Safety Follow-up Study to Assess the Safety of Romosozumab in Children and Adolescents with Osteogenesis Imperfecta
- Trial ID
- 2023-503293-21-00
- Protocol
- 20220043
- Sponsor
- Amgen Inc.
Trial statistics
Diseases & Conditions
Objectives
The primary objective is to evaluate the safety of romosozumab in pediatric patients diagnosed with osteogenesis imperfecta who have previously completed Study 20200105. This assessment applies to participants regardless of whether they received the full protocol-specified dose of the investigational product or discontinued treatment early.
Participants
This clinical trial includes 39 participants diagnosed with osteogenesis imperfecta. The study population consists of both male and female patients, including vulnerable individuals. The cohort is composed of participants who were previously randomized to the romosozumab arm and completed the preceding study through the 15-month visit, regardless of whether the investigational product was administered until the final protocol-specified dose or discontinued early. Inclusion requires that informed consent or assent has been obtained from the participant or their legally authorized representative prior to the initiation of any study-specific procedures.
Plans and Procedures
This multicenter, phase 5 study is designed as a safety follow-up to assess the safety of romosozumab in children and adolescents previously diagnosed with osteogenesis imperfecta. The research methodology focuses on evaluating adverse events in participants who have completed a prior clinical trial, identified as Study 20200105. Eligible individuals include those who were randomized to the investigational product arm and completed the 15-month visit, regardless of whether they received the full course of the subcutaneous injection or discontinued treatment early. The study aims to monitor safety outcomes following the administration of romosozumab. Specific details regarding the sequence of study visits, total duration of participant involvement, and conditions for early termination are not provided.
Treatment
The investigational product is romosozumab, provided as a solution for injection. This medication is administered via subcutaneous injection using either a pre-filled syringe or a pre-filled pen. The dosage is 105 mg per administration.
Efficacy
The provided source material does not contain information regarding the assessment of efficacy. The study is designed to evaluate the safety of romosozumab in participants with osteogenesis imperfecta.
Inclusion and Exclusion Criteria
Inclusion Criteria
- 101 Participant has provided informed consent/assent prior to initiation of any study specific activities/procedures.
- 101 Participant’s legally authorized representative has provided informed consent when the participant is legally too young to provide informed consent, and the participant has provided written assent based on local regulations and/or guidelines prior to any study-specific activities/procedures being initiated.
- 102 Participant was randomized to the romosozumab arm and completed Study 20200105 through the Month 15 Visit, regardless of whether they received investigational product (romosozumab) until the last protocol-specified dose or ended investigational product early.
Exclusion Criteria
- 201 Currently receiving treatment in another investigational device or drug study, or less than 2 years since ending treatment on another investigational device or drug study(ies) with the exception of Study 20200105. Other investigational procedures while participating in this study are excluded.
- 202 Participant likely to not be available to complete all protocol-required study visits or procedures, and/or to comply with all required study procedures to the best of the participant and investigator’s knowledge.
Trial Status by Country
| Country | Status | Start of Recruitment | Planned Patients |
|---|---|---|---|
Austria | Not Yet Recruiting | 03 May 2026 | 3 |
Belgium | Not Yet Recruiting | 03 May 2026 | 2 |
Germany | Recruiting | 03 May 2026 | 12 |
Hungary | Not Yet Recruiting | 03 May 2026 | 5 |
Italy | Not Yet Recruiting | 03 May 2026 | 3 |
Slovakia | Not Yet Recruiting | 03 May 2026 | 2 |
Spain | Not Yet Recruiting | 03 May 2026 | 5 |
Sites & Investigators
Investigational Products
Details about the medicinal products being studied in this clinical trial.
| Product Name | Role in Trial | Formulation | Administration | Max Daily Dose | Treatment Duration | EU MP Number |
|---|---|---|---|---|---|---|
EVENITY 105 mg solution for injection in pre-filled syringe | Test | SOLUTION FOR INJECTION IN PRE-FILLED SYRINGE | SUBCUTANEOUS INJECTION | 00 | 9999 | PRD7764013 |
EVENITY 105 mg solution for injection in pre-filled pen | Test | SOLUTION FOR INJECTION IN PRE-FILLED PEN | SUBCUTANEOUS INJECTION | 00 | 9999 | PRD7764042 |
EVENITY 105 mg solution for injection in pre-filled syringe | Test | SOLUTION FOR INJECTION IN PRE-FILLED SYRINGE | SUBCUTANEOUS INJECTION | 00 | 9999 | PRD7763545 |
EVENITY 105 mg solution for injection in pre-filled pen | Test | SOLUTION FOR INJECTION IN PRE-FILLED PEN | SUBCUTANEOUS INJECTION | 00 | 9999 | PRD7764048 |







