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- Klinische proef NCT06288672
IBS-huidpleistertest Onderzoek naar voedselallergie
Een gerandomiseerde, dubbelblinde, placebo-gecontroleerde, multicentrische studie naar patchtest-geleide type 4 voedselallergeendieetvermijding voor het prikkelbaredarmsyndroom
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.
Studie Overzicht
Toestand
Conditie
Interventie / Behandeling
Gedetailleerde beschrijving
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.
Studietype
Inschrijving (Geschat)
Fase
- Niet toepasbaar
Contacten en locaties
Studiecontact
- Naam: Michael B Stierstorfer, MD
- Telefoonnummer: 215-699-1929
- E-mail: mbstierstorfer@gmail.com
Studie Contact Back-up
- Naam: Sally Iles, BSN, MBA
- Telefoonnummer: 617-922-1130
- E-mail: sallyiles3@gmail.com
Studie Locaties
-
-
Pennsylvania
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North Wales, Pennsylvania, Verenigde Staten, 19454
- Werving
- North Wales Dermatology, PLLC
-
Contact:
- Michael B Stierstorfer, MD
- Telefoonnummer: 215-699-1929
- E-mail: mbstierstorfer@gmail.com
-
Contact:
- Sally Iles, BSN, MBA
- Telefoonnummer: 617-922-1130
- E-mail: SallyIles3@gmail.com
-
Hoofdonderzoeker:
- Michael B Stierstorfer, MD
-
Philadelphia, Pennsylvania, Verenigde Staten, 19104
- Werving
- University of Pennsylvania Dermatology
-
Contact:
- Anna Kersh, MD, PhD
- Telefoonnummer: 215-699-1929
- E-mail: admin@ibsfoodstudy.com
-
Contact:
- Sally Iles, BA, MBA
- Telefoonnummer: 617-922-1130
- E-mail: admin@ibsfoodstudy.com
-
-
Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
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
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Behandeling
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Verviervoudigen
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
|
Actieve vergelijker: 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 |
|
Sham-vergelijker: 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 |
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Post-Avoidance Diet Relative IBS Symptom Global Assessment
Tijdsspanne: 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.
|
Medewerkers en onderzoekers
Sponsor
Onderzoekers
- Hoofdonderzoeker: Michael B Stierstorfer, MD, North Wales Dermatology, PLLC
Publicaties en nuttige links
Algemene publicaties
- 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.
Studie record data
Bestudeer belangrijke data
Studie start (Werkelijk)
Primaire voltooiing (Geschat)
Studie voltooiing (Geschat)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
- PDS
- prikkelbare darm syndroom
- FODMAP
- laag FODMAP
- laag FODMAP-dieet
- PDS-dieet
- PDS voedselallergie
- IBS-oplossing
- IBS-behandeling
- PDS-voedingsmiddelen
- IBS-evaluatie
- behandeling van het prikkelbaredarmsyndroom
- behandeling van het prikkelbaredarmsyndroom
- PDS oorzaak
- pathogenese van het prikkelbaredarmsyndroom
- evaluatie van het prikkelbaredarmsyndroom
- PDS-pathogenese
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- 1003A
Informatie over medicijnen en apparaten, studiedocumenten
Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel
Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct
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