Evaluation of [11C]RO6924963, [11C]RO6931643, and [18F]RO6958948 as Tracers for Positron Emission Tomography (PET) Imaging of Tau in Healthy and Alzheimer's Disease (AD) Participants
Model scores of the 29,894 trials active now.
Model score 8% for any early termination, 1% for termination due to slow enrollment. Past trials like this one (phase, sponsor type and disease area, started 2008–2016) ended terminated 8% of the time (544 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
Completed on 2016-02-29, after 2014-08-31 start.
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 2016-02-29. 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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Accepts healthy volunteers: Yes (lowers risk) · Who can join
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Wording of the registration (title, summary, criteria) (lowers risk) · Wording
Phrases that raised it: alzheimerbrainaddiagnosisimaging
Phrases that lowered it: healthyparticipantsparticipantimmunodeficiencyvirus -
Disease area, psychiatry: Yes (raises risk) · Disease area
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Sponsor's past termination rate: 8.5% (raises risk) · Sponsor's track record
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Has a data monitoring committee: not given (lowers risk) · Design
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Phase: 1 (lowers risk) · Design
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Minimum age: 25 (lowers risk) · Who can join
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Sponsor's past trials: 755 (raises risk) · Sponsor's track record
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Disease area, neurology: Yes (raises risk) · Disease area
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Design: parallel (raises risk) · Design
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Sponsor type: industry (lowers risk) · Sponsor's track record
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Trials the sponsor started in the prior 2 years: 185 (lowers risk) · Sponsor's track record
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Disease area, cancer: No (lowers risk) · Disease area
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Drug's FAERS reports marked serious: no FAERS history (raises risk) · Drug's FDA history
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Keywords listed: 0 (raises risk) · Design
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Drug's FAERS reports with a death: no FAERS history (raises risk) · Drug's FDA history
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
- 3 (typical: 2)
- Allocation
- non randomized (typical: randomized)
- Design
- parallel
- Primary purpose
- basic science (typical: treatment)
- Blinding
- none
- Has a data monitoring committee
- not given (typical: 56% yes)
- Responsible party
- sponsor
- Collaborators
- 0
- Keywords listed
- 0 (typical: 1)
Who can join
- Minimum age
- 25 (typical: 18)
- Maximum age
- not given (typical: 71)
- Sex
- all
- Accepts healthy volunteers
- Yes (typical: 9% yes)
Sponsor's track record
- Sponsor type
- industry (typical: academic or other)
- Sponsor's past trials
- 755 (typical: 32)
- Sponsor's past termination rate
- 8.5% (typical: 9.9%)
- Trials the sponsor started in the prior 2 years
- 185 (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
- neurology, psychiatry
- 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
- Evaluation of [18F]RO6958948 as Tracer for Positron Emission Tomography (PET) Imaging of Tau Burden in Alzheimer's Disease Participants NCT02792179 · started 2016 · scored riskier than 29% of active trials completed
- [18F]MK-6240 Positron Emission Tomography (PET) Tracer First-in-Human Validation Study (MK-6240-001) NCT02562989 · started 2015 · scored riskier than 23% of active trials completed
- A Phase I [18F]THK-5351 Positron Emission Tomography Study in Healthy Subjects and Alzheimer's Disease NCT03112096 · started 2017 · scored riskier than 19% of active trials completed
- A Longitudinal Evaluation of a Radiotracer for Use in Tau Tracking NCT03919669 · started 2019 · scored riskier than 46% of active trials completed
- Quantitative Evaluation of [18F]T807 as a Potential PET Radioligand for Imaging Tau in Patients With Alzheimer's Disease NCT02370524 · started 2015 · scored riskier than 23% 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.