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Zoledronic Acid in Treating Patients With Metastatic Breast Cancer, Metastatic Prostate Cancer, or Multiple Myeloma With Bone Involvement

A Randomized, Phase III Study of Standard Dosing Versus Longer Dosing Interval of Zoledronic Acid in Metastatic Cancer

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00869206
Enrollment
1822
Registered
2009-03-25
Start date
2009-03-31
Completion date
2017-01-31
Last updated
2018-11-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Adenocarcinoma, DS Stage II Plasma Cell Myeloma, DS Stage I Plasma Cell Myeloma, Metastatic Malignant Neoplasm to the Bone, Musculoskeletal Complication, Pain, Urinary Complications

Keywords

pain, Prostate Adenocarcinoma, urinary complications, stage IV breast cancer, Recurrent Breast Carcinoma, stage IV prostate cancer, recurrent prostate cancer, Recurrent Prostate Carcinoma, stage I multiple myeloma, stage II multiple myeloma, Refractory Plasma Cell Myeloma, bone metastases

Brief summary

This randomized phase III trial studies two different schedules of zoledronic acid to compare how well they work in reducing bone-related complications in patients with breast cancer, prostate cancer, or multiple myeloma that has spread to other places in the body and have bone involvement. Bone-related complications are a major cause of morbidity in patients with metastatic prostate cancer, breast cancer, and multiple myeloma. Zoledronic acid may stop the growth of cancer cells in the bone and may help relieve some of the symptoms caused by bone metastases. It is not yet known whether giving zoledronic acid more or less frequently is more effective in treating patients with metastatic cancer that has spread to the bone.

Detailed description

PRIMARY OBJECTIVES: I. To determine whether every-12-week therapy with zoledronic acid is not inferior to every-4-week therapy for patients with metastatic breast cancer, metastatic prostate cancer, or multiple myeloma involving bone, as measured by the proportion who experience at least one skeletal related event within 24 months after randomization. SECONDARY OBJECTIVES: I. To compare pain scores (Brief Pain Inventory) of patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. II. To compare the functional status (Eastern Cooperative Oncology Group \[ECOG\] performance status) of patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. III. To compare the incidence of osteonecrosis of the jaw in patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. IV. To compare the incidence of renal dysfunction in patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. V. To compare the skeletal morbidity rate of these patients, defined as the number of skeletal-related events per year, of patients receiving every 12 week dosing to those receiving every 4 week dosing. VI. To compare the suppression of serum markers of bone resorption of patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. VII. To determine whether every 12 week therapy with zoledronic acid is not inferior to every-4-week therapy for each subgroup of patients with either breast cancer, prostate cancer, or multiple myeloma, as measured by the proportion who experience at least one skeletal related event within 24 months after randomization. OUTLINE: Patients are randomized to 1 of 2 treatment arms. ARM I: Patients receive zoledronic acid intravenously (IV) over at least 15 minutes every 4 weeks for up to 2 years in the absence of disease progression or unacceptable toxicity. ARM II: Patients receive zoledronic acid IV over at least 15 minutes every 12 weeks for up to 2 years in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up every 4 weeks for 2 years from registration.

Interventions

DRUGzoledronic acid

Given IV

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
Alliance for Clinical Trials in Oncology
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Eligibility Criteria: * Histologic documentation of one of the following: breast adenocarcinoma, prostate adenocarcinoma or multiple myeloma * At least one site of bone metastasis or bone involvement by radiologic imaging including plain radiograph, computed tomography (CT), positron emission tomography (PET) scan, PET/CT scan, magnetic resonance imaging, bone scan, or skeletal survey; indeterminate lesions should be confirmed by a second imaging method * No prior treatment with IV bisphosphonates is allowed; prior treatment with oral bisphosphonates is allowed, but they must be discontinued prior to the initiation of protocol therapy * No prior treatment with denosumab * No prior treatment with radiopharmaceuticals; prior treatment with radioactive iodine is allowed; prostate cancer patients treated with brachytherapy are eligible * Prior radiation therapy to bone is allowed, provided that at least one site of bone metastasis has not been irradiated and radiation is completed prior to registration; there should be no plan for radiation therapy to non-irradiated sites of bone metastases * Prior adjuvant and metastatic chemotherapy, biologic therapy, and endocrine therapy is allowed * No current treatment with investigational agent(s) * Patients with known brain metastases are not eligible; patients who develop brain metastases during the study will be allowed to continue treatment as assigned * Not pregnant and not nursing * ECOG performance status 0-2 * Calculated creatinine clearance \>= 30 mL/min * Corrected serum calcium \>= 8.0 mg/dL (2.00 mmol/L) and \< 11.6 mg/dL (2.90 mmol/L) \* Corrected serum calcium should be calculated using standard institutional practices

