Watchful waiting: new study tracks rare tumor growth without immediate treatment
NCT ID NCT01801176
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study followed 100 adults with a rare, non-cancerous tumor called peripheral primitive fibromatosis. Instead of treating everyone right away, doctors monitored patients closely to see how the tumors behaved over three years. The goal was to learn which factors might predict tumor growth and to record what treatments were used if the tumor got worse.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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100 people
The number who actually took part.
- Started
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Jun 2012
- Finished
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Dec 2020
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
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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18 years and older
- 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: * Peripheral primitive fibromatosis * Adults patients * Peripheral primitive fibromatosis proved by biopsy * Peripheral primitive fibromatosis R2 resected for which monitoring is decided * MRI realized before inclusion * Patient information and informed consent signed Exclusion Criteria: * Local recur * Head and neck topography * Primitive fibromatosis R0 or R1 resected * Specific medical treatment of fibromatosis * Patient already included in an other clinical trial with an experimental molecule * Persons deprived of liberty * Impossibility to submit to the trial's medical follow-up for psychological, geographical or socials reasons * Previous history of cancer * Counter indication to the realization of an MRI
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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.
Contacts and locations
Locations
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Institut Gustave Roussy
Villejuif, Val de Marne, 94805, France