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Study to Evaluate Romosozumab in Children and Adolescents With Osteogenesis Imperfecta

An Open-label, Ascending Multiple-dose Study to Evaluate Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Romosozumab in Children and Adolescents With Osteogenesis Imperfecta

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04545554
Enrollment
25
Registered
2020-09-11
Start date
2021-01-21
Completion date
2023-03-30
Last updated
2024-04-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Osteogenesis Imperfecta

Brief summary

The primary objective of this study is to evaluate the pharmacokinetics (PK) profile following multiple subcutaneous (SC) doses of romosozumab in children and adolescents with Osteogenesis Imperfecta (OI).

Interventions

DRUGRomosozumab

Participants will receive multiple doses of romosozumab via a SC injection.

DIETARY_SUPPLEMENTCalcium

All participants will receive daily supplements of elemental calcium.

DIETARY_SUPPLEMENTVitamin D

All participants will receive daily supplementation with vitamin D.

Sponsors

Amgen
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
5 Years to 17 Years
Healthy volunteers
No

Inclusion criteria

* Ambulatory male or female children 5 to less than 18 years of age upon entry into screening * Clinical diagnosis of OI defined as a clinical history consistent with type I-IV OI as determined by presence of expected phenotype and lack of additional features unrelated to type I-IV OI

Exclusion criteria

* History of an electrophoresis pattern inconsistent with type I to type IV OI * History of known mutation in a gene other than collagen type I alpha 1/collagen type I alpha 2 (COL1AI/COL1A2) causing OI or other metabolic bone disease * History of other bone diseases that affect bone metabolism (eg, osteoporosis pseudoglioma syndrome, idiopathic juvenile osteoporosis, osteopetrosis, hypophosphatasia) * History of Kawasaki disease, rheumatic myocarditis, ischemic cardiomyopathy, inherited cardiomyopathies, nephrotic syndrome, familial hypercholesterolemia, stroke, or any thromboembolic disorder * Unhealed fracture as defined by orthopedic opinion * Symptoms associated with skull abnormalities such as basilar invagination, basilar impression or Chiari malformation * Prior treatment with anti-sclerostin antibody, fluoride or strontium, parathyroid hormone (PTH) within 12 months prior to screening, denosumab within 12 months or zoledronic acid within 6 months prior to first dose * Less than 2 evaluable vertebrae by DXA evaluation in the region of interest, L1 - L4, as confirmed by the central imaging laboratory. * Clinically significant valvular heart disease based on local echocardiogram (ECHO) results.

Design outcomes

Primary

MeasureTime frameDescription
Maximum Observed Serum Concentration (Cmax) of RomosozumabSingle blood samples were taken on days 1, 8, 15, 29, 57, 64, 71, 85, 113, and 169 (end of study); pre-specified PK analysis took place on Days 1 and 57Mean Cmax values following Days 1 and 57 are presented.
Time to Cmax (Tmax) of RomosozumabSingle blood samples were taken on days 1, 8, 15, 29, 57, 64, 71, 85, 113, and 169 (end of study); pre-specified PK analysis took place on Days 1 and 57Median tmax values following Days 1 and 57 are presented.
Area Under the Serum Concentration Time Curve (AUC) From Time 0 to Day 28 (AUC[0-28]) of RomosozumabSingle blood samples were taken on days 1, 8, 15, 29, 57, 64, 71, and 85; pre-specified PK analysis took place on Days 1 and 57Mean AUC(0-28) values following Days 1 and 57 are presented.
Accumulation Ratio of RomosozumabSingle blood samples were taken on days 1, 8, 15, 29, 57, 64, 71, and 85; pre-specified PK analysis took place on Days 1 and 57The accumulation ratio was calculated as AUC(0-28) at Day 57/AUC(0-28) at Day 1. Mean accumulation ratio values based on analysis at Days 1 and 57 are presented, as pre-specified.
Terminal Half-life of RomosozumabSingle blood samples were taken on days 1, 8, 15, 29, 57, 64, 71, 85, 113, and 169 (end of study); pre-specified PK analysis took place on Day 57Median terminal half-life values at Day 57 are presented.

Secondary

MeasureTime frameDescription
Percentage Change From Baseline in Bone Mineral Density (BMD) of the Lumbar SpineDXA scans were during screening (baseline) and at Day 85 and Day 169BMD was assessed by dual energy X-ray absorptiometry (DXA) scans of the anteroposterior lumbar spine (L1 through L4) and analyzed by a central imaging laboratory. At least 2 lumbar vertebrae from L1 - L4 must be evaluable by DXA.
Percentage Change From Baseline in Bone Mineral Content (BMC) of the Lumbar SpineDXA scans were during screening (baseline) and at Day 85 and Day 169BMC was assessed by DXA scans of the anteroposterior lumbar spine (L1 through L4) and analyzed by a central imaging laboratory. At least 2 lumbar vertebrae from L1 - L4 must be evaluable by DXA.
Number of Participants With Treatment-Emergent Adverse Events (TEAEs)Day 1 to end of study (up to Day 169); median duration on study was 5.55 monthsTEAEs were adverse events (AEs) that started on or after first dose of investigational product up to the end of study (up to Day 169). Any clinically significant changes in vital signs, electrocardiogram parameters, physical exam findings, and clinical laboratory parameters were reported as TEAEs. Injection site reactions were events of interest (EOI) for this study.
Mean Change From Baseline in Lumbar Spine BMD Z-ScoreDXA scans were during screening (baseline) and at Day 85 and Day 169Lumbar spine BMD was assessed by DXA scans. The results were then converted to Z-scores. The Z-score indicated the number of standard deviations away from the reference population and a score of 0 is equal to the mean. Positive changes from baseline indicated an improvement in lumbar spine BMD.
Percentage Change From Baseline in Lumbar Spine Bone AreaDXA scans were during screening (baseline) and at Day 85 and Day 169Bone area was assessed by DXA scans of the anteroposterior lumbar spine (L1 through L4) and analyzed by a central imaging laboratory. At least 2 lumbar vertebrae from L1 - L4 must be evaluable by DXA.
Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Baseline (Day 1), Day 57, Day 85, and Day 169Facial nerve (cranial nerve VII) function was assessed clinically by facial symmetry inspection at rest, followed by assessment of the symmetry of specific facial movements: raising eyebrows, closing the eyes, blowing out the cheeks, smiling, pursing and closing the lips. Results of the cranial nerve examination were classed as 0 = Normal; 1 = Abnormal not clinically significant; and 2 = Abnormal clinically significant. An increase from baseline indicates an increase in abnormal clinical findings on the cranial nerve VII examination.
Number of Participants With Anti-romosozumab AntibodiesBlood samples for anti-romosozumab antibodies were taken Day 1, Day 15, Day 29, Day 85, and Day 169Treatment-boosted anti-romosozumab antibody was defined as binding antibody positive at baseline with a \>4 x increase in magnitude post-baseline. Transient results were defined as negative results at the participant's last time point tested within the study period.
Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Blood samples were taken Days 1 (baseline), 8, 15, 29, 57, 64, 71, 85, 113, and 169Serum concentrations of the bone turnover marker CTX were determined at pre-specified time points.
Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Blood samples were taken Days 1 (baseline), 8, 15, 29, 57, 64, 71, 85, 113, and 169Serum concentrations of the bone turnover marker P1NP were determined at pre-specified time points.

