A Phase 2 Safety and Immunogenicity Study for an Anthrax Vaccine Using 3 Schedules and Two Dose Levels
Model scores of the 29,894 trials active now.
Model score 3% 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 (780 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 2014-12-31, after 2013-01-31 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 2014-12-31. 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) (lowers risk) · Wording
Phrases that raised it: therapypostchemotherapypatientsurgery
Phrases that lowered it: vaccineimmunogenicityhealthyvolunteerssafety -
Accepts healthy volunteers: Yes (lowers risk) · Who can join
-
Sponsor's past termination rate: 13.3% (raises risk) · Sponsor's track record
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Primary purpose: prevention (lowers risk) · Design
-
Phase: 2 (raises risk) · Design
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Has a data monitoring committee: Yes (raises risk) · Design
-
Number of arms: 5 (lowers risk) · Design
-
Disease area, cancer: No (lowers risk) · Disease area
-
Blinding: triple (raises risk) · Design
-
Design: parallel (raises risk) · Design
-
Minimum age: 18 (raises risk) · Who can join
-
Sponsor type: industry (lowers risk) · Sponsor's track record
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Sponsor's past trials: 15 (lowers risk) · Sponsor's track record
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Disease area, neurology: No (lowers risk) · Disease area
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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
- 2
- Number of arms
- 5 (typical: 2)
- Allocation
- randomized
- Design
- parallel
- Primary purpose
- prevention (typical: treatment)
- Blinding
- triple (typical: none)
- Has a data monitoring committee
- Yes (typical: 56% yes)
- Responsible party
- sponsor
- Collaborators
- 1 (typical: 0)
- Keywords listed
- 2 (typical: 1)
Who can join
- Minimum age
- 18
- Maximum age
- 50 (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
- 15 (typical: 32)
- Sponsor's past termination rate
- 13.3% (typical: 9.9%)
- Trials the sponsor started in the prior 2 years
- 2 (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
- infectious disease
- 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
- Safety, Tolerability and Immunogenicity Study of AV7909 Anthrax Vaccine in Healthy Adults NCT01263691 · started 2010 · scored riskier than 2% of active trials completed
- A Study of Anthrax Vaccines Px563L and RPA563 in Healthy Adult Subjects NCT02655549 · started 2015 · scored riskier than 1% of active trials completed
- VELOCITY: An Anthrax Vaccine Clinical Study NCT03877926 · started 2019 · scored riskier than 4% of active trials completed
- A Phase 1 Ascending Dose Study to Assess the Safety and Immunogenicity of Adenovirus Anthrax Vector Candidate Vaccines NCT01979406 · started 2013 · scored riskier than 2% of active trials completed
- PA83-FhCMB Plant-Derived Recombinant Protective Antigen (rPA) Anthrax Vaccine NCT02239172 · started 2014 · scored riskier than 1% 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.