Twenty-Four Month Extension Study of BA058-05-003 (Abaloparatide) in Participants With Osteoporosis

Phase 3

Completed

• Conditions: Postmenopausal Osteoporosis
• Interventions: Drug: Alendronate

• Registration Number: NCT01657162
• Lead Sponsor: Radius Health, Inc.

Brief Summary

The purpose of this study is to provide 24 months of standard of care data on participants previously enrolled in Study BA058-05-003 (NCT02653417).

Detailed Description

To assess the long-term effect of the anabolic drug, abaloparatide-subcutaneous (SC) versus placebo in the prevention of bone fracture after cessation of treatment. Participants who completed the 18-month Double-Blind BA058-05-003 (ACTIVE) study (NCT02653417), after receiving abaloparatide-SC or placebo, were enrolled in this extension study to receive 70 mg of alendronate (bisphosphonate) weekly for an additional 24 months. Complete details for Study BA058-05-003 are reported in the ClinicalTrials.gov Study Record NCT02653417.

Study Timeline

• Study First Submitted: 2012-07-31
• Study First Submitted QC: 2012-08-01
• Study First Posted: 2012-08-06
• Study Start: 2012-11-20
• Primary Completion: 2016-10-03
• Study Completion: 2016-10-03
• Results First Submitted: 2020-09-30
• Status Verified: 2020-11
• Results First Submitted QC: 2020-11-18
• Last Update Submitted: 2020-11-18
• Results First Posted: 2020-12-11
• Last Update Posted: 2020-12-11

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Female
• Target Recruitment: 1139

Inclusion Criteria

1. The participant was enrolled, randomized to either the abaloparatide-SC (BA058) or placebo arm, and successfully completed Study BA058-05-003 (NCT02653417).
2. The participant was no more than 40 days from End-of-Treatment (Month 18) in Study BA058-05-003 (NCT02653417).

Exclusion Criteria

1. Participants who were withdrawn from Study BA058-05-003 (NCT02653417) for any reason.
2. Participants who experienced a treatment-related serious adverse event (SAE) during Study BA058-05-003 (NCT02653417).

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Alendronate	Alendronate	Participants received 70 milligrams (mg) of alendronate orally once per week beginning on Day 2 for up to 24 months after participating in Study BA058-05-003 during which participants received abaloparatide 80 micrograms (mcg) SC or abaloparatide-matching placebo daily for 18 months.

Primary Outcome Measures

Name	Time	Method
Number of Participants With ≥1 New Vertebral Fracture Since Study BA058-05-003 Baseline	Study BA058-05-003 Baseline (Day 1) up to Study BA058-05-005 Month 6 (Study BA058-05-003 Month 25)	Vertebral fractures were determined clinically and via protocol directed radiograph evaluation. Complete results for Study BA058-05-003 are reported in the ClinicalTrials.gov Study Record NCT02653417.