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants With at Least One Skeletal-related Event (SRE) Within 2 Years After Randomization2 yearsTo determine whether every-12-week therapy with zoledronic acid is not inferior to every-4-week therapy for patients with metastatic breast cancer, metastatic prostate cancer, or multiple myeloma involving bone, as measured by the proportion of patients who would have experienced at least one skeletal related event within 24 months after randomization.

Secondary

MeasureTime frameDescription
Average ECOG Performance Statusfrom baseline up to 2 yearsTo compare functional status (ECOG performance status) of patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. The change scores were evaluated in a general linear model with repeated measures for treatment effect and the time trend with patient-specific characteristics being adjusted. Specifically the difference in score change per 4 weeks for Arm I using Arm II as the reference is reported. ECOG performance status is a measurement of a patients disability ranging from 0, fully active and able to carry out all pre disease performance without restriction, to 5, dead. The average performance status is reported below by arm.
Incidence of Osteonecrosis of the Jawfrom baseline up to 2 yearsTo compare the incidence of osteonecrosis of the jaw in patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. The percentage of participants with osteonecrosis is reported here.
Incidence of Renal Dysfunctionfrom baseline up to 2 yearsTo compare the incidence of renal dysfunction of patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. The percentage of patients with renal dysfunction, defined as grade 3 or grade 4 increased creatinine (Common Terminology Criteria for Adverse Events version 3.0), will be reported here.
Skeletal Morbidity Ratefrom baseline up to 2 yearsTo compare the skeletal morbidity rate, defined as the number of skeletal-related events per year, of patients receiving every 12 week dosing to those receiving every 4 week dosing.
Bone Turnover Assessed by Serum C-telopeptide (CTX) Levels (Breast Cancer)from baseline up to 2 yearsTo compare the suppression of serum markers of bone resorption of patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. The number of patients with high & low CTX values by arm will be reported here.
Average Pain Intensity Score as Assessed by the Brief Pain Inventory (BPI) Questionnairefrom baseline up to 2 yearsTo compare pain scores (Brief Pain Inventory) of patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. The change scores were evaluated in a general linear model with repeated measures for treatment effect and the time trend with patient-specific characteristics being adjusted for the mean interference score. Specifically the difference in score change per 4 weeks for Arm I using Arm II as the reference is reported. The score of the BPI questionnaire ranges from 0 being no pain to 10 being the most pain. The average score is reported for each arm below.
Proportion of Patients Having at Least One SRE Within 24 Months After Randomization for the Subgroups of Patients With Prostate Cancerfrom baseline up to 24 monthsTo determine whether every 12 week therapy with zoledronic acid is not inferior to every-4-week therapy for patients with prostate cancer, as measured by the proportion who experience at least one skeletal related event within 24 months after randomization.
Proportion of Patients Having at Least One SRE Within 24 Months After Randomization for the Subgroups of Patients With Multiple Myelomafrom baseline up to 24 monthsTo determine whether every 12 week therapy with zoledronic acid is not inferior to every-4-week therapy for patients with multiple myeloma, as measured by the proportion who experience at least one skeletal related event within 24 months after randomization.
Bone Turnover Assessed by Serum C-telopeptide (CTX) Levels (Prostate Cancer)from baseline up to 24 monthsTo compare the suppression of serum markers of bone resorption of patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. The number of patients with high & low CTX values by arm will be reported here.
Bone Turnover Assessed by Serum C-telopeptide (CTX) Levels (Multiple Myeloma)from baseline up to 24 monthsTo compare the suppression of serum markers of bone resorption of patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. The number of patients with high & low CTX values by arm will be reported here.
Proportion of Patients Having at Least One SRE Within 24 Months After Randomization for the Subgroups of Patients With Breast Cancerfrom baseline up to 24 monthsTo determine whether every 12 week therapy with zoledronic acid is not inferior to every-4-week therapy for patients with breast cancer, as measured by the proportion who experience at least one skeletal related event within 24 months after randomization.

