Conditions: Osteoporosis
Keywords: Bone Mineral Density (BMD) C-Telopeptides (CTx) dual x-ray absorptiometry (DXA) pro-collagen type 1 N-propeptide (P1NP) teriparatide zoledronic acid Osteoporosis postmenopausal women
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 412
Healthy volunteers: no

Brief summary:
The purpose of this study is to assess the effects of zoledronic acid administered at the same time with teriparatide compared to zoledronic acid alone and teriparatide alone on bone mineral density (BMD) gain in the lumbar spine and total hip

Detailed description:

Arms:
arm 1: Zoledronic acid 5.0 mg/100 mL was administered via a peripheral intravenous site at Visit 2 (once at randomization) as a slow 15-minute infusion. Teriparatide is supplied as sterile, colorless clear, isotonic solution in a glass cartridge which is pre-assembled into a disposable pen device for subcutaneous injection. The pen device delivers 20 μg of teriparatide concurrently as daily subcutaneous injections for 52 weeks. arm 2: Zoledronic acid 5.0 mg/100 mL was administered via a peripheral intravenous site at Visit 2 (once at randomization) as a slow 15-minute infusion. arm 3: Placebo zoledronic acid 100 mL intravenous (i.v.) (once at randomization) plus teriparatide 20 μg (daily subcutaneous injections administered concurrently through 52 weeks). Teriparatide is supplied as sterile, colorless clear, isotonic solution in a glass cartridge which is pre-assembled into a disposable pen device for subcutaneous injection. The pen device delivers 20 μg of teriparatide concurrently as daily subcutaneous injections for 52 weeks.

Interventions: intervention 1: Zoledronic acid intervention 2: Placebo intervention 3: Teriparatide
Intervention descriptions: intervention 1: Zoledronic acid 5.0 mg in a ready-to-infuse plastic bottle with a total fill volume of 103 mL to allow an infusion of 100 mL total volume corresponding to 5 mg of zoledronic acid. intervention 2: Zoledronic acid matched placebo as a 103 mL solution of sterile water (physiologic 0.9% normal saline) to allow an infusion of 100 mL total volume in a ready-to-infuse plastic bottle intervention 3: Teriparatide is supplied as sterile, colorless clear, isotonic solution in a glass cartridge which is pre-assembled into a disposable pen device for subcutaneous injection. Each pre-filled delivery device is filled with 3.3 mL to deliver 3 mL.

Each mL contains 250 μg teriparatide (corrected for acetate, chloride, and water content), 0.41 mg glacial acetate acid, 0.10 mg sodium acetate (anhydrous), 45.4 mg mannitol, 3.0 mg Metacresol, and water for injection. In addition, hydrochloric acid solution 10% and/or sodium hydroxide solution 10% may have been added to adjust the product to pH 4. Each cartridge pre-assembled into a pen device delivers 20 μg of teriparatide per dose each day for up to 28 days.

Protocol document: