Childhood asthma clusters reveal neutrophil-predominant phenotype with distinct gene expression
Journal
Allergy: European Journal of Allergy and Clinical Immunology
Journal Volume
73
Journal Issue
10
Pages
2024-2032
Date Issued
2018
Author(s)
Su M.-W.
Lin W.-C.
Tsai C.-H.
Chou C.-C.
Wu Y.-F.
Yeh Y.-L.
Lee Y.L.
Abstract
Background: Childhood asthma comprises different phenotypes with complex pathophysiology. Different asthma phenotypes evoke various clinical symptoms and vary in their responses to treatments. Methods: We applied k-means clustering algorithm of twelve objective laboratory tests among 351 asthmatic children enrolled in the Taiwanese Consortium of Childhood Asthma Study (TCCAS). We constructed gene expression profiles of peripheral blood mononuclear cells (PBMC) from children with different asthma phenotypes. Results: Five distinct phenotypes of childhood asthma were identified and can be characterized by either eosinophil-predominant or neutrophil-predominant inflammatory characteristics. In the gene expression profile analysis, significant differences were noted for neutrophil-predominant asthma, compared with samples from all the other asthma phenotypes. The vast majority of the differentially expressed genes in neutrophil-predominant asthma was associated with corticosteroid response. From an independent inhaled corticosteroid (ICS) response cohort, we also found neutrophils could be activated in this severe asthma phenotype and neutrophil-predominant asthma may be associated with corticosteroid nonresponsiveness. Conclusion: Phenotype clustering of childhood asthma can be helpful to identify clinically relevant patients and reveal different inflammatory characteristics in asthmatic children. Neutrophil-predominant asthma is the most severe asthma phenotype with poor corticosteroid response. Gene expression profile of different asthma phenotypes not only improve our knowledge of childhood asthma, but also can guide asthma precision medicine. ? 2018 EAACI and John Wiley and Sons A/S. Published by John Wiley and Sons Ltd.
SDGs
Other Subjects
corticosteroid; corticosteroid; transcriptome; adolescent; algorithm; Article; asthma; child; clinical feature; corticosteroid therapy; eosinophil; female; gene expression; gene expression profiling; human; human cell; major clinical study; male; neutrophil; peripheral blood mononuclear cell; phenotype; priority journal; treatment response; asthma; classification; cluster analysis; genetics; inflammation; mononuclear cell; neutrophil; pathology; phenotype; Taiwan; Adrenal Cortex Hormones; Algorithms; Asthma; Child; Cluster Analysis; Eosinophils; Female; Humans; Inflammation; Leukocytes, Mononuclear; Male; Neutrophils; Phenotype; Taiwan; Transcriptome
Publisher
Blackwell Publishing Ltd
Type
journal article