A First-in-human Study Evaluating AMG 167 in Healthy Men and Postmenopausal Women

A Randomized, Double-blind, Placebo-controlled, Ascending Single-dose Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of AMG 167 in Healthy Men and Postmenopausal Women

The primary objective of this study is to determine the safety and tolerability of AMG 167 following a single dose subcutaneous (SC) or intravenous (IV) administration in healthy men and postmenopausal women.

Inclusion Criteria:

• Healthy males and females between 45 to 65 years of age
• Postmenopausal females defined as 12 continuous months of spontaneous amenorrhea confirmed by a serum follicle-stimulating hormone (FSH) result > 40mIU/mL, or at least 6 weeks postsurgical bilateral oophorectomy (with or without hysterectomy)
• Men must agree to use highly effective methods of contraception; males must agree to not donate sperm for the entire study and 7 months after the end of treatment
• Weight ≤ 98 kg (216 lb) and/or height ≤ 196 cm (77 in)
• Has no history or evidence of a clinically significant disorder, condition or disease that would pose a risk to subject safety or interfere with the study evaluation, procedures or completion
• Negative urine screen for potential drugs of abuse at screening and admission, unless medication is prescribed by a physician

Exclusion Criteria:

• Healthy males with partners who are pregnant at the time of screening; or healthy males with partners who plan to become pregnant during the study
• Osteoporosis, as defined by BMD t-scores of the lumbar spine (L1-L4) or total evaluable vertebrae; or femoral neck ≤ 2.5
• Diagnosed with any condition that will affect bone metabolism
• Diagnosis of clotting factor deficiency or history of bleeding or coagulation disorder (including history of heparin or warfarin administration)
• Subjects with fewer than 2 evaluable vertebrae; metal in hips bilaterally that would not allow for at least one evaluable hip; metal in forearms bilaterally that would not allow for at least one evaluable forearm
• Abnormal international normalized ratio or partial thromboplastin time
• Administration of the following medications within 6 months before study drug administration:
• Hormone replacement therapy [Infrequent use of estrogen vaginal creams (< 3 times per week) is allowed.]
• Calcitonin
• Parathyroid hormone (or any derivative)
• Supplemental Vitamin D > 1,000 IU/day
• Glucocorticosteroids (inhaled or topical corticosteroids administered more than 2 weeks before the enrollment date are allowed)
• Anabolic steroids
• Calcitriol, and available analogues
• Administration of the following medications within 12 months before study drug administration:
• Bisphosphonates
• Fluoride for osteoporosis
• Administration of herbal medications within 2 weeks or 5 half-lives (whichever is longer) before study drug administration
• Greatly differing levels of physical activity or constant levels of intense physical exercise during the 6 months before study drug administration
• Known alcohol abuse or use of illicit drugs within 12 months of admission
• Unwilling or unable to limit alcohol consumption throughout the course of the study
• Known sensitivity to mammalian-derived drug preparations
• Known to be hepatitis B surface antigen, hepatitis C virus, or human immunodeficiency virus positive, or a known diagnosis of acquired immunodeficiency syndrome
• An unstable medical condition, defined as having been hospitalized within 28 days before day -1, major surgery within 6 months before day -1, or otherwise unstable in the judgment of the investigator
• Has any clinically significant abnormality during the screening physical examination, ECG, or laboratory evaluation
• Unavailable for follow-up assessment or any concerns for subject's compliance with the protocol procedures
• Any other condition that might reduce the chance of obtaining data required by the protocol or that might compromise the ability to give truly informed consent
• Has participated in another clinical study within 4 weeks of screening or within 5 times the half-life of the investigational agent in the other clinical study, if known
• Has donated or lost 400 mL or more of blood or plasma within 8 weeks of study drug administration
• Previous exposure to AMG 785