Primary
1. To determine if denosumab is non-inferior to zoledronic acid (Zometa.) with respect to the first on-study occurrence of a skeletal related event (SRE) in subjects with advanced cancer and bone metastases (or lytic bone lesions from multiple myeloma). SRE is defined as pathologic fracture (vertebral or non-vertebral), radiation therapy to bone (including the use of radioisotopes), surgery to bone, or spinal cord compression
Secondary
1. To determine if denosumab is superior to zoledronic acid with respect to the first on-study SRE
2. To determine if denosumab is superior to zoledronic acid with respect to the first-and-subsequent on-study SRE (multiple event analysis)
3. To assess the safety and tolerability of denosumab compared with zoledronic acid
Exploratory
1. To compare the treatment effect of denosumab with zoledronic acid on the first on-study occurrence of an SRE or hypercalcemia of malignancy (HCM)
2. To compare the treatment effect of denosumab with zoledronic acid on the first on-study use of radiation to bone
3. To compare the treatment effect of denosumab with zoledronic acid on analgesic use
4. To evaluate the treatment effects of denosumab and zoledronic acid on other clinical outcomes (ie, overall survival, progression of disease in bone, and overall progression of disease)
5. To evaluate the proportions of subjects who have a documented SRE by 49 wks and by the primary analysis data cut off date.
6. To compare the treatment effect of denosumab with zoledronic acid on pain
7. To evaluate treatment effects on healthcare utilization and patient reported outcomes (PROs) including scales from the Brief Pain Inventory-Short Form (BPI-SF) (pain severity and pain interference), scales from the Functional Assessment of Cancer Therapy-General (FACT-G), (total score, physical well being, functional well being, social/family well being, and emotional well being) and utility score from the EuroQol-5 Dimensions (EQ-5D)
9. To measure serum (trough) concentrations of denosumab.
10. Percent change in bone turnover markers (BTM). |