A Pilot Study of 18F-FLT in Pediatric Patients With Central Nervous System (CNS) Tumors
Model scores of the 29,894 trials active now.
Model score 14% for any early termination, 6% for termination due to slow enrollment. Past trials like this one (phase, sponsor type and disease area, started 2008–2016) ended terminated 23% of the time (1,629 trials).
Finished trial that started 2008–2014: scored by a model trained without any trial from its start year, so its own outcome was never used.
How it ended
Terminated on 2010-03-31, after 2008-03-31 start.
Reason given by the sponsor: “other”
The score above never used this outcome: finished trial that started 2008–2014: scored by a model trained without any trial from its start year, so its own outcome was never used.
Termination over time, as the model saw it at the start
Cumulative chance of ending terminated (red) or completed (green) by each year from its start; it actually ended on 2010-03-31. The rest of the way to 100% is still running.
From the competing-risks survival model (termination vs completion, still-running trials censored), fit to trials that started 2008–2014 and recalibrated to termination rates over 2022–2024, since termination has become more common. Checked on past years, it still ran a little low when the rise continued.
What moved the score
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Wording of the registration (title, summary, criteria) (raises risk) · Wording
Phrases that raised it: imagingbrainpetcnstime of
Phrases that lowered it: to evaluateevaluate theundergoingnormalstudy to -
Accepts healthy volunteers: No (raises risk) · Who can join
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Phase: 1 (lowers risk) · Design
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Sponsor's past termination rate: 5.6% (lowers risk) · Sponsor's track record
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Primary purpose: diagnostic (lowers risk) · Design
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Disease area, cancer: Yes (raises risk) · Disease area
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Trials the sponsor started in the prior 2 years: 51 (lowers risk) · Sponsor's track record
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Design: single group (raises risk) · Design
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Has a data monitoring committee: Yes (raises risk) · Design
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Sponsor type: academic or other (raises risk) · Sponsor's track record
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Sponsor's past trials: 71 (lowers risk) · Sponsor's track record
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Minimum age: not given (raises risk) · Who can join
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Number of arms: 1 (raises risk) · Design
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Maximum age: 21 (raises risk) · Who can join
Every input that moved this score, largest first: SHAP contributions in log-odds, red raising risk and green lowering it. They describe the model, not causes of termination. Phrases are traced from the text features back to this registration's words, approximately.
The trial
Design
- Phase
- 1 (typical: 2)
- Number of arms
- 1 (typical: 2)
- Allocation
- not applicable (typical: randomized)
- Design
- single group (typical: parallel)
- Primary purpose
- diagnostic (typical: treatment)
- Blinding
- none
- Has a data monitoring committee
- Yes (typical: 56% yes)
- Responsible party
- sponsor
- Collaborators
- 1 (typical: 0)
- Keywords listed
- 6 (typical: 1)
Who can join
- Minimum age
- not given (typical: 18)
- Maximum age
- 21 (typical: 71)
- Sex
- all
- Accepts healthy volunteers
- No (typical: 9% yes)
Sponsor's track record
- Sponsor type
- academic or other
- Sponsor's past trials
- 71 (typical: 32)
- Sponsor's past termination rate
- 5.6% (typical: 9.9%)
- Trials the sponsor started in the prior 2 years
- 51 (typical: 19)
Drug's FDA history
- Drugs with FDA adverse-event history
- 0 (typical: 1)
- Drug has FAERS history
- No (typical: 64% yes)
- Drug's FAERS reports before start
- 0 (typical: 2148)
- Drug's FAERS reports in the prior 12 months
- 0 (typical: 412.5)
- Drug's FAERS reports marked serious
- no FAERS history (typical: 85.6%)
- Drug's FAERS reports with a death
- no FAERS history (typical: 15.9%)
Disease area and drugs
- Disease areas
- cancer, neurology
- Drugs matched to FDA substances
- none matched
Typical values are among the trials active now. Sponsor and drug history are counted only up to this trial's start date.
Similar finished trials
- FLT-PET Imaging of Brain Tumors in Children NCT01244737 · started 2010 · scored riskier than 82% of active trials completed
- Fluoroethyltyrosine for Evaluation of Intracranial Neoplasms NCT04044937 · started 2018 · scored riskier than 51% of active trials completed
- Multi-Tracer PET Assessment of Primary Brain Tumors NCT00813566 · started 2010 · scored riskier than 93% of active trials completed
- [18F]Fluciclovine and [18F]FLT PET/CT Assessment of Primary High-Grade Brain Tumors NCT03276676 · started 2018 · scored riskier than 92% of active trials terminated
- F-18 Fluorothymidine PET Imaging for Early Evaluation of Response to Therapy in Head & Neck Cancer Patients NCT00721799 · started 2008 · scored riskier than 78% of active trials completed
Closest by meaning of the registration text (PubMedBERT embeddings), among finished trials. How they ended is context, not an input to this trial's score.