Countries

Austria, Germany, Greece, Hungary, Italy, Spain, Turkey (Türkiye), United States

Participant flow

Recruitment details

Participants were enrolled at 15 study centers in Austria, Germany, Greece, Hungary, Italy, Spain, Turkey, and the United States, and participated from 21 January 2021 until 30 March 2023.

Pre-assignment details

Ambulatory children (5 to \< 12 years of age) and adolescents (12 to \< 18 years of age) with osteogenesis imperfecta were enrolled to receive 1 of 3 subcutaneous (SC) dose levels of romosozumab. Specific doses are blinded due to the protection of propriety information.

Participants by arm

ArmCount
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)
Participants received multiple SC doses of romosozumab Dose A (low dose).
4
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)
Participants received multiple SC doses of romosozumab Dose A (low dose).
4
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)
Participants received multiple SC doses of romosozumab Dose B (medium dose).
4
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)
Participants received multiple SC doses of romosozumab Dose B (medium dose).
5
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)
Participants received multiple SC doses of romosozumab Dose C (high dose).
4
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)
Participants received multiple SC doses of romosozumab Dose C (high dose).
4
Total25

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005
Overall StudyWithdrawal by Subject000100

Baseline characteristics

CharacteristicCohort 1: Romosozumab Dose A (12 to < 18 Years of Age)TotalCohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)
Age, Continuous14.3 years
STANDARD_DEVIATION 1.9
10.5 years
STANDARD_DEVIATION 4
6.5 years
STANDARD_DEVIATION 0.6
14.0 years
STANDARD_DEVIATION 1.8
8.4 years
STANDARD_DEVIATION 2.4
14.3 years
STANDARD_DEVIATION 0.5
6.0 years
STANDARD_DEVIATION 1.4
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants3 Participants0 Participants1 Participants2 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
4 Participants22 Participants4 Participants3 Participants3 Participants4 Participants4 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race/Ethnicity, Customized
Asian
0 Participants1 Participants1 Participants0 Participants0 Participants0 Participants0 Participants
Race/Ethnicity, Customized
Other
0 Participants2 Participants1 Participants0 Participants1 Participants0 Participants0 Participants
Race/Ethnicity, Customized
White
4 Participants22 Participants2 Participants4 Participants4 Participants4 Participants4 Participants
Sex: Female, Male
Female
1 Participants9 Participants1 Participants2 Participants4 Participants1 Participants0 Participants
Sex: Female, Male
Male
3 Participants16 Participants3 Participants2 Participants1 Participants3 Participants4 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
deaths
Total, all-cause mortality
0 / 40 / 40 / 40 / 50 / 40 / 4
other
Total, other adverse events
1 / 40 / 42 / 44 / 51 / 43 / 4
serious
Total, serious adverse events
0 / 41 / 40 / 41 / 50 / 40 / 4

Outcome results

Primary

Accumulation Ratio of Romosozumab

The accumulation ratio was calculated as AUC(0-28) at Day 57/AUC(0-28) at Day 1. Mean accumulation ratio values based on analysis at Days 1 and 57 are presented, as pre-specified.

Time frame: Single blood samples were taken on days 1, 8, 15, 29, 57, 64, 71, and 85; pre-specified PK analysis took place on Days 1 and 57

Population: PK Analysis Set: all participants for whom at least 1 PK parameter or endpoint could be adequately tested.

ArmMeasureValue (MEAN)Dispersion
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Accumulation Ratio of Romosozumab0.885 ratioStandard Deviation 0.487
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Accumulation Ratio of Romosozumab3.6 ratioStandard Deviation 2.56
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Accumulation Ratio of Romosozumab0.922 ratioStandard Deviation 0.0673
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Accumulation Ratio of Romosozumab0.724 ratioStandard Deviation 0.392
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Accumulation Ratio of Romosozumab0.843 ratioStandard Deviation 0.26
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Accumulation Ratio of Romosozumab0.935 ratioStandard Deviation 0.283
Primary

Area Under the Serum Concentration Time Curve (AUC) From Time 0 to Day 28 (AUC[0-28]) of Romosozumab

Mean AUC(0-28) values following Days 1 and 57 are presented.

