Invitation to take part in "Global", "International", and "Worldwide" conferences seem attractive and prestigious and often with affiliation in Europe, USA, Japan or other well-developed Asia countries. Moreover, the possibility of sharing a stage with a "top speaker" and/or eligibility for reduced registration and accommodation fees and being listed in the abstract book on the "international" level might be a hook not only for young researchers but even for experienced ones. A broad range of submissions, low processing fees, increasing authors' citations, high "local" impact factor, an invitation to write an article for money, "gift-authorship”, suboptimal author guidelines or special offers.

RATIONALE: Precision allergy molecular diagnostics allows assessment of cross-reactivity between pollen and food allergens using multiplex
measurement arrays.
METHODS: Data from 8016 ALEX tests performed in different regions of Ukraine in 2017-2019 were assessed in patients from 1 to 78 years old.Correlation analysis was performed by the Spearman method.
RESULTS: Cross-reactions were mostly seen with Betulaceae pollen groups. Sensitization to Alnus, Betula and Corylus pollen alone expressed cross-reactivity to other pollen types in 55-60 % of cases. 51 % of pateints sensitive to Bet v 2 profilin were sensitized to olive pollen profilin Ole e 2 and of date palm profilin Pho d 2. 51-53 % of patients were sensitized to PR-10 Bet v 1 of Betula pollen and Ara h 8 peanut allergen. 52 to 60 % of patients were sensitized to birch and alder pollen PR-10 allergens and to Mal d 1 of apple from the same group. Cross-reaction between alder and celery PR-10 allergens (Aln g 1 and Api g 1) was 50 %. 50 % of patients reacted to profilins of birch and latex (Bet v 2 and Hev b 8).
CONCLUSIONS: Pollen-targeted allergen-specific immunotherapy may possibly impact pollen-food oral allergy syndromes based upon allergen
cross-reactivit.