Prospective Bi-Centric Real-World Outcomes of Upadacitinib in Biologic-Experienced Patients with Crohn's Disease

The efficacy of upadacitinib in patients with Crohn's disease (CD) has been shown in pivotal randomized controlled trials. However, real-world data is needed to assess its effectiveness and safety in routine clinical care with biologic-experienced patients. This study aimed to evaluate the clinical and endoscopic efficacy, patient-reported outcomes (PROs), and safety of upadacitinib in biologic-experienced patients with CD in a real-world setting.

This prospective bi-centric real-world study enrolled 28 anti-TNF-experienced patients with CD receiving upadacitinib 45 mg daily for 12 weeks (induction), followed by 30 mg daily maintenance through week 52. Primary endpoints included endoscopic response (≥50% SES-CD reduction or ≥2-point decrease from baseline for baseline SES-CD ≤ 4) and clinical remission (Harvey-Bradshaw Index [HBI] ≤ 4). Secondary endpoints included endoscopic remission, clinical response (HBI decrease ≥ 3 points), and quality of life (IBD-Disk). Statistical analysis used the Wilcoxon signed-rank test with 95% confidence intervals (CIs).

Median patient age was 37 years; 75% had ≥3 prior biologic failures. Clinical remission rates (HBI) were 59% (95% CI: 41-75%) at week 12, 44% (95% CI: 27-63%) at week 26, and 53% (95% CI: 29-76%) at week 52. Endoscopic response rates were 48% (95% CI: 44-52%) at week 26 and 46% (95% CI: 21-72%) at week 52. Endoscopic remission was achieved in 43% (95% CI: 40-48%) at week 26 and 27% (95% CI: 10-57%) at week 52. Clinical response (HBI) improved progressively from 65% at week 2 to 71% at week 52. Quality of life, as assessed by the IBD-Disk, showed significant improvement: Reduced Disease Burden (defined as a decrease of 70% or a CED-Disk Score of ≤15) was observed in 33% of patients at week 12 and 35% at week 52. Median SES-CD decreased from 9 points (IQR: 6-17) at baseline to 5 points (IQR: 1-12, p = 0.005) at week 52. Adverse events occurred in 11% of patients (4% lymphopenia, 7% skin disease), with no serious adverse events or deaths.

Upadacitinib demonstrates significant clinical and endoscopic efficacy in biologic-experienced, anti-TNF-pretreated patients with CD, achieving remission rates comparable to or exceeding those of the pivotal trials despite a highly refractory population (75% with ≥3 prior biologic failures). The favorable safety profile supports upadacitinib as an important therapeutic option in sequential treatment of refractory CD.