Safety and Tolerability of Odanacatib (0822-059)

uNTx/Cr is a biomarker of bone resorption. Urine samples were obtained predose on Day 1 (Baseline) and at various timepoints up to 336 hr postdose on Day 22 (Week 4). Fold change from baseline in time weighted average (TWA) of uNTx/Cr on log scale was analyzed via a linear mixed effect model. All analyses were carried out on the log-fold scale and final results were reported on the original percent scale in WAI after back transformation. The conversion used was weighted average inhibition (WAI) = (1-exp [mean])*100, where the mean was the least squares (LS) mean of log-transformed ratio (TWA/baseline) from the above model.

Blood samples were obtained predose on Day 1 (Baseline) and at various timepoints up to 336 hr postdose on Day 22 (Week 4) to determine the similarity of steady-state AUC0-168 hr of odanacatib 50 mg administered Qw for 4 weeks in healthy males and postmenopausal females. Characterization of AUC0-168hr after administration of the final, Qw dose of Odanacatib 50 mg at steady state is reflective of the clinical dosing interval.

Blood samples were obtained predose on Day 1 (Baseline) and at various timepoints up to 336 hr postdose on Day 22 (Week 4) to determine the similarity of steady-state Cmax of odanacatib 50 mg administered Qw for 4 weeks in healthy males and postmenopausal females.

Blood samples were obtained at 168 hours postdose on Day 22 (Week 4) to determine the similarity of steady-state C168hr (trough concentrations) of odanacatib 50 mg administered Qw for 4 weeks in healthy males and postmenopausal females.

Blood samples were obtained predose on Day 1 (Baseline) and at various timepoints up to 336 hr postdose on Day 22 (Week 4) to determine the similarity of steady-state Tmax of odanacatib 50 mg administered Qw for 4 weeks in healthy males and postmenopausal females.

Blood samples were obtained predose on Day 1 (Baseline) and at various timepoints up to 336 hr postdose on Day 22 (Week 4) to determine the similarity of the apparent t1/2 of odanacatib 50 mg administered Qw for 4 weeks in healthy males and postmenopausal females. Harmonic mean, jack-knife standard deviation reported for apparent terminal t1/2.

An AE is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the SPONSOR's product, whether or not considered related to the use of the product. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a pre-existing condition which is temporally associated with the use of the SPONSOR's product, is also an AE. The study determined if the number of AEs experienced by participants receiving Odanacatib 50 mg Qw for 4 consecutive weeks was sufficiently low to permit continued clinical investigation. In addition to AEs during the treatment period and post-treatment follow-up period, AEs may have occurred prior to treatment in screened participants as a result of urine and blood sampling at Baseline.

An AE is defined as any unfavorable and unintended change in the structure, function, or chemistry of the body temporally associated with the use of the SPONSOR's product, whether or not considered related to the use of the product. Any worsening (i.e., any clinically significant adverse change in frequency and/or intensity) of a pre-existing condition which is temporally associated with the use of the SPONSOR's product, is also an AE. The study determined if the number of participants who discontinued treatment with Odanacatib 50 mg Qw for 4 consecutive weeks due to AEs was sufficiently low to permit continued clinical investigation.