Calcium With or Without Estrogen and/or Risedronate in Preventing Osteoporosis in Patients With Prostate Cancer

This study has been completed.
Information provided by:
National Cancer Institute (NCI) Identifier:
First received: August 5, 2002
Last updated: February 18, 2011
Last verified: January 2007

RATIONALE: Preventing bone loss in patients who are undergoing androgen ablation for prostate cancer may decrease the risk of fractures and may help patients live more comfortably. It is not yet known whether calcium is more effective with or without estrogen and/or risedronate in preventing osteoporosis.

PURPOSE: Randomized phase III trial to compare the effectiveness of two forms of calcium with or without estrogen and/or risedronate in preventing osteoporosis in patients with prostate cancer who are receiving androgen ablation therapy.

Condition Intervention Phase
Prostate Cancer
Dietary Supplement: calcium carbonate
Dietary Supplement: cholecalciferol
Drug: conjugated estrogens
Drug: risedronate sodium
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Masking: Double-Blind
Primary Purpose: Supportive Care
Official Title: Osteoporosis Prevention in Prostate Cancer Patients Receiving Androgen Ablation Therapy: A Phase III Randomized, Placebo-Controlled, Double-Blind Study

Resource links provided by NLM:

Further study details as provided by National Cancer Institute (NCI):

Primary Outcome Measures:
  • Bone mineral density by test at 1 and 2 years

Secondary Outcome Measures:
  • Toxicity questionnaires every 6 months

Study Start Date: November 2002
Primary Completion Date: January 2010 (Final data collection date for primary outcome measure)
Detailed Description:


  • Compare the change in bone mineral density in patients with prostate cancer who are receiving androgen-ablation therapy treated with calcium and cholecalciferol with or without conjugated estrogens and with or without risedronate.
  • Compare the toxicity of these regimens in these patients.
  • Compare the changes in bone markers in patients treated with these regimens.
  • Compare the quality of life of patients treated with these regimens.
  • Compare hot flashes in patients treated with these regimens.

OUTLINE: This is a randomized, double-blind, placebo-controlled, multicenter study. Patients are stratified according to duration of therapy with luteinizing hormone-releasing hormone agonists (no more than 30 days vs 31 to 150 days vs 151 to 365 days vs more than 365 days). Patients are randomized to 1 of 4 treatment arms.

  • Arm I: Patients receive oral calcium, oral cholecalciferol, oral risedronate placebo, and oral estrogen placebo daily.
  • Arm II: Patients receive oral calcium, oral cholecalciferol, oral risedronate, and oral estrogen placebo daily.
  • Arm III: Patients receive oral calcium, oral cholecalciferol, low-dose oral conjugated estrogens, and oral risedronate placebo daily.
  • Arm IV: Patients receive oral calcium, oral cholecalciferol, low-dose oral conjugated estrogens, and oral risedronate daily.

Treatment in all arms continues for 2 years.

Quality of life is assessed at baseline, monthly for 6 months, and then at 1 and 2 years.

Bone mineral density is assessed at baseline, 6 months, and 1 and 2 years.

PROJECTED ACCRUAL: A total of 282 patients (70 per treatment arm) will be accrued for this study within 14 months.


Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Male
Accepts Healthy Volunteers:   No


  • History of prostate cancer

    • No evidence of metastatic bony disease* NOTE: *Elevated prostate-specific antigen (PSA) allowed
  • Meets one of the following criteria:

    • Currently on treatment with androgen-ablation therapy in the adjuvant setting
    • Rising PSA without other evidence of recurrent disease with planned treatment for at least 6 months
  • No known osteoporosis or prior osteoporotic fracture

    • Osteoporosis defined as bone density at the hip or spine of more than 2.5 standard deviations below the mean for young men



  • 18 and over

Performance status

  • Not specified

Life expectancy

  • Not specified


  • Not specified


  • SGOT or SGPT no greater than 1.5 times upper limit of normal (ULN)
  • Alkaline phosphatase normal OR no greater than 1.5 times ULN with a normal bone scan


  • Creatinine no greater than 1.5 times ULN
  • No prior symptomatic hypercalcemia or hypocalcemia


  • No active heart disease
  • No congestive heart failure under active treatment
  • No myocardial infarction within the past 5 years
  • No coronary artery disease (CAD) with recent myocardial infarction

    • Patients with a remote history of CAD who are only on medical treatment (e.g., antilipid agents) are allowed
  • No prior thrombosis (deep vein thrombosis, stroke, or pulmonary embolism) or other known hypercoagulable state other than cancer


  • Fertile patients must use effective contraception
  • Triglycerides no greater than 250 mg/dL (treatment allowed)
  • Able to complete questionnaire(s) by self or with assistance
  • Able to swallow pills
  • No prior hyperlipidemia (e.g., prior familial hyperlipidemia or fasting triglyceride greater than 250 mg/dL within the past 6 months)
  • No sarcoidosis
  • No parathyroid dysfunction
  • No intolerance to bisphosphonates


Biologic therapy

  • Not specified


  • No concurrent chemotherapy

Endocrine therapy

  • See Disease Characteristics
  • No concurrent systemic steroids


  • No concurrent radiotherapy


  • More than 3 months since prior and no concurrent dental extraction, root canal, or dental implantation


  • No prior bisphosphonates
  • More than 5 years since prior percutaneous transluminal coronary angioplasty
  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: NCT00043069

  Show 114 Study Locations
Sponsors and Collaborators
North Central Cancer Treatment Group
Study Chair: Charles L. Loprinzi, MD Mayo Clinic
  More Information

Additional Information:
Publications: Identifier: NCT00043069     History of Changes
Other Study ID Numbers: CDR0000069502, NCCTG-N01C8, NCI-P02-0229
Study First Received: August 5, 2002
Last Updated: February 18, 2011
Health Authority: United States: Federal Government

Keywords provided by National Cancer Institute (NCI):
stage I prostate cancer
stage IIB prostate cancer
stage IIA prostate cancer
stage III prostate cancer

Additional relevant MeSH terms:
Prostatic Neoplasms
Bone Diseases
Bone Diseases, Metabolic
Genital Diseases, Male
Genital Neoplasms, Male
Musculoskeletal Diseases
Neoplasms by Site
Prostatic Diseases
Urogenital Neoplasms
Calcium Carbonate
Estrogens, Conjugated (USP)
Risedronic acid
Bone Density Conservation Agents
Calcium Channel Blockers
Cardiovascular Agents
Growth Substances
Hormones, Hormone Substitutes, and Hormone Antagonists
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action
Pharmacologic Actions
Physiological Effects of Drugs
Therapeutic Uses
Vitamins processed this record on July 01, 2015