Nut Allergy in Children | Tree Nuts Allergies: Does a Single Nut Allergy Necessitate the Dietary Eviction of Other Tree Nuts?
Nut Allergy in Children research study
What is the primary objective of this study?
The aim of this study is to identify, based on standardized food provocation tests, which nuts allergic patients need a selective, or a complete dietary eviction of all kind of nuts (nuts being defined as peanut, all tree nuts, pine nut and sesame). The investigators postulate that predictive factors of multiple nut allergy are high specific immunoglobulin E level, positive skin tests and/or clinical markers, such as atopic dermatitis, presence of other food allergies or a history of a severe previous reaction
Who is eligible to participate?
Inclusion Criteria: - Children 1 - 16 years of age at the time of inclusion (a minimum of 75 children < 6 years old required, over the 3 centers) - Children with convincing history of IgE-mediated systemic allergic reaction (not only oral symptoms) after consumption of one or more \"nuts\" (peanut, hazelnut, walnut, almond, cashew, pecan, Brazil, macadamia, pine nut, sesame) within last 12 months and SPT > 3 mm and/or positive specific IgE (>0.1 kU/l). - Children without a convincing history of IgE-mediated systemic allergic reaction (for example only oral symptoms) after consumption of one or more \"nuts\" (peanut, hazelnut, walnut, almond, cashew, pecan, brazil, macadamia, pistachio, pine nut, sesame) but with clear evidence of sensitization (SPT > 3 mm and/or positive specific IgE (> 0.1 kU/l) and a positive standardized food challenge to the nut. - Informed consent approved and signed by the patient's legal representative and, if applicable, by the child itself. Exclusion Criteria: - Uncontrolled asthma (according to the European Guidelines)(13) - Chronic urticaria - Children with a chronic systemic disease - Children who are dependent on daily antihistamine use
Which medical condition, disease, disorder, syndrome, illness, or injury is researched?
Nut Allergy in Children
Interventions can include giving participants drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available or noninvasive approaches such as surveys, education, and interviews.
Other:Oral food challenges to multiple nuts
Research studies and clinical trials typically have two or more research arms. An arm is a group of people who receive the same treatment in the study.
Interventional single armSingle group of children undergoing the same investigations and follow up
Start Date: October 2012
Completed Date: September 2018
Primary Outcome: Evaluation of cross reactivity in nut allergic children
Secondary Outcome: Identify predictive factors of multiple nut allergy
Study sponsors, principal investigator, and references
Principal Investigator: Philippe A Eigenmann, MD
Lead Sponsor: University Hospital, Geneva
Collaborator: Allergistiftung Ulrich Müller