Pioneers in Asthma:
Where is the science leading us?

Written by:

Maria Belvisi

SVP and Head of Research and Early Development Respiratory & Immunology, AstraZeneca

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While recent treatment advances have helped millions of people worldwide better manage their asthma, we know many more remain underserved and continue to struggle – up to 26 million people worldwide are estimated to have severe asthma and approximately 20% of these patients may be uncontrolled.1-3 Now more than ever, we must urgently prioritise continued innovation in asthma research.

We’re doing this by innovating and building on our 50-year heritage in respiratory care to pursue scientific breakthroughs that will revolutionise our understanding of asthma. By understanding the pathophysiology of asthma and much-needed new advancements, we can improve patient care and outcomes.

Our bold research ambition is to eliminate preventable attacks among people with all severities of asthma and achieve on-treatment clinical remission.



New frontiers in research

In the past decade, scientific understanding of asthma has advanced considerably. Our knowledge of the complex biology behind asthma inflammation has led to an appreciation of the heterogeneous nature of the disease and the identification of a broad range of asthma phenotypes, marked by different drivers of airway inflammation.4-7

From this knowledge, the discovery of several biologic therapies has provided much-needed solutions for many severe asthma patients. However, there remains vast potential to improve treatment particularly for patients with unknown, unclear, or multiple drivers of inflammation.5-8 That’s why we’re working to further expand scientific knowledge around the drivers and biological mechanisms of asthma to tackle the disease pathophysiology in new and powerful ways.

The importance of eosinophils' role in asthma is now well-established: as common effector cells, eosinophils contribute to airway dysfunction and tissue remodelling found in asthma.9-13 Researchers are improving knowledge of eosinophilic asthma and the link to other related inflammatory diseases that share common pathways and disease drivers.9,14 By improving awareness of these related pathologies, we believe our research will lead not only to innovative understanding of this complex area but also to earlier detection and intervention for those affected. 

Advancing epithelial science

Epithelial science is a new frontier in asthma research, and biologists are working to better characterise the key role of the airway epithelium.15-19

We’re building on our understanding of epithelial biology by modelling the airway in vitro. This will allow us to better examine cell abnormalities, along with the effects of cytokines on cellular processes.20 We’re also investigating non-invasive nasal sampling technology to assess detection of epithelial cytokines following exposure to an allergen.21 There are many benefits to non-invasive sampling, including that it is easy to perform and thus suitable for frequent sampling.21

Together, this and our other ongoing research, will help us to better understand the role of the epithelium in asthma (and potentially other inflammatory diseases). This research is crucial in expanding our knowledge and providing new focus to help target the remaining unmet needs in asthma.

Next-generation therapeutics

Beyond understanding underlying biology, there are three key areas in which we are innovating to develop our next generation therapeutics and achieve our long-term goal of disease modification and clinical remission.

We are looking at new drug modalities such as bispecific fragment antibodies and Anticalin® proteins to complement the more established small molecules and monoclonal antibodies (mAbs) treatments.

We're leveraging multiple highly phenotyped cohorts which include human genomic data sets, such as those from our real-world NOVELTY trial. Also, we’re using machine learning to identify new targets and through the identification of new patient subgroups, advance the development of precision medicines for asthma.22,23 We will soon be able to move beyond identifying eligible patients by traditional biomarkers such as eosinophils, fractional exhaled nitric oxide (FeNO) and serum immunoglobulin E (IgE). Instead, matching patients to treatments via biomarkers including genetic signatures, enabling physicians to deliver the right treatment to the right patient at the right time.21,24

Accelerating the speed at which these new therapy directions reach patients is vital, and creating the next generation of clinical trials by leveraging digital health tools to enhance our capabilities around running virtual trials. This decentralised approach allows people to take part in a way that's more convenient for them whilst also using transformative endpoints to demonstrate disease modification.25

The future of asthma

We know that many people with asthma are underserved today and that asthma remains a significant public, and personal, health challenge.1,26 As pioneers in asthma, we are committed to continuing to push the boundaries of science to transform the lives of people living with this condition and give them a better future with the care they deserve.


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References

1. Global Asthma Network. The Global Asthma Report 2022. Available at: http://globalasthmareport.org/index.html [Last acccessed: April 2023]

2. Peters SP, et al. Uncontrolled sathma: a review of the prevalene, disease burden an doptions for treatment. Respir Med 2006;100(7): 1139-51

3. Chung, KF et al. International ERS/ATS guidelines on definition, evaluation and treatment of severe asthma. The Eur Resp Jour 2014; 43: 343-73.

