Identification of Gluten Sensitivity in Irritable Bowel Syndrome

NCT04017585 | Completed DMC

• 1 other identifier: Policlinic Hospital 5, Bari
• Study Type: interventional
• Target: 40
• Locations: 1 country
• Sites: 1

Brief Summary

The aim of our study will be to establish in how many subjects with gastrointestinal symptoms and previous diagnosis of irritable bowel syndrome (IBS), the clinical picture is attributable to non celiac gluten sensitivity (NCGS) or fermentable oligosaccharides, disaccharides, monosaccharides and polyols (FODMAPs) intolerance. For this purpose, all subjects with IBS will take a low FODMAPs diet, which implies the absence of cereals and consequently of gluten, and those presenting symptom improvement during this dietary treatment, will be exposed to a double-blind gluten or placebo challenge, to make a diagnosis of NCGS.

Conditions

Non-celiac Gluten Sensitivity; Irritable Bowel Syndrome

Keywords

gluten free diet; FODMAPs; gastrointestinal symptoms

Outcome Measures

Primary Outcomes (2)

• Identification of FODMAP intollerance in IBS subjects

  To evaluate the FODMAP intolerance, the response to a low FODMAP diet will be assessed by a visual analogue scale (VAS) before and after the dietary challenge. The VAS scale consists in is a straight horizontal line of fixed length, usually 100 mm. The ends are defined as the extreme limits of the parameter to be measured (symptoms, pain, subjective feeling of well-being/malaise) orientated from the left (worst) to the right (best) The patient is invited to indicate a position (a point) along the line.

  4 weeks

• Identification of NCGS in IBS subjects who responded to low FODMAPs diet

  To evaluate the NCGS, the response to the gluten challenge will be assessed by a visual analogue scale (VAS) before and after the dietary challenge. The VAS scale consists in is a straight horizontal line of fixed length, usually 100 mm. The ends are defined as the extreme limits of the parameter to be measured (symptoms, pain, subjective feeling of well-being/malaise) orientated from the left (worst) to the right (best) The patient is invited to indicate a position (a point) along the line.

  3 weeks

Study Arms (2)

patients with IBS treated with gluten

ACTIVE COMPARATOR

patients receiving gluten

Dietary Supplement: diet containing gluten

patients with IBS treated with placebo

PLACEBO COMPARATOR

patients receiving placebo

Dietary Supplement: Diet containing placebo

Interventions

diet containing gluten DIETARY_SUPPLEMENT

gluten will be added for 7 days to the low FODMAP/gluten free diet diet. After 1 week of wash-out, patients will switch (cross-over) to placebo for another 7 days

patients with IBS treated with gluten

Diet containing placebo DIETARY_SUPPLEMENT

Placebo will be added for 7 days to the low FODMAP/gluten free diet diet. After 1 week of wash-out, patients will switch (cross-over) to gluten for another 7 days

patients with IBS treated with placebo

Eligibility Criteria

• Age: 18 Years - 70 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• a gluten-containing diet for at least six months before enrollment
• anti-transglutaminase antibodies (IgA and IgG) absence
• normal serum IgA levels
• prick and specific IgE tests for wheat allergy negative

You may not qualify if:

• celiac disease
• wheat allergy
• chronic intestinal inflammatory diseases
• psychiatric disorders
• major abdominal surgery (in particular intestinal resections)
• diabetes mellitus
• previous anaphylactic episodes
• gluten-free diet in the previous six months
• pregnant or lactating women.

Sponsors & Collaborators

• University of Bari: lead

Study Sites (1)

Michele Barone

Bari, BA, 70124, Italy

Location

Related Publications (9)

• Catassi C, Elli L, Bonaz B, Bouma G, Carroccio A, Castillejo G, Cellier C, Cristofori F, de Magistris L, Dolinsek J, Dieterich W, Francavilla R, Hadjivassiliou M, Holtmeier W, Korner U, Leffler DA, Lundin KE, Mazzarella G, Mulder CJ, Pellegrini N, Rostami K, Sanders D, Skodje GI, Schuppan D, Ullrich R, Volta U, Williams M, Zevallos VF, Zopf Y, Fasano A. Diagnosis of Non-Celiac Gluten Sensitivity (NCGS): The Salerno Experts' Criteria. Nutrients. 2015 Jun 18;7(6):4966-77. doi: 10.3390/nu7064966.

