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  • Title: Role of Serology, Dietary Assessment, and Fecal Gluten Immunogenic Peptides for Predicting Histologic Recovery in Children with Celiac Disease.
    Author: Seetharaman K, Lal SB, Prasad KK, Kumar Y, Bhatia A, Malhotra S.
    Journal: Dig Dis Sci; 2023 Feb; 68(2):529-540. PubMed ID: 36459294.
    Abstract:
    BACKGROUND: A strict lifelong gluten-free diet (GFD) remains the only treatment of celiac disease (CD). Adherence to gluten-free diet is best reflected by mucosal healing. Noninvasive tools capable of predicting mucosal recovery in CD patients need to be identified. AIMS: To compare the ability of various modalities used to assess compliance to GFD, for predicting persistent mucosal damage in children with CD. METHODS: A prospective, single-center, observational study on children with CD on a GFD was conducted between January 2020 and April 2021. Children with CD on GFD were consecutively enrolled and various modalities used to assess adherence to GFD were compared. RESULTS: One hundred and fifty children (Mean age 12.2 ± 3.6 years, 58% Boys) on GFD (Mean duration 6 ± 3.1 years) were enrolled in the study. Persistent mucosal damage was seen in 88% of the enrolled. Fecal gluten immunogenic peptide (GIP) was positive in 87.8% (129/147). Antibodies to tissue transglutaminase (TGA-IgA) and/or deamidated gliadin peptide (DGP) were positive in 32% (48/150) whereas antibody to synthetic neoepitopes of TGA-IgA was positive in 24.8% (37/149). Non-compliance as assessed by local questionnaire, Biagi score, and dietitian detailed interview were 62.7%, 60%, and 75.3%, respectively. Serology had the highest specificity (83%) and fecal GIP had the highest sensitivity (89%). On logistic regression analysis, only non-compliance by Biagi score predicted poor mucosal recovery. CONCLUSION: Fecal GIP may be sensitive to detect only "one-point dietary transgression." None of the existing modalities used to assess compliance to GFD accurately predict persistent mucosal damage. A subset of patients may develop gluten tolerance.
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