Tolerance of Pistachio and Pecan in Patients Desensitized to Cashew and Walnut

Cross-reactivity of cashew and pistachio pecan walnut has been reported in the past. We hypothesized that oral immunotherapy (OIT) lead to desensitization, respectively. Chart review was done on patients who underwent or OIT using a previously published protocol at New England Food Allergy Treatment Center from 2014 2019. Following protocol, every patient offered challenge after reaching maintenance doses walnut. The number passed recorded. One hundred fifty-eight charts were reviewed. Patient ages ranged 3 23 years, 67% males. Ninety-two went through with dose cashews/day. Mean IgE levels 13.2 ku/l 14.0 ku/l, Seventy-seven challenged 6 pistachios, 77 (100%) challenge. Sixty-six desensitized 4.2 grams. 19.5 9.9 Thirty-seven 6.5 grams pecans, 37 Cashew confer