Time frame: Single blood samples were taken on days 1, 8, 15, 29, 57, 64, 71, and 85; pre-specified PK analysis took place on Days 1 and 57

Population: PK Analysis Set: all participants for whom at least 1 PK parameter or endpoint could be adequately tested.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Area Under the Serum Concentration Time Curve (AUC) From Time 0 to Day 28 (AUC[0-28]) of RomosozumabDay 130.9 day*μg/mLStandard Deviation 13.5
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Area Under the Serum Concentration Time Curve (AUC) From Time 0 to Day 28 (AUC[0-28]) of RomosozumabDay 5727.4 day*μg/mLStandard Deviation 15.1
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Area Under the Serum Concentration Time Curve (AUC) From Time 0 to Day 28 (AUC[0-28]) of RomosozumabDay 116.9 day*μg/mLStandard Deviation 5.78
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Area Under the Serum Concentration Time Curve (AUC) From Time 0 to Day 28 (AUC[0-28]) of RomosozumabDay 5750.5 day*μg/mLStandard Deviation 20.7
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Area Under the Serum Concentration Time Curve (AUC) From Time 0 to Day 28 (AUC[0-28]) of RomosozumabDay 1163 day*μg/mLStandard Deviation 89.1
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Area Under the Serum Concentration Time Curve (AUC) From Time 0 to Day 28 (AUC[0-28]) of RomosozumabDay 57153 day*μg/mLStandard Deviation 86.7
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Area Under the Serum Concentration Time Curve (AUC) From Time 0 to Day 28 (AUC[0-28]) of RomosozumabDay 1113 day*μg/mLStandard Deviation 50.3
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Area Under the Serum Concentration Time Curve (AUC) From Time 0 to Day 28 (AUC[0-28]) of RomosozumabDay 5795.1 day*μg/mLStandard Deviation 76.1
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Area Under the Serum Concentration Time Curve (AUC) From Time 0 to Day 28 (AUC[0-28]) of RomosozumabDay 1344 day*μg/mLStandard Deviation 106
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Area Under the Serum Concentration Time Curve (AUC) From Time 0 to Day 28 (AUC[0-28]) of RomosozumabDay 57293 day*μg/mLStandard Deviation 134
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Area Under the Serum Concentration Time Curve (AUC) From Time 0 to Day 28 (AUC[0-28]) of RomosozumabDay 1234 day*μg/mLStandard Deviation 93.7
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Area Under the Serum Concentration Time Curve (AUC) From Time 0 to Day 28 (AUC[0-28]) of RomosozumabDay 57203 day*μg/mLStandard Deviation 40.7
Primary

Maximum Observed Serum Concentration (Cmax) of Romosozumab

Mean Cmax values following Days 1 and 57 are presented.

Time frame: Single blood samples were taken on days 1, 8, 15, 29, 57, 64, 71, 85, 113, and 169 (end of study); pre-specified PK analysis took place on Days 1 and 57

Population: Pharmacokinetic (PK) Analysis Set: all participants for whom at least 1 PK parameter or endpoint could be adequately tested.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Maximum Observed Serum Concentration (Cmax) of RomosozumabDay 12.64 μg/mLStandard Deviation 1.06
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Maximum Observed Serum Concentration (Cmax) of RomosozumabDay 572.43 μg/mLStandard Deviation 1.36
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Maximum Observed Serum Concentration (Cmax) of RomosozumabDay 11.74 μg/mLStandard Deviation 0.825
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Maximum Observed Serum Concentration (Cmax) of RomosozumabDay 575.55 μg/mLStandard Deviation 2.11
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Maximum Observed Serum Concentration (Cmax) of RomosozumabDay 113.8 μg/mLStandard Deviation 6.32
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Maximum Observed Serum Concentration (Cmax) of RomosozumabDay 5712.8 μg/mLStandard Deviation 6.31
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Maximum Observed Serum Concentration (Cmax) of RomosozumabDay 110.3 μg/mLStandard Deviation 1.7
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Maximum Observed Serum Concentration (Cmax) of RomosozumabDay 579.14 μg/mLStandard Deviation 7.5
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Maximum Observed Serum Concentration (Cmax) of RomosozumabDay 125.7 μg/mLStandard Deviation 3.02
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Maximum Observed Serum Concentration (Cmax) of RomosozumabDay 5722.8 μg/mLStandard Deviation 10.5
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Maximum Observed Serum Concentration (Cmax) of RomosozumabDay 121.3 μg/mLStandard Deviation 6.45
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Maximum Observed Serum Concentration (Cmax) of RomosozumabDay 5719.4 μg/mLStandard Deviation 2.14
Primary

Terminal Half-life of Romosozumab

Median terminal half-life values at Day 57 are presented.

Time frame: Single blood samples were taken on days 1, 8, 15, 29, 57, 64, 71, 85, 113, and 169 (end of study); pre-specified PK analysis took place on Day 57

Population: PK Analysis Set: all participants for whom at least 1 PK parameter or endpoint could be adequately tested. Data is presented for participants with evaluable data.

ArmMeasureValue (MEDIAN)
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Terminal Half-life of Romosozumab9.41 day
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Terminal Half-life of Romosozumab7.01 day
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Terminal Half-life of Romosozumab6.11 day
Primary

Time to Cmax (Tmax) of Romosozumab

Median tmax values following Days 1 and 57 are presented.

Time frame: Single blood samples were taken on days 1, 8, 15, 29, 57, 64, 71, 85, 113, and 169 (end of study); pre-specified PK analysis took place on Days 1 and 57

Population: PK Analysis Set: all participants for whom at least 1 PK parameter or endpoint could be adequately tested.

ArmMeasureGroupValue (MEDIAN)
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Time to Cmax (Tmax) of RomosozumabDay 577.0 day
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Time to Cmax (Tmax) of RomosozumabDay 16.5 day
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Time to Cmax (Tmax) of RomosozumabDay 17.9 day
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Time to Cmax (Tmax) of RomosozumabDay 577.0 day
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Time to Cmax (Tmax) of RomosozumabDay 16.9 day
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Time to Cmax (Tmax) of RomosozumabDay 577.0 day
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Time to Cmax (Tmax) of RomosozumabDay 16.9 day
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Time to Cmax (Tmax) of RomosozumabDay 578.0 day
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Time to Cmax (Tmax) of RomosozumabDay 17.0 day
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Time to Cmax (Tmax) of RomosozumabDay 577.0 day
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Time to Cmax (Tmax) of RomosozumabDay 17.5 day
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Time to Cmax (Tmax) of RomosozumabDay 577.5 day
Secondary

Mean Change From Baseline in Lumbar Spine BMD Z-Score

Lumbar spine BMD was assessed by DXA scans. The results were then converted to Z-scores. The Z-score indicated the number of standard deviations away from the reference population and a score of 0 is equal to the mean. Positive changes from baseline indicated an improvement in lumbar spine BMD.

