Table of contentsWORKSHOP 4: Challenging clinical scenarios (CS01–CS06)CS01 Bullous lesions in two children: solitary mastocytomaS. Tolga Yavuz, Ozan Koc, Ali Gungor, Faysal GokCS02 Multi-System Allergy (MSA) of cystic fibrosis: our institutional experienceJessica Hawley, Christopher O’Brien, Matthew Thomas, Malcolm Brodlie, Louise MichaelisCS03 Cold urticaria in pediatric age: an invisible cause for severe reactionsInês Mota, Ângela Gaspar, Susana Piedade, Graça Sampaio, José Geraldo Dias, Miguel Paiva, Mário Morais-AlmeidaCS04 Angioedema with C1 inhibitor deficiency in a girl: a challenge diagnosisCristina Madureira, Tânia Lopes, Susana Lopes, Filipa Almeida, Alexandra Sequeira, Fernanda Carvalho, José OliveiraCS05 A child with unusual multiple organ allergy disease: what is the primer?Fabienne Gay-CrosierCS06 A case of uncontrolled asthma in a 6-year-old patientIoana-Valentina Nenciu, Andreia Florina Nita, Alexandru Ulmeanu, Dumitru Oraseanu, Carmen ZapucioiuORAL ABSTRACT SESSION 1: Food allergy (OP01–OP06)OP01 Food protein-induced enterocolitis syndrome: oral food challenge outcomes for tolerance evaluation in a Pediatric HospitalAdrianna Machinena, Olga Domínguez Sánchez, Montserrat Alvaro Lozano, Rosa Jimenez Feijoo, Jaime Lozano Blasco, Mònica Piquer Gibert, Mª Teresa Giner Muñoz, Marcia Dias da Costa, Ana Maria Plaza MartínOP02 Characteristics of infants with food protein-induced enterocolitis syndrome and allergic proctocolitisEbru Arik Yilmaz, Özlem Cavkaytar, Betul Buyuktiryaki, Ozge Soyer, Cansin SackesenOP03 The clinical and immunological outcomes after consumption of baked egg by 1–5 year old egg allergic children: results of a randomised controlled trialMerrynNetting, Adaweyah El-Merhibi, Michael Gold, PatrickQuinn, IrmeliPenttila, Maria MakridesOP04 Oral immunotherapy for treatment of egg allergy using low allergenic, hydrolysed eggStavroula Giavi, Antonella Muraro, Roger Lauener, Annick Mercenier, Eugen Bersuch, Isabella M. Montagner, Maria Passioti, Nicolò Celegato, Selina Summermatter, Sophie Nutten, Tristan Bourdeau, Yvonne M. Vissers, Nikolaos G. PapadopoulosOP05 Chemical modification of a peanut extract results in an increased safety profile while maintaining efficacyHanneke van der Kleij, Hans Warmenhoven, Ronald van Ree, Raymond Pieters, Dirk Jan Opstelten, Hans van Schijndel, Joost SmitOP06 Administration of the yellow fever vaccine in egg allergic childrenRoisin Fitzsimons, Victoria Timms, George Du ToitORAL ABSTRACT SESSION 2: Asthma (OP07–OP12)OP07 Previous exacerbation is the most important risk factor for future exacerbations in school-age children with asthmaS. Tolga Yavuz, Guven Kaya, Mustafa Gulec, Mehmet Saldir, Osman Sener, Faysal GokOP08 Comparative study of degree of severity and laboratory changes between asthmatic children using different acupuncture modalitiesNagwa Hassan, Hala Shaaban, Hazem El-Hariri, Ahmed Kamel Inas E. MahfouzOP09 The concentration of exhaled carbon monoxide in asthmatic children with different controlled stadiumPapp Gabor, Biro Gabor, Kovacs CsabaOP10 Effect of vitamin D3 supplementation during pregnancy on risk of persistent wheeze in the offspring: a randomised clinical trialBo Chawes, Klaus Bønnelykke, Jakob Stokholm, Lene Heickendorff, Susanne Brix, Morten Rasmussen, Hans BisgaardOP11 Lung function development in childhoodHenrik Wegener Hallas, Bo Chawes, Lambang Arianto, Hans BisgaardOP12 Is the effect of maternal and paternal asthma different in female and male children before puberty?Maike Pincus, Thomas Keil, Andreas Reich, Ulrich Wahn, Susanne Lau, Linus