4. Wenzel S. Severe asthma in adults. Am J Respir Crit Care Med. 2005; 172: 149-160.

5. Hyland ME, Masoli M, Lanario JW, et al. A Possible Explanation for Non-responders, Responders and Super-responders to Biologics in Severe Asthma. Explor Res Hypothesis Med. 2019; 4:35–38.

6. Tran TN, Zeiger RS, Peters SP, et al. Overlap of atopic, eosinophilic, and TH2-high asthma phenotypes in a general population with current asthma. Ann Allergy Asthma Immunol. 2016; r116:37–42.

7. Godar M, Blanchetot C, de Haard H, et al. Personalized medicine with biologics for severe type 2 asthma: current status and future prospects. MAbs. 2018; 10 (1): 34‐45.

8. Amaral et al. Having concomitant asthma phenotypes is common and independently relates to poor lung function in NHANES 2007-2012. Clin Trans Allergy. 2018 May 4;8:13.

9. Ramirez GA, Yacoub MR, Ripa M, et al. Eosinophils from physiology to disease: a comprehensive review. Biomed Res Int. 2018; 9095275.

10. Rothenberg ME, Hogan SP. The eosinophil. Annu Rev Immunol. 2006; 24:147-174

11. Rosenberg HF, Dyer KD, Foster PS. Eosinophils: changing perspectives in health and disease. Nat Rev Immunol. 2013; 13 (1): 9-22.

12. Trivedi SG, Lloyd CM. Eosinophils in the pathogenesis of allergic airways disease. Cell Mol Life Sci. 2007; 64 (10):1269-1289.

13. Carr TF, Berdnikovs S, Simon HU, et al. Eosinophilic bioactivities in severe asthma. World Allergy Organ J. 2016; 9: 21.

14. Bachert C, Claeys SE, Tomassen P, et al. Rhinosinusitis and asthma: a link for asthma severity. Curr Allergy Asthma Rep. 2010; 10(3): 194-201.

15. Bartemes KR, Kita H. Dynamic role of epithelium-derived cytokines in asthma. Clinical Immunology 2012 Jun;143(3):222-235.

16. Al-Sajee D, Oliveria JP, Sehmi R, et al. Antialarmins for treatment of asthma: future perspectives. Curr Opin Pulm Med. 2018 Jan;24(1):32-41.

17. Lambrecht BN, Hammad H, Fahy JV. The Cytokines of Asthma. Immunity. 2019 Apr 16;50(4):975-991.

18. Wark PA, Gibson PG. Asthma exacerbations . 3: Pathogenesis. Thorax. 2006 Oct;61(10):909-15.

19. Wark PA, Simpson J, Hensley MJ, Gibson PG. Airway inflammation in thunderstorm asthma. Clin Exp Allergy. 2002 Dec;32(12):1750-6.

20. Usmani, Omar S et al. “Consistent Pulmonary Drug Delivery with Whole Lung Deposition Using the Aerosphere Inhaler: A Review of the Evidence.” International journal of chronic obstructive pulmonary disease vol. 16 113-124. 2021.

21. Caruso, C et al. “Nasal Cytology: A Easy Diagnostic Tool in Precision Medicine for Inflammation in Epithelial Barrier Damage in the Nose. A Perspective Mini Review.” Frontiers in allergy vol. 3 768408. 2022.

22. Clinicaltrials.gov. Observational Study of Obstructive Lung Disease (NOVELTY). Available at: http://clinicaltrials.gov/ct2/show/NCT02760329. [Last accessed: April 2023].

23. Astley, Joshua R et al. “A Dual-Channel Deep Learning Approach for Lung Cavity Estimation From Hyperpolarized Gas and Proton MRI.” Journal of magnetic resonance imaging: JMRI, 10.1002/jmri.28519. 14 Nov. 2022, doi:10.1002/jmri.28519

24. Martin, Maria J., et al. “Effects of Therapeutic Antibodies on Gene and Protein Signatures in Asthma Patients: A Comparative Systematic Review.” Biomedicines, vol. 10, no. 2, Jan. 2022, p. 293. Crossref, http://doi.org/10.3390/biomedicines10020293.

25. AstraZeneca Digital Health. Available at: http://349mi.goudounet.com/r-d/digital-health-revolutionising-healthcare-for-patients.html. [Last Accessed: April 2023].

26. Menzies-Gow, A., et al. A Renewed Charter: Key Principles to Improve Patient Care in Severe Asthma. Advances in Therapy. 39. 10.1007/s12325-022002340-w. 2022.


Veeva ID: Z4-53920
Date of preparation: May 2023