Breast Density, Hormone Levels, and Anticancer Drug Levels in Women With Invasive Breast Cancer Who Are Receiving Exemestane or Anastrozole
Recruitment status was Active, not recruiting
RATIONALE: Understanding the relationship between breast density, levels of hormones in the blood, and levels of anticancer drugs in the blood may help improve the ability to plan effective treatment for women with invasive breast cancer.
PURPOSE: This clinical trial is studying the relationship between breast density and blood levels of hormones and anticancer drugs in women with invasive breast cancer who are receiving exemestane or anastrozole.
Other: laboratory biomarker analysis
Other: pharmacological study
|Study Design:||Masking: Open Label
Primary Purpose: Diagnostic
|Official Title:||The Association of Breast Density Changes, Plasma Hormone Changes, and Breast Cancer Recurrence: A Companion Study to NCIC CTG MA.27|
- Changes in breast density measured by percent and area at 1 and 2 years [ Designated as safety issue: No ]
- Correlation of changes in breast density with plasma hormones and drug levels measured by estrone, estrone-sulfate, estradiol, sex hormone binding globulin, anastrozole, or exemestane levels at 1 and 2 years [ Designated as safety issue: No ]
- Correlation of breast density with contralateral breast cancers at 1 and 2 years [ Designated as safety issue: No ]
|Study Start Date:||April 2006|
|Estimated Primary Completion Date:||October 2010 (Final data collection date for primary outcome measure)|
- Assess the change in percent breast density and dense area in response to aromatase inhibitor therapy from pretreatment to 1 year, 1 year to 2 years, and pretreatment to 2 years in women with invasive breast cancer.
- Determine the changes in percent breast density and dense area in response to aromatase inhibitor therapy from pretreatment to 1 year and correlate the changes with changes in plasma hormones (e.g., estrone, estrone-sulfate, estradiol, and sex hormone binding globulin) and drug levels (anastrozole or exemestane) over the same period in women with invasive breast cancer.
- Determine the change over time in percent breast density and dense area (from pretreatment to the time period prior to local recurrence) in the contralateral breast in correlation to local recurrence of breast cancer.
- Determine the change over time in percent breast density and dense area in the contralateral breast in correlation to the development of contralateral breast cancer.
- Determine whether women with high pretreatment percent density (upper tertile) experience greater decreases in percent breast density at 1 and 2 years of aromatase inhibitor therapy than women with low pretreatment percent density (lower tertile).
- Determine whether women with high pretreatment dense area (upper tertile) experience greater decreases in dense area at 1 and 2 years of aromatase inhibitor therapy than women with low pretreatment dense area (lower tertile).
- Correlate haplotype tagged single nucleotide polymorphisms in genes in the aromatase pathway (identified thorough the Mayo Clinic and Indiana University Pharmacogenomics Research Network Projects) with changes in percent and area breast density, plasma hormone levels, and 1-year drug levels.
OUTLINE: This is a multicenter, companion study.
Patients complete a 10-minute questionnaire about factors that might affect changes in breast density at baseline and another questionnaire at 1 year and 2 years post registration. Blood samples are collected at baseline (before initiation of treatment ) and at 1 year post registration for hormone and drug level analysis. Mammograms taken prior to registration (within 12 months prior to enrollment) and at approximately 1 and 2 years post-registration to this study are retrieved and digitized for determination of percent breast density and dense area.
PROJECTED ACCRUAL: A total of 550 patients will be accrued for this study.
Show 324 Study Locations
|Study Chair:||James N. Ingle, MD||Mayo Clinic|
|Investigator:||Celine M. Vachon, PhD||Mayo Clinic|
|Investigator:||Paul E. Goss, MD, PhD||Massachusetts General Hospital|
|Investigator:||Philip J. Stella, MD||Ann Arbor Hematology Oncology Associates, PC at St. Joseph Mercy Cancer Center|
|Investigator:||Kathleen I. Pritchard, MD||Edmond Odette Cancer Centre at Sunnybrook|
|Study Chair:||Kathleen I. Pritchard, MD||Edmond Odette Cancer Centre at Sunnybrook|