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Bone Mineral Density in Postmenopausal Women With Primary Breast Cancer Who Are Receiving Treatment on Clinical Trial CAN-NCIC-MA27

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT00354302
Recruitment Status : Completed
First Posted : July 20, 2006
Last Update Posted : November 28, 2016
Information provided by (Responsible Party):

Study Description
Brief Summary:

RATIONALE: Learning about the effect of exemestane and anastrozole on bone mineral density in postmenopausal women with primary breast cancer may help plan treatment, decrease the risk of broken bones, and help patients live more comfortably.

PURPOSE: This phase III trial is studying bone mineral density in postmenopausal women with primary breast cancer who are receiving treatment on clinical trial CAN-NCIC-MA27.

Condition or disease Intervention/treatment Phase
Breast Cancer Osteoporosis Dietary Supplement: calcium carbonate Dietary Supplement: calcium citrate Dietary Supplement: cholecalciferol Drug: alendronate sodium Drug: calcium gluconate Drug: risedronate sodium Other: laboratory biomarker analysis Procedure: dual x-ray absorptometry Phase 3

Detailed Description:


  • Determine whether there is a clinically relevant difference in bone mineral density (BMD) at 2 years in postmenopausal women with primary breast cancer (with or without osteopenia or osteoporosis) treated with exemestane vs anastrozole on protocol CAN-NCIC-MA27.

OUTLINE: This is a multicenter, companion study. Patients are stratified according to baseline bone mineral density (BMD) measurement (T-score* ≥ -2.0 standard deviation [SD] [no osteopenia or osteoporosis] vs T-score* < -2.0 SD).

NOTE: *The lowest of the two T-scores: L1-L4 or total hip

Blood samples for the identification of bone biomarkers (formation marker: serum amino-terminal procollagen 1 extension peptide [P1NP] and resorption marker: serum N-telopeptide) are obtained at baseline and at 6 and 12 months. BMD is determined by dual-energy x-ray absorptiometry (DEXA) at baseline and then annually for 5 years (or for as long as patient is receiving treatment on protocol CAN-NCIC-MA27).

Patients receive oral calcium and oral cholecalciferol (vitamin D) daily. Patients with osteopenia or osteoporosis (stratum II) also receive oral bisphosphonate therapy

PROJECTED ACCRUAL: A total of 408 patients will be accrued for this study.

Study Design

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 497 participants
Intervention Model: Single Group Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Diagnostic
Official Title: The Influence of Five Years of Adjuvant Anastrozole or Exemestane on Bone Mineral Density In Postmenopausal Women With Primary Breast Cancer
Study Start Date : April 2006
Primary Completion Date : March 2011
Study Completion Date : March 2011

Resource links provided by the National Library of Medicine

U.S. FDA Resources

Arms and Interventions

Outcome Measures

Primary Outcome Measures :
  1. Percentage change of bone mineral density (BMD) measured at 2 years (from baseline) in the L1-L4 region of the spine and the hip [ Time Frame: 5 years ]

Secondary Outcome Measures :
  1. Percentage change in BMD at 5 years (from baseline) [ Time Frame: 5 years ]
  2. Mean percentage change in BMD at 1, 3, and 5 years (from baseline) [ Time Frame: 5 years ]
  3. Proportion of patients without osteopenia or osteoporosis (stratum I) who develop BMD below the absolute threshold for osteopenia (< -2.0 standard deviation below the mean), suffer any osteoporotic fracture, or have an asymptomatic fracture revealed ... [ Time Frame: 5 years ]
  4. Percentage of patients with osteopenia or osteoporosis (stratum II) who have ≥ 5% improvement of BMD at 2 years post randomization on protocol CAN-NCIC-MA27 and who have clinically apparent osteoporosis-related fracture of the long bones [ Time Frame: 5 years ]
  5. Pattern of change in bone biomarkers from baseline [ Time Frame: 5 years ]
  6. Clinical safety and tolerability of study medications [ Time Frame: 5 years ]

Eligibility Criteria

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Ages Eligible for Study:   45 Years to 120 Years   (Adult, Senior)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No


  • Enrolled in and meets eligibility requirements for protocol CAN-NCIC-MA27
  • Acceptable quality dual-energy x-ray absorptiometry (DEXA) of the L1-L4 postero-anterior spine and hip within 12 weeks prior to randomization on protocol CAN-NCIC-MA27
  • Hormone receptor status:

