A Phase 3 Study of Tezacaftor (VX-661) in Combination With Ivacaftor (VX-770) in Subjects Aged 12 Years and Older With Cystic Fibrosis (CF), Who Have One F508del-CFTR Mutation and a Second Mutation That Has Been Demonstrated to be Clinically Responsive to Ivacaftor

Model scores of the 29,894 trials active now.

Model score 6% 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 6% of the time (528 trials).

Finished trial that started in 2015 or later: the model never saw it during training.

Cumulative chance of ending terminated (red) or completed (green) by each year from its start; it actually ended on 2017-09-30. 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.

• Wording of the registration (title, summary, criteria) (lowers risk) · Wording Phrases that raised it: diseaseriskstablestudy ofcombination with
  Phrases that lowered it: subjectsfev1screeningagedevaluate the
• Accepts healthy volunteers: No (raises risk) · Who can join
• Sponsor's past termination rate: 12.5% (raises risk) · Sponsor's track record
• Phase: 3 (lowers risk) · Design
• Drug's FAERS reports marked serious: 43.6% (lowers risk) · Drug's FDA history
• Has a data monitoring committee: Yes (raises risk) · Design
• Drug's FAERS reports with a death: 2.8% (lowers risk) · Drug's FDA history
• Design: parallel (raises risk) · Design
• Disease area, cancer: No (lowers risk) · Disease area
• Sponsor type: industry (lowers risk) · Sponsor's track record
• Blinding: quadruple (lowers risk) · Design
• Number of arms: 3 (lowers risk) · Design
• Primary purpose: treatment (raises risk) · Design
• Trials the sponsor started in the prior 2 years: 13 (lowers risk) · Sponsor's track record
• Disease area, neurology: No (lowers risk) · Disease area
• Disease area, respiratory: Yes (raises 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.

• A Phase 3 Study to Evaluate the Efficacy and Safety of Ivacaftor and VX-661 in Combination With Ivacaftor in Subjects Aged 12 Years and Older With Cystic Fibrosis, Heterozygous for the F508del-cystic Fibrosis Transmembrane Conductance Regulator (CFTR) Mutation NCT02392234 · started 2015 · scored riskier than 9% of active trials completed
• A Study to Evaluate the Efficacy and Safety of VX-661 in Combination With Ivacaftor in Subjects Aged 12 Years and Older With Cystic Fibrosis, Heterozygous for the F508del-CFTR Mutation NCT02516410 · started 2015 · scored riskier than 12% of active trials completed
• Study of Ivacaftor in Cystic Fibrosis Subjects Aged 12 Years and Older Homozygous for the F508del-CFTR Mutation NCT00953706 · started 2009 · scored riskier than 12% of active trials terminated
• A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study to Evaluate the Efficacy and Safety of VX-661 in Combination With Ivacaftor NCT02347657 · started 2015 · scored riskier than 7% of active trials completed
• Study of Ivacaftor in Cystic Fibrosis Subjects Aged 12 Years and Older With the G551D Mutation NCT00909532 · started 2009 · scored riskier than 9% 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.