Time frame: DXA scans were during screening (baseline) and at Day 85 and Day 169

Population: The BMD Analysis Set: all participants who have a baseline lumbar spine DXA BMD measurement and at least 1 post-baseline lumbar spine DXA BMD measurement. Participants with data available at each time point are presented.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Mean Change From Baseline in Lumbar Spine BMD Z-ScoreDay 850.20 Z-scoreStandard Deviation 0.39
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Mean Change From Baseline in Lumbar Spine BMD Z-ScoreDay 1690.33 Z-scoreStandard Deviation 0.46
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Mean Change From Baseline in Lumbar Spine BMD Z-ScoreDay 850.45 Z-scoreStandard Deviation 0.37
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Mean Change From Baseline in Lumbar Spine BMD Z-ScoreDay 1690.48 Z-scoreStandard Deviation 0.51
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Mean Change From Baseline in Lumbar Spine BMD Z-ScoreDay 850.50 Z-scoreStandard Deviation 0.12
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Mean Change From Baseline in Lumbar Spine BMD Z-ScoreDay 1690.48 Z-scoreStandard Deviation 0.21
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Mean Change From Baseline in Lumbar Spine BMD Z-ScoreDay 850.33 Z-scoreStandard Deviation 0.53
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Mean Change From Baseline in Lumbar Spine BMD Z-ScoreDay 1690.25 Z-scoreStandard Deviation 0.39
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Mean Change From Baseline in Lumbar Spine BMD Z-ScoreDay 850.33 Z-scoreStandard Deviation 0.26
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Mean Change From Baseline in Lumbar Spine BMD Z-ScoreDay 1690.23 Z-scoreStandard Deviation 0.56
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Mean Change From Baseline in Lumbar Spine BMD Z-ScoreDay 850.53 Z-scoreStandard Deviation 0.79
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Mean Change From Baseline in Lumbar Spine BMD Z-ScoreDay 1690.50 Z-scoreStandard Deviation 0.62
Secondary

Number of Participants With Anti-romosozumab Antibodies

Treatment-boosted anti-romosozumab antibody was defined as binding antibody positive at baseline with a \>4 x increase in magnitude post-baseline. Transient results were defined as negative results at the participant's last time point tested within the study period.

Time frame: Blood samples for anti-romosozumab antibodies were taken Day 1, Day 15, Day 29, Day 85, and Day 169

Population: Safety Analysis Set: all participants enrolled in the study who received at least 1 dose of investigational product.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesNeutralizing antibody positive post-baseline with a negative/no result at baseline0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesTransient neutralizing antibody positive post-baseline with a negative/no result at baseline0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesBinding antibody positive at/before baseline0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesBinding antibody positive post-baseline with negative/no results at baseline0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesTransient binding antibody positive post-baseline with negative/no results at baseline0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesTreatment-boosted antibody positive0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesNeutralizing antibody positive anytime0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesBinding antibody positive anytime0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesNeutralizing antibody positive at/before baseline0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesTransient neutralizing antibody positive post-baseline with a negative/no result at baseline0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesBinding antibody positive post-baseline with negative/no results at baseline1 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesNeutralizing antibody positive anytime0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesBinding antibody positive at/before baseline0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesBinding antibody positive anytime1 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesNeutralizing antibody positive post-baseline with a negative/no result at baseline0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesNeutralizing antibody positive at/before baseline0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesTransient binding antibody positive post-baseline with negative/no results at baseline0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesTreatment-boosted antibody positive0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesNeutralizing antibody positive anytime2 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesBinding antibody positive post-baseline with negative/no results at baseline2 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesNeutralizing antibody positive at/before baseline0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesNeutralizing antibody positive post-baseline with a negative/no result at baseline2 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesTransient neutralizing antibody positive post-baseline with a negative/no result at baseline0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesBinding antibody positive at/before baseline0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesTransient binding antibody positive post-baseline with negative/no results at baseline0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesTreatment-boosted antibody positive0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesBinding antibody positive anytime2 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesBinding antibody positive post-baseline with negative/no results at baseline0 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesBinding antibody positive anytime0 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesNeutralizing antibody positive anytime0 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesBinding antibody positive at/before baseline0 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesNeutralizing antibody positive at/before baseline0 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesTreatment-boosted antibody positive0 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesTransient binding antibody positive post-baseline with negative/no results at baseline0 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesNeutralizing antibody positive post-baseline with a negative/no result at baseline0 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesTransient neutralizing antibody positive post-baseline with a negative/no result at baseline0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesTreatment-boosted antibody positive0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesNeutralizing antibody positive at/before baseline0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesTransient binding antibody positive post-baseline with negative/no results at baseline0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesBinding antibody positive at/before baseline0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesTransient neutralizing antibody positive post-baseline with a negative/no result at baseline0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesNeutralizing antibody positive post-baseline with a negative/no result at baseline1 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesNeutralizing antibody positive anytime1 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesBinding antibody positive anytime1 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Anti-romosozumab AntibodiesBinding antibody positive post-baseline with negative/no results at baseline1 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesBinding antibody positive anytime1 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesNeutralizing antibody positive at/before baseline0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesBinding antibody positive post-baseline with negative/no results at baseline1 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesTransient neutralizing antibody positive post-baseline with a negative/no result at baseline0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesNeutralizing antibody positive post-baseline with a negative/no result at baseline0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesTransient binding antibody positive post-baseline with negative/no results at baseline0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesBinding antibody positive at/before baseline0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesTreatment-boosted antibody positive0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Anti-romosozumab AntibodiesNeutralizing antibody positive anytime0 Participants
Secondary

Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169

Facial nerve (cranial nerve VII) function was assessed clinically by facial symmetry inspection at rest, followed by assessment of the symmetry of specific facial movements: raising eyebrows, closing the eyes, blowing out the cheeks, smiling, pursing and closing the lips. Results of the cranial nerve examination were classed as 0 = Normal; 1 = Abnormal not clinically significant; and 2 = Abnormal clinically significant. An increase from baseline indicates an increase in abnormal clinical findings on the cranial nerve VII examination.

