SWOG 8897-A DNA Analysis in Predicting Treatment Outcome in Women With Breast Cancer in SWOG 8897

February 15, 2017 updated by: Southwest Oncology Group

Pharmacogenetics in Relation to Breast Cancer Outcomes in SWOG 8897

RATIONALE: Studying samples of 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 a patient's response to treatment.

PURPOSE: This laboratory study is looking at DNA in tissue samples from women with breast cancer to see if it can predict treatment outcome.

Study Overview

Status

Completed

Conditions

Breast Cancer

Intervention / Treatment

Detailed Description

OBJECTIVES:

Determine if polymorphisms resulting in greater activation of cyclophosphamide (CYP2B6, CYP3A4, and CYP3A5) are associated with disease-free survival and treatment toxicities in women with breast cancer.
Determine if polymorphisms resulting in less production of quinone-related oxidative damage of doxorubicin hydrochloride (NQO1, NQO2, NOS2, NOS3, CBR3) are associated with disease-free survival and treatment toxicities in these patients.

OUTLINE: This is a multicenter study.

Tissue samples archived on clinical trial SWOG-8897 are genotyped for polymorphisms in the CYP3A4, CYP3A5, CYP2B6, NQO1, NQO2, NOS2, NOS3, and CBR3 genes by matrix-assisted laser desorption ionization-time-of-flight mass spectrometry. Variant alleles are correlated with patient outcome.

PROJECTED ACCRUAL: A total of 1,577 patients will be accrued for this study.

Study Type

Observational

Enrollment (Actual)

1577

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

Genders Eligible for Study

Female

Sampling Method

Non-Probability Sample

Study Population

patients enrolled to SWOG 8897 consenting to banking

Description

DISEASE CHARACTERISTICS:

Diagnosis of breast cancer
- Node-negative breast cancer
Enrolled on clinical trial SWOG-8897
- Archived tissue from patients with normal lymph nodes in the low-risk group receiving no treatment and those in the intermediate group receiving treatment
Hormone receptor status known

PATIENT CHARACTERISTICS:

Female
Pre- or post-menopausal

PRIOR CONCURRENT THERAPY:

Not specified

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Differences in outcome according to common variant alleles Time Frame: Through study follow-up an average of 10.8 years	Through study follow-up an average of 10.8 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Southwest Oncology Group

Collaborators

National Cancer Institute (NCI)

Investigators

Study Chair: Christine B. Ambrosone, PhD, Roswell Park Cancer Institute

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

December 1, 2006

Primary Completion (Actual)

June 1, 2007

Study Completion (Actual)

June 1, 2007

Study Registration Dates

First Submitted

May 9, 2009

First Submitted That Met QC Criteria