Bone involvement is a significant complication of metastatic cancer that occurs in up to 95% of multiple myeloma patients, up to 75% of breast and prostate cancer patients, and 15%-40% of patients with primary lung, colon, or kidney tumors [1,2]. Bone metastases cause considerable morbidity, including severe pain, immobility and disability, pathologic fractures, life-threatening hypercalcemia, and spinal cord compression. These problems have a major impact on patient quality of life. The spread of tumor cells to bone normally signifies that the cancer is incurable with, for example, only 20% of breast cancer patients alive at 5 years after the initial diagnosis [1]. The primary treatment goal for metastatic bone disease is therefore to alleviate symptoms and enable patients to continue with a normal life for as long as possible.Bisphosphonates are the standard of care for treating metastatic bone disease. These agents inhibit the function of osteoclasts, which are bone-resorbing cells essential for bone remodeling [3]. The presence of tumor metastasis in bone tissue results in excessive osteoclast activity with consequent destruction of bone architecture and loss of structural integrity. Bisphosphonates have the potential to prevent bone complications, and current recommendations suggest that all