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Guz-Mark, Anat; Perets, Tsachi Tsadok; Biran, Neta; Jack, Yifat; Zevit, Noam; Silbermintz, Ari; Matar, Manar; Nachmias-Friedler, Vered; Waisbourd-Zinman, Orith; Bar-Lev, Michal Rozenfeld; Huta, Yair; Ashorov, Olga; Gingold-Belfer, Rachel; Shamir, Raanan

Gluten Immunogenic Peptides Are Not Correlated With Reported Adherence to Gluten-Free Diet in Children With Celiac Disease

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  • Media type: E-Article
  • Title: Gluten Immunogenic Peptides Are Not Correlated With Reported Adherence to Gluten-Free Diet in Children With Celiac Disease
  • Contributor: Guz-Mark, Anat; Perets, Tsachi Tsadok; Biran, Neta; Jack, Yifat; Zevit, Noam; Silbermintz, Ari; Matar, Manar; Nachmias-Friedler, Vered; Waisbourd-Zinman, Orith; Bar-Lev, Michal Rozenfeld; Huta, Yair; Ashorov, Olga; Gingold-Belfer, Rachel; Shamir, Raanan
  • imprint: Wiley, 2023
  • Published in: Journal of Pediatric Gastroenterology & Nutrition
  • Language: English
  • DOI: 10.1097/mpg.0000000000003835
  • ISSN: 0277-2116
  • Origination:
  • Footnote:
  • Description: <jats:sec> <jats:title>Objective:</jats:title> <jats:p>There is no gold standard to assess adherence to gluten-free diet (GFD) among patients with celiac disease (CeD). Gluten immunogenic peptides (GIPs) in urine and stool were suggested as novel markers for evaluating adherence to GFD. Our aim was to assess the presence of GIP in pediatric patients with CeD, and to compare the results with alternative methods for evaluating GFD adherence.</jats:p> </jats:sec> <jats:sec> <jats:title>Methods:</jats:title> <jats:p>Pediatric patients diagnosed with CeD, who were on GFD for at least 1 year, were enrolled and followed prospectively between November 2018 and January 2021. Study visits included clinical assessment, a dietitian interview, Biagi score, food questionnaires, anthropometric and laboratory measurements, and urine and stool samples obtained for laboratory GIP analysis.</jats:p> </jats:sec> <jats:sec> <jats:title>Results:</jats:title> <jats:p>The study included 74 patients (63.5% females), with median (interquartile range, IQR) age of 9.9 (7.8–11.7) years, and median (IQR) duration on GFD of 2.5 (2–5.5) years. Good GFD adherence, assessed by Biagi score, was reported in 93.1% of cases. GIP was evaluated during 134 visits, with GIP detected in 27 of 134 (20.1%) of the visits (16.3% of stool samples and 5.3% of urine samples). Positive GIP results were significantly more common in males compared to females (30.6% vs 14.1%, respectively, <jats:italic toggle="yes">P</jats:italic> &lt; 0.05). Detection of positive GIP was not associated with dietary assessment of GFD adherence, celiac serology results, or reported symptoms.</jats:p> </jats:sec> <jats:sec> <jats:title>Conclusions:</jats:title> <jats:p>Stool and urine GIP can be detected in children with CeD, even when dietary assessment indicate good adherence to GFD. The role of GIP testing in clinical practice should be further explored.</jats:p> </jats:sec>