A Double-Blind, Randomized, Repeat Dose, Parallel Group Study of Recombinant Human Parathyroid Hormone (rhPTH(1-31)NH2) tablets, or Placebo tablets, Compared to Open Label Forteo in Postmenopausal Women with Osteoporosis

Recruitment & Eligibility

Status: ot Recruiting

Sex: Female

Target Recruitment: 93

Inclusion Criteria

•Informed Consent: Provide written informed consent before initiation of any study related procedures.
•Ambulatory postmenopausal women in good health. Menopausal status: Patient should be at least 5 years postmenopausal which can be =5 years of spontaneous amenorrhea or =5 years postsurgical bilateral oophorectomy. Use follicle stimulation hormone (FSH) levels >40 mIU/mL to confirm surgical postmenopausal status where bilateral oophorectomy status is uncertain.
•Age = 45 years, =80 years.
•BMD Values: Diagnosis of osteoporosis on the basis of an axial lumbar spine, femoral neck or total hip BMD which is below the mean for premenopausal women by a magnitude of at least 2.5 SD or 2.0 SD, if there is a documented (x-ray) history of a vertebral fragility fracture.
•Suitable Vertebrae: Two or more vertebrae in the range of L1 to L4 that are suitable for BMD measurement by DXA.
•No clinically significant abnormal findings in the medical history or physical examination.
- Negative screen for Hepatitis B and C, HIV and drugs of abuse at screening.
•Laboratory Values:
- Total serum Ca, albumin-adjusted Ca, P, and Mg++ within normal range.
- No clinically significant abnormal laboratory values at the screening assessment.

Are the trial subjects under 18? no
Number of subjects for this age range:
F.1.2 Adults (18-64 years) yes
F.1.2.1 Number of subjects for this age range
F.1.3 Elderly (>=65 years) yes
F.1.3.1 Number of subjects for this age range

Exclusion Criteria

•BMI =33 kg/m2
•Illnesses:
- Liver function: Known hepatic or biliary abnormalities including Gilbert's syndrome.
- Clinically significant abnormal liver function tests (ALT, AST, GGT, alkaline phosphatase, total bilirubin).
- Abnormal kidney function tests: Creatinine clearance =30 ml/min; urinary calcium/creatinine ratio greater than 1.1 mmol/mmol on second morning voided specimen; or serum creatinine concentration exceeding 2 mg per deciliter (177 µmol per liter
- Medical illness: Presence of acute or chronic illness or history of chronic illness which, in the judgment of the Investigator, makes participation in the study medically inappropriate.
- History of pancreatitis, osteosarcoma, gout, or kidney stones (calcium oxalate or calcium phosphate).
- Uncontrolled hypertension, significant gastrointestinal abnormalities, uncontrolled diabetes mellitus, any psychotic mental illness, uncorrected endocrine dysfunction, or significantly impaired respiratory or renal function.
- Medical conditions which might alter bone metabolism, including: hyperparathyroidism, hypoparathyroidism, untreated hyperthyroidism, untreated hypothyroidism, Paget's disease, myeloma, malabsorption, Cushing's syndrome, hypocalcemia, hypercalcemia, hypophosphatemia, hyperphosphatemia, hypomagnesemia, hypermagnesemia, osteopetrosis, osteomalacia, rheumatoid arthritis and recent (within one year) history of non-traumatic fracture or prolonged bed rest.
- History of musculoskeletal disease. However, patients with conditions such as fibromyalgia, osteoarthritis, and degenerative disc disease may be enrolled at the discretion of the Investigator and Medical Monitor.
- History of cancer within 5 years of enrollment other than basal cell carcinoma and carcinoma in situ.
•History of clinically significant Cardiovascular Disease and/or Postural Hypotension:
- QT/QTc prolongation: A marked baseline prolongation of QT/QTc interval (e.g., QTc interval > 450 msec on the screening ECG).
- Torsades des Pointes: A history of risk factors for Torsades de Pointes (e.g., heart failure, hypokalemia, family history of Long QT Syndrome).
•Electrocardiogram: Any clinically relevant abnormality identified on the 12-lead surface electrocardiogram (ECG).
•History of Surgery within 60 days of enrollment.
•Evidence of Alcohol or Substance Abuse that the Investigator believes would interfere with understanding or completing the study.
•Laboratory Findings:
- Albumin-adjusted serum calcium greater or less than 10% of the normal reference range of the analytical laboratory.
- Urine calcium greater than the normal reference range of the laboratory.
- PTH(1-84) greater than the normal reference range of the analytical laboratory.
- Abnormal Alkaline Phosphatase.
- Vitamin D: Vitamin D insufficiency defined as a 25 hydroxyvitamin D level <15 ng/mL.
•DXA:
- Any condition or disease that may interfere with the ability to have a DXA scan or to evaluate a DXA scan, for example, spinal fusion, pedicle screws, history of vertebroplasty, or degenerative disease that results in insufficient number of evaluable lumbar vertebrae, or more than 1 lumbar vertebral fracture in L1 through L4.
- Bilateral hip replacements.
•Contraindicated Medications: Contraindicated medications are defined in Table 4 2.
•Osteosarcoma Risk: Patients at increased risk of osteosarcoma such as those with Paget’s disease of bone or any prior external beam or implant radiation therapy involving the skeleton.
•Contraindications: Con

Study & Design

Study Type: Interventional clinical trial of medicinal product

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method

Secondary Outcome Measures

Name	Time	Method

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