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Histology of Functional Density in Postmenopausal Breast

This study is enrolling participants by invitation only.
Information provided by (Responsible Party):
Carrie Hruska, Mayo Clinic Identifier:
First received: November 5, 2010
Last updated: May 19, 2016
Last verified: May 2016
Increased mammographic density is recognized as an important risk factor for developing breast cancer, however, the underlying mechanism explaining this relationship is unclear. The investigators hypothesize that Molecular Breast Imaging (MBI) can more accurately distinguish dense tissue on mammography which is at high risk from dense tissue at low risk by indicating cellular activity in dense tissue as radiotracer uptake (functional density) in the breast. In this pilot study, the investigators want to compare the histological characteristics of breast tissue in patients with who have similar density on mammography but different levels of functional density on MBI.

Dense Breasts
Breast Cancer

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: Pilot Study to Examine Histological Characteristics of Mammographic Density With Molecular Breast Imaging: Part 1 - Postmenopausal Women

Resource links provided by NLM:

Further study details as provided by Mayo Clinic:

Primary Outcome Measures:
  • proportion of epithelium vs stroma [ Time Frame: within 1 month of functional density assessment on MBI ]

Secondary Outcome Measures:
  • Degree of lobular involution [ Time Frame: within 1 month of functional density assessment on MBI ]
    Degree of lobular involution as assessed through qualitative and quantitative measurements will be compared between dense tissue which appears photopenic on MBI and dense tissue which appears functionally active on MBI.

  • Ki-67 cellular proliferation index [ Time Frame: within 1 month of functional density assessment on MBI ]
    Degree of cellular proliferation as assessed through Ki-67 index will be compared between dense tissue which appears photopenic on MBI and dense tissue which appears functionally active on MBI.

Biospecimen Retention:   Samples Without DNA
core biopsy samples of dense breast tissue

Estimated Enrollment: 20
Study Start Date: November 2010
Estimated Study Completion Date: December 2016
Estimated Primary Completion Date: October 2016 (Final data collection date for primary outcome measure)

Ages Eligible for Study:   40 Years and older   (Adult, Senior)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Women with mammographically dense breasts who demonstrate either photopenic or marked background parenchymal uptake on MBI.

Inclusion Criteria:

  1. Age 40 or older
  2. Be postmenopausal as defined as having at least 12 consecutive months of amenorrhea
  3. Screening mammogram performed at Mayo Clinic Rochester within one year prior to the current MBI study which demonstrates

    1. Negative or benign assessment (BIRADs category 1-2)
    2. No proliferative benign lesions (e.g. fibroadenomas) identified
    3. Heterogeneously dense or extremely dense parenchyma (BIRADs density category 3 or 4)
  4. MBI performed less than one month prior to biopsy demonstrating either significant FD or photopenic FD.

Exclusion criteria:

  1. Using any exogenous hormones (e.g., hormonal contraceptives, sex steroid hormones) or any estrogen receptor modulating drugs (e.g., tamoxifen, raloxifene) or any aromatase inhibitors within six months prior to study biopsy.
  2. Personal history of any cancer, except non-melanomatous skin cancer
  3. Current breast symptoms
  4. Breast implants
  5. Known allergy to local anesthetic.
  6. History of bleeding complications from prior interventions
  7. Current use of anticoagulants (e.g., Coumadin or other blood thinners)
  8. Major medical condition
  Contacts and Locations
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Please refer to this study by its identifier: NCT01240278

United States, Minnesota
Mayo Clinic in Rochester
Rochester, Minnesota, United States, 55905
Sponsors and Collaborators
Mayo Clinic
Principal Investigator: Carrie Hruska, PhD Mayo Clinic
  More Information

Responsible Party: Carrie Hruska, Assistant Professor, Mayo Clinic Identifier: NCT01240278     History of Changes
Other Study ID Numbers: 10-004506
Study First Received: November 5, 2010
Last Updated: May 19, 2016 processed this record on May 25, 2017