A Study to Examine the Effects of an Experimental Drug on Women With Breast Cancer and Metastatic Bone Disease (MBD)(0822-016)(COMPLETED)

A Phase II Study to Assess the Safety, Tolerability, and Efficacy of MK-0822 (Cathepsin-K Inhibitor) in the Treatment of Women With Breast Cancer and Established Bone Metastases (MBD)

This is a 4-week study to examine the effects of a new experimental medication on women with breast cancer and established bone metastases. This study will enroll approximately 45 women. The primary hypotheses are: (1) odanacatib will result in a substantial suppression of urinary N-telopeptide of type I collagen (u-NTx) similar to that achieved with an intravenous (IV) infusion of zoledronic acid (ZA) over 4 weeks of treatment; and (2) odanacatib (MK-0822) will be safe and well tolerated during 4 weeks of treatment.

Inclusion Criteria:

• Patient has histologically or cytologically-confirmed breast cancer
• Patient has documented skeletal metastases

Exclusion Criteria:

• Patient is undergoing current oral bisphosphonate therapy, or has a history of oral bisphosphonate use within 6 months of entry into study