Posttreatment Gene Scores Support Histologic and Endoscopic Response Thresholds in Eosinophilic Esophagitis.

Ruffner, Melanie A; Cotton, Cary C; Dellon, Evan S · Am J Gastroenterol · 2022

prospective_cohort · Level II

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Abstract

The correlation between clinical and molecular treatment response thresholds in eosinophilic esophagitis (EoE) is not well understood. We evaluated posttreatment EoE diagnostic panel gene expression profiles across histologic and endoscopic thresholds (EREFS) in a prospective adult EoE cohort. We observed a strong inverse correlation between posttreatment gene score and eosinophil count (R = -0.66; P < 0.001); biopsies with <15 eos/hpf had higher gene scores (≥425) vs those with ≥15 eos/hpf. Findings for EREFS were similar; EREFS ≤2 was associated with EoE diagnostic panel scores ≥395. Molecular signatures support the use of posttreatment response thresholds <15 eos/hpf and EREFS ≤2 in clinical practice and trials.

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