A Study Exploring the PK/PD Relationship of QRL-101 in Adults With ALS
Model scores of the 29,894 trials active now.
Model score 8% 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 (544 trials).
Finished trial that started in 2015 or later: the model never saw it during training.
How it ended
Completed on 2025-08-22, after 2024-11-11 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 2025-08-22. 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: randomizationassessprioralskg m2
Phrases that lowered it: evaluate thelaboratoryclinicalsingle doseinvestigator -
Accepts healthy volunteers: No (raises risk) · Who can join
-
Sponsor's past termination rate: 0% (lowers risk) · Sponsor's track record
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Phase: 1 (lowers risk) · Design
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Disease area, neurology: Yes (raises risk) · Disease area
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Disease area, cancer: No (lowers risk) · Disease area
-
Has a data monitoring committee: No (lowers risk) · Design
-
Primary purpose: treatment (raises risk) · Design
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Sponsor type: industry (lowers risk) · Sponsor's track record
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Minimum age: 18 (raises risk) · Who can join
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Blinding: double (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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Trials the sponsor started in the prior 2 years: 4 (raises risk) · Sponsor's track record
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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: 80 (raises risk) · Who can join
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Number of arms: 2 (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
- 2
- Allocation
- randomized
- Design
- sequential (typical: parallel)
- Primary purpose
- treatment
- Blinding
- double (typical: none)
- Has a data monitoring committee
- No (typical: 56% yes)
- Responsible party
- sponsor
- Collaborators
- 0
- Keywords listed
- 0 (typical: 1)
Who can join
- Minimum age
- 18
- Maximum age
- 80 (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
- 4 (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
- neurology, metabolic
- 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 Evaluating Safety, Tolerability, and Pharmacokinetics of QRL-101 in Healthy Participants NCT05667779 · started 2022 · scored riskier than 6% of active trials completed
- A Study Evaluating Multiple Ascending Doses of QRL-101 in Healthy Participants NCT06532396 · started 2024 · scored riskier than 6% of active trials completed
- Phase 2 Study for SAR443820 in Participants With Amyotrophic Lateral Sclerosis (ALS) NCT05237284 · started 2022 · scored riskier than 38% of active trials terminated
- A Study of VRG50635 in Participants With Amyotrophic Lateral Sclerosis (ALS) NCT06215755 · started 2024 · scored riskier than 50% of active trials terminated
- A Phase IIb, Multi-Center, Multinational, Double-Blind, Placebo-Controlled Study, With an Open Label Extension, to Evaluate Safety, Tolerability and Efficacy of PrimeC in Subjects With ALS NCT05357950 · started 2022 · scored riskier than 27% 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.