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  • Title: Serum basal tryptase may be a good marker for predicting the risk of anaphylaxis in children with food allergy.
    Author: Sahiner UM, Yavuz ST, Buyuktiryaki B, Cavkaytar O, Yilmaz EA, Tuncer A, Sackesen C.
    Journal: Allergy; 2014 Feb; 69(2):265-8. PubMed ID: 24251444.
    Abstract:
    A relationship between serum basal tryptase (sBT) levels, anaphylactic reactions, and clonal mast cell diseases was shown recently in adults with venom allergy, but the relationship between sBT levels and IgE-mediated food allergy and anaphylaxis is not known. In this study, children with food allergy (FA; n = 167) were analyzed in two groups according to the presence (FA+/A+; n = 79) or absence of anaphylaxis (FA+/A-; n = 88) and were compared with a control group (n = 113). Median sBT values in FA+/A+, FA+/A-, and control groups were 4.0 ng/ml (2.8-5.8), 3.6 (2.3-4.5), and 3.3 (2.4-4.4), respectively (P = 0.022). sBT measurements higher than the cutoff values of 5.7 and 14.5 were associated with 50% and 90% predicted probabilities, respectively, of moderate to severe anaphylaxis. Children with tree nuts/peanut allergies had significantly higher levels of sBT than children with milk and egg allergy (P = 0.022). Results suggest that sBT levels may predict moderate to severe anaphylaxis in children with food allergy, which may follow a particular pattern according to the food allergy phenotype.
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