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ObjectivesWe aimed to determine whether changes in acute severe colitis (ASC) management have translated to improved outcomes and to develop a simple model predicting steroid non-response on admission.DesignOutcomes of 131 adult ASC admissions (117 patients) in Oxford, UK between 2015 and 2019 were compared with data from 1992 to 1993. All patients received standard treatment with intravenous corticosteroids and endoscopic disease activity scoring (Ulcerative Colitis Endoscopic Index of Severity (UCEIS)). Steroid non-response was defined as receiving medical rescue therapy or surgery. A predictive model developed in the Oxford cohort was validated in Australia and India (Gold Coast University Hospital 2015–2020, n=110; All India Institute of Medical Sciences, New Delhi 2018–2020, n=62).ResultsIn the 2015–2019 Oxford cohort, 15% required colectomy during admission vs 29% in 1992–1993 (p=0.033), while 71 (54%) patients received medical rescue therapy (27% ciclosporin, 27% anti-tumour necrosis factor, compared with 27% ciclosporin in 1992–1993 (p=0.0015). Admission C reactive protein (CRP) (false discovery rate, p=0.00066), albumin (0.0066) and UCEIS scores (0.015) predicted steroid non-response. A four-point model was developed involving CRP of ≥100 mg/L (one point), albumin of ≤25 g/L (one point), and UCEIS score of ≥4 (1 point) or ≥7 (2 points). Patients scoring 0, 1, 2, 3 and 4 in the validation cohorts had steroid response rates of 100, 75.0%, 54.9%, 18.2% and 0%, respectively. Scoring of ≥3 was 84% (95% CI 0.70 to 0.98) predictive of steroid failure (OR 11.9, 95% CI 10.8 to 13.0). Colectomy rates in the validation cohorts were were 8%–11%.ConclusionsEmergency colectomy rates for ASC have halved in 25 years to 8%–15% worldwide. Patients who will not respond to corticosteroids are readily identified on admission and may be prioritised for early intensification of therapy.

Background and Aims: Exclusive enteral nutrition (EEN) is not routinely used as induction therapy for adults with active Crohn's disease (CD). The aim of this study was to assess the effectiveness of EEN with oral polymeric formula as an adjunct for inducing clinical and biochemical remission in adults with active CD. Methods:We performed a retrospective analysis of data from January 2018 to September 2019 on all patients with active CD who commenced EEN. The primary end point (PE) was clinical remission (Crohn's Disease Activity Index [CDAI] ≤150) or response (100-point decrease in CDAI) at 8 weeks. The secondary end point (SE) was biochemical remission (C-reactive protein level ≤5 mg/L or feces calprotectin level ≤150 mcg/g) at 8 weeks in those whose baseline values were elevated. We also aimed to identify predictors of response to EEN therapy.Results: Sixty-six patients commenced EEN; 53 (of 66; 80.3%) completed the prescribed EEN course. At 8 weeks, 42 (of 66; 63.6%) patients achieved the PE, and 30 (of 53; 56.6%) patients achieved the SE. Patients receiving EEN for ≥6 weeks achieved the PE (72% vs 47.8%; odds ratio [OR], 2.8; P = 0.047; CI, 0.97-8.16) and SE (67.6% vs 36.8%; OR, 3.58; P = 0.035; CI, 1.1-11.63) more frequently compared with patients who received EEN for <6 weeks. Nine patients reported adverse effects. Conclusion:Polymeric EEN is well tolerated, safe, and effective in inducing clinical and biochemical remission in adults with active CD. EEN duration of ≥6 weeks has better outcomes.

Background Ustekinumab (UST), a human anti-IL12/23p40 monoclonal antibody, was approved in Australia for the treatment of adults with moderate to severe Crohn’s disease (CD) in 2017. The aim of this retrospective single centre study was to study the efficacy and safety of UST in CD in a real world cohort. Methods Patients with CD who began UST therapy between June 2017 and July 2019 were included. UST induction was given as an infusion (6 mg/kg) at week 0 followed by 90 mg subcutaneous injection (SC) at week 8 and 90 mg SC every 8 weeks as maintenance. Primary endpoint (PE) was steroid free clinical remission or steroid free clinical response at week 24. Secondary endpoints (SE) were: endoscopic response or remission, radiological response or remission, biochemical response (CRP &lt; 5 mg/L or Calprotectin &lt;150 μg/g), clinical response or remission at week 52. Results Seventy-six patients with CD were included in the study. 64.5% failed ≥1 anti-TNF and 13.1% failed anti-TNF and vedolizumab; 26(34.2%) patients were biologic-naïve. Median follow-up was 61 weeks. Ten patients (13.1%) discontinued UST, and the median time to discontinuation was 48 weeks; eight patients due to loss of response, one patient due to paradoxical worsening of arthralgia, one patient chose to stop treatment. Six patients underwent surgery whilst on UST. At week 12, 48 (63.1%) of patients achieved steroid free clinical remission or response [19/26 (73%) Anti-TNF naive and 29/49 (59%) anti-TNF exposed]; of these patients, 16/19 (84%) in the anti-TNF naive group and 19/29(65.5%) in the anti-TNF exposed group achieved PE. Forty-seven (61.8%) patients achieved PE. At 52 weeks, 68.2% (30/44), 67.5% (27/40), 56.1% (23/41), 69% (29/42) achieved endoscopic, radiological, biochemical and clinical endpoints respectively. Achieving steroid free clinical response or remission at week 12 was associated with achieving PE (79% vs. 42.8%, OR 3.6, p 0.01) and clinical SE (83.3 vs. 58.3%, p 0.001). Patients with B2/3 vs. B1(54% vs. 82%, p 0.09), ≥2 biological failure (72% vs. 33%, p 0.09), CRP &lt; 6 baseline (55 % vs. 67.5%, p 0.3) were less likely to attain PE. Conclusion In a real-world cohort, UST appears efficacious and safe in medium and long term, with modest clinical, biochemical, radiological and endoscopic outcomes. Patients who achieve steroid-free clinical remission or response at 12 weeks are more likely to be in clinical remission or response at 24 and 52 weeks.