The natural history of asthma and allergy across the lifecourse.Identification of risk factors for asthma and allergy across the lifecourse.Development of risk prediction scores and new diagnostics for asthma.Prevention strategies for asthma and allergy.Phenotyping and endotypic understanding of difficult-to-treat asthma.Understanding the multimorbidity framework of difficult-to-treat asthma.Developing multimodal interventions for difficult-to-treat asthma.