PMID- 26831846 OWN - NLM STAT- MEDLINE DCOM- 20161104 LR - 20161230 IS - 1539-6304 (Electronic) IS - 1088-5412 (Linking) VI - 37 IP - 1 DP - 2016 Jan-Feb TI - Birch allergy and oral allergy syndrome: The practical relevance of serum immunoglobulin E to Bet v 1. PG - 43-9 LID - 10.2500/aap.2016.37.3914 [doi] AB - BACKGROUND: Birch allergy (BA) may frequently be associated with fruit-vegetables oral allergy syndrome (OAS). Bet v 1 is the major birch allergen. Previously, it was reported that serum-specific immunoglobulin E (IgE) level could differentiate allergy from sensitization. Thus, this study aimed to investigate the practical role of Bet v 1 IgE. METHODS: A total of 245 subjects (128 women, 117 men; mean age, 41 years) with suspected allergic rhinitis and sensitization to Bet v 1 were evaluated. Serum IgE to Bet v 1 was assessed by using immuno-enzymatic. BA and OAS were diagnosed according to validated criteria. Symptom severity perception was measured by the visual analog scale. RESULTS: A total of 158 patients (64.5%) had BA. Patients with BA had higher serum Bet v 1 IgE levels than subjects who were sensitized (p < 0.0001). A cutoff value of 8.94 kUA/L predicted BA (area under the curve, 0.76; odds ratio, 6.18). Fifty-three patients with BA (33.5%) had OAS. Patients positive for OAS had higher Bet v 1 levels (p < 0.0001) and more-severe symptoms (p < 0.0001) than patients with BA and negative for OAS. A cutoff value of 17.4 kUA/L predicted OAS (area under the curve, 0.59; odds ratio, 3.19). CONCLUSIONS: The present study demonstrated that serum IgE levels to Bet v 1 could be a useful marker for differentiating between different birch pollen sensitization phenotypes. FAU - Ciprandi, Giorgio AU - Ciprandi G AD - Allergy Department, Istituto di Ricovero e Cura a Carattere Scientifico-Azienda Ospedaliera-Universitaria San Martino, Genoa, Italy. FAU - Comite, Paola AU - Comite P FAU - Ferrero, Francesca AU - Ferrero F FAU - Bignardi, Donatella AU - Bignardi D FAU - Minale, Paola AU - Minale P FAU - Voltolini, Susanna AU - Voltolini S FAU - Troise, Costantino AU - Troise C FAU - Mussap, Michele AU - Mussap M LA - eng PT - Journal Article PL - United States TA - Allergy Asthma Proc JT - Allergy and asthma proceedings JID - 9603640 RN - 0 (Allergens) RN - 0 (Antigens, Plant) RN - 126161-14-6 (Bet v 1 allergen, Betula) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Adult MH - Allergens/*immunology MH - Antigens, Plant/*immunology MH - Betula/*immunology MH - Cross Reactions/*immunology MH - Diagnosis, Differential MH - Female MH - Food Hypersensitivity/blood/*diagnosis/*immunology MH - Humans MH - Immunoglobulin E/blood/immunology MH - Male MH - Middle Aged MH - ROC Curve MH - Retrospective Studies MH - Rhinitis, Allergic, Seasonal/blood/*diagnosis/*immunology MH - Young Adult EDAT- 2016/02/03 06:00 MHDA- 2016/11/05 06:00 CRDT- 2016/02/03 06:00 PHST- 2016/02/03 06:00 [entrez] PHST- 2016/02/03 06:00 [pubmed] PHST- 2016/11/05 06:00 [medline] AID - 10.2500/aap.2016.37.3914 [doi] PST - ppublish SO - Allergy Asthma Proc. 2016 Jan-Feb;37(1):43-9. doi: 10.2500/aap.2016.37.3914.