    • Estrogen receptor- and/or progesterone receptor-positive tumor


  • Female
  • Postmenopausal
  • No malabsorption syndrome
  • No known cholecalciferol (vitamin D) deficiency, active hyper- or hypoparathyroidism, or Paget's disease
  • No uncontrolled thyroid disease, Cushing's disease, or other pituitary disease
  • No other bone disease (including osteomalacia or osteogenesis imperfecta)


  • More than 6 months since prior drugs (investigational or not), including bisphosphonates, for the prevention of osteoporosis (stratum I)
  • More than 12 months since prior and no concurrent anticonvulsants
  • More than 6 months since prior and no concurrent corticosteroids at doses > 5 mg/day of prednisone (or equivalent) for > 2 weeks
  • More than 12 months since prior and no concurrent anabolic steroids
  • No prior bisphosphonates (stratum II)
  • No concurrent sodium fluoride at daily doses ≥ 5 mg/day
  • No long-term (i.e., > 6 months) use of coumarins
  • No concurrent drugs (investigational or not), including bisphosphonates, for the prevention of osteoporosis (for patients with no osteopenia or osteoporosis [stratum I])
Contacts and Locations

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00354302

Canada, British Columbia
BCCA - Vancouver Cancer Centre
Vancouver, British Columbia, Canada, V5Z 4E6
Canada, Manitoba
CancerCare Manitoba
Winnipeg, Manitoba, Canada, R3E 0V9
Canada, New Brunswick
The Moncton Hospital
Moncton, New Brunswick, Canada, E1C 6Z8
Atlantic Health Sciences Corporation
Saint John, New Brunswick, Canada, E2L 4L2
Canada, Ontario
Cambridge Memorial Hospital
Cambridge, Ontario, Canada, N1R 3G2
Algoma District Cancer Program
Sault Ste. Marie, Ontario, Canada, P6B 0A8
Thunder Bay Regional Health Science Centre
Thunder Bay, Ontario, Canada, P7B 6V4
Odette Cancer Centre
Toronto, Ontario, Canada, M4N 3M5
St. Michael's Hospital
Toronto, Ontario, Canada, M5B 1W8
Univ. Health Network-Princess Margaret Hospital
Toronto, Ontario, Canada, M5G 2M9
Canada, Quebec
Hopital Charles LeMoyne
Greenfield Park, Quebec, Canada, J4V 2H1
CHA-Hopital Du St-Sacrement
Quebec City, Quebec, Canada, G1S 4L8
Canada, Saskatchewan
Allan Blair Cancer Centre
Regina, Saskatchewan, Canada, S4T 7T1
Sponsors and Collaborators
NCIC Clinical Trials Group
National Cancer Institute (NCI)
North Central Cancer Treatment Group
Southwest Oncology Group
Study Chair: Paul E. Goss, MD, PhD Massachusetts General Hospital
Study Chair: James N. Ingle, MD Mayo Clinic
Study Chair: Dawn Hershman, MD Herbert Irving Comprehensive Cancer Center
More Information

Responsible Party: NCIC Clinical Trials Group
ClinicalTrials.gov Identifier: NCT00354302     History of Changes
Other Study ID Numbers: MA27B
CAN-NCIC-MA27B ( Registry Identifier: National Cancer Institute - Physician Data Query )
CDR0000483099 ( Other Identifier: PDQ )
First Posted: July 20, 2006    Key Record Dates
Last Update Posted: November 28, 2016
Last Verified: January 2012

Keywords provided by Canadian Cancer Trials Group ( NCIC Clinical Trials Group ):
stage I breast cancer
stage II breast cancer
stage IIIA breast cancer

Additional relevant MeSH terms:
Breast Neoplasms
Neoplasms by Site
Breast Diseases
Skin Diseases
Bone Diseases, Metabolic
Bone Diseases
Musculoskeletal Diseases
Metabolic Diseases
Calcium, Dietary
Risedronate Sodium
Calcium Carbonate
Bone Density Conservation Agents
Physiological Effects of Drugs
Growth Substances
Calcium Channel Blockers
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action
Gastrointestinal Agents