Study population and design
We conducted a retrospective analysis at the University Children’s Hospital Basel, Switzerland, of OIT for CN or peanut initiated between October 2018 and April 2022. The evaluation period extended until August 31, 2023, with a total observation period ranging from 17 to 58 months.
Allergy diagnoses were established based on either a clear history of an immediate-type allergic reaction or an observed reaction during an oral food challenge (OFC), together with positive results from a skin prick test (SPT) and/or specific immunoglobulin E levels (sIgE) exceeding 0.35 kU/l for the respective allergen.