A Safety, Tolerability, and Pharmacokinetics Study of a Single Intravenous Injection of Recombinant Coagulation Factor VIII Fc - Von Willebrand Factor - XTEN Fusion Protein (rFVIIIFc-VWF-XTEN) (BIVV001) in Previously Treated Adults With Severe Hemophilia A (EXTEN-A)
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 and sponsor type, started 2008–2016) ended terminated 21% of the time (1,462 trials).
Finished trial that started in 2015 or later: the model never saw it during training.
How it ended
Completed on 2018-11-12, after 2017-08-28 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 2018-11-12. 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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Primary purpose: other (lowers risk) · Design
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Accepts healthy volunteers: No (raises 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: 1/2 (raises 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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Wording of the registration (title, summary, criteria) (raises risk) · Wording
Phrases that raised it: enrollmentintravenousgreatertolerabilitystage
Phrases that lowered it: participantfviiiplasmascreeningcopies ml -
Drug's FAERS reports with a death: no FAERS history (raises risk) · Drug's FDA history
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Minimum age: 18 (raises risk) · Who can join
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Number of arms: 2 (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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Maximum age: 65 (lowers risk) · Who can join
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Sponsor's past trials: 0 (lowers risk) · Sponsor's track record
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Collaborators: 0 (raises risk) · Design
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Disease area, neurology: No (lowers risk) · Disease area
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Sponsor type: industry (lowers risk) · Sponsor's track record
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
- 1/2 (typical: 2)
- Number of arms
- 2
- Allocation
- non randomized (typical: randomized)
- Design
- sequential (typical: parallel)
- Primary purpose
- other (typical: treatment)
- Blinding
- none
- Has a data monitoring committee
- Yes (typical: 56% yes)
- Responsible party
- sponsor
- Collaborators
- 0
- Keywords listed
- 0 (typical: 1)
Who can join
- Minimum age
- 18
- Maximum age
- 65 (typical: 71)
- Sex
- male (typical: all)
- Accepts healthy volunteers
- No (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
- 1 (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
- hematology
- 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
- A Phase 3 Open-label Interventional Study of Intravenous Recombinant Coagulation Factor VIII Fc-von Willebrand Factor-XTEN Fusion Protein, Efanesoctocog Alfa (BIVV001), in Patients With Severe Hemophilia A NCT04161495 · started 2019 · scored riskier than 8% of active trials completed
- Safety, Efficacy and PK of BIVV001 in Pediatric Patients With Hemophilia A NCT04759131 · started 2021 · scored riskier than 8% of active trials completed
- Pharmacokinetic Assessment of Standard Half-Life (SHL) FVIII, Extended Half-Life (EHL) FVIII, and Efanesoctocog Alfa (BIVV001) in Severe Hemophilia A NCT05042440 · started 2021 · scored riskier than 19% of active trials completed
- Pharmacokinetics of rFVIIIFc at Two Vial Strengths NCT02083965 · started 2014 · scored riskier than 11% of active trials completed
- Pharmacokinetics and Safety of rFVIIIFc Manufactured at 15,000 L (15K) Scale NCT02502149 · started 2015 · scored riskier than 8% 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.