Time frame: Baseline (Day 1), Day 57, Day 85, and Day 169

Population: Safety Analysis Set: all participants enrolled in the study who received at least 1 dose of investigational product. Participants with data available at each time point are presented.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Blowing out of cheeks - No change (0)4 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Blowing out of cheeks - Undetermined0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing eyes - No change (0)4 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing eyes - Undetermined0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing of lips - No change (0)4 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing of lips - Undetermined0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Pursing of lips - No change (0)4 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Pursing of lips - Undetermined0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Raising eyebrows - No change (0)4 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Raising eyebrows - Undetermined0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Smiling - No change (0)4 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Smiling - Undetermined0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Blowing out of cheeks - No change (0)4 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Blowing out of cheeks - Undetermined0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing eyes - No change (0)4 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing eyes - Undetermined0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing of lips - No change (0)4 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing of lips - Increase (to 1)0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing of lips - Undetermined0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Pursing of lips - No change (0)4 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Pursing of lips - Undetermined0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Raising eyebrows - No change (0)4 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Raising eyebrows - Undetermined0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Smiling - No change (0)4 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Smiling - Undetermined0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Blowing out of cheeks - No change (0)4 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Blowing out of cheeks - Undetermined0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing eyes - No change (0)4 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing eyes - Undetermined0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing of lips - No change (0)4 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing of lips - Undetermined0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Pursing of lips - No change (0)4 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Pursing of lips - Undetermined0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Raising eyebrows - No change (0)4 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Raising eyebrows - Undetermined0 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Smiling - No change (0)4 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Smiling - Undetermined0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Pursing of lips - No change (0)4 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Smiling - Undetermined0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing eyes - Undetermined0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Pursing of lips - No change (0)4 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Smiling - No change (0)4 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Raising eyebrows - Undetermined0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Pursing of lips - Undetermined0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Raising eyebrows - Undetermined0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Raising eyebrows - Undetermined0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Raising eyebrows - No change (0)4 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing of lips - Undetermined0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Smiling - Undetermined0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Smiling - No change (0)4 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Pursing of lips - Undetermined0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing eyes - No change (0)4 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Pursing of lips - No change (0)4 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Smiling - Undetermined0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Blowing out of cheeks - Undetermined0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Blowing out of cheeks - No change (0)4 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Blowing out of cheeks - No change (0)4 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing of lips - Undetermined0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Blowing out of cheeks - Undetermined0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing of lips - No change (0)4 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Raising eyebrows - No change (0)4 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing eyes - No change (0)4 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing of lips - No change (0)4 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing eyes - Undetermined0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing eyes - Undetermined0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Pursing of lips - Undetermined0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing eyes - No change (0)4 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Raising eyebrows - No change (0)4 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing of lips - No change (0)3 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Blowing out of cheeks - Undetermined0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing of lips - Increase (to 1)1 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Smiling - No change (0)4 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Blowing out of cheeks - No change (0)4 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing of lips - Undetermined0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Blowing out of cheeks - No change (0)4 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Smiling - Undetermined0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Pursing of lips - No change (0)4 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing of lips - Undetermined0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing eyes - No change (0)4 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Pursing of lips - No change (0)4 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Pursing of lips - Undetermined0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Smiling - No change (0)4 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Smiling - Undetermined0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Blowing out of cheeks - No change (0)4 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Blowing out of cheeks - Undetermined0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Pursing of lips - Undetermined0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing of lips - No change (0)4 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Raising eyebrows - Undetermined0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing of lips - No change (0)4 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Raising eyebrows - Undetermined0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing of lips - Increase (to 1)0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Raising eyebrows - No change (0)4 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing eyes - Undetermined0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Raising eyebrows - Undetermined0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing of lips - Undetermined0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Pursing of lips - No change (0)4 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing eyes - No change (0)4 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing of lips - No change (0)4 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing eyes - No change (0)4 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Smiling - No change (0)4 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Raising eyebrows - No change (0)4 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing eyes - Undetermined0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Smiling - No change (0)4 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Blowing out of cheeks - Undetermined0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Raising eyebrows - No change (0)4 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Smiling - Undetermined0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Pursing of lips - Undetermined0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Blowing out of cheeks - Undetermined0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Blowing out of cheeks - No change (0)4 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing eyes - Undetermined0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing of lips - Undetermined0 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Raising eyebrows - No change (0)4 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Pursing of lips - No change (0)3 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Pursing of lips - Undetermined2 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Raising eyebrows - No change (0)3 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Raising eyebrows - Undetermined2 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Pursing of lips - Undetermined1 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Smiling - No change (0)3 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Smiling - Undetermined2 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Blowing out of cheeks - No change (0)4 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Blowing out of cheeks - Undetermined1 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing eyes - No change (0)4 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing eyes - Undetermined1 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Raising eyebrows - No change (0)4 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing of lips - No change (0)4 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing of lips - Increase (to 1)0 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing of lips - Undetermined1 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Smiling - Undetermined1 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Pursing of lips - No change (0)4 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Pursing of lips - Undetermined1 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Raising eyebrows - Undetermined1 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Raising eyebrows - Undetermined1 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Smiling - No change (0)4 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Smiling - Undetermined1 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Blowing out of cheeks - No change (0)4 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Blowing out of cheeks - Undetermined1 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing eyes - No change (0)4 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Smiling - No change (0)4 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing eyes - Undetermined1 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing of lips - No change (0)4 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing of lips - Undetermined1 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Blowing out of cheeks - No change (0)3 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Blowing out of cheeks - Undetermined2 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing eyes - No change (0)3 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing eyes - Undetermined2 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Pursing of lips - No change (0)4 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing of lips - No change (0)3 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing of lips - Undetermined2 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing eyes - No change (0)4 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Smiling - Undetermined0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Blowing out of cheeks - No change (0)4 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing of lips - Increase (to 1)0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Raising eyebrows - No change (0)4 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing of lips - Undetermined0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Blowing out of cheeks - Undetermined0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing of lips - No change (0)4 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing eyes - Undetermined0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Smiling - Undetermined0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Pursing of lips - Undetermined0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing eyes - No change (0)4 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing eyes - Undetermined0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Smiling - No change (0)4 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Blowing out of cheeks - Undetermined0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing of lips - No change (0)4 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing of lips - No change (0)4 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Blowing out of cheeks - No change (0)4 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing of lips - Undetermined0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Pursing of lips - No change (0)4 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Blowing out of cheeks - No change (0)4 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Smiling - Undetermined0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Pursing of lips - Undetermined0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Blowing out of cheeks - Undetermined0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Smiling - No change (0)4 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Pursing of lips - No change (0)4 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing eyes - No change (0)4 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Raising eyebrows - Undetermined0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Raising eyebrows - No change (0)4 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Pursing of lips - Undetermined0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Raising eyebrows - No change (0)4 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Raising eyebrows - Undetermined0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Raising eyebrows - Undetermined0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Pursing of lips - No change (0)4 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Smiling - No change (0)4 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing of lips - Undetermined0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing eyes - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing of lips - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Smiling - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Pursing of lips - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Raising eyebrows - No change (0)4 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing of lips - Increase (to 1)0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing eyes - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Smiling - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Blowing out of cheeks - No change (0)4 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Pursing of lips - No change (0)4 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Raising eyebrows - No change (0)4 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing of lips - No change (0)4 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Blowing out of cheeks - No change (0)4 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Smiling - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Blowing out of cheeks - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Raising eyebrows - No change (0)4 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing eyes - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Pursing of lips - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Pursing of lips - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Pursing of lips - No change (0)4 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing eyes - No change (0)4 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Raising eyebrows - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing eyes - No change (0)4 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Blowing out of cheeks - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing of lips - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Smiling - No change (0)4 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing eyes - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Pursing of lips - No change (0)4 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Blowing out of cheeks - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Raising eyebrows - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Closing of lips - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Raising eyebrows - Undetermined0 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Closing of lips - No change (0)4 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 169: Smiling - No change (0)4 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Blowing out of cheeks - No change (0)4 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing eyes - No change (0)4 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 57: Closing of lips - No change (0)4 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Changes From Baseline in Cranial Nerve VII Examination Findings at Day 57, Day 85, and Day 169Day 85: Smiling - No change (0)4 Participants
Secondary