Secondary Outcome Measures

Name	Time	Method
Percent Change From Study BA058-05-003 Baseline in Femoral Neck BMD at Study BA058-05-005 Month 6 (Study BA058-05-003 Month 25)	Study BA058-05-003 Baseline (Day 1), Study BA058-05-005 Month 6 (Study BA058-05-003 Month 25)	Femoral neck BMD were measured via DXA. Complete results for Study BA058-05-003 are reported in the ClinicalTrials.gov Study Record NCT02653417.
Percent Change From Study BA058-05-003 Baseline in Lumbar Spine BMD at Study BA058-05-005 Month 6 (Study BA058-05-003 Month 25)	Study BA058-05-003 Baseline (Day 1), Study BA058-05-005 Month 6 (Study BA058-05-003 Month 25)	Lumbar spine BMD were measured via DXA. Complete results for Study BA058-05-003 are reported in the ClinicalTrials.gov Study Record NCT02653417.
Kaplan-Meier Estimated Event Rate of the First Incident of Nonvertebral Fracture Since Study BA058-05-003 Baseline (Data From Studies BA058-05-005 and BA058-05-003 Combined)	Study BA058-05-003 Baseline (Day 1) up to Study BA058-05-005 Month 6 (Study BA058-05-003 Month 25)	Nonvertebral fractures were defined as clinical fractures that included: 1) those of the hip, wrist, forearm, shoulder, collar bone, upper arm, ribs, upper leg (not hip), knee, lower leg (not knee or ankle), foot, ankle, hand, pelvis (not hip), tailbone, and other; and 2) those associated with low trauma, defined as a fall from standing height or less; a fall on stairs, steps or curbs; a minimal trauma other than a fall; or moderate trauma other than a fall. Complete results for Study BA058-05-003 are reported in the ClinicalTrials.gov Study Record NCT02653417.
Number of Participants With Treatment Emergent Adverse Events (TEAEs) (Data From Study BA058-05-005 Only)	Study BA058-05-005 Baseline (Day 1) up to Study BA058-05-005 Month 24	A TEAE is any untoward medical occurrence or undesirable event(s) experienced in a participant that begins or worsens following administration of study drug, whether or not considered related to study drug by Investigator. A serious adverse event (SAE) was an adverse event (AE) resulting in any of the following outcomes or deemed significant for any other reason, death, initial or prolonged inpatient hospitalization, life-threatening experience (immediate risk of dying), congenital anomaly/birth defect, or persistent or significant disability/incapacity. Intensity for each AE was defined as mild, moderate, or severe. AEs included both SAEs and non-serious AEs. AEs whose causal relation was characterized as Possible or Probable were considered as related to study drug. AEs were coded using Medical Dictionary for Regulatory Activities (MedDRA). A summary of serious and all other non-serious adverse events, regardless of causality, is located in the Reported Adverse Events module.
Number of Participants With a Clinically Notable Serum Chemistry Laboratory Value (Data From Study BA058-05-005 Only)	Study BA058-05-005 Baseline (Day 1) up to Study BA058-05-005 Month 24	Serum Chemistry laboratory parameters that were evaluated via notable criteria (presented in parentheses) included: sodium (Low: ≤129; High: ≥148 milliequivalent per liter \[mEq/L\]), potassium (Low: ≤3.2; High: ≥5.5 mEq/L), albumin (\<2.5 grams \[g\]/deciliter \[dL\]), total protein (\<5 g/dL), glucose (Low: ≤54; High: \>125 mg/dL \[fasting\] or \>200 milligrams \[mg\]/dL \[random\]), creatinine (≥2.1 mg/dL), aspartate aminotransferase (AST) (≥5.1\*upper limit of normal \[ULN\]), alanine aminotransferase (ALT) (≥5.1\*ULN), alkaline phosphatase (AP) (≥3.1\*ULN), total bilirubin (≥1.51\*ULN \[with any increase in liver function tests\] ≥2.0\*ULN \[with normal liver function tests\]), creatine kinase (≥3.1\*ULN), total cholesterol (\>226 mg/dL), and total calcium (Low: ≤7.4; High: ≥11.6 mg/dL). Only the serum chemistry parameters with at least 1 participant with a notable laboratory value are presented.
Number of Participants With a Clinically Notable Coagulation Laboratory Value (Data From Study BA058-05-005 Only)	Study BA058-05-005 Baseline (Day 1) up to Study BA058-05-005 Month 24	Coagulation laboratory parameters that were evaluated via notable criteria (presented in parentheses) included: Activated Partial Thromboplastin Time (≥1.41\*ULN), Prothrombin Time (≥1.21\*ULN). Because the Activated Partial Thromboplastin Time was the only coagulation laboratory parameter with at least 1 participant with a notable laboratory value, this is the only parameter presented below.
Number of Participants With a Clinically Notable Urine Laboratory Value (Data From Study BA058-05-005 Only)	Study BA058-05-005 Baseline (Day 1) up to Study BA058-05-005 Month 24	Urine laboratory parameters that were evaluated via notable criteria (presented in parentheses) included: Glucose (2+), Protein (2+), Blood (\>50 red blood cells per high-power field \[rbc/hpf\]).
Number of Participants With a Clinically Notable Hematology Laboratory Value (Data From Study BA058-05-005 Only)	Study BA058-05-005 Baseline (Day 1) up to Study BA058-05-005 Month 24	Hematology laboratory parameters that were evaluated via notable criteria (presented in parentheses) included: Absolute Eosinophils (\>5000 cells/mm\^3), Absolute Lymphocytes (≤499 cells/mm\^3), Absolute Neutrophils (≤999 cells/mm\^3), % Eosinophils (\>50%), % Lymphocytes (≤5%), % Neutrophils (≤10%), Hemoglobin (Low: ≤9.4 g/dL; High: change from baseline ≥2.1 g/dL), Platelets (≤99000 cells/mm\^3), and White Blood Cells (Low: ≤1499 cells/mm\^3; High: ≥20001 cells/mm\^3). Only the hematology parameters with at least 1 participant with a notable laboratory value are presented.
Number of Participants With a Nonvertebral Fracture Since Study BA058-05-003 Baseline (Data From Studies BA058-05-005 and BA058-05-003 Combined)	Study BA058-05-003 Baseline (Day 1) up to Study BA058-05-005 Month 6 (Study BA058-05-003 Month 25)	Nonvertebral fractures were defined as clinical fractures that included: 1) those of the hip, wrist, forearm, shoulder, collar bone, upper arm, ribs, upper leg (not hip), knee, lower leg (not knee or ankle), foot, ankle, hand, pelvis (not hip), tailbone, and other; and 2) those associated with low trauma, defined as a fall from standing height or less; a fall on stairs, steps or curbs; a minimal trauma other than a fall; or moderate trauma other than a fall. Complete results for Study BA058-05-003 are reported in the ClinicalTrials.gov Study Record NCT02653417.
Percent Change From Study BA058-05-003 Baseline in Total Hip BMD at Study BA058-05-005 Month 6 (Study BA058-05-003 Month 25)	Study BA058-05-003 Baseline (Day 1), Study BA058-05-005 Month 6 (Study BA058-05-003 Month 25)	Total hip BMD were measured via DXA. Complete results for Study BA058-05-003 are reported in the ClinicalTrials.gov Study Record NCT02653417.