The objectives of this study are to determine in children allergic to peanut (i) the prevalence of sensitization to other legumes, (ii) the prevalence of allergy to each legume in patients who are sensitized to it (iii ) the severity of the allergy to legumes other than peanut

Allergy to legumes is more and more frequent, especially in children allergic to peanut, with some severe reactions but little is known about cross-reactivity and clinical meanings of legumes sensitization in children allergic to peanut.

All children with a confirmed peanut allergy and followed at the University Hospital of Nancy between January 1st 2017 and February 29th 2020 will be included in order to evaluate the prevalence of sensitization and allergy to other legumes in this population.

In children allergic to peanut and to at least one other legume, we will evaluate the severity of the allergy and the sIgE profiles for peanut.

Inclusion Criteria:

• Confirmed allergy to peanut

Exclusion Criteria:

• no available information regarding sensitization and tolerance to legumes

children allergic to peanut with a follow-up at the Pediatric Allergy Department of the University Hospital of Nancy from january 2017 to february 2020