P308 Quadruple oral antibiotic treatment in refractory Paediatric Inflammatory Bowel Disease – incidence and analysis of responders from a, 10 year cohort
Bibliographic record
Abstract
Abstract Background Recent, albeit limited, studies indicate that combination oral antibiotic therapy may be an efficacious, immunosuppressive-free, alternative strategy to achieve remission in a subset of medically refractory IBD patients. We sought to identify incidence data and provide cohort analysis of any refractory IBD patients who subsequently responded to combination oral antibiotic therapy from a large paediatric inflammatory bowel disease [PIBD] centre. Methods We identified a regional cohort of prospectively acquired incident cases of paediatric inflammatory bowel disease (CD, UC and IBD-U) diagnosed <16 years of age in South-East Scotland over a, 10-year period (2009–2018) and conducted a retrospective review identifying all cases with treatment refractory disease who subsequently achieved remission with a quadruple oral antibiotic regimen (vancomycin/doxycycline/metronidazole/amoxicillin) as salvage therapy. We characterised demographic data, IBD disease type, classification, severity, duration, as well as prior treatment efficacy and duration. There was a minimum of, 2 years of follow data available. Results In total, 4 cases of successful treatment with a quadruple oral antibiotic regimen in refractory patients were identified from our, 10-year PIBD registry that included, 222 new cases of PIBD (cumulative incidence, 1.8%). Treatment was attempted in, 9 refractory patients over the period. All responders were male, median age at diagnosis, 13.1yrs (0.5, 11.3, 14.8, 15.7yrs), median disease duration was, 1.3yrs. All responders had chronically active moderate-severe disease., 3 had ulcerative colitis (Paris classification E4), the remainder had Crohn’s disease (Montreal classification B1, L3/4). All responders had disease refractory to a least, 2 biological therapies that were co-administered with either thiopurines or methotrexate., 3 of the, 4 had failed at least one steroid induction course., 3 of the, 4 maintained clinical remission at the minimum, 2 year follow up on regular oral vancomycin therapy. Conclusion A subset of patients with PIBD that is highly refractory to conventional therapeutics, including to steroids and multiple biologics, may achieve remission with a quadruple combination oral antibiotic regimen. Those with active colitic phenotypes at intervention were more likely to respond and longer-term disease remission may be maintained with regular oral vancomycin.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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 source (direct Gemma or distilled Codex), 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".