Brittle bone kids: is romosozumab safe Long-Term?
NCT ID NCT07366086
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study follows children and teens with osteogenesis imperfecta (brittle bone disease) who previously received romosozumab in an earlier trial. Researchers will monitor 71 participants for side effects over time. The goal is to see if the drug is safe for long-term use in this young population.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- romosozumab
- What this could lead to
- If successful, this could confirm that romosozumab is safe for long-term use in children with brittle bone disease, potentially leading to a new treatment option.
- What could go wrong
- This is a follow-up safety study, not a test of effectiveness. It is small (71 participants) and only includes those who already tolerated the drug, so results may not apply to all patients.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 3
Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.
- Participants
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About 71 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Mar 2026
- Expected to finish
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Apr 2028
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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5 to 19 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: \- Participant has provided informed consent/assent prior to initiation of any trial specific activities/procedures. OR 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 trial-specific activities/procedures being initiated. \- Participant was randomized to the romosozumab arm and completed Trial 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: * Currently receiving treatment in another investigational device or drug trial, or less than 2 years since ending treatment on another investigational device or drug trial(ies) with the exception of trial 20200105. Other investigational procedures while participating in this trial are excluded. * Participant likely to not be available to complete all protocol-required trial visits or procedures, and/or to comply with all required trial procedures to the best of the participant and investigator's knowledge.
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Get notified about this study
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Genom att skicka in godkänner du våra Användarvillkor
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The study's own enquiry address
This study publishes an address for enquiries. See it below .
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The places running it
4 sites in 3 countries. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Show contact details
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Genom att skicka in godkänner du våra Användarvillkor
Study contacts
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Contact
Email: •••••@•••••
Locations
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Indiana University
RECRUITINGIndianapolis, Indiana, 46202, United States
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Okayama Saiseikai Outpatient Center Hospital
RECRUITINGOkayama, Okayama-ken, 700-0013, Japan
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Universitaetsklinikum Koeln
RECRUITINGCologne, 50937, Germany
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Universitaetsklinikum Wuerzburg
RECRUITINGWürzburg, 97074, Germany
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Other studies related to the condition(s) this trial covers.
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- Wearable sensors shed light on movement in brittle bone disease
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