PMID- 37712396 OWN - NLM STAT- Publisher LR - 20230915 IS - 1764-1489 (Print) IS - 1764-1489 (Linking) DP - 2023 Sep 15 TI - Predicting the Outcome of the Buckwheat Oral Challenge Test: A First Evaluation Assuming a Single Serving of Boiled Buckwheat Noodles. LID - 10.23822/EurAnnACI.1764-1489.315 [doi] AB - Background. Global increase in buckwheat consumption has led to a surge in buckwheat allergy reports. However, studies scrutinizing the predictive accuracy of buckwheat-specific immunoglobulin E (IgE) antibody levels in correlation with symptom manifestation remain limited. A critical concern is the discrepancy between the total buckwheat amount featured in prior studies and the quantity consumed per occasion. We aimed to determine open Oral Food Challenge (OFC) positivity rates with buckwheat, using a single serving of boiled buckwheat noodles, and assess the predictability of positive responses using buckwheat-specific IgE levels. Methods. Patients aged 20 years or younger, suspected of buckwheat allergy, were subjected to an OFC involving consumption of 100 g (4800 mg of protein) of boiled buckwheat noodles for those under six years, and 200 g (9600 mg of protein) for those six years or older. The predictive accuracy of the OFC, corresponding with buckwheat-specific IgE antibody levels, was evaluated using Receiver Operating Characteristic (ROC) analysis. Results. Our study involved 80 patients who undertook a buckwheat OFC. Among these, 14 (17.5%) tested positive for a buckwheat allergy, with 3 (3.8%) developing anaphylaxis. The comparative analysis of buckwheat-specific IgE antibody levels did not offer a reliable predictive measure for OFC outcomes. However, a past history of symptom manifestation following buckwheat consumption was significantly correlated with a positive OFC. Conclusions. Forecasting OFC outcomes based on buckwheat-specific IgE antibody levels poses a challenge, even when taking into account the total quantity of buckwheat that can be consumed in a single occasion. FAU - Horimukai, K AU - Horimukai K AD - Department of Pediatrics, Jikei University Katsushika Medical Center, Tokyo, Japan. FAU - Kinoshita, M AU - Kinoshita M AD - Department of Pediatrics, Jikei University Katsushika Medical Center, Tokyo, Japan. FAU - Takahata, N AU - Takahata N AD - Department of Pediatrics, Jikei University Katsushika Medical Center, Tokyo, Japan. LA - eng PT - Journal Article DEP - 20230915 PL - Italy TA - Eur Ann Allergy Clin Immunol JT - European annals of allergy and clinical immunology JID - 101466614 SB - IM OTO - NOTNLM OT - Buckwheat hypersensitivity OT - child OT - oral challenge test EDAT- 2023/09/15 12:42 MHDA- 2023/09/15 12:42 CRDT- 2023/09/15 06:43 PHST- 2023/09/15 12:42 [medline] PHST- 2023/09/15 12:42 [pubmed] PHST- 2023/09/15 06:43 [entrez] AID - 10.23822/EurAnnACI.1764-1489.315 [doi] PST - aheadofprint SO - Eur Ann Allergy Clin Immunol. 2023 Sep 15. doi: 10.23822/EurAnnACI.1764-1489.315.