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  • Title: Eosinophilic Gastritis and Enteritis Are Increased in Families With Eosinophilic Esophagitis.
    Author: Allen-Brady K, Colletier KJ, Woller S, Eliason K, Uchida AM, Ro G, Newman M, Peterson KA.
    Journal: Am J Gastroenterol; 2023 Feb 01; 118(2):263-268. PubMed ID: 36148824.
    Abstract:
    INTRODUCTION: There are limited data on the familial risk of distal eosinophilic gastrointestinal diseases (EGIDs) in patients with eosinophilic esophagitis (EoE). We analyzed the risk of eosinophilic gastritis/gastroenteritis (EG/EGE) and eosinophilic colitis (EC) as forms of distal EGIDs using International Disease Classification-9/10 codes in subjects with EoE and their relatives. METHODS: The Utah Population Database is a resource that links genealogy information and medical records in Utah. We identified EGIDs in probands and their first-degree (FDRs), second-degree (SDRs), and third-degree (TDRs) relatives in the Utah Population Database. Relative risk and 95% confidence intervals were estimated. All individuals with inflammatory bowel disorder were eliminated to avoid misdiagnosis with EGIDs. RESULTS: We included 8,455 subjects with EoE, 396 with EG/EGE, and 172 with EC. Probands with EoE were at increased risk of EG/EGE and EC. Risks of EG/EGE were increased among FDRs and SDRs of probands with EoE , even without concomitant EoE in the relatives. Increased risk of EG/EGE in FDRs and SDRs was also present for EoE probands without EG/EGE or EC. We observed no isolated familial aggregation of EG/EGE after excluding cases with comorbid EoE. EC probands without EoE were at increased risk of EG/EGE, but no evidence of familial risk of EC was observed. DISCUSSION: The relative risk of EG/EGE is significant among relatives of patients with EoE, suggesting that shared genetic factors exist among these EGIDs. EG/EGE and EC showed limited familial clustering, although sample sizes were small.
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