  PMID: 26096570 RESULT

• Catassi C, Alaedini A, Bojarski C, Bonaz B, Bouma G, Carroccio A, Castillejo G, De Magistris L, Dieterich W, Di Liberto D, Elli L, Fasano A, Hadjivassiliou M, Kurien M, Lionetti E, Mulder CJ, Rostami K, Sapone A, Scherf K, Schuppan D, Trott N, Volta U, Zevallos V, Zopf Y, Sanders DS. The Overlapping Area of Non-Celiac Gluten Sensitivity (NCGS) and Wheat-Sensitive Irritable Bowel Syndrome (IBS): An Update. Nutrients. 2017 Nov 21;9(11):1268. doi: 10.3390/nu9111268.

  PMID: 29160841 RESULT

• Van den Houte K, Carbone F, Pannemans J, Corsetti M, Fischler B, Piessevaux H, Tack J. Prevalence and impact of self-reported irritable bowel symptoms in the general population. United European Gastroenterol J. 2019 Mar;7(2):307-315. doi: 10.1177/2050640618821804. Epub 2018 Dec 22.

  PMID: 31080615 RESULT

• Jones AL. The Gluten-Free Diet: Fad or Necessity? Diabetes Spectr. 2017 May;30(2):118-123. doi: 10.2337/ds16-0022. No abstract available.

  PMID: 28588378 RESULT

• Calasso M, Francavilla R, Cristofori F, De Angelis M, Gobbetti M. New Protocol for Production of Reduced-Gluten Wheat Bread and Pasta and Clinical Effect in Patients with Irritable Bowel Syndrome: A randomised, Double-Blind, Cross-Over Study. Nutrients. 2018 Dec 2;10(12):1873. doi: 10.3390/nu10121873.

  PMID: 30513824 RESULT

• Junker Y, Zeissig S, Kim SJ, Barisani D, Wieser H, Leffler DA, Zevallos V, Libermann TA, Dillon S, Freitag TL, Kelly CP, Schuppan D. Wheat amylase trypsin inhibitors drive intestinal inflammation via activation of toll-like receptor 4. J Exp Med. 2012 Dec 17;209(13):2395-408. doi: 10.1084/jem.20102660. Epub 2012 Dec 3.

  PMID: 23209313 RESULT

• Carroccio A, Rini G, Mansueto P. Non-celiac wheat sensitivity is a more appropriate label than non-celiac gluten sensitivity. Gastroenterology. 2014 Jan;146(1):320-1. doi: 10.1053/j.gastro.2013.08.061. Epub 2013 Nov 22. No abstract available.

  PMID: 24275240 RESULT

• Drossman DA. Functional Gastrointestinal Disorders: History, Pathophysiology, Clinical Features and Rome IV. Gastroenterology. 2016 Feb 19:S0016-5085(16)00223-7. doi: 10.1053/j.gastro.2016.02.032. Online ahead of print.

  PMID: 27144617 RESULT

• Barone M, Gemello E, Viggiani MT, Cristofori F, Renna C, Iannone A, Di Leo A, Francavilla R. Evaluation of Non-Celiac Gluten Sensitivity in Patients with Previous Diagnosis of Irritable Bowel Syndrome: A Randomized Double-Blind Placebo-Controlled Crossover Trial. Nutrients. 2020 Mar 6;12(3):705. doi: 10.3390/nu12030705.

  PMID: 32155878 DERIVED

MeSH Terms

Conditions

Irritable Bowel Syndrome

Condition Hierarchy (Ancestors)

Colonic Diseases, Functional; Colonic Diseases; Intestinal Diseases; Gastrointestinal Diseases; Digestive System Diseases

Study Officials

• Michele Barone

  University of Bari

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, INVESTIGATOR
• Purpose: DIAGNOSTIC
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Professor

Model Details: Interventional study

Study Record Dates

• First Submitted: July 8, 2019
• First Posted: July 12, 2019
• Study Start: April 8, 2019
• Primary Completion: September 30, 2019
• Study Completion: October 30, 2019
• Last Updated: December 27, 2019

Record last verified: 2019-12

Data Sharing

• IPD Sharing: Will not share

Locations

IT (1)