Completed
SABRE

A Multicentre Phase III/IV Study, of the Effects of Risedronate Sodium (ACTONEL™, 35mg/Week, Oral) on Bone, in Postmenopausal Women, With Hormone-receptor-positive Early Breast Cancer, Treated With Anastrozole (ARIMIDEX™, 1mg/Day Oral) With Risk of Fragility Fracture (High-risk Fragility Fracture-open-label, Non-comparative Stratum; Moderate-risk of Fragility Fracture-randomised, Double-blind Stratum; Low-risk of Fragility Fracture - Open-label, Non-comparative Stratum)Abbreviated

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What is being tested

Anastrozole

+ Risedronate Sodium
Drug
Who is being recruted

Breast Diseases
+2

+ Breast Neoplasms
+ Neoplasms
Over 55 Years
See all eligibility criteria
How is the trial designed

Treatment Study

Phase 4
Interventional
Study Start: April 2004
See protocol details

Summary

Principal SponsorAstraZeneca
Last updated: January 14, 2026
Sourced from a government-validated database.Claim as a partner
Study start date: April 1, 2004Actual date on which the first participant was enrolled.

The purpose of this study is to evaluate safety parameters of anastrozole with regard to its potential effects on postmenopausal bone loss and on lipid profiles. This trial is conducted to investigate the effects of risedronate on BMD and on bone metabolism in postmenopausal women using anastrozole as adjuvant therapy for hormone-receptor-positive early breast cancer and who are high or moderate risk of fragility fracture. It is also conducted to determine the effects of anastrozole on bone mineral density (BMD) and on bone metabolism in women at low risk of fragility fracture.

Official TitleA Multicentre Phase III/IV Study, of the Effects of Risedronate Sodium (ACTONEL™, 35mg/Week, Oral) on Bone, in Postmenopausal Women, With Hormone-receptor-positive Early Breast Cancer, Treated With Anastrozole (ARIMIDEX™, 1mg/Day Oral) With Risk of Fragility Fracture (High-risk Fragility Fracture-open-label, Non-comparative Stratum; Moderate-risk of Fragility Fracture-randomised, Double-blind Stratum; Low-risk of Fragility Fracture - Open-label, Non-comparative Stratum)Abbreviated 
NCT00082277
Principal SponsorAstraZeneca
Last updated: January 14, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details
237 patients to be enrolledTotal number of participants that the clinical trial aims to recruit.
Treatment Study
These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.

How participants are assigned to different groups/arms
In this clinical study, participants are placed into groups randomly, like flipping a coin. This ensures that the study is fair and unbiased, making the results more reliable. By assigning participants by chance, researchers can better compare treatments without external influences.

Other Ways to Assign Participants
Non-randomized allocation: Participants are assigned based on specific factors, such as their medical condition or a doctor's decision.
None (Single-arm trial): If the study has only one group, all participants receive the same treatment, and no allocation is needed.

How treatments are given to participants
Participants are divided into different groups, each receiving a specific treatment at the same time. This helps researchers compare how well different treatments work against each other.

Other Ways to Assign Treatments
Single-group assignment: Everyone gets the same treatment.
Cross-over assignment: Participants switch between treatments during the study.
Factorial assignment: Participants receive different combinations of treatments.
Sequential assignment: Participants receive treatments one after another in a specific order, possibly based on individual responses.
Other assignment: Treatment assignment does not follow a standard or predefined design.

How the effectiveness of the treatment is controlled
In a non placebo-controlled study, no participants receive an inert substance (placebo) to compare outcomes. Instead, all participants receive either the experimental treatment or an alternative treatment (often the Standard of Care). This method allows researchers to compare the effects of the experimental treatment with those of a different active intervention, rather than a placebo.

Other Options
Placebo-Controlled: A placebo is used to compare the effects of the experimental treatment with those of an inert substance, isolating the true treatment effect.

How the interventions assigned to participants is kept confidential
Participants, researchers, and outcome assessors do not know which treatment is being given. This helps reduce bias not just during the study, but also when the results are being evaluated.

Other Ways to Mask Information
Open-label: Everyone knows which treatment is being given.
Single-blind: Participants do not know which treatment they are receiving, but researchers do.
Double-blind: Neither participants nor researchers know which treatment is given.
Quadruple-blind: Participants, researchers, outcome assessors, and care providers all do not know which treatment is given.

Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria
FemaleBiological sex of participants that are eligible to enroll.
Over 55 YearsRange of ages for which participants are eligible to join.
Healthy volunteers not allowedIf individuals who are healthy and do not have the condition being studied can participate.
Conditions
Pathology
Breast Diseases
Breast Neoplasms
Neoplasms
Neoplasms by Site
Skin Diseases
Criteria

Inclusion Criteria: * Women defined as Postmenopausal * Histologically proven operable invasive breast cancer * Hormone-receptor-positive breast cancer Exclusion Criteria: * Clinical evidence of metastatic disease * Bilateral hip fractures or bilateral hip prosthesis * Receiving or received in last 12 months hormonal therapy for breast cancer, bisphosphonate therapy, oestrogens * Malabsorption syndrome

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives
3 intervention groups 

are designated in this study

This study does not include a placebo group 

Treatment Groups
Group I
Experimental
High-Risk Fragility Fracture-Open-Label, Non-Comparative Stratum

1mg/Day Oral

35mg/week, oral
Group II
Experimental
Moderate-Risk of Fragility Fracture-Randomised, Double-Blind Stratum

1mg/Day Oral

35mg/week, oral
Group III
Experimental
Low-Risk of Fragility Fracture - Open-Label, Non-Comparative Stratum

1mg/Day Oral

35mg/week, oral
Study Objectives
Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.
This study has 35 locations
Suspended
Research SitePalm Springs, United StatesSee the location
Suspended
Research SiteJacksonville, United States
Suspended
Research SiteNew Orleans, United States
Suspended
Research SiteNew York, United States
Completed35 Study Centers