Food, drug, insect sting allergy, and anaphylaxisHow much is too much? Threshold dose distributions for 5 food allergens
Section snippets
Participant populations and characteristics
The population of patients with food allergy who underwent DBPCFCs (see Table E1 in this article's Online Repository at www.jacionline.org) came from the EuroPrevall birth cohort (study A),23 and those having probable food allergies came from the EuroPrevall community surveys in adults and school-age children (study B) and an outpatient clinic population (study C).24 Food-specific IgE levels were determined by using ImmunoCAP (Thermo Fisher Scientific, Uppsala, Sweden) with a range of foods and
Challenged populations
Analysis of challenge data for 5 foods (hazelnut, peanut, celeriac, fish, and shrimp) has been undertaken, drawing on participants from the pan-European EuroPrevall studies (Fig 1 and see Supplement E1). Of 436 challenged patients, we included as our reactive reference population 244 subjects with a median age of 24.2 years. Because of the patterns, prevalence, and inherent age distribution of the cohort with food allergy, challenges for hazelnut, celeriac, and shrimp were undertaken largely in
Discussion
The data from the EuroPrevall pan-European cohorts for peanut produced an ED10 value for objective symptoms similar to those previously published by using the interval-censoring survival analysis approach in other populations with peanut allergy.20 A log-normal dose distribution produced an ED10 value of 2.8 mg of protein, which equates to 11.2 mg of peanut seed containing 25% protein (dry weight). It is of the same order as the ED10 value of 12.3 mg of peanut seed defined among 450
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Supported by the European Union through the EuroPrevall project (FOOD-CT-2005-514000) and the UK Food Standards Agency (FSA projects T07062 and T07046). The Lithuanian birth cohort was supported by unrestricted grants from Grida and MSD and the Dutch birth cohort by unrestricted grants from Nutricia Advanced Medical Nutrition Netherlands, AstraZeneca Netherlands, TEVA Netherlands, and GlaxoSmithKline Netherlands. M.D., A.R.M., L.J.S., and E.N.C.M. were partly funded by the UK Biological and Biotechnological Sciences Research Council through an Institute Strategic Programme Grant to the Institute of Food Research (BBS/E/F/00041800, BBS/E/F/00042204).
Disclosure of potential conflict of interest: The study was done within a European Union project (FOOD-CT-2005-514000). B. K. Ballmer-Weber has received consultancy fees and lecture fees from Thermo Fisher. M. Fernandez-Rivas has received research support and travel support from the European Commission (EuroPrevall project FOOD-CT-2005-514000); has received research support from Instituto de Salud Carlos III, Spanish Ministry of Science; and has received lecture fees from GlaxoSmithKline and ALK-Abelló. K. Beyer is a board member for Danone; has received consultancy fees from Danone, ALK-Abelló, Meda Pharma, Unilever, HAL, and Hipp; has received research support from the European Union (FOOD-CT-2005-514000), the German Research Foundation, Berliner Sparkassen Stiftung, Danone, Thermo Fisher, Hycor Diagnostic Systems, the Foundation for the Treatment of Peanut Allergy, Hipp, and Infectopharm; has received lecture fees from Danone, HAL, Unilever, Infectopharm, CSL Behring, UCB, MedaPharma, MedUpdate, Thermo Fisher, ALK-Abelló, and Hipp; and has received travel support from the EAACI (European Academy of Allergy and Clinical Immunology), AAAAI (American Academy of Allergy, Asthma & Immunology), DGAKI, GPA, Danone, HAL, Unilever, Infectopharm, CSL Behring, UCB, MedaPharma, MedUpdate, Thermo Fisher, ALK, and Hipp. M. Defernez has received research support from the UK Food Standards Agency (T07062). M. Sperrin has received research support from the UK Food Standards Agency (T07062). A. R. Mackie has received research support, travel support, and participation fees from the UK Food Standards Agency (T07062). J. O'B. Hourihane has received research support from the European Union (FOOD-CT-2005-514000) and has received lecture fees from Danone, Nutricia, and Stallergenes. M. Kowalski has received travel support. F. de Blay has received research support from Stallergenes and Chiesi; has received consultancy fees from Stallergenes, ALK-Abelló, Mundipharma, and Novartis; has received participation fees from Stallergenes and ALK-Abelló; and is a board member for and has