Number of Participants With Treatment-Emergent Adverse Events (TEAEs)

TEAEs were adverse events (AEs) that started on or after first dose of investigational product up to the end of study (up to Day 169). Any clinically significant changes in vital signs, electrocardiogram parameters, physical exam findings, and clinical laboratory parameters were reported as TEAEs. Injection site reactions were events of interest (EOI) for this study.

Time frame: Day 1 to end of study (up to Day 169); median duration on study was 5.55 months

Population: Safety Analysis Set: all participants enrolled in the study who received at least 1 dose of investigational product.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE1 Participants
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Number of Participants With Treatment-Emergent Adverse Events (TEAEs)Any Treatment-emergent EOI0 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE1 Participants
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Number of Participants With Treatment-Emergent Adverse Events (TEAEs)Any Treatment-emergent EOI0 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE2 Participants
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Number of Participants With Treatment-Emergent Adverse Events (TEAEs)Any Treatment-emergent EOI0 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE4 Participants
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Number of Participants With Treatment-Emergent Adverse Events (TEAEs)Any Treatment-emergent EOI0 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE1 Participants
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Number of Participants With Treatment-Emergent Adverse Events (TEAEs)Any Treatment-emergent EOI1 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Treatment-Emergent Adverse Events (TEAEs)Any TEAE3 Participants
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Number of Participants With Treatment-Emergent Adverse Events (TEAEs)Any Treatment-emergent EOI1 Participants
Secondary

Percentage Change From Baseline in Bone Mineral Content (BMC) of the Lumbar Spine

BMC was assessed by DXA scans of the anteroposterior lumbar spine (L1 through L4) and analyzed by a central imaging laboratory. At least 2 lumbar vertebrae from L1 - L4 must be evaluable by DXA.

Time frame: DXA scans were during screening (baseline) and at Day 85 and Day 169

Population: The BMD Analysis Set: all participants who have a baseline lumbar spine DXA BMD measurement and at least 1 post-baseline lumbar spine DXA BMD measurement. Participants with data available at each time point are presented.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Bone Mineral Content (BMC) of the Lumbar SpineDay 857.68 percentage changeStandard Deviation 8.1
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Bone Mineral Content (BMC) of the Lumbar SpineDay 16912.64 percentage changeStandard Deviation 4.07
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Bone Mineral Content (BMC) of the Lumbar SpineDay 8510.13 percentage changeStandard Deviation 6.05
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Bone Mineral Content (BMC) of the Lumbar SpineDay 16911.40 percentage changeStandard Deviation 7.82
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Bone Mineral Content (BMC) of the Lumbar SpineDay 8518.16 percentage changeStandard Deviation 7.86
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Bone Mineral Content (BMC) of the Lumbar SpineDay 16921.29 percentage changeStandard Deviation 11.31
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Bone Mineral Content (BMC) of the Lumbar SpineDay 858.41 percentage changeStandard Deviation 6.9
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Bone Mineral Content (BMC) of the Lumbar SpineDay 1697.98 percentage changeStandard Deviation 7.77
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Bone Mineral Content (BMC) of the Lumbar SpineDay 8514.62 percentage changeStandard Deviation 3.39
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Bone Mineral Content (BMC) of the Lumbar SpineDay 16914.27 percentage changeStandard Deviation 5.52
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Bone Mineral Content (BMC) of the Lumbar SpineDay 8516.03 percentage changeStandard Deviation 8.32
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Bone Mineral Content (BMC) of the Lumbar SpineDay 16912.42 percentage changeStandard Deviation 10.72
Secondary

Percentage Change From Baseline in Bone Mineral Density (BMD) of the Lumbar Spine

BMD was assessed by dual energy X-ray absorptiometry (DXA) scans of the anteroposterior lumbar spine (L1 through L4) and analyzed by a central imaging laboratory. At least 2 lumbar vertebrae from L1 - L4 must be evaluable by DXA.

