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Screen Failures and Causes in Inflammatory Bowel Disease Randomized Controlled Trials: A Study of 16 913 Screened Patients

医学 溃疡性结肠炎 炎症性肠病 临床试验 内科学 疾病 随机对照试验 克罗恩病 艰难梭菌 肺结核 胃肠病学 病理 抗生素 微生物学 生物
作者
Mathieu Uzzan,Georgi Georgiev,Laurent Peyrin‐Biroulet,Yoram Bouhnik,Neeraj Narula,Vipul Jairath,Ryan C. Ungaro,Johan Burisch,Julien Kirchgesner,Bram Verstockt,Fez Hussain,Walter Reinisch
出处
期刊:Inflammatory Bowel Diseases [Oxford University Press]
标识
DOI:10.1093/ibd/izae233
摘要

Abstract Introduction While recruitment rates in inflammatory bowel disease (IBD) trials are continuously decreasing, the underlying reasons are likely multifactorial but remain poorly defined. Screen failure (SF) proportions and causes have not been extensively explored in IBD. Aim We assessed SF proportions and underlying SF reasons in IBD phase 2 and 3 clinical trials. Methods We analyzed SF-related data from 17 randomized controlled phase 2 or 3 IBD trials. Twelve trials were in ulcerative colitis (UC) and 5 trials were in Crohn’s disease (CD) operated by a single contract research organization, IQVIA. Differences between patient groups were tested for significance by Mann-Whitney and Fisher’s tests when appropriate. Results We analyzed a total of 11 161 patients with UC and 5752 patients with CD. The mean SF proportion was 0.43 per trial in UC. The primary reason for SFs in UC was not meeting the overall (modified) Mayo score inclusion threshold and/or the endoscopic subscore of at least 2 (33.8% of all SF). In CD clinical trials, the mean SF proportion was at 0.53. The primary cause for SFs was not meeting the CDAI eligibility criteria (23.1% of all SFs). SF proportions were significantly higher in CD versus UC trials (P = .027). Clostridium difficile or any other intestinal infection and not meeting tuberculosis screening criteria were other major reasons for SFs both in UC and CD. Conclusion High SF proportion in IBD clinical trials, particularly for CD studies, pose obstacles to patient recruitment. While underlying causes are diverse, arbitrarily defined clinical and/or endoscopic eligibility criteria remain the major limiting factors.
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