Abstract
Bisphosphonates are the standard of care for preventing skeletal morbidity and treating hypercalcemia of malignancy in patients with bone metastases. Zoledronic acid (intravenous; 4 mg monthly) is approved to prevent skeletalrelated events (SREs) in patients with bone metastases from several tumor types, and can improve survival in some subsets of patients with skeletal metastases and high baseline bone turnover. In the adjuvant setting, bisphosphonates have shown clinical efficacy for preventing cancer treatment-induced bone loss and promise for reducing disease recurrence. For example, early studies of clodronate showed the potential for bisphosphonates to prevent bone metastases and prolong survival, but results with clodronate have been inconsistent. Recently, the more active bisphosphonate zoledronic acid (4 mg every 6 months) prevented bone loss and significantly reduced the risk of disease-free survival events by 36% (P = .01) compared with adjuvant endocrine therapy alone in a large phase III trial (N = 1,803) in premenopausal women with early breast cancer. Notably, these benefits were not limited to bone, because the addition of zoledronic acid reduced disease recurrence at all sites. Similarly, twice-yearly zoledronic acid has reduced disease recurrence in large phase III trials in more than 1,600 postmenopausal women with early breast cancer. Several ongoing trials (involving more than 20,000 patients altogether) are evaluating the efficacy of bisphosphonates for prevention of metastases in breast, prostate, and lung cancers; and multiple myeloma. Results from these studies are likely to expand the role of bisphosphonates, especially zoledronic acid, in the adjuvant therapy setting.
Keywords: Bisphosphonates, breast cancer, disease recurrence, lung cancer, multiple myeloma, prostate cancer, survival, zoledronic acid
Current Cancer Drug Targets
Title: Bisphosphonates in the Prevention of Disease Recurrence: Current Results and Ongoing Trials
Volume: 9 Issue: 7
Author(s): M. Gnant
Affiliation:
Keywords: Bisphosphonates, breast cancer, disease recurrence, lung cancer, multiple myeloma, prostate cancer, survival, zoledronic acid
Abstract: Bisphosphonates are the standard of care for preventing skeletal morbidity and treating hypercalcemia of malignancy in patients with bone metastases. Zoledronic acid (intravenous; 4 mg monthly) is approved to prevent skeletalrelated events (SREs) in patients with bone metastases from several tumor types, and can improve survival in some subsets of patients with skeletal metastases and high baseline bone turnover. In the adjuvant setting, bisphosphonates have shown clinical efficacy for preventing cancer treatment-induced bone loss and promise for reducing disease recurrence. For example, early studies of clodronate showed the potential for bisphosphonates to prevent bone metastases and prolong survival, but results with clodronate have been inconsistent. Recently, the more active bisphosphonate zoledronic acid (4 mg every 6 months) prevented bone loss and significantly reduced the risk of disease-free survival events by 36% (P = .01) compared with adjuvant endocrine therapy alone in a large phase III trial (N = 1,803) in premenopausal women with early breast cancer. Notably, these benefits were not limited to bone, because the addition of zoledronic acid reduced disease recurrence at all sites. Similarly, twice-yearly zoledronic acid has reduced disease recurrence in large phase III trials in more than 1,600 postmenopausal women with early breast cancer. Several ongoing trials (involving more than 20,000 patients altogether) are evaluating the efficacy of bisphosphonates for prevention of metastases in breast, prostate, and lung cancers; and multiple myeloma. Results from these studies are likely to expand the role of bisphosphonates, especially zoledronic acid, in the adjuvant therapy setting.
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Gnant M., Bisphosphonates in the Prevention of Disease Recurrence: Current Results and Ongoing Trials, Current Cancer Drug Targets 2009; 9 (7) . https://dx.doi.org/10.2174/156800909789760267
DOI https://dx.doi.org/10.2174/156800909789760267 |
Print ISSN 1568-0096 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-5576 |
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