Early-Onset Inflammatory Bowel Disease

Area of Science:

• Pediatric Gastroenterology
• Immunology
• Genetics

Background:

• Epidemiology of inflammatory bowel disease (IBD) shows significant changes over 40 years.
• Increasing incidence and younger age of onset characterize current IBD trends.
• Early-onset IBD in children is increasingly linked to primary immunodeficiency and monogenic disorders.

Purpose of the Study:

• To highlight the evolving epidemiology of IBD.
• To emphasize the association between early-onset IBD and underlying genetic conditions.
• To underscore the importance of genetic diagnosis in guiding IBD management.

Main Methods:

• Review of epidemiological data on IBD incidence and age of onset.
• Analysis of studies identifying genetic causes in pediatric IBD cohorts.
• Comparison of management strategies based on identified etiologies.

Main Results:

• IBD incidence has risen dramatically, with a notable decrease in the age of onset.
• A significant proportion of the youngest IBD patients present with primary immunodeficiency or monogenic causes.
• Genetic etiologies necessitate distinct therapeutic approaches, differing from typical IBD management.

Conclusions:

• The changing landscape of IBD, particularly in children, necessitates a focus on underlying genetic and immunodeficiency disorders.
• Identification of specific genetic causes is crucial for optimizing treatment strategies.
• Hematopoietic cell transplantation is a viable and effective treatment for select genetic IBD cases.