Study of KW-6002 (Istradefylline) for the Treatment of Parkinson's Disease in Patients Taking Levodopa
Model scores of the 29,894 trials active now.
Model score 10% 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 2011-02-28, after 2009-07-31 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 2011-02-28. 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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Wording of the registration (title, summary, criteria) (raises risk) · Wording
Phrases that raised it: placeborandomizationdouble blindparkinsonstable
Phrases that lowered it: patients whodayweeks before20days before -
Minimum age: 20 (lowers risk) · Who can join
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Accepts healthy volunteers: No (raises risk) · Who can join
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Phase: 3 (lowers risk) · Design
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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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Disease area, neurology: Yes (raises risk) · Disease area
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Trials the sponsor started in the prior 2 years: 16 (lowers risk) · Sponsor's track record
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Drug's FAERS reports with a death: no FAERS history (raises risk) · Drug's FDA history
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Has a data monitoring committee: No (lowers risk) · Design
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Primary purpose: treatment (raises risk) · Design
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Drug's FAERS reports marked serious: no FAERS history (raises risk) · Drug's FDA history
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Sponsor type: industry (lowers risk) · Sponsor's track record
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Number of arms: 3 (lowers 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
- 3 (typical: 2)
- Allocation
- randomized
- Design
- parallel
- Primary purpose
- treatment
- Blinding
- double (typical: none)
- Has a data monitoring committee
- No (typical: 56% yes)
- Responsible party
- sponsor
- Collaborators
- 0
- Keywords listed
- 4 (typical: 1)
Who can join
- Minimum age
- 20 (typical: 18)
- Maximum age
- not given (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
- 13 (typical: 32)
- Sponsor's past termination rate
- 0% (typical: 9.9%)
- Trials the sponsor started in the prior 2 years
- 16 (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
- Drugs matched to FDA substances
- istradefylline
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
- A 12-week Randomized Study to Evaluate Oral Istradefylline in Subjects With Moderate to Severe Parkinson's Disease NCT01968031 · started 2013 · scored riskier than 14% of active trials completed
- Long Term Study of Istradefylline in Subjects With Moderate to Severe Parkinson's Disease NCT02610231 · started 2015 · scored riskier than 32% of active trials completed
- Long-Term Safety Study of KW-6002 (Istradefylline) in Parkinson's Disease Patients NCT00957203 · started 2009 · scored riskier than 44% of active trials completed
- A Study of KW-6356 in Patients With Parkinson's Disease on Treatment With Levodopa-containing Preparations NCT03703570 · started 2018 · scored riskier than 29% of active trials completed
- Lenrispodun as Adjunctive Therapy in the Treatment of Patients With Motor Fluctuations Due to Parkinson's Disease NCT05766813 · started 2023 · scored riskier than 24% 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.