Related Experiment Video
Updated: Sep 20, 2026

Evaluating Therapeutic Interventions in the SHIP-deficient Mouse Model of Crohn Disease-like Ileitis and Fibrosis
Published on: October 14, 2025
Response to infliximab is related to disease duration in paediatric Crohn's disease
P Lionetti1, F Bronzini, C Salvestrini
1Dipartimento di Pediatria, Università di Firenze-Ospedale Meyer, Florence, Italy.
Insights
Infliximab effectively treats pediatric Crohn's disease, especially early-stage cases. Children with early Crohn's disease show a better long-term response to infliximab compared to those with late-stage disease.
Area of Science:
- Pediatric Gastroenterology
- Immunology
- Inflammatory Bowel Disease Research
Background:
- Infliximab is a proven therapy for adult Crohn's disease.
- Limited data exists on its use in pediatric populations.
- Crohn's disease in children presents unique challenges.
Purpose of the Study:
- Evaluate infliximab efficacy in pediatric Crohn's disease.
- Assess treatment outcomes in refractory and fistulizing cases.
- Compare response duration between early and late-stage pediatric Crohn's disease.
Main Methods:
- Retrospective analysis of 22 children and adolescents receiving infliximab.
- Treatment indications included refractory and/or fistulizing Crohn's disease.
- Disease duration categorized as early (<1 year) or late (>1 year).
Main Results:
- Significant reduction in Paediatric Crohn's Disease Activity Index (PCDAI) observed.
- Mean PCDAI decreased from 41.2 to 15.4 by 18 weeks.
- Higher fistula closure rates and prolonged response in early-stage disease patients.
Conclusions:
- Infliximab demonstrates high efficacy in pediatric refractory and fistulizing Crohn's disease.
- Early diagnosis and treatment correlate with better long-term infliximab response.
- Infliximab offers a valuable therapeutic option for severe pediatric Crohn's disease.
Background:
Infliximab is an effective therapy in adult patients with refractory and fistulizing Crohn's disease. Experience in children is still limited.
Aim:
: To evaluate the experience in 22 children and adolescents treated with infliximab with refractory and/or fistulizing Crohn's disease, and to compare duration of response in children between early Crohn's disease and late Crohn's disease.
Methods:
The experience in 22 children and adolescents treated with a total of 73 infusions was evaluated retrospectively. Treatment indication was refractory Crohn's disease in 9/22 patients, fistulizing Crohn's disease in 7/22 patients and both these conditions in 6/22. All patients with refractory Crohn's disease had late Crohn's disease (> 1 year), whereas 6/13 patients with fistulas had early disease (< 1 year).
Results:
Mean Paediatric Crohn's Disease Activity Index (PCDAI) decreased from 41.2 to 16.2 at 4 weeks (P < 0.01), and to 15.4 at 18 weeks (P < 0.01). Mean PCDAI at 18 weeks in children with early Crohn's disease and late Crohn's disease was 5.5 and 18.1, respectively (P < 0.05). Complete closure of fistulas was obtained in 5/6 children with early Crohn's disease and in 2/7 children with late Crohn's disease. Immediate adverse reactions were observed in two children.
Conclusions:
Infliximab is a highly effective treatment in children and adolescents with both severe refractory or fistulizing Crohn's disease. Children with early Crohn's disease have a higher chance of prolonged response to infliximab than children with late Crohn's disease.
Related Concept Videos
Drugs for Treatment of Crohn's Disease in IBD Using Biologic Agents: Anti-TNF
Drugs for Treatment of Crohn's Disease in IBD Using Immunomodulatory Agents
Drugs for Treatment of Crohn's Disease in IBD Using Glucocorticoids
Inflammatory Bowel Disease III: Crohn's Disease
Inflammatory Bowel Disease II: Crohn's Disease
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by transmural...
Inflammatory Bowel Disease IV: Pharmacological Management
Pharmacologic...