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Phenotypes and endotypes in eosinophilic esophagitis.

Melanie A Ruffner1, Antonella Cianferoni1

  • 1Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia; Allergy and Immunology Division, The Children's Hospital of Philadelphia, Pennsylvania.

Annals of Allergy, Asthma & Immunology : Official Publication of the American College of Allergy, Asthma, & Immunology
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Summary

Eosinophilic esophagitis (EoE) presents differently in individuals, with distinct phenotypes and endotypes influencing treatment. Understanding these variations can lead to more personalized care for this complex atopic disorder.

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Area of Science:

  • Gastroenterology
  • Immunology
  • Genetics

Background:

  • Eosinophilic esophagitis (EoE) is an increasingly prevalent atopic disorder with complex and heterogeneous clinical presentations.
  • The disease can be challenging to treat, necessitating a deeper understanding of its underlying mechanisms.

Purpose of the Study:

  • To enhance comprehension of the diverse phenotypes and endotypes of eosinophilic esophagitis.
  • To explore differences in EoE presentation between pediatric and adult populations.

Main Methods:

  • A comprehensive review of English-language studies was conducted.
  • Data from abstracts, articles, and book chapters focusing on EoE genetics, natural history, treatment, phenotypes, and endotypes were critically assessed.

Main Results:

  • Emerging data suggest distinct phenotypes and endotypes in EoE, though findings across studies are sometimes incomparable.
  • EoE exhibits diverse clinical presentations (phenotypes) influenced by treatment response, natural history, and atopic comorbidities.
  • Potential endotypes include T Helper type 2 inflammation, epithelial barrier defects, fibrosis, and associations with monogenetic diseases.

Conclusions:

  • A better understanding of EoE phenotypes and endotypes is crucial for advancing patient care.
  • Individualized treatment strategies based on specific endotypes may lead to improved remission times and reduced need for endoscopies.