This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

Radiologic Evaluation and Breast Density (READ)

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified September 2009 by Group Health Cooperative.
Recruitment status was:  Recruiting
Information provided by:
Group Health Cooperative Identifier:
First received: June 30, 2005
Last updated: September 10, 2009
Last verified: September 2009
The purpose of this study is to determine whether cessation of hormone replacement therapy for one or two months before a screening mammogram will improve its performance by decreasing breast density.

Condition Intervention
Breast Cancer Drug: Cessation of Hormone Replacement Therapy

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Double
Primary Purpose: Diagnostic
Official Title: A Population-Based Randomized Trial to Assess the Effects of Short-Term Cessation of Hormone Replacement Therapy (HRT) on Mammography Assessments and Breast Density

Resource links provided by NLM:

Further study details as provided by Group Health Cooperative:

Primary Outcome Measures:
  • Mammogram recall for additional imaging
  • Mammographic breast density

Secondary Outcome Measures:
  • HRT cessation post study
  • Menopausal symptoms
  • Adverse events

Estimated Enrollment: 1500
Study Start Date: November 2004
Estimated Study Completion Date: November 2006
Detailed Description:
This randomized, controlled trial is designed to test whether short-term (1-2 months) HRT cessation will sufficiently lower breast density to decrease the proportion of women who receive a recommendation for additional evaluation following a screening mammogram, and to examine whether there is a trend by duration of cessation. The study is being conducted at Group Health Cooperative, a managed health care organization in western Washington State with an organized breast cancer screening program. We are recruiting 1,500 women and will randomize women to one of three HRT arms: 1) cessation two months before the screening mammogram; 2) cessation one month before; and 3) continued HRT use. We are using a computer-assisted method to measure mammographic breast density continuously. Mammography recall rates are being determined from an expert radiologist review of the mammograms, blinded to HRT status.

Ages Eligible for Study:   45 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • 1 or more prior screening mammograms at Group Health Cooperative within the past 2 years
  • Currently taking HRT
  • Taking HRT at prior screening mammogram
  • Due for a screening mammogram

Exclusion Criteria:

  • BI-RADS breast density of 1 (entirely fat)
  • Previous cardiovascular events (heart surgery, catheterization, stent bypass, angioplasty, stroke, DVT)
  • Previous breast cancer
  • History of breast implants
  • Breast reduction since last mammogram
  • Mastectomy
  • History of using Tamoxifen or Raloxifene
  • Declined contact or use of data for research
  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: NCT00117663

Contact: Dawn Fitzgibbons, MPH 206-287-2380

United States, Washington
Group Health Research Institute Recruiting
Seattle, Washington, United States, 98101
Contact: Linda Palmer, RN    206-287-2732   
Principal Investigator: Diana SM Buist, Ph.D.         
Sponsors and Collaborators
Group Health Cooperative
Principal Investigator: Diana SM Buist, Ph.D. Group Health Cooperative
  More Information

Publications automatically indexed to this study by Identifier (NCT Number): Identifier: NCT00117663     History of Changes
Other Study ID Numbers: DAMD17-03-1-0447
Study First Received: June 30, 2005
Last Updated: September 10, 2009

Keywords provided by Group Health Cooperative:
Randomized controlled trial
health care setting
hormone replacement therapy
breast density
mammography performance
Breast Carcinoma

Additional relevant MeSH terms:
Hormones, Hormone Substitutes, and Hormone Antagonists
Physiological Effects of Drugs processed this record on August 18, 2017