Encore Presentations
Monday, October 14, 2024
01:00 PM–02:30 PM
Abstract
Background
Despite effective anti-TNF agents in treating Crohn’s disease (CD), some recipients experience primary or secondary non-responses, requiring alternative options. Ustekinumab and vedolizumab have not been compared in randomized controlled trials (RCTs) among CD population. Thus, we used real-world data to compare ustekinumab and vedolizumab at 12 weeks after failure of TNF inhibitors.
Methods
A retrospective study was conducted at a tertiary hospital in Dammam, Saudi Arabia. Patients with CD who had not responded to anti-TNF agents and had never been exposed to vedolizumab and/or ustekinumab were included. Children = 18 years of age, naïve CD patients, CD patients using only anti-TNF agents, and patients who lost follow up were excluded. Primary endpoints were clinical improvements, which were measured by Harvey-Bradshaw Index scores at 12 weeks, and clinical remission, which was measured as an ordinal outcome. Remission clinically, biochemically, and endoscopically; clinical response; cumulative steroid dose; and corticosteroid-free days were secondary endpoints. Using probabilistic Bayesian models and proportional odds models, we analyzed outcomes, and the posterior distribution was used to calculate the probability of treatment effectiveness. A national institutional review board approved the study.
Results
Five hundred forty-six patients received biological agents for inflammatory bowel disease, of whom 101 received biological agents for CD; 71 patients received ustekinumab, and 30 patients received vedolizumab. The baseline characteristics were similar except for perianal disease, which was frequently reported in ustekinumab arm (P = 0.006). Most of the patients were male (54.5%), with a median age of 32 (IQR: 26.0-38.0). Most patients (51.5%) had stricturing disease in the Ileocolonic site (70.3%). For ustekinumab, the median HBI score was 5 (IQR: 3.0 -8.0) whereas for vedolizumab, it was 5 (IQR: 4.0 -7.0). In table 1, a Bayesian multivariable proportional odds model revealed a 40% reduction in median HBI scores at 12 weeks favoring ustekinumab, with an aOR of 0.60 (95% CI: 0.25 to 1.31) and a probability of effectiveness of 75% for ustekinumab. At 12 weeks, the ordinal outcome scale was 39% lower for ustekinumab arm, with an aOR of 0.61 (95% CI: 0.26 to 1.35) and a probability of effectiveness of 73% for ustekinumab arm. Secondary endpoints showed favorable results for ustekinumab reaching up to a 90% probability of effectiveness.
Conclusion
Among CD patients who failed anti-TNF therapies, ustekinumab was more effective than vedolizumab. To validate these results and determine these treatments’ relative efficacy in managing CD, further investigations, including prospective studies and RCTs, are essential.
Presenting Author
Abdulhamid Althagafi Pharm.D.king Abdulaziz University
Authors
Lina Al Lehaibi Pharm.D, BCPS
Eastern Health Cluster, Saudi Arabia
Anfal al-Ali PharmD
Eastern Health Cluster
Ahmad Alamer PharmD
Prince Sattam bin Abdulaziz University
Fahad Aldhuwayan PharmD
Eastern Health Cluster
Saad Aldosarui md
Eastern Health Cluster
Zakia Almudhry md
Eastern Health Cluster
Abdulaziz Almulhim PharmD, BCPS
King Faisal University, College of Clinical Pharmacy, Department of pharmacy Practice
Mukhtar AlOmar Pharm D, BCPS
King Fahad Medical City
Saleh Alshowish pharmacy tech
Eastern Health Cluster