Article

Clinical predictors at diagnosis of disabling pediatric Crohn's disease.

Gastroenterology Unit, EPIMAD Registry, Rouen University and Hospital, France.
Inflammatory Bowel Diseases (Impact Factor: 5.48). 01/2012; 18(11):2072-8. DOI: 10.1002/ibd.22898
Source: PubMed

ABSTRACT Identification of children with Crohn's disease (CD) at high risk of disabling disease would be invaluable in guiding initial therapy. Our study aimed to identify predictors at diagnosis of a subsequent disabling course in a population-based cohort of patients with pediatric-onset CD.
Among 537 patients with pediatric CD diagnosed at <17 years of age, 309 (57%) with 5-year follow-up were included. Clinical and demographic factors associated with subsequent disabling CD were studied. Three definitions of disabling CD were used: Saint-Antoine and Liège Hospitals' definitions and a new pediatric definition based on the presence at maximal follow-up of: 1) growth delay defined by body mass index (BMI), weight or height lower than -2 SD Z score; and 2) at least one intestinal resection or two anal interventions. Predictors were determined using multivariate analyses and their accuracy using the kappa method considering a relevant value ≥0.6.
According to the Saint-Antoine definition, the rate of disabling CD was 77% and predictors were complicated behavior and L1 location. According to the Liège definition, the rate was 37% and predictors included behavior, upper gastrointestinal disease, and extraintestinal manifestations. According to the pediatric definition, the rate of disabling CD was 15%, and predictors included complicated behavior, age <14, and growth delay at diagnosis. Kappa values for each combination of predictors were, respectively, 0.2, 0.3, and 0.2 and were nonrelevant.
Clinical parameters at diagnosis are insufficient to predict a disabling course of pediatric CD. More complex models including serological and genetic biomarkers should be tested. (Inflamm Bowel Dis 2012;).

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