A Phase I/II Dose-escalating Study of the Safety, Tolerability and Efficacy of KIO-301 Administered Intravitreally to Patients With Retinitis Pigmentosa and Choroideremia (ABACUS)
Model scores of the 29,894 trials active now.
Model score 17% for any early termination, 2% for termination due to slow enrollment. Past trials like this one (phase, sponsor type and disease area, started 2008–2016) ended terminated 16% of the time (257 trials).
Finished trial that started in 2015 or later: the model never saw it during training.
How it ended
Completed on 2026-03-24, after 2022-11-10 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 2026-03-24. 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) (raises risk) · Wording
Phrases that raised it: time ofacuitydiseasechildbearing potentialvisual
Phrases that lowered it: participantparticipantsmaleagedefficacy -
Accepts healthy volunteers: No (raises risk) · Who can join
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Phase: 1/2 (raises risk) · Design
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Sponsor's past termination rate: no earlier finished trials (lowers risk) · Sponsor's track record
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Design: single group (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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Disease area, cancer: No (lowers risk) · Disease area
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Drug's FAERS reports marked serious: no FAERS history (raises risk) · Drug's FDA history
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Number of arms: 1 (raises risk) · Design
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Minimum age: 18 (raises risk) · Who can join
-
Primary purpose: treatment (raises risk) · Design
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Sponsor type: industry (lowers risk) · Sponsor's track record
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Has a data monitoring committee: No (lowers risk) · Design
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Blinding: none (raises risk) · Design
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Trials the sponsor started in the prior 2 years: 1 (raises risk) · Sponsor's track record
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Sponsor's past trials: 0 (lowers risk) · Sponsor's track record
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Disease area, neurology: No (lowers risk) · Disease area
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
- 1 (typical: 2)
- Allocation
- not applicable (typical: randomized)
- Design
- single group (typical: parallel)
- Primary purpose
- treatment
- Blinding
- 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
- 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
- none of the 14 tracked areas
- 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
- Study of Oral Minocycline in Treating Bilateral Cystoid Macular Edema Associated With Retinitis Pigmentosa NCT02140164 · started 2014 · scored riskier than 52% of active trials completed
- MAD of IVT VP-001 in PRPF31 Mutation-Associated Retinal Dystrophy Subjects (Wallaby) NCT06455826 · started 2024 · scored riskier than 44% of active trials completed
- NT-101 Topical Ophthalmic Solution in Patients With Wet AMD NCT06704009 · started 2025 · scored riskier than 59% of active trials completed
- Phase III Study Assessing the Efficacy, Safety and Immunogenicity of SOK583A1 Versus Eylea® in Patients With Neovascular Age-related Macular Degeneration NCT04864834 · started 2021 · scored riskier than 74% of active trials completed
- Interferon Gamma-1b Administered Topically for Macular Edema/Intraretinal Schisis Cysts in Rod-Cone Dystrophy (RCD) and Enhanced S-Cone Syndrome (ESCS) NCT02338973 · started 2015 · scored riskier than 53% 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.