Asthma Exacerbations: The Genes Behind the Scenes

Area of Science:

• Genetics and genomics
• Respiratory medicine
• Public health

Background:

• Asthma exacerbations (AEs) present a substantial clinical and socioeconomic burden.
• Recent years have seen increased ethnic diversity in genetic studies of AEs, identifying novel genes and pathways.
• Pharmacogenomics and multi-omics approaches are advancing the understanding of genetic variation in AEs.

Purpose of the Study:

• To review the current state of multi-omics research in asthma exacerbations.
• To highlight gaps in current research, particularly regarding epigenetics and the microbiome.
• To emphasize the need for integrated data approaches for precision medicine in AEs.

Main Methods:

• Review of candidate-gene and genome-wide association studies (GWAS).
• Analysis of pharmacogenomic and admixture mapping studies.
• Integration of multi-omics data (genomics, epigenomics, transcriptomics, microbiome).
• Consideration of deep-phenotyping data.

Main Results:

• Genomic studies have identified novel genes and pathobiological processes involved in AEs.
• Pharmacogenomics and admixture mapping aid in prioritizing genomic regions.
• Epigenetic modifications (DNA methylome, histone modifications) and microRNAs in AEs require further investigation.
• Host-airway microbiome interactions are crucial in modulating AE risk.

Conclusions:

• Overcoming the heterogeneity of AEs requires leveraging multi-omics data and deep phenotyping.
• Identifying therapeutic targets and implementing precision medicine for AEs necessitates integrated data strategies.
• Future research should focus on epigenetics, microbiome interactions, and validated microRNA findings.