ATAC - Bone Density Sub-Protocol

April 24, 2009 updated by: AstraZeneca

A Randomised, Double-Blind Trial to Assess the Effects on Bone Mineral Density and Metabolism of Arimidex Alone, Nolvadex Alone, or Arimidex and Nolvadex in Combination, (in Comparison to a Control Group) When Used as Adjuvant Treatment for Breast Cancer in Postmenopausal Women

To assess and quantify the changes in bone mineral density between the ARIMIDEX and ARIMIDEX plus NOLVADEX groups when compared to the NOLVADEX alone treatment group whilst receiving trial therapy.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

308

Phase

  • Phase 3

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

45 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Description

Inclusion Criteria:

  • Eligible for entry into the main ATAC trial 1033IL/0029
  • Women defined as post-menopausal
  • Patients with histologically proven operable invasive breast cancer
  • Who following primary surgery have a good prognosis and would be ethically suitable to remain untreated

Exclusion Criteria:

  • Excluded from entry into the main ATAC trial (1033IL/0029)
  • Patients who have received hormone replacement therapy within the previous 12 months prior to randomisation
  • Patients who have received bisphosphonate therapy within the previous 12 months prior to randomisation
  • Patients who have had a bone fracture within the previous 6 months prior to randomisation

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

  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: 1
Arimidex 1mg + Nolvadex placebo
Drug: Anastrozole
1mg, orally, once daily
Other Names:
  • Arimidex
Active Comparator: 2
Arimidex placebo + Nolvadex 20mg
Drug: Anastrozole
1mg, orally, once daily
Other Names:
  • Arimidex
Drug: Tamoxifen
20mg, orally, once daily
Other Names:
  • Nolvadex
Active Comparator: 3
Arimidex 1mg + Nolvadex 20mg
Drug: Tamoxifen
20mg, orally, once daily
Other Names:
  • Nolvadex

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time to recurrence
Time to withdrawal

Collaborators and Investigators

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

Sponsor

AstraZeneca

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

June 1, 1998

Primary Completion (Actual)

March 1, 2005

Study Completion (Actual)

April 1, 2007

Study Registration Dates

First Submitted

November 3, 2008

First Submitted That Met QC Criteria

November 3, 2008

First Posted (Estimate)

November 4, 2008

Study Record Updates

Last Update Posted (Estimate)

April 27, 2009

Last Update Submitted That Met QC Criteria

April 24, 2009

Last Verified

April 1, 2009

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 1033ID/0029
  • D5392C01985

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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