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Multiple atopyphenotypes and theirassociations withasthma: similarfindings from twobirth cohorts Nevena LazicGraham RobertsAdnan Čustović2013 год

Multiple atopy phenotypes and their associations with asthma: similar findings from two birth cohorts
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Аннотация: Abstract Background Although atopic sensitization is one of the strongest risk factors for asthma, its relationship with asthma is poorly understood. We hypothesize that ‘atopy’ encompasses multiple sub‐phenotypes that relate to asthma in different ways. Methods In two population‐based birth cohorts (Manchester and Isle of Wight – IoW), we used a machine learning approach to independently cluster children into different classes of atopic sensitization in an unsupervised manner, based on skin prick and sIgE tests taken throughout childhood and adolescence. We examined the qualitative cluster properties and their relationship to asthma and lung function. Results A five‐class solution best described the data in both cohorts, with striking similarity between the classes across the two populations. Compared with nonsensitized class, children in the class with sensitivity to a wide variety of allergens (~1/3 of children atopic by conventional definition) were much more likely to have asthma ( aOR [95% CI0; 20.1 [10.9–40.2] in Manchester and 11.9 [7.3–19.4] in IoW). The relationship between asthma and conventional atopy was much weaker (5.5 [3.4–8.8] in Manchester and 5.8 [4.1–8.3] in IoW). In both cohorts, children in this class had significantly poorer lung function (FEV 1 /FVC lower by 4.4% in Manchester and 2.6% in IoW; P < 0.001), most reactive airways, highest eNO and most hospital admissions for asthma ( P < 0.001). Conclusions By adopting a machine learning approach to longitudinal data on allergic sensitization from two independent unselected birth cohorts, we identified latent classes with strikingly similar patterns of atopic response and association with clinical outcomes, suggesting the existence of multiple atopy phenotypes.
Год издания: 2013
Авторы: Nevena Lazic, Graham Roberts, Adnan Čustović, Danielle Belgrave, C.M. Bishop, John Winn, John A. Curtin, Syed Hasan Arshad, Angela Simpson
Издательство: Wiley
Источник: Allergy
Ключевые слова: Asthma and respiratory diseases, Allergic Rhinitis and Sensitization, Respiratory and Cough-Related Research
Другие ссылки: Allergy (HTML)
PubMed (HTML)