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A Study to Document and to Further Describe Long-term Safety and Effectiveness of Palovarotene in Participants With Fibrodysplasia Ossificans Progressiva (FOP)
MinorSecondary endpoints: details revised at 11 of 29 entriesEligibility criteria expanded, about 5 wordsShow 1 more changeShow less
Eligibility criteria expanded, about 5 words
MinorRe-verified, no change to tracked fieldsv27
MinorSite details revised at 1 of 5 sitesv26
Minor2 versionsRe-verified since Apr 29, 2026, no change to tracked fieldsv24-v25
MinorSite details revised at 2 of 5 sitesv23
Show 21 earlier versionsHide 21 earlier versions
MinorRe-verified, no change to tracked fieldsv22
MinorSite details revised at 3 of 5 sitesv21
Minor3 versionsRe-verified since Oct 29, 2025, no change to tracked fieldsv18-v20
NotablePrimary completion date: Dec 31, 2033 to Dec 5, 2035Enrollment target: 70 to 100 · Study sites: 3 to 5 · Completion date: Jan 31, 2034 to Dec 5, 2035 · 1 morev17Show 4 more changesShow less
Minor7 versionsRe-verified since Jan 31, 2025, no change to tracked fieldsv10-v16
NotableTrial status: Not Yet Recruiting to RecruitingPrimary completion date: Dec 31, 2035 to Dec 31, 2033 · Study sites: 0 to 3 · Completion date: Dec 31, 2035 to Jan 31, 2034 · 1 morev9Show 4 more changesShow less
Primary completion date: Dec 31, 2035 to Dec 31, 2033
Study sites: 0 to 3
Completion date: Dec 31, 2035 to Jan 31, 2034
Start date changed from estimate of Dec 31, 2024 to Dec 5, 2024
MinorRe-verified, no change to tracked fieldsv8
NotablePrimary completion date: Dec 31, 2033 to Dec 31, 2035Start date: Sep 30, 2024 to Dec 31, 2024 · Completion date: Jan 31, 2034 to Dec 31, 2035v7Show 2 more changesShow less
Start date: Sep 30, 2024 to Dec 31, 2024
Completion date: Jan 31, 2034 to Dec 31, 2035
NotableStart date: Jul 15, 2024 to Sep 30, 2024v6
NotableStart date: Apr 15, 2024 to Jul 15, 2024v5
MinorPrimary completion date: Dec 2033 to Dec 31, 2033Completion date: Jan 2034 to Jan 31, 2034v4Show 1 more changeShow less
Completion date: Jan 2034 to Jan 31, 2034
MinorStart date: Mar 2024 to Apr 15, 2024v3
NotableStart date: Jan 2024 to Mar 2024v2
MinorStudy First Submitted
Stopped: an ongoing trial was terminated, suspended or withdrawn.
Notable: the trial’s plan changed such as a big move in its timeline or size, a new primary endpoint, sponsor or phase, or recruiting opened or resumed.
Minor: routine progress and housekeeping, such as sites added or enrollment closed.
The participants in this registry study will have fibrodysplasia ossificans progressiva (FOP).
FOP is an ultra-rare, severely disabling disease characterized by new bone formation in areas of the body where bone is not normally present (heterotopic ossification (HO)).
HO is often preceded by painful, recurrent episodes of soft tissue swelling (flare-ups).
This registry study will take place in countries where the treatment, known as palovarotene, has been approved for use. Participants will either be treated with palovarotene (i.e already be receiving palovarotene as prescribed by their treating physician according to locally approved product information) or untreated with palovarotene.
The main aim of this registry study will be to collect and assess real-world safety data on children and adult participants with FOP treated with palovarotene.
This registry study will also describe the effectiveness of palovarotene in exposed participants, including the effect on everyday activities and physical performance.
In addition, this registry study aims to descriptively compare key safety outcomes (i.e. flare-up episodes, growth outcomes, and bone fractures) between participants exposed and unexposed to palovarotene.