Trial Comparing Two Strategies of Vaccination Against Hepatitis B in HIV-infected Patients Non Responding to Primary Immunization (B-BOOST)
Model scores of the 29,894 trials active now.
Model score 12% for any early termination, 3% for termination due to slow enrollment. Past trials like this one (phase, sponsor type and disease area, started 2008–2016) ended terminated 14% of the time (59 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 2013-02-28, after 2008-05-31 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 2013-02-28. 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: 20% (raises risk) · Sponsor's track record
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Accepts healthy volunteers: No (raises risk) · Who can join
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Primary purpose: prevention (lowers risk) · Design
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Wording of the registration (title, summary, criteria) (lowers risk) · Wording
Phrases that raised it: patientsequalcancercellchemotherapy
Phrases that lowered it: vaccinationhiv infectedvaccinesinglescreening -
Phase: 3 (lowers risk) · Design
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Has a data monitoring committee: Yes (raises risk) · Design
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Disease area, cancer: No (lowers risk) · Disease area
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Design: parallel (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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Maximum age: not given (raises risk) · Who can join
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Sponsor's past trials: 5 (lowers risk) · Sponsor's track record
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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
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
- prevention (typical: treatment)
- Blinding
- none
- Has a data monitoring committee
- Yes (typical: 56% yes)
- Responsible party
- sponsor
- Collaborators
- 1 (typical: 0)
- Keywords listed
- 3 (typical: 1)
Who can join
- Minimum age
- 18
- Maximum age
- not given (typical: 71)
- Sex
- all
- Accepts healthy volunteers
- No (typical: 9% yes)
Sponsor's track record
- Sponsor type
- government (typical: academic or other)
- Sponsor's past trials
- 5 (typical: 32)
- Sponsor's past termination rate
- 20% (typical: 9.9%)
- Trials the sponsor started in the prior 2 years
- 5 (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, digestive, immunology, urogenital
- 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
- Comparative Efficacy of an Intensified Re-vaccination Scheme for Hepatitis B Virus Infection Among Patients Infected With HIV . NCT02003703 · started 2015 · scored riskier than 11% of active trials completed
- A Pilot Study Comparing the Immunogenicity of Fendrix vs. Double-dose Engerix B in HIV-infected Non-responders to Standard Hepatitis B Vaccination Courses NCT02434848 · started 2015 · scored riskier than 24% of active trials completed
- B-Enhancement of HBV Vaccination in Persons Living With HIV (BEe-HIVe): Evaluation of HEPLISAV-B NCT04193189 · started 2020 · scored riskier than 12% of active trials completed
- Safety, Efficacy, Immunogenicity Study of GSK Biologicals' HBV Viral Vector and Adjuvanted Proteins Vaccine (GSK3528869A) in Adult Patients With Chronic Hepatitis B Infection NCT03866187 · started 2019 · scored riskier than 28% of active trials terminated
- Safety and Efficacy of a Hepatitis B Vaccine in Immunosuppressed Patients NCT04199715 · started 2019 · scored riskier than 58% 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.