Study to Evaluate Efficacy and Safety of S303 Treated Red Blood Cells (RBCs)in Subjects With Thalassemia Major Requiring Chronic RBC Transfusion
Model scores of the 29,894 trials active now.
Model score 9% 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 10% of the time (139 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 2017-12-31, after 2012-12-31 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 2017-12-31. 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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Design: crossover (lowers risk) · Design
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Wording of the registration (title, summary, criteria) (raises risk) · Wording
Phrases that raised it: chronicstudyanticipatedbloodhcv
Phrases that lowered it: subjectsfunctionbone marrowdefinedcells -
Sponsor's past termination rate: 0% (lowers risk) · Sponsor's track record
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Accepts healthy volunteers: No (raises risk) · Who can join
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Primary purpose: other (lowers risk) · Design
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Phase: 3 (lowers risk) · Design
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Disease area, cancer: No (lowers risk) · Disease area
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Drug's FAERS reports with a death: no FAERS history (raises risk) · Drug's FDA history
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Trials the sponsor started in the prior 2 years: 1 (raises risk) · Sponsor's track record
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Drug's FAERS reports marked serious: no FAERS history (raises risk) · Drug's FDA history
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Blinding: double (raises risk) · Design
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Has a data monitoring committee: No (lowers risk) · Design
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Sponsor type: industry (lowers risk) · Sponsor's track record
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Disease area, neurology: No (lowers risk) · Disease area
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Sponsor's past trials: 1 (raises 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
- 3 (typical: 2)
- Number of arms
- 2
- Allocation
- randomized
- Design
- crossover (typical: parallel)
- Primary purpose
- other (typical: treatment)
- Blinding
- double (typical: none)
- Has a data monitoring committee
- No (typical: 56% yes)
- Responsible party
- sponsor
- Collaborators
- 0
- Keywords listed
- 1
Who can join
- Minimum age
- 10 (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
- 1 (typical: 32)
- Sponsor's past termination rate
- 0% (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 Study to Assess the Recovery and Lifespan of Radiolabeled Autologous S303 Treated Red Blood Cells NCT01711346 · started 2012 · scored riskier than 5% of active trials completed
- Biotin-RBC Transfusion in SCD NCT04426591 · started 2021 · scored riskier than 23% of active trials completed
- Study to Assess S303 RBCs and Evaluate Safety and Efficacy in Patients Requiring Transfusion Support of Acute Anemia NCT01716923 · started 2013 · scored riskier than 85% of active trials completed
- Age of Blood in Sickle Cell Transfusion NCT03704922 · started 2017 · scored riskier than 56% of active trials completed
- A Study of IMR-687 in Subjects With Beta Thalassemia NCT04411082 · started 2020 · scored riskier than 30% of active trials terminated
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.