Peanut Allergy Clinical Trial
Verified date | November 2016 |
Source | Lille Catholic University |
Contact | n/a |
Is FDA regulated | No |
Health authority | France: Ministry of Health |
Study type | Observational |
An oral tolerance induction (OTI) protocol is conducted at the allergy Unit of Saint Vincent
Hospital of Lille (France) in standard care since 2006. This protocol consists in exposing
patients to regularly increasing doses of allergen. This protocol induces an increase of the
threshold reactive dose (the minimum dose of allergen that triggered a reactive reaction)
and a decrease of the quantity of specific immunoglobulin E (sIgE) against peanut proteins.
The protocol is ended when the patient reaches a threshold reactive dose of 2942mg of peanut
proteins, corresponding to 14 peanuts of middle size, which is the maximum dose of peanut
that can be found in standard product in France.
The investigators wish to study the evolution of the threshold reactive dose and of the sIgE
of patients that have followed the OTI protocol. All the needed data are available in the
medical records so the study will be conducted on retrospective data.
Status | Completed |
Enrollment | 493 |
Est. completion date | December 2015 |
Est. primary completion date | December 2015 |
Accepts healthy volunteers | No |
Gender | Both |
Age group | N/A and older |
Eligibility |
Inclusion Criteria: - Patients with clinical symptoms when consuming peanuts, such as urticaria, asthma, angioedema, atopic dermatitis, dermo-respiratory syndrome or anaphylactic shock. - Positive sIgE against r Ara h 2 dosage, i.e. r Ara h 2 >0.1 - Patients that had followed a peanut oral tolerance induction Exclusion Criteria: - No clinical symptoms or biological confirmation of a peanut allergy |
Observational Model: Case-Only, Time Perspective: Retrospective
Country | Name | City | State |
---|---|---|---|
n/a |
Lead Sponsor | Collaborator |
---|---|
Lille Catholic University |
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Evolution of the threshold reactive dose in milligrams | During the OTI protocol, an oral food challenge is performed every 6 months. The dose that induce the first allergic reaction is reported. The protocol is followed until the patients get a threshold reactive dose of 2942mg of peanut protein, or until the patient decide to end it. | At inclusion, then every 6 months until a threshold reactive dose of 2942mg of peanut protein is reached (up to 7 years) | Yes |
Secondary | Evolution of IgE dosages against Arah1, 2 and 3 | Dosage of the specific IgE against peanut proteins, rAra h 1, rAra h 2 and rArah 3, that are performed every 6 months during the standard follow-up of the patients. The measures are done with ImmunoCAP laboratory system, Phadia, Uppsala, Sweden. | At inclusion, then every 6 months until a threshold reactive dose of 2942mg of peanut protein is reached (up to 7 years) | No |
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