Immunoglobulin E-mediated allergies in lung-transplanted adults

Background. Immunoglobulin E (IgE)-mediated allergy has repeatedly been reported after solid organ transplantation, apparently affecting approximately 10% of pediatric organ transplant recipients. Interestingly, type I allergy has not been described in transplanted adults, suggesting a particular propensity in childhood. Methods. The present cross-sectional study assessed the prevalence of type 1 allergy in 42 adult lung transplant recipients aged 25 to 50 years. Instruments included standardized interviews, skin prick tests, and serum IgE measurements. Results. Ten of 42 patients (23.8%) displayed elevated specific IgE levels or positive skin prick test results against one or more allergens. Five individuals (11.9%) additionally reported corresponding clinical symptoms of type I allergy. No statistically significant association of sensitization or allergy prevalence with patient age, kind of immunosuppressive therapy, and time since transplantation was found. Conclusions. The phenomenon of transplantation-associated allergy is not age-restricted and thus should be assessed more thoroughly in all age groups.