A molecular sensitization map of European children reveals exposome- and climate-dependent sensitization profiles

M B Gea Kiewiet, Christian Lupinek, Susanne Vrtala, Sandra Wieser, Alexandra Baar, Renata Kiss, Inger Kull, Eric Melén, Magnus Wickman, Daniela Porta, Davide Gori, Ulrike Gehring, Rob Aalberse, Jordi Sunyer, Marie Standl, Joachim Heinrich, Dagmar Waiblinger, John Wright, Josep M Antó, Jean BousquetMarianne van Hage, Rudolf Valenta

Research output: Journal article (peer-reviewed)Journal article

12 Citations (Scopus)


Background: Understanding differences in sensitization profiles at the molecular allergen level is important for diagnosis, personalized treatment and prevention strategies in allergy. Methods: Immunoglobulin E (IgE) sensitization profiles were determined in more than 2800 sera from children in nine population-based cohorts in different geographical regions of Europe; north [BAMSE (Sweden), ECA (Norway)], west/central [PIAMA (the Netherlands), BiB (the United Kingdom), GINIplus (Germany)], and south [INMA Sabadell and Gipuzkoa (Spain) and ROBBIC Rome and Bologna (Italy)] using the MeDALL-allergen chip. Results: Sensitization to grass pollen allergen, Phl p 1, and to major cat allergen, Fel d 1, dominated in most European regions whereas sensitization to house dust mite allergens Der p 1, 2 and 23 varied considerably between regions and were lowest in the north. Less than half of children from Sabadell which has a hot and dry climate were sensitized to respiratory allergens, in particular house dust mite allergens as compared to Gipuzkoa nearby with a more humid climate. Peanut allergen Ara h 1 was the most frequently recognized class 1 food allergen in Northern/Western Europe, while the fruit allergens Pru p 3, Act d 1 and 2 were prominent in Southern and Western/Central Europe. Ves v 5-sensitization dominated in North and West/Central Europe. Conclusion: We show regional, exposome- and climate-dependent differences in molecular IgE-reactivity profiles in Northern, Western/Central and Southern Europe which may form a molecular basis for precision medicine-based approaches for treatment and prevention of allergy.

Original languageEnglish
Pages (from-to)2007-2018
Number of pages12
JournalAllergy: European Journal of Allergy and Clinical Immunology
Issue number7
Early online date23 Feb 2023
Publication statusPublished - Jul 2023


  • Europe
  • IgE reactivity
  • MeDALL chip
  • allergen molecules
  • exposome
  • sensitization profile

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology


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