Efficacy of Consistency Versus Switching of Biologics for Prevention of Postoperative Recurrence in Crohn’s Disease: A Multicenter Real-World Retrospective Study

Abstract Importance In Crohn’s disease (CD) patients treated with biologics preoperatively, the optimal strategy for postoperative biologic management remains unclear. Design This was a retrospective multicenter study involving CD patients with ileocolonic anastomosis from 9 medical centers. Patients were divided into “the consistent group” (postoperative biologic previously used before surgery) and “the switched group” (postoperative biologic not used preoperatively). The primary endpoint was postoperative endoscopic recurrence (ER), which was defined as the first endoscopy performed between 6 and 18 months after surgery. Propensity score matching (PSM) was used to minimize baseline differences between groups, and conditional logistic regression was applied to identify factors associated with ER. Results In total, 227 patients were included in the study, of whom 177 were in the consistent group. No significant difference was observed in the rate of ER between the switched group and the consistent group (30.0% vs 40.7%, P = .170). In patients with ≤2 risk factors defined by established guidelines, the switched group showed a lower ER rate (20.6% vs 40.0%, P = .038). After 1:1 PSM, the switched group had a lower ER rate (29.4% vs 61.8%, P = .027). Conditional logistic regression analysis revealed that switching biologics was associated with a lower risk of ER (odds ratio = 0.31, 95% confidence interval, 0.11-0.85, P = .023). Conclusions In CD patients with preoperative biologic exposure, both continuing and switching biologic therapy postoperatively were effective in preventing ER, with switching showing improved endoscopic outcomes after adjustment for confounders.