GrabenhenrichORAL ABSTRACT SESSION 3: Epidemiology—genetics (OP13–OP18)OP13 Lifestyle is associated with incidence and category of allergen sensitisation: the ALADDIN birth cohortSara Fagerstedt, Helena Marell Hesla, Emelie Johansson, Helen Rosenlund, Axel Mie, Annika Scheynius, Johan AlmOP15 Maternal filaggrin mutations increase the risk of atopic dermatitis in children: an effect independent of mutation inheritanceJorge Esparza-Gordillo, Anja Matanovic, Ingo Marenholz, Anja Bauerfeind, Klaus Rohde, Katja Nemat, Min-Ae Lee-Kirsch, Magnus Nordenskjöld, Marten C. G. Winge, Thomas Keil, Renate Krüger, Susanne Lau, Kirsten Beyer, Birgit Kalb, Bodo Niggemann, Norbert Hübner, Heather J. Cordell, Maria Bradley, Young-Ae LeeOP16 Allergic multimorbidity of asthma, rhinitis and eczema in the first 2 decades of the German MAS birth cohortThomas Keil, Hannah Gough, Linus Grabenhenrich, Dirk Schramm, Andreas Reich, John Beschorner, Antje Schuster, Carl-Peter Bauer, Johannes Forster, Fred Zepp, Young-Ae Lee, Renate Bergmann, Karl Bergmann, Ulrich Wahn, Susanne LauOP17 Childhood anaphylaxis: a growing concernFilipe Benito Garcia, Inês Mota, Susana Piedade, Ângela Gaspar, Natacha Santos, Helena Pité, Mário Morais-AlmeidaOP18 Indoor exposure to molds and dampness in infancy and its association to persistent atopic dermatitis in school age. Results from the Greek ISAAC II studyAthina Papadopoulou, Despina Mermiri, Elpida Xatziagorou, Ioannis Tsanakas, Stavroula Lampidi, Kostas PriftisORAL ABSTRACT SESSION 4: Pediatric rhinitis—immunotherapy (OP19–OP24)OP19 Associations between residential greenness and childhood allergic rhinitis and aeroallergen sensitisation in seven birth cohortsElaine Fuertes, Iana Markevych, Gayan Bowatte, Olena Gruzieva, Ulrike Gehring, Allan Becker, Dietrich Berdel, Michael Brauer, Chris Carlsten, Barbara Hoffmann, Anita Kozyrskyj, Caroline Lodge, Göran Pershagen, Alet Wijga, Heinrich JoachimOP20 Full symptom control in pediatric patients with allergic rhinitis and asthma: results of a 2-year sublingual allergen immunotherapy studyZorica Zivkovic, Ivana Djuric-Filipovic, Jasmina Jocić-Stevanovic, Snežana ZivanovicOP21 Nasal epithelium of different ages of atopic subjects present increased levels of oxidative stress and increased cell cytotoxicity upon rhinovirus infectionStyliani Taka, Dimitra Kokkinou, Aliki Papakonstantinou, Panagiota Stefanopoulou, Anastasia Georgountzou, Paraskevi Maggina, Sofia Stamataki, Vassiliki Papaevanggelou, Evangelos Andreakos, Nikolaos G. PapadopoulosOP22 Cluster subcutaneous immunotherapy schedule: tolerability profile in childrenMonica Piquer Gibert, Montserrat Alvaro Lozano, Jaime Lozano Blasco, Olga Domínguez Sánchez, Rosa Jiménez Feijoo, Marcia Dias da Costa, Mª Teresa Giner Muñoz, Adriana Machinena Spera, Ana Maria Plaza MartínOP23 Rhinitis as a risk factor for asthma severity in 11-year old children: population-based cohort studyMatea Deliu, Danielle Belgrave, Angela Simpson, Adnan CustovicOP24 The Global Lung Function Initiative equations in airway obstruction evaluation of asthmatic childrenJoão Gaspar Marques, Pedro Carreiro-Martins, Joana Belo, Sara Serranho, Isabel Peralta, Nuno Neuparth, Paula Leiria-PintoPOSTER DISCUSSION SESSION 1: Food allergy (PD01–PD05)PD01 Allergen-specific humoral and cellular responses in children who fail egg oral immunotherapy due to allergic reactionsMarta Vazquez-Ortiz, Mariona Pascal, Ana Maria Plaza, Manel JuanPD02 FoxP3 epigenetic features in children with cow milk allergyLorella Paparo, Rita Nocerino, Rosita Aitoro, Ilaria Langella, Antonio Amoroso, Alessia