Time frame: DXA scans were during screening (baseline) and at Day 85 and Day 169

Population: The BMD Analysis Set: all participants who have a baseline lumbar spine DXA BMD measurement and at least 1 post-baseline lumbar spine DXA BMD measurement. Participants with data available at each time point are presented.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Bone Mineral Density (BMD) of the Lumbar SpineDay 854.84 percentage changeStandard Deviation 3.29
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Bone Mineral Density (BMD) of the Lumbar SpineDay 1697.80 percentage changeStandard Deviation 2.23
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Bone Mineral Density (BMD) of the Lumbar SpineDay 857.94 percentage changeStandard Deviation 5.32
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Bone Mineral Density (BMD) of the Lumbar SpineDay 1699.24 percentage changeStandard Deviation 7.98
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Bone Mineral Density (BMD) of the Lumbar SpineDay 8512.91 percentage changeStandard Deviation 2.6
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Bone Mineral Density (BMD) of the Lumbar SpineDay 16915.04 percentage changeStandard Deviation 4.32
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Bone Mineral Density (BMD) of the Lumbar SpineDay 857.78 percentage changeStandard Deviation 9.16
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Bone Mineral Density (BMD) of the Lumbar SpineDay 1697.09 percentage changeStandard Deviation 7.03
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Bone Mineral Density (BMD) of the Lumbar SpineDay 857.88 percentage changeStandard Deviation 1.99
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Bone Mineral Density (BMD) of the Lumbar SpineDay 1697.10 percentage changeStandard Deviation 6.58
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Bone Mineral Density (BMD) of the Lumbar SpineDay 8513.07 percentage changeStandard Deviation 13.45
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Bone Mineral Density (BMD) of the Lumbar SpineDay 16912.70 percentage changeStandard Deviation 12.86
Secondary

Percentage Change From Baseline in Lumbar Spine Bone Area

Bone area was assessed by DXA scans of the anteroposterior lumbar spine (L1 through L4) and analyzed by a central imaging laboratory. At least 2 lumbar vertebrae from L1 - L4 must be evaluable by DXA.

Time frame: DXA scans were during screening (baseline) and at Day 85 and Day 169

Population: The BMD Analysis Set: all participants who have a baseline lumbar spine DXA BMD measurement and at least 1 post-baseline lumbar spine DXA BMD measurement.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Lumbar Spine Bone AreaDay 1694.53 percentage changeStandard Deviation 4.92
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Lumbar Spine Bone AreaDay 852.72 percentage changeStandard Deviation 6.99
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Lumbar Spine Bone AreaDay 852.03 percentage changeStandard Deviation 1.62
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Lumbar Spine Bone AreaDay 1691.92 percentage changeStandard Deviation 0.66
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Lumbar Spine Bone AreaDay 854.60 percentage changeStandard Deviation 5
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Lumbar Spine Bone AreaDay 1695.30 percentage changeStandard Deviation 6.06
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Lumbar Spine Bone AreaDay 850.80 percentage changeStandard Deviation 4.62
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Lumbar Spine Bone AreaDay 1690.82 percentage changeStandard Deviation 1.95
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Lumbar Spine Bone AreaDay 856.23 percentage changeStandard Deviation 2.15
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Lumbar Spine Bone AreaDay 1696.87 percentage changeStandard Deviation 5.14
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Lumbar Spine Bone AreaDay 169-0.09 percentage changeStandard Deviation 4.27
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Lumbar Spine Bone AreaDay 853.44 percentage changeStandard Deviation 11.05
Secondary

Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)

Serum concentrations of the bone turnover marker P1NP were determined at pre-specified time points.

Time frame: Blood samples were taken Days 1 (baseline), 8, 15, 29, 57, 64, 71, 85, 113, and 169

