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Romosozumab Prefilled Syringe

Phase 3

Bone Density, Low | Small molecule | Endocrine |Amgen Inc.|Last Updated: Feb 27, 2026

Target and mechanism

Molecular targetSOST
Target classInhibitor
ModalitySmall molecule

Also known as Romosozumab Prefilled Syringe [Evenity], Romosozumab

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment30

FDA Designations

No designations recorded

Clinical trial landscape

Romosozumab Prefilled Syringe · 2 trials · 5 indications

Phase 3 1Phase 2 1
NCT04779216Effects of Romosozumab on Bone Density in Women With Anorexia NervosaBone Density, Low
COMPLETED30 Analytics
PHASE3COMPLETED
Effects of Romosozumab on Bone Density in Women With Anorexia Nervosa
Bone Density, LowUnlock trial analytics

Study Endpoints

Primary Endpoints

Percent Change From Baseline to 12 Months in Postero-anterior Lumbar Spine Bone Mineral Density by Dual Energy X-ray Absorptiometry (DXA).
Baseline to 12 Months

Percent change from baseline to 12 months in postero-anterior lumbar spine bone mineral density by dual energy x-ray absorptiometry (DXA).

Percent change in lumbar spine BMD by DXA
Baseline-12 months

Within-group percent change in lumbar spine BMD by DXA at 12M

Secondary Endpoints

Percent Change From Baseline to 24 Months in Postero-anterior Lumbar Spine BMD.
Baseline to 24 Months
Percent change in lumbar spine BMD by DXA
Baseline, 6 month, 12 month, 18 month, 24 month
Percent change in total hip BMD by DXA
Baseline, 6 month, 12 month, 18 month, 24 month
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Active Romosozumab 210mg InjectionEXPERIMENTALRomosozumab 210mg injection monthly for 12 months. A single infusion of open-label zoledronic acid 5 mg after the initial 12-month administration of romosozumab.
PlaceboPLACEBO_COMPARATORPlacebo injection monthly for 12 months. A single infusion of open-label zoledronic acid 5 mg after the initial 12-month administration of placebo.
Romosozumab followed by denosumabEXPERIMENTALRomosozumab 210 mg subcutaneous injection, once a month for 12 months followed by denosumab 60 mg subcutaneous injection, once every six months for 12 months.

Interventions

NameTypeDescription
Romosozumab Prefilled SyringeDRUGRomosozumab 210mg Injection monthly for 12 months
PlaceboDRUGPlacebo Injection monthly for 12 months
Zoledronic acid 5 mgDRUGA single infusion of open-label zoledronic acid 5 mg after the initial 12-month administration of romosozumab or placebo
Romosozumab Prefilled Syringe [Evenity]DRUG2 syringes of 105 MG/1.17 mL subcutaneous solution injected one after the other, once a month from study baseline through 11 month visit
Denosumab 60 MG/ML Prefilled Syringe [Prolia]DRUG1 subcutaneous injection of 60 mg/mL every six months from study 12 month visit through the 24 month visit. Injections occur at the 12 and 18 month visits.
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Eligibility Criteria

Age Range20 Years to 60 Years
SexFEMALE
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: * Female * Age 20-60 years, skeletally mature with closed epiphyses * Body mass index (BMI) ≥ 16.5 kg/m2 * Anorexia nervosa or atypical anorexia nervosa defined by DSM-V diagnostic criteria * BMD Z-score \< -1.0 * Normal serum 25-OH vitamin D (\>30 ng/mL) and calcium levels * Fo...

Countries:United States
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Frequently asked questions about Romosozumab Prefilled Syringe

What is Romosozumab used for?

Romosozumab is a monoclonal antibody being developed for musculoskeletal conditions including postmenopausal osteoporosis, osteogenesis imperfecta, osteopenia, and premenopausal idiopathic osteoporosis. It is currently in Phase 2 clinical development for premenopausal idiopathic osteoporosis, with earlier studies completed in osteopenia.

Who makes Romosozumab?

Romosozumab is developed by Amgen Inc., traded on NASDAQ under the ticker AMGN. The company is conducting clinical trials to evaluate the drug for osteoporosis-related conditions.

What phase is Romosozumab in?

Romosozumab is in Phase 2 clinical development. One active Phase 2 trial is studying the drug in premenopausal idiopathic osteoporosis, while three Phase 1 trials have been completed in osteopenia. It is investigational and not yet approved.

What clinical trials is Romosozumab in?

Romosozumab has four clinical trials. The active Phase 2 trial is NCT04800367 for premenopausal idiopathic osteoporosis. Completed Phase 1 trials include NCT00950950, NCT01059435, and NCT01101061, all studying osteopenia in postmenopausal women or healthy participants.

Is Romosozumab the same as Evenity?

Romosozumab is also known as Romosozumab Prefilled Syringe [Evenity] and Romosozumab Prefilled Syringe. These names refer to the same drug product, which is being developed by Amgen for osteoporosis-related conditions.