Study to Assess Tolerance of Traces in Peanut/Tree Nut Allergic Children.

Status Terminated

Clinical Trial Summary

This protocol will help better define whether patients with peanut and/or tree nut food allergy can tolerate traces in products with precautionary allergen labelling.

Clinical Trial Description

Visit 1 (V1): During this visit at the Pediatric Research Platform at the Children's Hospital, subjects will undergo an open food challenge to 3 processed foods labeled with "may contain traces" by following safety and accuracy guidelines for food challenges (7). The following foods (similar for all patients) will be given in one dose in the size of a regular serving: - cookies, max 30 g; - chocolate, max 30 g; - breakfast cereals, max 50 g. Each meal will be administered with a 1 hour observation period in between and at the end. If the patient does not react to any of the foods or has only oral itching (mild symptoms), he/she will be instructed to stop the ban on "may contain" foods and eat them regularly. If the patient has more than mild symptoms, the study will be stopped and the patient will be banned from eating foods with traces. The study subjects with a negative challenge and instructed to eat foods with the "may contain" label will be provided emergency medications and instruction on when and how to use them according to current guidelines (8). An age appropriate quality of life questionnaire will be filled out by the parents/patient during the visit. For the following 3 months after "may contain food" challenges, the patients will be invited to eat on a regular basis any foods labeled as "may contain" tree nuts and/or peanuts and record the consumption on a diary. Such foods will only be eaten in presence of a family member instructed for the measures to be taken in case of a reaction. They will record any history of reaction and contact the study team. The brand name of the food, and if available the batch will be recorded. The participants will store the study food and its packaging safely in a box and bring it along at V2 for allergen content analysis. If a reaction occurs, the food will be analyzed for allergen content by immunoaffinity capillary elecrophoresis-matrix assisted laser desorption/ionization mass spectrometry, as well as a simplified version of this technique, the immunomagnetic separation -matrix-assisted laser desorption/ionization mass spectrometry. Visit 2 (V2): During this visit, the parents/patients will report on the brand, the frequency and the amount of "may contain" foods eaten since V1. The quality of life questionnaire will be filled out again by the parents/patient. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT03680066
Study type	Interventional
Source	University Hospital, Geneva
Contact
Status	Terminated
Phase	N/A
Start date	April 1, 2018
Completion date	November 28, 2023

View Details

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.