Summary
Background
The long‐term effects of anti‐TNFα therapy in ulcerative colitis are debatable.
Aim
To examine whether anti‐TNFα therapy changed the colectomy proportion and reduced the use of corticosteroids.
Methods
A nationwide cohort study among patients (age 0‐20) diagnosed with ulcerative colitis through 1995‐2015 from Danish health registries. We calculated the cumulative 5‐year risk of colectomy after diagnosis and used a Cox regression model for comparison between a historical pre‐anti‐TNFα cohort 1 (1995‐2003) and a cohort 2 for the era of anti‐TNFα (2004‐2015). Based on anti‐TNFα users, defined as patients who had at least four anti‐TNFα treatments within 4 months, we examined the subsequent need for corticosteroids.
Results
We identified 3001 patients from 1995 to 2015. The 5‐year cumulative proportion of colectomy in cohort 2 was 9.7% (95% confidence interval [CI] 8.4‐11.1) and 12.3% (95% CI 10.4‐14.6) in cohort 1. The adjusted 5‐year hazard ratio (HR) was 0.76 (95% CI 0.60‐0.96) for colectomy in cohort 2 compared to cohort 1. A total of 334 patients received anti‐TNFα treatments, and 16.8% (56/334) were prescribed corticosteroids in the subsequent 3‐month period. Corticosteroid treatment declined with follow‐up after 6 and 12 months, 5.4% and 1.2%, respectively.
Conclusion
In patient's ≤20 years, the HR for colectomy within a period of 5 years from the time of diagnosis was reduced in the era of anti‐TNFα compared to a historical cohort. In patients treated with anti‐TNFα, prescriptions of corticosteroids were virtually ceased after 12 months.