P3560 - Real-World Clinical Effectiveness and Safety of Vedolizumab and Ustekinumab in Bio-Naïve Patients With Non-Complicated Crohn’s Disease: Results from the EVOLVE Expansion Study
University Hospitals Leuven Leuven, Vlaams-Brabant, Belgium
Marc Ferrante, MD1, Britt Christensen, MD2, Brian Bressler, MD, MS, FRCPC3, Neil R.. Brett, PhD4, Lauren Gianchetti, MPH5, Pravin Kamble, PhD6, Shashi Adsul, MD, MBA6, Zeinab Farhat, PhD6, Michael Scharl, MD7 1University Hospitals Leuven, Leuven, Vlaams-Brabant, Belgium; 2University of Melbourne and Royal Melbourne Hospital, Melbourne, Victoria, Australia; 3St. Paul’s Hospital, Vancouver, BC, Canada; 4PPD, part of Thermo Fisher Scientific, Montreal, PQ, Canada; 5PPD, Part of Thermo Fisher Scientific, Philadelphia, PA; 6Takeda Pharmaceuticals, Cambridge, MA; 7University of Zurich, Zurich, Zurich, Switzerland
Introduction: Crohn’s disease (CD) complexity may affect treatment (Tx) outcomes. This analysis compared real-world clinical effectiveness and safety of vedolizumab (VDZ) and ustekinumab (UST) in bio-naïve patients with non-complicated CD.
Methods: EVOLVE Expansion (NCT05056441) was a multicenter, observational, retrospective study analyzing medical charts of bio-naïve patients with CD aged ≥ 18 who initiated VDZ or UST (index) from 2016 to 2021 in Australia, Belgium, or Switzerland. Outcomes in pts with non-complicated CD (defined as no active fistula at index, no prior CD-related surgeries, and no CD-related hospitalizations in 12 months prior to index) were evaluated in a subgroup analysis. Data were collected from index to chart abstraction initiation, Tx discontinuation, death, or loss to follow-up, whichever was first. Time-to-event analyses for clinical outcomes (clinical response, clinical remission, and mucosal healing, assessed using published algorithms1) and Tx persistence during 36 months of Tx were conducted using Kaplan-Meier method. Safety (serious adverse events [SAEs], serious infections [SIs]) and healthcare resource utilization (HCRU; CD exacerbations, CD-related hospitalizations, CD-related surgeries) were also analyzed. Baseline characteristics between cohorts were balanced using inverse probability of treatment weighting (IPTW).
Results: Overall, 425 pts (VDZ 244, UST 181) were included in this analysis. After IPTW, baseline characteristics were similar between groups (Table 1). During 36 months of Tx, weighted cumulative rates of clinical response (VDZ 85.0%, UST 85.6%; p=0.70), clinical remission (VDZ 93.3%, UST 91.3%, p=0.80), mucosal healing (VDZ 90.6%, UST 91.7%, p=0.14), and Tx persistence (VDZ 71.8%, UST 83.7%, p=0.07) were similar between both cohorts. During 36 months, risks of SAEs (HR=1.23; 95% CI, 0.62-2.46; p=0.55), SIs (HR=1.26; 95% CI 0.22-7.24; p=0.80), CD exacerbations (HR=1.09; 95% CI 0.74-1.61; p=0.66), CD-related surgeries (HR=1.11; 95% CI 0.47-2.62; p=0.82), and CD-related hospitalizations (HR=0.71; 95% CI 0.33-1.56; p=0.40) were similar between VDZ and UST cohorts.
Discussion: Over 36 months in a real-world clinical setting, cumulative rates of clinical response, clinical remission, mucosal healing, and Tx persistence, and rates of SAEs, SIs, and HCRU outcomes were not significantly different in patients with non-complicated CD who initiated VDZ or UST as a first-line biologic.
Reference: 1. Bressler B, et al. J Crohns Colitis. 2021;15(10):1694-1706.
Marc Ferrante, MD1, Britt Christensen, MD2, Brian Bressler, MD, MS, FRCPC3, Neil R.. Brett, PhD4, Lauren Gianchetti, MPH5, Pravin Kamble, PhD6, Shashi Adsul, MD, MBA6, Zeinab Farhat, PhD6, Michael Scharl, MD7. P3560 - Real-World Clinical Effectiveness and Safety of Vedolizumab and Ustekinumab in Bio-Naïve Patients With Non-Complicated Crohn’s Disease: Results from the EVOLVE Expansion Study, ACG 2023 Annual Scientific Meeting Abstracts. Vancouver, BC, Canada: American College of Gastroenterology.