Countries

Puerto Rico, United States

Participant flow

Participants by arm

ArmCount
Arm I (Zoledronic Acid Every 4 Weeks)
Patients receive zoledronic acid IV over at least 15 minutes every 4 weeks for up to 2 years in the absence of disease progression or unacceptable toxicity.
911
Arm II (Zoledronic Acid Every 12 Weeks)
Patients receive zoledronic acid IV over at least 15 minutes every 12 weeks for up to 2 years in the absence of disease progression or unacceptable toxicity.
911
Total1,822

Baseline characteristics

CharacteristicArm I (Zoledronic Acid Every 4 Weeks)Arm II (Zoledronic Acid Every 12 Weeks)Total
Age, Continuous65.3 years
STANDARD_DEVIATION 12.1
65.3 years
STANDARD_DEVIATION 11.7
65.3 years
STANDARD_DEVIATION 11.9
Region of Enrollment
United States
911 participants911 participants1822 participants
Sex: Female, Male
Female
414 Participants428 Participants842 Participants
Sex: Female, Male
Male
497 Participants483 Participants980 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
41 / 87942 / 868
other
Total, other adverse events
779 / 879750 / 868
serious
Total, serious adverse events
96 / 879103 / 868

Outcome results

Primary

Percentage of Participants With at Least One Skeletal-related Event (SRE) Within 2 Years After Randomization

To determine whether every-12-week therapy with zoledronic acid is not inferior to every-4-week therapy for patients with metastatic breast cancer, metastatic prostate cancer, or multiple myeloma involving bone, as measured by the proportion of patients who would have experienced at least one skeletal related event within 24 months after randomization.

Time frame: 2 years

Population: All patients that were eligible and completed treatment were analyzed.

ArmMeasureValue (NUMBER)
Arm I (Zoledronic Acid Every 4 Weeks)Percentage of Participants With at Least One Skeletal-related Event (SRE) Within 2 Years After Randomization67.6 percentage of participants
Arm II (Zoledronic Acid Every 12 Weeks)Percentage of Participants With at Least One Skeletal-related Event (SRE) Within 2 Years After Randomization67.9 percentage of participants
p-value: <=0.05Cochran-Mantel-Haenszel
Secondary

Average ECOG Performance Status

To compare functional status (ECOG performance status) of patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. The change scores were evaluated in a general linear model with repeated measures for treatment effect and the time trend with patient-specific characteristics being adjusted. Specifically the difference in score change per 4 weeks for Arm I using Arm II as the reference is reported. ECOG performance status is a measurement of a patients disability ranging from 0, fully active and able to carry out all pre disease performance without restriction, to 5, dead. The average performance status is reported below by arm.

Time frame: from baseline up to 2 years

Population: 1766 patients completed treatment and were analyzed.

ArmMeasureValue (MEAN)Dispersion
Arm I (Zoledronic Acid Every 4 Weeks)Average ECOG Performance Status0.82 score on a scaleStandard Error 0.042
Arm II (Zoledronic Acid Every 12 Weeks)Average ECOG Performance Status0.84 score on a scaleStandard Error 0.042
p-value: 0.64Mixed Models Analysis
Secondary

Average Pain Intensity Score as Assessed by the Brief Pain Inventory (BPI) Questionnaire

To compare pain scores (Brief Pain Inventory) of patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. The change scores were evaluated in a general linear model with repeated measures for treatment effect and the time trend with patient-specific characteristics being adjusted for the mean interference score. Specifically the difference in score change per 4 weeks for Arm I using Arm II as the reference is reported. The score of the BPI questionnaire ranges from 0 being no pain to 10 being the most pain. The average score is reported for each arm below.

Time frame: from baseline up to 2 years

Population: 1766 patients completed treatment and were analyzed.