received consultancy fees from Stallergenes, Mundipharma, ALK-Abelló, and Novartis. N. G. Papadopoulos has received consultancy fees from Abbvie, Novartis, Menarini, Meda, ALK-Abelló, and GlaxoSmithKline; has received research support from Nestlé, Merck, and GlaxoSmithKline; and has received lecture fees from Novartis, Uriach, GlaxoSmithKline, Allergopharma, Stallergenes, and MSD; and has received payment for development of educational presentations from Abbvie, Sanofi, Menarini, and Meda. M. Clausen has received lecture fees from and has received travel support from GlaxoSmithKline. A. C. Knulst has received research support from the European Commission (EuroPrevall project FOOD-CT-2005-514000). G. Roberts has received research support from the European Commission (EuroPrevall project FOOD-CT-2005-514000) and has received consultancy fees from Danone. T. Popov has received research support from the European Commission (EuroPrevall project FOOD-CT-2005-514000). A. B. Sprikkelman has received research support from Nutricia Advanced Medical Nutrition Netherlands, AstraZeneca Netherlands, TEVA Netherlands, and GlaxoSmithKline Netherlands; is a board member for GlaxoSmithKline Netherlands; has received research support from Danone Research Netherlands, Nutricia Advanced Medical Nutrition Netherlands, ALK-Abelló Netherlands, Thermo Fisher Netherlands, Yakult Netherlands, MARFO Netherlands, GlaxoSmithKline Netherlands, Chiesi Netherlands, Stallergenes Netherlands, Medapharma Netherlands, and Allergy Therapeutics Netherlands; and has received lecture fees from Nutrica Advanced Medical Nutrition Netherlands. S. Vieths has received consultancy fees from the Food Allergy Resource and Research Program (Lincoln, Nebraska), the Institute for Product Quality (Berlin, Germany), and Fresenius Academy (Dortmund, Germany); has provided expert testimony for the Medical University of Vienna, Austria; has received research support from Monsanto Company and Pioneer Hi-Bred International; has received lecture fees from the AAAAI, Deutsche Dermatologische Gesellschaft, the Spanish Society of Allergy and Clinical Immunology, Westdeutsche Arbeitsgemeinschaft für pädiatrische Pneumologie und Allergologie e.V. (Köln, Germany), Gesellschaft für pädiatrische Allergologie und Umweltmedizin, and Ärzteverband Deutscher Allergologen; has received royalties from Schattauer Allergologie and Elsevier Nahrungsmittelaller-gien und IntoleranzenHandbuch; and has received travel support from the German Research Foundation, the Federal Institute for Risk Assessment, the Austrian Society for Allergology and Immunology, the French Society of Allergology, the European Directorate for the Quality of Medicines and Health Care, the EAACI, the World Allergy Organization, Technical University of Munich, Deutscher Allergie- und Asthmabund, Association Monégasque pour le Perfectionnement des Connaissances des Médicins, the Federal Office of Consumer Protection and Food Safety, the German Chemical Society (GDCh), the Austrian Society for Dermatology and Venerology, and AKM Allergiekongress. R. van Ree has received research support and travel support from the European Union (FOOD-CT-2005-514000, CT201871), is a board member for EAACI, and is employed by Academic Medical Center. R. Crevel is employed by and has stock/stock options in Unilever and has received royalties from Elsevier. E. N. C. Mills has received research support from the European Union (FOOD-CT-2005-514000), the Biological and Biotechnological Sciences Research Council (BBS/E/F/00041800, BBS/E/F/00042204), the UK Food Standards Agency (T07062), the European Food Safety Authority, the UK Technology Strategy Board (grant no. 101130), DBV Technology, and Novartis; is a board member for Novartis, the UK Food Standards Agency, PepsiCo International, the UK Biological and Biotechnological Sciences Research Council, and Reacta Biotech Ltd; is employed by the University of Manchester and the Institute of Food Research; has stock/stock options in Standard Life and Reacta Biotech; has received travel support from ILSI, EAACI, the University of Bologna, Europa Bio, the British High Commission, the Iceland Allergy Society, Fresenius, EuroFood Tox 2013, and the IUNS Annual Meeting (Granada, Spain September 2013); and was paid as a lecturer and supervisor of masters students at Imperial College and as an external examiner at the University of Birmingham. The rest of the authors declare that they have no relevant conflicts of interest.