Amoroso, Carmen Di Scala, Roberto Berni CananiPD04 Combined milk and egg allergy in early childhood: let them eat cake?Santanu Maity, Giuseppina Rotiroti, Minal GandhiPD05 Introduction of complementary foods in relation to allergy and gut microbiota in farm and non-farm childrenKarin Jonsson, Annika Ljung, Bill Hesselmar, Ingegerd Adlerbert, Hilde Brekke, Susanne Johansen, Agnes Wold, Ann-Sofie SandbergPOSTER DISCUSSION SESSION 2: Asthma and wheeze (PD06–PD16)PD06 The association between asthma and exhaled nitric oxide is influenced by genetics and sensitisationBjörn Nordlund, Cecilia Lundholm, Villhelmina Ullemar, Marianne van Hage, Anne Örtqvist, Catarina AlmqvistPD09 Prevalence patterns of infant wheeze across EuropeAnna Selby, Kate Grimshaw, Thomas Keil, Linus Grabenhenrich, Michael Clausen, Ruta Dubakiene, Alessandro Fiocchi, Marek Kowalski, Nikos Papadopoulos, Marta Reche, Sigurveig Sigurdardottir, Aline Sprikkleman, Paraskevi Xepapadaki, Clare Mills, Kirsten Beyer, Graham RobertsPD10 Epidemiologic changes in recurrent wheezing infantsHerberto Jose Chong Neto, Gustavo Falbo Wandalsen, Ana Carolina Dela Bianca, Carolina Aranda, Nelson Augusto Rosário, Dirceu Solé, Javier Mallol, Luis García MarcosPD13 A single nucleotide polymorphism in the GLCCI1 gene is associated with response to asthma treatment in childrenIvanaBanic, Matija Rijavec, Davor Plavec, Peter Korosec, Mirjana TurkaljPD14 Pollen induced asthma: Could small molecules in pollen exacerbate the protein-mediated allergic response?Alen Bozicevic, Maria De Mieri, Matthias HamburgerPD15 A qualitative study to understand how we can empower teenagers to better self-manage their asthmaSimone Holley, Ruth Morris, Frances Mitchell, Rebecca Knibb, Susan Latter, Christina Liossi, Graham RobertsPD16 Polymorphism of endothelial nitric oxide synthase (eNOS) gene among Egyptian children with bronchial asthmaMostafa M. M. HassanPOSTER DISCUSSION SESSION 3: Mechanisms—Epidemiology (PD17–PD21)PD17 Pregnancy outcomes in relation to development of allergy in a Swedish birth cohortMalin Barman, Anna Sandin, Agnes Wold, Ann-Sofie SandbergPD18 Evolution of the IgE response to house dust mite molecules in childhoodDaniela Posa, Serena Perna, Carl-Peter Bauer, Ute Hoffmann, Johannes Forster, Fred Zepp, Antje Schuster, Ulrich Wahn, Thomas Keil, Susanne Lau, Kuan-Wei Chen, Yvonne Resch, Susanne Vrtala, Rudolf Valenta, Paolo Maria MatricardiPD19 Antibody recognition of nsLTP-molecules as antigens but not as allergens in the German-MAS birth cohortOlympia Tsilochristou, Alexander Rohrbach, Antonio Cappella, Stephanie Hofmaier, Laura Hatzler, Carl-Peter Bauer, Ute Hoffmann, Johannes Forster, Fred Zepp, Antje Schuster, RaffaeleD’Amelio, Ulrich Wahn, Thomas Keil, Susanne Lau, Paolo Maria MatricardiPD20 Early life coloniza

Background: Absent T‐cell immunity resulting in life‐threatening infections provides a clear rationale for hematopoetic stem cell transplantation (HSCT) in patients with severe combined immunodeficiency (SCID). Combined immunodeficiencies (CIDs) and “atypical” SCID show reduced, not absent T‐cell immunity. If associated with infections or autoimmunity, they represent profound combined immunodeficiency (P‐CID), for which outcome data are insufficient for unambiguous early transplant decisions. Objectives: We sought to compare natural histories of severity‐matched patients with/without subsequent transplantation and to determine whether immunologic and/or clinical parameters may be predictive for outcome. Methods: In this prospective and retrospective observational study, we recruited