P1177 Factors Driving Persistence to First-Line Advanced Therapies in Inflammatory Bowel Disease – A Real-World Study
Bibliographic record
Abstract
Abstract Background Advanced therapies, including biologics and small oral molecules, are the mainstay of inflammatory bowel disease (IBD) management. Nonetheless, factors driving drug persistence - defined as the duration from initiation to discontinuation of a therapy- remain unclear. This study aimed to evaluate the persistence of first-line advanced therapies in a real-word IBD cohort and identify factors influencing it. Methods Demographic and clinical data from IBD patients who initiated first-line advanced therapies after 2010 at the San Matteo Hospital Foundation were retrospectively collected in September 2024. Persistence and discontinuation, due to failure or other reasons, were recorded. Differences in persistence probability between therapies were analysed using the log-rank test. Univariate (Fisher’s exact test for categorical variables and t-test or Mann-Whitney for continuous variables) and multivariate (logistic regression) analyses were conducted to assess factors influencing persistence versus discontinuation due to failure. Results Among the 274 recruited patients (median age 42.5 years; F/M 119/155; 146 with Crohn’s disease (CD) and 128 with ulcerative colitis), 159 (58%) started infliximab, 76 (28%) adalimumab, 26 (9.5%) vedolizumab, 3 (1%) ustekinumab, 3 (1%) Janus-kinase inhibitors and 7 (2.5%) other advanced therapies as first-line treatment. Persistence was observed in 141 patients (51.5%), while 70 (26%) discontinued due to failure, 19 (6.9%) due to allergy/intolerance, 18 (6.6%) due to remission, 2 (0.7%) due to immunogenicity, and 24 (8.8%) for other/unknown reasons. No significant difference in drug persistence was observed between therapies (p=0.11). Univariate analysis identified CD phenotype (p<0.01), disease duration (p=0.01), concomitant mesalamine (p<0.01) or steroids (p<0.01), and therapy optimisation (p<0.01) as factors influencing persistence. A trend toward higher faecal calprotectin levels was observed in the discontinuation group (550 vs 385 mg/kg, p=0.09), while subcutaneous administration showed a slightly higher persistence rate (45% vs 33%, p=0.11). Multivariate analysis confirmed the CD phenotype as factor associated with higher persistence, while therapy optimisation was identified as a risk factor for discontinuation. Conclusion While persistence rates were similar across therapies, multiple factors influence persistence or discontinuation, offering potential guidance for optimising IBD management.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| 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) | 0.000 | 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".