ArmMeasureValue (MEAN)Dispersion
Arm I (Zoledronic Acid Every 4 Weeks)Average Pain Intensity Score as Assessed by the Brief Pain Inventory (BPI) Questionnaire2.06 score on a scaleStandard Error 0.14
Arm II (Zoledronic Acid Every 12 Weeks)Average Pain Intensity Score as Assessed by the Brief Pain Inventory (BPI) Questionnaire2.09 score on a scaleStandard Error 0.14
p-value: 0.68Mixed Models Analysis
Secondary

Bone Turnover Assessed by Serum C-telopeptide (CTX) Levels (Breast Cancer)

To compare the suppression of serum markers of bone resorption of patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. The number of patients with high & low CTX values by arm will be reported here.

Time frame: from baseline up to 2 years

Population: 266 breast cancer patients who were treated and included in this portion of the substudy.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Arm I (Zoledronic Acid Every 4 Weeks)Bone Turnover Assessed by Serum C-telopeptide (CTX) Levels (Breast Cancer)Low CTX (<0.415ng/ml)83 Participants
Arm I (Zoledronic Acid Every 4 Weeks)Bone Turnover Assessed by Serum C-telopeptide (CTX) Levels (Breast Cancer)High CTX (>0.415ng/ml)54 Participants
Arm II (Zoledronic Acid Every 12 Weeks)Bone Turnover Assessed by Serum C-telopeptide (CTX) Levels (Breast Cancer)High CTX (>0.415ng/ml)54 Participants
Arm II (Zoledronic Acid Every 12 Weeks)Bone Turnover Assessed by Serum C-telopeptide (CTX) Levels (Breast Cancer)Low CTX (<0.415ng/ml)75 Participants
Secondary

Bone Turnover Assessed by Serum C-telopeptide (CTX) Levels (Multiple Myeloma)

To compare the suppression of serum markers of bone resorption of patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. The number of patients with high & low CTX values by arm will be reported here.

Time frame: from baseline up to 24 months

Population: 74 multiple myeloma patients were treated and included in this portion of the substudy.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Arm I (Zoledronic Acid Every 4 Weeks)Bone Turnover Assessed by Serum C-telopeptide (CTX) Levels (Multiple Myeloma)Low CTX (<0.415ng/ml)15 Participants
Arm I (Zoledronic Acid Every 4 Weeks)Bone Turnover Assessed by Serum C-telopeptide (CTX) Levels (Multiple Myeloma)High CTX (>.0.415ng/ml)23 Participants
Arm II (Zoledronic Acid Every 12 Weeks)Bone Turnover Assessed by Serum C-telopeptide (CTX) Levels (Multiple Myeloma)Low CTX (<0.415ng/ml)19 Participants
Arm II (Zoledronic Acid Every 12 Weeks)Bone Turnover Assessed by Serum C-telopeptide (CTX) Levels (Multiple Myeloma)High CTX (>.0.415ng/ml)17 Participants
Secondary

Bone Turnover Assessed by Serum C-telopeptide (CTX) Levels (Prostate Cancer)

To compare the suppression of serum markers of bone resorption of patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. The number of patients with high & low CTX values by arm will be reported here.

Time frame: from baseline up to 24 months

Population: 207 prostate cancer patients who were treated and included in this portion of the substudy.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Arm I (Zoledronic Acid Every 4 Weeks)Bone Turnover Assessed by Serum C-telopeptide (CTX) Levels (Prostate Cancer)Low CTX (<0.415ng/ml)34 Participants
Arm I (Zoledronic Acid Every 4 Weeks)Bone Turnover Assessed by Serum C-telopeptide (CTX) Levels (Prostate Cancer)High CTX (>.0.415ng/ml)70 Participants
Arm II (Zoledronic Acid Every 12 Weeks)Bone Turnover Assessed by Serum C-telopeptide (CTX) Levels (Prostate Cancer)Low CTX (<0.415ng/ml)49 Participants
Arm II (Zoledronic Acid Every 12 Weeks)Bone Turnover Assessed by Serum C-telopeptide (CTX) Levels (Prostate Cancer)High CTX (>.0.415ng/ml)54 Participants
Secondary

Incidence of Osteonecrosis of the Jaw

To compare the incidence of osteonecrosis of the jaw in patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. The percentage of participants with osteonecrosis is reported here.

Time frame: from baseline up to 2 years

Population: 1766 patients completed treatment and were analyzed.

