 THAR2011-1 is a Phase I, single dose, open-label dose-escalation study to determine the safety, absolute bioavailability, dose proportionality, and pharmacokinetics of T121 in healthy postmenopausal women. The study is expected to identify a safe dose that can be further tested in subsequent multiple dose studies comparing the safety, PK and pharmacodynamics PD of T121 with the currently marketed IV zoledronic acid Zometa. 