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Brittle bone kids: is romosozumab safe Long-Term?

NCT ID NCT07366086

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

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

Phase 3

Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.

Participants

About 71 people

The number the study aims to enrol. It can still change while the study runs.

Started

Mar 2026

Expected to finish

Apr 2028

An estimate. End dates often move.

Lead sponsor

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

5 to 19 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

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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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.

  1. The study's own enquiry address

    This study publishes an address for enquiries. See it below .

  2. The places running it

    4 sites in 3 countries. The list below names each one and where it is.

  3. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  4. 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

Study contacts

  • Contact

    Email: •••••@•••••

Locations

  • Indiana University

    RECRUITING

    Indianapolis, Indiana, 46202, United States

  • Okayama Saiseikai Outpatient Center Hospital

    RECRUITING

    Okayama, Okayama-ken, 700-0013, Japan

  • Universitaetsklinikum Koeln

    RECRUITING

    Cologne, 50937, Germany

  • Universitaetsklinikum Wuerzburg

    RECRUITING

    Würzburg, 97074, Germany

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