ArmMeasureValue (NUMBER)
Arm I (Zoledronic Acid Every 4 Weeks)Incidence of Osteonecrosis of the Jaw2.0 percentage of participants
Arm II (Zoledronic Acid Every 12 Weeks)Incidence of Osteonecrosis of the Jaw1.0 percentage of participants
Secondary

Incidence of Renal Dysfunction

To compare the incidence of renal dysfunction of patients with metastatic breast cancer, metastatic prostate cancer, or myeloma involving bone receiving every 12 week dosing of zoledronic acid to those receiving every 4 week dosing. The percentage of patients with renal dysfunction, defined as grade 3 or grade 4 increased creatinine (Common Terminology Criteria for Adverse Events version 3.0), will be reported here.

Time frame: from baseline up to 2 years

Population: 1689 patients completed treatment and were analyzed.

ArmMeasureValue (NUMBER)
Arm I (Zoledronic Acid Every 4 Weeks)Incidence of Renal Dysfunction1.2 percentage of participants
Arm II (Zoledronic Acid Every 12 Weeks)Incidence of Renal Dysfunction.5 percentage of participants
p-value: 0.195% CI: [-0.3, 1.7]Cochran-Mantel-Haenszel
Secondary

Proportion of Patients Having at Least One SRE Within 24 Months After Randomization for the Subgroups of Patients With Breast Cancer

To determine whether every 12 week therapy with zoledronic acid is not inferior to every-4-week therapy for patients with breast cancer, as measured by the proportion who experience at least one skeletal related event within 24 months after randomization.

Time frame: from baseline up to 24 months

Population: 820 patients completed treatment and were analyzed.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm I (Zoledronic Acid Every 4 Weeks)Proportion of Patients Having at Least One SRE Within 24 Months After Randomization for the Subgroups of Patients With Breast Cancer113 Participants
Arm II (Zoledronic Acid Every 12 Weeks)Proportion of Patients Having at Least One SRE Within 24 Months After Randomization for the Subgroups of Patients With Breast Cancer119 Participants
Secondary

Proportion of Patients Having at Least One SRE Within 24 Months After Randomization for the Subgroups of Patients With Multiple Myeloma

To determine whether every 12 week therapy with zoledronic acid is not inferior to every-4-week therapy for patients with multiple myeloma, as measured by the proportion who experience at least one skeletal related event within 24 months after randomization.

Time frame: from baseline up to 24 months

Population: 265 patient completed treatment and were analyzed.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm I (Zoledronic Acid Every 4 Weeks)Proportion of Patients Having at Least One SRE Within 24 Months After Randomization for the Subgroups of Patients With Multiple Myeloma35 Participants
Arm II (Zoledronic Acid Every 12 Weeks)Proportion of Patients Having at Least One SRE Within 24 Months After Randomization for the Subgroups of Patients With Multiple Myeloma30 Participants
Secondary

Proportion of Patients Having at Least One SRE Within 24 Months After Randomization for the Subgroups of Patients With Prostate Cancer

To determine whether every 12 week therapy with zoledronic acid is not inferior to every-4-week therapy for patients with prostate cancer, as measured by the proportion who experience at least one skeletal related event within 24 months after randomization.

Time frame: from baseline up to 24 months

Population: 660 patients completed treatment and were analyzed.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm I (Zoledronic Acid Every 4 Weeks)Proportion of Patients Having at Least One SRE Within 24 Months After Randomization for the Subgroups of Patients With Prostate Cancer107 Participants
Arm II (Zoledronic Acid Every 12 Weeks)Proportion of Patients Having at Least One SRE Within 24 Months After Randomization for the Subgroups of Patients With Prostate Cancer101 Participants
Secondary

Skeletal Morbidity Rate

To compare the skeletal morbidity rate, defined as the number of skeletal-related events per year, of patients receiving every 12 week dosing to those receiving every 4 week dosing.

Time frame: from baseline up to 2 years

Population: 1766 patients were treated and analyzed.

ArmMeasureValue (MEAN)Dispersion
Arm I (Zoledronic Acid Every 4 Weeks)Skeletal Morbidity Rate.4 SRE's per yearStandard Deviation 1
Arm II (Zoledronic Acid Every 12 Weeks)Skeletal Morbidity Rate.4 SRE's per yearStandard Deviation 1.1

Source: ClinicalTrials.gov · Data processed: Mar 4, 2026