nontransplanted patients with P‐CID aged 1 to 16 years to compare natural histories of severity‐matched patients with/without subsequent transplantation and to determine whether immunologic and/or clinical parameters may be predictive for outcome. Results: A total of 51 patients were recruited (median age, 9.6 years). Thirteen of 51 had a genetic diagnosis of “atypical” SCID and 14 of 51 of CID. About half of the patients had less than 10% naive T cells, reduced/absent T‐cell proliferation, and at least 1 significant clinical event/year, demonstrating their profound immunodeficiency. Nineteen patients (37%) underwent transplantation within 1 year of enrolment, and 5 of 51 patients died. Analysis of the HSCT decisions revealed the anticipated heterogeneity, favoring an ongoing prospective matched‐pair analysis of patients with similar disease severity with or without transplantation. Importantly, so far neither the genetic diagnosis nor basic measurements of T‐cell immunity were good predictors of disease evolution. Conclusions: The P‐CID study for the first time characterizes a group of patients with nontypical SCID T‐cell deficiencies from a therapeutic perspective. Because genetic and basic T‐cell parameters provide limited guidance, prospective data from this study will be a helpful resource for guiding the difficult HSCT decisions in patients with P‐CID.

BackgroundThe Mediterranean fever (MEFV) gene codes for protein pyrin, one of the regulators of inflammasome activity in innate immune cells. Mutations in this gene are considered the primary cause of Familial Mediterranean fever, but are also found in other monogenic and multifactorial autoinflammatory diseases. The aim of the study was to determine if healthy carriers of MEFV gene mutations and R202Q polymorphism have clinical manifestations of inflammation and impaired oxidative stress parameters.MethodsOne hundred DNA samples from healthy volunteers (13.3 ± 8.87 years of age (mean ± SD); range 2–35) were sequenced by ABI PRISM 310 automated sequencer (PE Applied Biosystems, Norwalk, USA). The Eurofever questionnaire was used to collect retrospectively medical history data. Oxidative stress was determined by measuring spectrophotometrically thiobarbituric acid reactive substances (TBARS) in plasma and erythrocytes, as well as advanced oxidation protein products in plasma. Superoxide dismutase (SOD) activity was determined by McCord and Fridovich method in plasma and erythrocytes, while the catalase erythrocyte activity was assessed using a catalase ELISA kit.ResultsWe found heterozygous carriers of K695R/N mutations in 5 %, E148Q/N mutations in 6 %, R202Q homozygous polymorphism in 10 % and heterozygous R202Q alterations in 45 % of healthy volunteers. The MEFV mutation carriers and R202Q polymorphism homozygotes reported significantly more often recurrent febrile episodes (p = 0.009), diffuse abdominal pain (p = 0.025), and malaise (p = 0.012) compared to non-carriers. Erythrocyte TBARS levels and plasma SOD activity were higher in persons with MEFV mutations and R202Q/R202Q (p = 0.03 and p = 0.049, respectively).ConclusionsHealthy individuals may bear E148Q and K695R MEFV gene mutations, as well as R202Q polymorphism in homozygous state. The determined gene alterations contribute to a subtle oxidative stress and may be associated with more frequent episodes of fever and unspecific inflammatory manifestations. An incomplete penetrance or variable expressivity of R202Q in populations of different ethnicity could influence the expression of autoinflammatory diseases phenotype.