Population: PD Analysis Set: all participants for whom at least 1 PD parameter or endpoint could be adequately estimated. Participants with data available at each time point are presented.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 113-1.13 percentage changeStandard Deviation 13.42
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 169-6.62 percentage changeStandard Deviation 30.96
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 295.24 percentage changeStandard Deviation 12.87
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 7112.19 percentage changeStandard Deviation 21.37
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 85-7.34 percentage changeStandard Deviation 22.5
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 6414.82 percentage changeStandard Deviation 28.86
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 1511.03 percentage changeStandard Deviation 13.94
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 819.81 percentage changeStandard Deviation 20.96
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 57-2.11 percentage changeStandard Deviation 20.26
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 169-3.13 percentage changeStandard Deviation 10.54
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 71-5.72 percentage changeStandard Deviation 28.5
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 1512.43 percentage changeStandard Deviation 13.07
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 296.18 percentage changeStandard Deviation 18.64
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 812.75 percentage changeStandard Deviation 13.03
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 113-13.75 percentage changeStandard Deviation 19.11
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 57-22.37 percentage changeStandard Deviation 19.82
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 85-23.50 percentage changeStandard Deviation 13.42
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 6419.12 percentage changeStandard Deviation 40.48
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 1552.25 percentage changeStandard Deviation 29.71
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 7149.37 percentage changeStandard Deviation 37.99
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 5714.57 percentage changeStandard Deviation 36.09
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 11321.10 percentage changeStandard Deviation 40.61
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 16918.10 percentage changeStandard Deviation 57.53
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 2921.52 percentage changeStandard Deviation 25.01
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 8526.12 percentage changeStandard Deviation 48.97
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 6439.63 percentage changeStandard Deviation 31.92
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 865.12 percentage changeStandard Deviation 17.75
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 7116.79 percentage changeStandard Deviation 12.29
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 831.77 percentage changeStandard Deviation 11.69
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 1510.52 percentage changeStandard Deviation 14.72
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 291.96 percentage changeStandard Deviation 9.22
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 57-6.36 percentage changeStandard Deviation 17.51
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 6425.42 percentage changeStandard Deviation 16.73
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 85-0.72 percentage changeStandard Deviation 21.29
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 1132.53 percentage changeStandard Deviation 42.46
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 169-2.24 percentage changeStandard Deviation 23.99
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 6477.17 percentage changeStandard Deviation 109.07
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 5719.07 percentage changeStandard Deviation 56.24
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 855.79 percentage changeStandard Deviation 23.45
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 2932.13 percentage changeStandard Deviation 59.1
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 169-14.30 percentage changeStandard Deviation 19.41
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 113-5.02 percentage changeStandard Deviation 21
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 1558.58 percentage changeStandard Deviation 54.61
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 835.91 percentage changeStandard Deviation 21.89
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 7142.16 percentage changeStandard Deviation 59.39
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 835.35 percentage changeStandard Deviation 47.08
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 57-14.26 percentage changeStandard Deviation 12.93
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 715.12 percentage changeStandard Deviation 29.54
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 169-21.85 percentage changeStandard Deviation 16.18
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 113-26.95 percentage changeStandard Deviation 10.23
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 85-11.78 percentage changeStandard Deviation 30.09
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 29-11.54 percentage changeStandard Deviation 11.35
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 6417.51 percentage changeStandard Deviation 35.74
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Procollagen Type 1 N-terminal Propeptide (P1NP)Day 1528.35 percentage changeStandard Deviation 55
Secondary

Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)

Serum concentrations of the bone turnover marker CTX were determined at pre-specified time points.

Time frame: Blood samples were taken Days 1 (baseline), 8, 15, 29, 57, 64, 71, 85, 113, and 169

Population: PD Analysis Set: all participants for whom at least 1 PD parameter or endpoint could be adequately estimated. Participants with data available at each time point are presented.

ArmMeasureGroupValue (MEAN)Dispersion
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 113-3.83 percentage changeStandard Deviation 22.3
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 169-6.15 percentage changeStandard Deviation 54.87
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 29-4.67 percentage changeStandard Deviation 21.35
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 7118.20 percentage changeStandard Deviation 53.85
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 85-10.56 percentage changeStandard Deviation 22.18
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 64-13.37 percentage changeStandard Deviation 36.33
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 1512.26 percentage changeStandard Deviation 28.2
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 82.65 percentage changeStandard Deviation 27.91
Cohort 1: Romosozumab Dose A (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 571.03 percentage changeStandard Deviation 34.14
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 169-29.78 percentage changeStandard Deviation 31.6
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 71-25.30 percentage changeStandard Deviation 50.43
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 15-3.24 percentage changeStandard Deviation 41.3
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 29-6.67 percentage changeStandard Deviation 39.99
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 8-19.93 percentage changeStandard Deviation 33.97
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 113-30.38 percentage changeStandard Deviation 19.59
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 57-7.34 percentage changeStandard Deviation 25.32
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 85-37.50 percentage changeStandard Deviation 14.12
Cohort 2: Romosozumab Dose A (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 64-18.26 percentage changeStandard Deviation 49.19
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 15-2.14 percentage changeStandard Deviation 52.91
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 7135.26 percentage changeStandard Deviation 68.16
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 57-0.32 percentage changeStandard Deviation 32.21
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 11325.94 percentage changeStandard Deviation 39.76
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 169-1.72 percentage changeStandard Deviation 40.42
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 2926.00 percentage changeStandard Deviation 15.11
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 859.95 percentage changeStandard Deviation 30.71
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 6419.91 percentage changeStandard Deviation 43.95
Cohort 3: Romosozumab Dose B (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 88.79 percentage changeStandard Deviation 19.21
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 71-3.37 percentage changeStandard Deviation 8.25
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 8-19.38 percentage changeStandard Deviation 20.01
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 15-20.24 percentage changeStandard Deviation 21.12
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 29-7.43 percentage changeStandard Deviation 18.63
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 57-7.66 percentage changeStandard Deviation 13.16
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 64-10.60 percentage changeStandard Deviation 36.12
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 855.08 percentage changeStandard Deviation 24.34
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 1136.98 percentage changeStandard Deviation 37.98
Cohort 4: Romosozumab Dose B (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 16911.08 percentage changeStandard Deviation 16.19
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 6410.95 percentage changeStandard Deviation 23.38
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 57-1.40 percentage changeStandard Deviation 38.1
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 850.71 percentage changeStandard Deviation 44.55
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 29-16.09 percentage changeStandard Deviation 27.05
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 169-8.07 percentage changeStandard Deviation 16.73
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 1137.03 percentage changeStandard Deviation 40.23
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 15-17.22 percentage changeStandard Deviation 17.39
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 8-12.33 percentage changeStandard Deviation 12.93
Cohort 5: Romosozumab Dose C (12 to < 18 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 7115.14 percentage changeStandard Deviation 51.39
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 87.14 percentage changeStandard Deviation 29.89
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 5744.17 percentage changeStandard Deviation 95.3
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 7160.12 percentage changeStandard Deviation 106.28
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 1698.08 percentage changeStandard Deviation 49.45
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 113-19.58 percentage changeStandard Deviation 10.98
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 8515.77 percentage changeStandard Deviation 58.4
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 293.76 percentage changeStandard Deviation 24.72
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 64-28.14 percentage changeStandard Deviation 11.51
Cohort 6: Romosozumab Dose C (5 to < 12 Years of Age)Percentage Change From Baseline in Serum Concentrations of Serum Type 1 Collagen C-Telopeptide (CTX)Day 1542.62 percentage changeStandard Deviation 54.95

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026