Case Series: Re-induction of Intravenous, Weight-Based Ustekinumab Is Well Tolerated in Patients With Moderate–Severe Crohn’s Disease

BACKGROUND: Crohn’s disease (CD) patients may benefit from biologic optimization. METHODS: We retrospectively assessed adverse events (AEs) and clinical/endoscopic response after ustekinumab re-induction in CD patients. RESULTS: We identified 28 patients, all with prior biologic exposure. Eight weeks following re-induction, 10.7% reported ≥1 AE. Three serious AEs occurred in a single patient (CD flares). No infusion reactions occurred. 53.8% and 38.5% achieved clinical response and remission, respectively. 42.8% achieved both endoscopic improvement and remission. CONCLUSIONS: Ustekinumab re-induction was well tolerated. Clinical and endoscopic disease activity improved in some patients. Further larger studies are needed to verify these findings in a broader population.