Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Comparative Performance of Stool Gluten Immunogenic Peptide Platforms for Monitoring Adherence to the Gluten-Free Diet

Version 1 : Received: 23 May 2024 / Approved: 24 May 2024 / Online: 24 May 2024 (13:53:49 CEST)

How to cite: Stefanolo, J. P.; Puebla, R.; Talamo, M.; Dodds, S.; Temprano, M. D. L. P.; Oregui, M. E.; Espinet, M. L.; Smecuol, E.; Niveloni, S. I.; Bai, J. C. Comparative Performance of Stool Gluten Immunogenic Peptide Platforms for Monitoring Adherence to the Gluten-Free Diet. Preprints 2024, 2024051632. https://doi.org/10.20944/preprints202405.1632.v1 Stefanolo, J. P.; Puebla, R.; Talamo, M.; Dodds, S.; Temprano, M. D. L. P.; Oregui, M. E.; Espinet, M. L.; Smecuol, E.; Niveloni, S. I.; Bai, J. C. Comparative Performance of Stool Gluten Immunogenic Peptide Platforms for Monitoring Adherence to the Gluten-Free Diet. Preprints 2024, 2024051632. https://doi.org/10.20944/preprints202405.1632.v1

Abstract

Background/Aim: Stool gluten immunogenic peptides (GIP) determination is now considered a valuable tool for detecting dietary lapses in treated celiac disease (CeD) patients. Our study aims to explore the diagnostic performance of a qualitative lateral flow immunoassay point-of-care test (LFIA/PoCT) compared with a qualitative enzyme-linked immunosorbent assay (ELISA) for detection of stool GIP. Methods: The study is a post hoc analysis of stool samples collected in the real-life conditions from a cohort of gluten-free diet-treated CeD patients. Stool GIP was measured in µg/g of stool using an ELISA kit (iVYLISA GIP S®, Biomedal SL). For the qualitative evaluation of stool GIP, a LFIA/PoCT test (GlutenDetect®; Biomedal S.L) was employed, which reported results as positive or negative. The LFIA/PoCT performance was evaluated against ELISA, considered as the gold standard. GIP concentrations

Keywords

Celiac disease; follow-up; stool gluten immunogenic peptides; gluten exposure; gluten-free diet

Subject

Medicine and Pharmacology, Gastroenterology and Hepatology

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