Epidemiology, risk factors and natural history of eosinophilic esophagitis in patients with inflammatory bowel disease: a population-based cohort study from the United States.

BACKGROUND

Eosinophilic esophagitis (EoE) and inflammatory bowel disease (IBD) are immunemediated disorders whose coexistence is incompletely defined.

METHODS

We conducted a cohort study using the TriNetX database, examining a cohort of patients with IBD and EoE over the period 2013-2022. We stratified the cohort by type of IBD, age, sex and race, to assess the incidence and risk factors for the development of EoE in patients with IBD. Additionally, we evaluated the 5-year risk of EoE-specific outcomes in patients with and without IBD.

RESULTS

Among 234,582 IBD patients (mean age 45.4 years; 52.5% female; 74.8% White; 52.8% Crohn's disease [CD]), EoE incidence was 0.60% in ulcerative colitis (UC) and 0.83% in CD, highest in 30-34yearold White males. IBD increased EoE risk vs. matched nonIBD controls (adjusted odds ratio [aOR] 2.88, 95% confidence interval [CI] 2.59-3.19). Risk factors in UC were age <40 years (aOR 1.82, 95%CI 1.53-2.16) and male sex (aOR 1.83, 95%CI 1.56-2.15). In CD, age <40 years (aOR 2.71, 95%CI 2.35-3.13), male sex (aOR 1.81, 95%CI 1.58-2.06), obesity (aOR 1.41, 95%CI 1.13-1.75), and prior intestinal surgery (aOR 1.22, 95%CI 1.10-1.50) were significant. After PSM, concurrent IBD reduced the 5year composite risk of esophageal dilation and/or dupilumab use (aOR 0.39, 95%CI 0.29-0.52) compared with EoE alone.

CONCLUSIONS

IBD confers roughly 3fold higher odds of EoE. Younger age and male sex are universal risk factors; obesity and surgery are risk factors in CD. EoE complicating IBD is associated with fewer fibrostenotic sequelae than isolated EoE.