to traditional prognostic factors	Up to 5 years
Comparison of the prevalence of positivity in Native American women with breast cancer with an age- and stage-matched cohort of Caucasian women with breast cancer enrolled on clinical trial NCCTG-77-30-51 or the Mayo Breast Cancer Registry	Up to 5 years
Evaluation of a selected panel of molecular markers in tissue specimens from Native American women with breast cancer	Up to 5 years