Food Allergy in Children Clinical Trial
Official title:
Efficacy and Safety of Cashew Nut Oral Immunotherapy in Children
Allergy to nuts (cashew, pistachio, walnut, exotic nuts) is a frequent allergy in children, with a prevalence of up to 4.9% of the population and a low resolution rate (9%). Among the nut allergies, cashew nut allergy is one of the most frequent in Northern Europe: in France 41% of children allergic to nuts are sensitized to cashew nuts. Moreover, cashew nut allergy is associated with severe reactions that can be lethal in both adults and children. These reactions may even be more severe than those observed with peanuts, with more frequent respiratory and cardiovascular impairment. We note reactions for even limited contacts (cutaneous or mucous) and low reactogenic thresholds. However, the only recommendation for management at present is avoidance. The stakes of oral immunotherapy protocols cashew would be similar to those for peanut immunotherapy: to limit reactions in case of accidental intake, increase the reactogenic threshold and thus improve the quality of life of allergic patients. To date, only one study has focused on the efficacy and tolerance of cashew immunotherapy : the prospective NUT CRACKER study conducted on 50 children aged 4 years or older with cashew nut allergy between 2016 and 2019, reports a good efficacy of immunotherapy on increasing threshold for cashew nut but also for pistachio and walnut, when there was a cross-over allergy. While the tolerance was similar to other immunotherapy protocols for the other foods. The objectives of part 2 of the CAJESITO study are (i) to evaluate the tolerance of oral cashew nut immunotherapy, by describing the frequency and severity of allergic reactions during oral cashew immunotherapy and (ii) to identify risk factors for severe risk factors for severe allergic reactions during oral cashew immunotherapy.
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