Targeted Food Elimination for Treatment of Functional Gastrointestinal Diseases in Children

Functional Gastrointestinal Disorders Clinical Trial

— FGID  

Official title:

Randomized Controlled Trial of Food Elimination Based on IgG Antibodies for Treatment of Functional Gastrointestinal Diseases (FGIDs) in Children

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT02565355
• Other study ID #: 106580
• Status: Completed
• Phase: N/A
• First received: September 9, 2015
• Last updated: September 29, 2017
• Start date: September 2015
• Est. completion date: August 2017

Study information

• Verified date: August 2017
• Source: Lawson Health Research Institute
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Recurrent Abdominal Pain (RAP) in children is common and causes significant functional impairment and poor quality of life. Lifestyle factors such as diet, anxiety, and stress are important triggers of abdominal pains, but there is lack of high quality research evidence on optimal treatment modalities in children. This study aims to evaluate the effect of food elimination on abdominal pain frequency and severity in a cohort of children with abdominal pain associated Functional Gastrointestinal Diseases (FGID). The primary outcome will be a comparison of abdominal pain frequency and severity between standard therapy and targeted food elimination, based on IgG antibody results to a multiple food antigen panel. The investigators anticipate that 'targeted dietary elimination' as a treatment strategy will resolve abdominal pain and improve quality of life in children.

Description:

Randomized controlled single center trial. Setting: Outpatient pediatric gastroenterology (PG) clinic, Children's Hospital, London, Canada. Methodology: After a 4 week run in period, 60 children aged 5-18 years, meeting Rome 3 inclusion criteria for abdominal pain associated FGID will be recruited to the trial. After informed consent, the participants will be randomized to either a standard treatment or lifestyle modification (dietary elimination) group in the ratio of 1:1. IgG testing to food antigens will be completed in both groups using a commercially available specific IgG ELISA-based multiple food allergen panel but will ONLY be disclosed for the lifestyle modification group. The patient will receive specific advice by a dietitian to exclude a maximum of two food items from his/her diet for 4 weeks. Children will be followed-up in PG clinic at 4-weekly intervals for 16 weeks. At every clinic visit, Diary of food intake, Abdominal Pain Index (API) and Quality of Life (QOL) questionnaire will be completed by both child and parent. The standard therapy group will receive conventional treatment for Abdominal Pain (AP) as per usual practice at the PG Clinic. Response is defined as more than 50% improvement in frequency and severity of abdominal pain. At each follow up visit, non-responders will cross over to the other arm of the study. At the end of the trial, non-responders in either group will continue to receive conventional treatment in the PG Clinic. Responders will be discharged back to their family physicians. Data will be analyzed using IBM SPSS Statistics, version 22.0.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 60
• Est. completion date: August 2017
• Est. primary completion date: August 2017
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 5 Years to 18 Years

Eligibility

Inclusion Criteria:

1. Children 5-18 years of age with a diagnosis of Abdominal Pain-related FGIDs (Functional Abdominal Pain , FAP syndrome, Functional Dyspepsia, Irritable Bowel Syndrome, Abdominal Migraine) as defined by the Rome 3 criteria.

2. Acquisition of informed consent

Exclusion Criteria:

1. Children less than 5 years of age

2. Organic cause of abdominal pain established by investigations (e.g. Crohn's disease)

3. Diagnosis of failure-to-thrive or co-morbid chronic physical disease (e.g., Diabetes)

4. Any medical condition that in the opinion of the investigator would be unsafe for trial participation.

5. Lack of follow-up or failure to comply with study procedures.

Related Conditions & MeSH terms

• Abdominal Pain
• Abdominal Pain (AP)
• Digestive System Diseases
• Functional Abdominal Pain Syndrome
• Functional Gastrointestinal Disorders
• Gastrointestinal Diseases

Intervention

Other:
• Dietary Exclusion
The IgG antibody results will be disclosed ONLY to the patients in the lifestyle modification group by phone approximately one week after clinic visit.. 'Dietary Exclusion' will be advised by a dietitian. Patients are advised to eliminate a maximum of two foods as identified by high IgG antibody titres.
• Standard Treatment
The standard therapy group will receive conventional treatment for Abdominal Pain as per usual practice at the Pediatric GI (PG) Clinic - counseling, reassurance, improving coping strategies and pain relievers as appropriate.

Locations

Country	Name	City	State
n/a

Sponsors (2)

Lead Sponsor	Collaborator
Lawson Health Research Institute	University of Western Ontario, Canada

References & Publications (13)

American Academy of Pediatrics Subcommittee on Chronic Abdominal Pain; North American Society for Pediatric Gastroenterology Hepatology, and Nutrition. Chronic abdominal pain in children. Pediatrics. 2005 Mar;115(3):e370-81. Review. — View Citation

Carlson MJ, Moore CE, Tsai CM, Shulman RJ, Chumpitazi BP. Child and parent perceived food-induced gastrointestinal symptoms and quality of life in children with functional gastrointestinal disorders. J Acad Nutr Diet. 2014 Mar;114(3):403-13. doi: 10.1016/j.jand.2013.10.013. Epub 2013 Dec 19. — View Citation

