- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT06288672
Étude sur les allergies alimentaires au test de patch cutané IBS
Une étude multicentrique randomisée, en double aveugle, contrôlée par placebo, sur l'évitement alimentaire des allergènes alimentaires de type 4 guidé par des tests épicutanés pour le syndrome du côlon irritable
Participants with IBS are skin patch tested (no needles) to 80 different foods and food additives, compounded for patch testing, in search of food allergies. The testing requires 3 office visits within a 4 or 5 day period. The patches are taped to the back at Visit #. At Visit #2 48 hours later, the patches are removed from the skin and the outside border of each patch is marked with a felt tip marker. At Visit #3 (final visit) 1 or 2 days later, the patch test reading is performed by the doctor-investigator. An allergy is identified as a small red mark where the food was in contact with the skin for 48 hours. Those participants found to have food allergies are then placed on an avoidance diet (no calorie restriction) for 16 weeks where they either avoid eating the food(s) to which they are allergic (the "true" avoidance diet) or food(s) to which the testing did not show an allergy (this is called the "sham" avoidance diet). There is a 50/50 chance of going on either avoidance diet. The avoidance diet is assigned in such a way that neither the participant or the doctor-investigator knows which diet is being followed. After the 16 weeks, the participants answers a brief online questionnaire that asks about the IBS symptoms while following the avoidance diet. After the 16 week avoidance diet and final questionnaire are completed, those participants who were on the sham diet will be told of their true food allergies which they may try avoiding on their own.
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
See above. When all 250 study participants have finished all parts of the study, the results will be made known to the doctor-investigators for data analysis.
Type d'étude
Inscription (Estimé)
Phase
- N'est pas applicable
Contacts et emplacements
Coordonnées de l'étude
- Nom: Michael B Stierstorfer, MD
- Numéro de téléphone: 215-699-1929
- E-mail: mbstierstorfer@gmail.com
Sauvegarde des contacts de l'étude
- Nom: Sally Iles, BSN, MBA
- Numéro de téléphone: 617-922-1130
- E-mail: sallyiles3@gmail.com
Lieux d'étude
-
-
Pennsylvania
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North Wales, Pennsylvania, États-Unis, 19454
- Recrutement
- North Wales Dermatology, PLLC
-
Contact:
- Michael B Stierstorfer, MD
- Numéro de téléphone: 215-699-1929
- E-mail: mbstierstorfer@gmail.com
-
Contact:
- Sally Iles, BSN, MBA
- Numéro de téléphone: 617-922-1130
- E-mail: SallyIles3@gmail.com
-
Chercheur principal:
- Michael B Stierstorfer, MD
-
Philadelphia, Pennsylvania, États-Unis, 19104
- Recrutement
- University of Pennsylvania Dermatology
-
Contact:
- Anna Kersh, MD, PhD
- Numéro de téléphone: 215-699-1929
- E-mail: admin@ibsfoodstudy.com
-
Contact:
- Sally Iles, BA, MBA
- Numéro de téléphone: 617-922-1130
- E-mail: admin@ibsfoodstudy.com
-
-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
La description
Inclusion Criteria:
- Irritable bowel syndrome diagnosed by a primary care provider, gastroenterologist or allergist; or
- meeting the Rome IV IBS diagnostic criteria by history and having suboptimally or poorly controlled IBS symptoms.
Exclusion Criteria:
- Under age 18 years
- Pregnant
- Severe rash
- Receiving any cortisone-containing or any of the following immunosuppressive medications within two weeks prior to patch testing or plan to do so any time during the study: cyclosporine, mycophenylate mofetil, azathioprine, tacrolimus or others within these classes of medications)
- Incapable of completing all parts of the 18-week screening period and study, including following the dietary instructions and completing all text or email questionnaires
- Exposure of back to the sun in the 2 weeks prior to patch testing Unable or unwilling to discontinue the low FODMAP diet, if relevant, starting 1 week prior to the study and for the study duration
8) Refusal to shave back hair, if relevant 9) Receiving pharmacologic therapy for IBS that has been started or changed within 30 days of study enrollment 10) Non-English speaking 11) Unable to provide written informed consent 12) Have a history of gastrointestinal disease including celiac disease, cirrhosis, gastrointestinal malignancy, inflammatory bowel disease, or diverticulitis, active within the prior 2 years. 13) Have a history of gastrointestinal surgery (except appendectomy and cholecystectomy or gallbladder removal >6 months ago) 14) Have poorly controlled psychiatric disease such as severe depression (with or without suicidal ideation), severe anxiety, schizophrenia, dementia 15) Have excessive alcohol intake (more than 1 drink per day for females and 2 drinks per day for males) 16) Use illicit substances 17) Use high-dose opiates 18) Severe allergy to adhesive tape
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Traitement
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Quadruple
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
|
Comparateur actif: True avoidance diet
Food patch test-directed avoidance diet for 16 weeks where participant avoids avoid eating the food(s) to which they are allergic |
Food patch test-directed avoidance diet for 16 weeks where participant avoids avoid eating the food(s) to which they are allergic |
|
Comparateur factice: Sham avoidance diet
Avoidance diet for 16 weeks of randomly selected foods to which the patch testing did not show an allergy |
Avoidance diet for 16 weeks of randomly selected foods to which the patch testing did not show an allergy |
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Post-Avoidance Diet Relative IBS Symptom Global Assessment
Délai: Questionnaire to be completed promptly after completion of 16 week avoidance diet.
|
Participant global assessment of IBS symptoms compared to the three months prior to entering study, assessed by a post-avoidance diet questionnaire. The assessment is a 7 point Likert scale with 1=substantially improved; 2=moderately improved; 3=slightly improved; 4=no change; 5=slightly worse; 6=moderately worse; 7=substantially worse |
Questionnaire to be completed promptly after completion of 16 week avoidance diet.
|
Collaborateurs et enquêteurs
Parrainer
Les enquêteurs
- Chercheur principal: Michael B Stierstorfer, MD, North Wales Dermatology, PLLC
Publications et liens utiles
Publications générales
- Shin GH, Smith MS, Toro B, et al. Utility of food patch testing in the evaluation and management of irritable bowel syndrome. Skin. 2018;2:1-15.
- Stierstorfer MB, Toro B. Patch Test-Directed Dietary Avoidance in the Management of Irritable Bowel Syndrome. Cutis. 2021 Aug;108(2):91-95. doi: 10.12788/cutis.0321.
- Stierstorfer MB, Sha CT, Sasson M. Food patch testing for irritable bowel syndrome. J Am Acad Dermatol. 2013 Mar;68(3):377-84. doi: 10.1016/j.jaad.2012.09.010. Epub 2012 Oct 24.
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Achèvement primaire (Estimé)
Achèvement de l'étude (Estimé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
- SCI
- syndrome de l'intestin irritable
- FODMAP
- faible teneur en FODMAP
- régime pauvre en FODMAP
- Régime IBS
- Allergie alimentaire IBS
- Solution SCI
- Traitement du SCI
- Aliments pour le SCI
- Évaluation du SCI
- traitement du syndrome du côlon irritable
- prise en charge du syndrome du côlon irritable
- Cause du SCI
- pathogenèse du syndrome du côlon irritable
- évaluation du syndrome du côlon irritable
- Pathogénie du SCI
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- 1003A
Informations sur les médicaments et les dispositifs, documents d'étude
Étudie un produit pharmaceutique réglementé par la FDA américaine
Étudie un produit d'appareil réglementé par la FDA américaine
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