PT - JOURNAL ARTICLE AU - William W. Busse AU - Erik Melén AU - Andrew N. Menzies-Gow TI - Holy Grail: the journey towards disease modification in asthma AID - 10.1183/16000617.0183-2021 DP - 2022 Mar 31 TA - European Respiratory Review PG - 210183 VI - 31 IP - 163 4099 - http://err.ersjournals.com/content/31/163/210183.short 4100 - http://err.ersjournals.com/content/31/163/210183.full SO - EUROPEAN RESPIRATORY REVIEW2022 Mar 31; 31 AB - At present, there is no cure for asthma, and treatment typically involves therapies that prevent or reduce asthma symptoms, without modifying the underlying disease. A “disease-modifying” treatment can be classed as able to address the pathogenesis of a disease, preventing progression or leading to a long-term reduction in symptoms. Such therapies have been investigated and approved in other indications, e.g. rheumatoid arthritis and immunoglobulin E-mediated allergic disease. Asthma's heterogeneous nature has made the discovery of similar therapies in asthma more difficult, although novel therapies (e.g. biologics) may have the potential to exhibit disease-modifying properties. To investigate the disease-modifying potential of a treatment, study design considerations can be made, including: appropriate end-point selection, length of trial, age of study population (key differences between adults/children in physiology, pathology and drug metabolism) and comorbidities in the patient population. Potential future focus areas for disease-modifying treatments in asthma include early assessments (e.g. to detect patterns of remodelling) and interventions for patients genetically susceptible to asthma, interventions to prevent virally induced asthma and therapies to promote a healthy microbiome. This review explores the pathophysiology of asthma, the disease-modifying potential of current asthma therapies and the direction future research may take to achieve full disease remission or prevention.Asthma is a complex, heterogeneous disease, which currently has no cure; this review explores the disease-modifying potential of asthma therapies and the direction future research may take to achieve disease remission or prevention. https://bit.ly/31AxYou