IBS-Hautpflastertest-Nahrungsmittelallergiestudie
Eine randomisierte, doppelblinde, placebokontrollierte, multizentrische Studie zur diätetischen Vermeidung von Typ-4-Nahrungsmittelallergenen durch Patch-Tests bei Reizdarmsyndrom
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.
Studienübersicht
Status
Status
Bedingungen
Bedingungen
Intervention / Behandlung
Intervention / Behandlung
Detaillierte Beschreibung
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.
Studientyp
Studientyp
Einschreibung (Geschätzt)
Einschreibung
Phase
Phase
- Unzutreffend
Kontakte und Standorte
Studienkontakt
Studienkontakt
- Name: Michael B Stierstorfer, MD
- Telefonnummer: 215-699-1929
- E-Mail: mbstierstorfer@gmail.com
Studieren Sie die Kontaktsicherung
- Name: Sally Iles, BSN, MBA
- Telefonnummer: 617-922-1130
- E-Mail: sallyiles3@gmail.com
Studienorte
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Pennsylvania
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North Wales, Pennsylvania, Vereinigte Staaten, 19454
- Rekrutierung
- North Wales Dermatology, PLLC
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Kontakt:
- Michael B Stierstorfer, MD
- Telefonnummer: 215-699-1929
- E-Mail: mbstierstorfer@gmail.com
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Kontakt:
- Sally Iles, BSN, MBA
- Telefonnummer: 617-922-1130
- E-Mail: SallyIles3@gmail.com
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Hauptermittler:
- Michael B Stierstorfer, MD
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Philadelphia, Pennsylvania, Vereinigte Staaten, 19104
- Rekrutierung
- University of Pennsylvania Dermatology
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Kontakt:
- Anna Kersh, MD, PhD
- Telefonnummer: 215-699-1929
- E-Mail: admin@ibsfoodstudy.com
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Kontakt:
- Sally Iles, BA, MBA
- Telefonnummer: 617-922-1130
- E-Mail: admin@ibsfoodstudy.com
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Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
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
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Behandlung
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Vervierfachen
Anzahl der Arme
Waffen und Interventionen
Teilnehmergruppe / ArmTeilnehmergruppe / Arm |
Intervention / BehandlungIntervention / Behandlung |
|---|---|
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Aktiver Komparator: 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 |
|
Schein-Komparator: 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 |
Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Post-Avoidance Diet Relative IBS Symptom Global Assessment
Zeitfenster: Questionnaire to be completed promptly after completion of 16 week avoidance diet.
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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.
|
Mitarbeiter und Ermittler
Sponsor
Sponsor
Ermittler
Ermittler
- Hauptermittler: Michael B Stierstorfer, MD, North Wales Dermatology, PLLC
Publikationen und hilfreiche Links
Allgemeine Veröffentlichungen
- 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.
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Studienbeginn
Primärer Abschluss (Geschätzt)
Primärer Abschluss
Studienabschluss (Geschätzt)
Studienabschluss
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Zuerst gepostet
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes Update gepostet
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
- RDS
- Reizdarmsyndrom
- FODMAP
- niedriger FODMAP-Wert
- Low-FODMAP-Diät
- IBS-Diät
- RDS-Nahrungsmittelallergie
- IBS-Lösung
- IBS-Behandlung
- IBS-Lebensmittel
- IBS-Bewertung
- Behandlung des Reizdarmsyndroms
- Behandlung des Reizdarmsyndroms
- IBS-Ursache
- Pathogenese des Reizdarmsyndroms
- Beurteilung des Reizdarmsyndroms
- Pathogenese des Reizdarmsyndroms
Zusätzliche relevante MeSH-Bedingungen
Andere Studien-ID-Nummern
Andere Studien-ID-Nummern
- 1003A
Arzneimittel- und Geräteinformationen, Studienunterlagen
Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
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