Christensen MF, Mortensen O. Long-term prognosis in children with recurrent abdominal pain. Arch Dis Child. 1975 Feb;50(2):110-4. — View Citation

Chumpitazi BP, Cope JL, Hollister EB, Tsai CM, McMeans AR, Luna RA, Versalovic J, Shulman RJ. Randomised clinical trial: gut microbiome biomarkers are associated with clinical response to a low FODMAP diet in children with the irritable bowel syndrome. Aliment Pharmacol Ther. 2015 Aug;42(4):418-27. doi: 10.1111/apt.13286. Epub 2015 Jun 24. — View Citation

Crandall WV, Halterman TE, Mackner LM. Anxiety and pain symptoms in children with inflammatory bowel disease and functional gastrointestinal disorders undergoing colonoscopy. J Pediatr Gastroenterol Nutr. 2007 Jan;44(1):63-7. — View Citation

Erhart M, Ellert U, Kurth BM, Ravens-Sieberer U. Measuring adolescents' HRQoL via self reports and parent proxy reports: an evaluation of the psychometric properties of both versions of the KINDL-R instrument. Health Qual Life Outcomes. 2009 Aug 26;7:77. doi: 10.1186/1477-7525-7-77. — View Citation

Huertas-Ceballos A, Logan S, Bennett C, Macarthur C. Dietary interventions for recurrent abdominal pain (RAP) and irritable bowel syndrome (IBS) in childhood. Cochrane Database Syst Rev. 2008 Jan 23;(1):CD003019. doi: 10.1002/14651858.CD003019.pub2. Review. Update in: Cochrane Database Syst Rev. 2009;(1):CD003019. — View Citation

Huertas-Ceballos AA, Logan S, Bennett C, Macarthur C, Martin AE. WITHDRAWN: Pharmacological interventions for recurrent abdominal pain (RAP) and irritable bowel syndrome (IBS) in childhood. Cochrane Database Syst Rev. 2014 Feb 17;(2):CD003017. doi: 10.1002/14651858.CD003017.pub3. Review. — View Citation

Laird KT, Sherman AL, Smith CA, Walker LS. Validation of the Abdominal Pain Index using a revised scoring method. J Pediatr Psychol. 2015 Jun;40(5):517-25. doi: 10.1093/jpepsy/jsu118. Epub 2015 Jan 22. — View Citation

Miele E, Simeone D, Marino A, Greco L, Auricchio R, Novek SJ, Staiano A. Functional gastrointestinal disorders in children: an Italian prospective survey. Pediatrics. 2004 Jul;114(1):73-8. — View Citation

Ong DK, Mitchell SB, Barrett JS, Shepherd SJ, Irving PM, Biesiekierski JR, Smith S, Gibson PR, Muir JG. Manipulation of dietary short chain carbohydrates alters the pattern of gas production and genesis of symptoms in irritable bowel syndrome. J Gastroenterol Hepatol. 2010 Aug;25(8):1366-73. doi: 10.1111/j.1440-1746.2010.06370.x. — View Citation

Rasquin A, Di Lorenzo C, Forbes D, Guiraldes E, Hyams JS, Staiano A, Walker LS. Childhood functional gastrointestinal disorders: child/adolescent. Gastroenterology. 2006 Apr;130(5):1527-37. — View Citation

Varni JW, Lane MM, Burwinkle TM, Fontaine EN, Youssef NN, Schwimmer JB, Pardee PE, Pohl JF, Easley DJ. Health-related quality of life in pediatric patients with irritable bowel syndrome: a comparative analysis. J Dev Behav Pediatr. 2006 Dec;27(6):451-8. — View Citation

* Note: There are 13 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Abdominal Pain Index: Child Form and Parent Proxy Form	Primary Outcome: The Abdominal Pain (AP) frequency and severity is calculated in each clinic visit using a 4 point questionnaire - the validated Abdominal Pain Index (API): Child Form and Parent Proxy form for age range 8 to 18 years. For age range 5 to 7 years, only the Abdominal Pain Index: Parent proxy form will be used. The 4 point scale measures the frequency of abdominal pain (Scores range 0-none to 5-every day and constant), duration of abdominal pain (scores range 0-no pain to 5-all day) and severity of abdominal pain (scores range from 0-no pain to 10-most pain). Improvement in AP is defined as >50% reduction in frequency and severity of AP in food elimination and standard treatment groups.	4 week run in period to Visit 5 (Week 16)
Secondary	KINDL Questionnaire for Measuring Health-Related Quality of Life in Children and Adolescents	The KINDL Questionnaire: self report and parent proxy versions will be used for different age groups. The KINDL questionnaire consists of 24 Likert-scaled items associated with six dimensions:physical well-being, emotional well-being, self-esteem, family, friends and everyday functioning (school or nursery school/kindergarten). The sub-scales of these six dimensions can be combined to produce a total score.	4 week run in period to Visit 5 (Week 16)
Secondary	Patient Compliance	Compliance with dietary exclusion in dietary exclusion group at visits 3, 4 and 5. Compliance with conventional treatment in standard group at visits 3, 4 and 5. Adherence to advice and treatment will be measured by clinician impression at visits in both groups. (measured by consistency of completion of diaries and patient reporting of adherence to medical advice).	4 week run in period to Visit 5 (Week 16)