Study to Evaluate the Safety and Effectiveness of USL255 in Patients With Refractory Partial-onset Seizures
Model scores of the 29,894 trials active now.
Model score 11% for any early termination, 2% for termination due to slow enrollment. Past trials like this one (phase, sponsor type and disease area, started 2008–2016) ended terminated 15% of the time (734 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 2013-01-31, after 2010-05-31 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 2013-01-31. 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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Sponsor's past termination rate: 0% (lowers risk) · Sponsor's track record
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Accepts healthy volunteers: No (raises risk) · Who can join
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Wording of the registration (title, summary, criteria) (raises risk) · Wording
Phrases that raised it: onsetsubject hasseizuresseizurecriteria subject
Phrases that lowered it: visithave historyand safetyefficacy andto evaluate -
Drug's FAERS reports with a death: 6.7% (lowers risk) · Drug's FDA history
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Has a data monitoring committee: not given (lowers risk) · Design
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Phase: 3 (lowers risk) · Design
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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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Disease area, cancer: No (lowers risk) · Disease area
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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: 0 (raises risk) · Sponsor's track record
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Minimum age: 18 (raises risk) · Who can join
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Primary purpose: treatment (raises risk) · Design
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
- 3 (typical: 2)
- Number of arms
- 2
- Allocation
- randomized
- Design
- parallel
- Primary purpose
- treatment
- Blinding
- double (typical: none)
- Has a data monitoring committee
- not given (typical: 56% yes)
- Responsible party
- sponsor
- Collaborators
- 0
- Keywords listed
- 3 (typical: 1)
Who can join
- Minimum age
- 18
- Maximum age
- 75 (typical: 71)
- Sex
- all
- Accepts healthy volunteers
- No (typical: 9% yes)
Sponsor's track record
- Sponsor type
- industry (typical: academic or other)
- Sponsor's past trials
- 1 (typical: 32)
- Sponsor's past termination rate
- 0% (typical: 9.9%)
- Trials the sponsor started in the prior 2 years
- 0 (typical: 19)
Drug's FDA history
- Drugs with FDA adverse-event history
- 1
- Drug has FAERS history
- Yes (typical: 64% yes)
- Drug's FAERS reports before start
- 10128 (typical: 2148)
- Drug's FAERS reports in the prior 12 months
- 2499 (typical: 412.5)
- Drug's FAERS reports marked serious
- 81.5% (typical: 85.6%)
- Drug's FAERS reports with a death
- 6.7% (typical: 15.9%)
Disease area and drugs
- Disease areas
- neurology
- Drugs matched to FDA substances
- topiramate
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
- Open-label Extension Study to Evaluate the Safety of USL255 in Patients With Refractory Partial-onset Seizures NCT01191086 · started 2010 · scored riskier than 11% of active trials completed
- A Long-term Safety and Tolerability Study of USL261 in Patients With Seizure Clusters NCT02161185 · started 2014 · scored riskier than 37% of active trials terminated
- Study to Evaluate the Long-term Safety and Tolerability of USL261 in Patients With Seizure Clusters NCT01529034 · started 2012 · scored riskier than 89% of active trials terminated
- A Study With an Open-label Extension Phase to Evaluate the Efficacy and Safety of Perampanel (E2007) Administered as an Adjunctive Therapy in Subjects With Refractory Partial-onset Seizures NCT01618695 · started 2012 · scored riskier than 20% of active trials completed
- Efficacy and Safety of BGG492 as Adjunctive Treatment in Patients With Partial Onset Seizures NCT01147003 · started 2010 · scored riskier than 19% 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.