A Study of PRA023 in Healthy Volunteers
Model scores of the 29,894 trials active now.
Model score 6% for any early termination, 0% for termination due to slow enrollment. Past trials like this one (phase, sponsor type and disease area, started 2008–2016) ended terminated 5% of the time (4,470 trials).
Finished trial that started in 2015 or later: the model never saw it during training.
How it ended
Completed on 2021-09-23, after 2020-12-15 start.
The score above never used this outcome: finished trial that started in 2015 or later: the model never saw it during training.
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 2021-09-23. 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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Sponsor's past termination rate: no earlier finished trials (lowers risk) · Sponsor's track record
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Phase: 1 (lowers risk) · Design
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Wording of the registration (title, summary, criteria) (lowers risk) · Wording
Phrases that raised it: safety tolerabilitysubjectsascendingtolerability pharmacokineticsand pharmacodynamics
Phrases that lowered it: screeningmmhgdrugsafety of90 -
Has a data monitoring committee: Yes (raises risk) · Design
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Number of arms: 4 (lowers risk) · Design
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Blinding: double (raises risk) · Design
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Drug's FAERS reports with a death: no FAERS history (raises risk) · Drug's FDA history
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Disease area, cancer: No (lowers risk) · Disease area
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Minimum age: 18 (raises risk) · Who can join
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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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Sponsor's past trials: 0 (lowers risk) · Sponsor's track record
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Collaborators: 1 (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
- 1 (typical: 2)
- Number of arms
- 4 (typical: 2)
- Allocation
- randomized
- Design
- sequential (typical: parallel)
- Primary purpose
- basic science (typical: treatment)
- Blinding
- double (typical: none)
- Has a data monitoring committee
- Yes (typical: 56% yes)
- Responsible party
- sponsor
- Collaborators
- 1 (typical: 0)
- Keywords listed
- 0 (typical: 1)
Who can join
- Minimum age
- 18
- Maximum age
- 55 (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
- 0 (typical: 32)
- Sponsor's past termination rate
- no earlier finished trials (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
- 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
- none of the 14 tracked areas
- 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
- Bioavailability of SC Formulation and Japanese Ethnobridging Study for PRA023 NCT05354349 · started 2022 · scored riskier than 6% of active trials completed
- A Study of PRA052 in Healthy Volunteers NCT05603182 · started 2022 · scored riskier than 6% of active trials completed
- A Clinical Trial to Evaluate the Relative Bioavailability of PRAX-628 NCT06840925 · started 2025 · scored riskier than 2% of active trials completed
- A First in Human Study of the Safety and Tolerability of Single and Multiple Doses of SPR741 in Healthy Volunteers NCT03022175 · started 2016 · scored riskier than 5% of active trials completed
- The Pharmacokinetics (PK), Pharmacodynamics(PD), Safety, Tolerability of SR1375 in Healthy Volunteers NCT05421923 · started 2022 · scored riskier than 2% 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.