Usefulness of Gly m 4‐specific IgE test in the diagnosis of Rosaceae fruit‐oral allergy syndrome caused by Betulaceae pollen sensitization

Pollen‐food allergy syndrome (PFAS) is caused by the cross‐reaction of the specific IgE to pollen allergens with similar allergens contained in fruits, vegetable, and nuts. The representative allergen responsible for this cross‐reaction is pathogenesis‐related protein (PR)‐10. Specific IgE test using Gly m 4, soybean PR‐10, is widely used to diagnose soy allergy. We aimed to investigate whether the Gly m 4‐specific IgE test is useful for predicting oral allergy symptoms (OAS) to Rosaceae fruits in PFAS caused by Betulaceae pollen sensitization.