Indirect treatment comparisons of the gene therapy etranacogene dezaparvovec (CSL222) vs. extended half-life Factor IX therapies for severe or moderately severe hemophilia B
Bibliographic record
Abstract
Introduction Etranacogene dezaparvovec (CSL222) gene therapy for haemophilia B delivers Factor IX (FIX) Padua via an AAV5 vector and demonstrated superior efficacy at 24 months in reducing bleeds vs. a 6-month lead-in period of prophylaxis with FIX products in the HOPE-B clinical trial.In the absence of head-to-head comparisons of CSL222 vs. FIX products, indirect treatment comparisons (ITC) can be used. This study aims to compare the efficacy of CSL222 vs. prophylaxis with rIX-FP, rFIXFc and N9-GP using ITC, and support HOPE-B results.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".