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Efficacy of Tezepelumab in Patients with Severe, Uncontrolled Asthma with and without Nasal Polyposis: A Post Hoc Analysis of the Phase 2b PATHWAY Study

Authors Emson C, Corren J, Sałapa K, Hellqvist Å, Parnes JR, Colice G

Received 9 November 2020

Accepted for publication 6 January 2021

Published 3 February 2021 Volume 2021:14 Pages 91—99

DOI https://doi.org/10.2147/JAA.S288260

Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 6

Editor who approved publication: Dr Luis Garcia-Marcos


Claire Emson,1 Jonathan Corren,2 Kinga Sałapa,3 Åsa Hellqvist,4 Jane R Parnes,5 Gene Colice6

1Translational Science and Experimental Medicine, Research and Early Development, Respiratory and Immunology, BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, USA; 2David Geffen School of Medicine, University of California, Los Angeles (UCLA), Los Angeles, CA, USA; 3Biometrics, Late-Stage Development, Respiratory and Immunology, BioPharmaceuticals R&D, AstraZeneca, Warsaw, Poland; 4Biometrics, Late-Stage Development, Respiratory and Immunology, AstraZeneca, Gothenburg, Sweden; 5Amgen, Thousand Oaks, CA, USA; 6Late-Stage Development Respiratory and Immunology, BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, USA

Correspondence: Claire Emson
AstraZeneca, One MedImmune Way, Gaithersburg, MD, 20878, USA
Tel +13013980304
Email Claire.emson@astrazeneca.com

Background: Tezepelumab is a human monoclonal antibody that blocks thymic stromal lymphopoietin, an epithelial cytokine implicated in asthma pathogenesis, from binding to its heterodimeric receptor. In the phase 2b PATHWAY study, tezepelumab significantly reduced annualized asthma exacerbation rates (AAERs) versus placebo, irrespective of baseline disease characteristics, and improved lung function and symptom control, in adults with severe, uncontrolled asthma. This post hoc analysis assessed the efficacy of tezepelumab in adults with severe, uncontrolled asthma with and without nasal polyposis (NP).
Methods: In this post hoc analysis of the PATHWAY study (NCT02054130), participants (N=550) were randomized 1:1:1:1 to receive subcutaneous tezepelumab 70 mg every 4 weeks (Q4W), 210 mg Q4W or 280 mg every 2 weeks (Q2W), or placebo Q2W, for 52 weeks. The AAER over 52 weeks and the change from baseline to week 52 in blood eosinophil count, fractional exhaled nitric oxide (FeNO) levels and serum levels of interleukin (IL)-5 and IL-13 with tezepelumab 210 mg (the phase 3 dose) and placebo were analyzed in patients grouped by self-reported presence (NP+) or absence (NP−) of NP at screening.
Results: At baseline, NP+ patients had higher blood eosinophil counts, higher FeNO levels and higher serum IL-5 and IL-13 levels than NP− patients. Tezepelumab 210 mg reduced the AAER versus placebo to a similar extent in both NP+ and NP− patients (NP+, 75% [95% confidence interval (CI): 15, 93], n=23; NP−, 73% [95% CI: 47, 86], n=112). Patients treated with tezepelumab 210 mg demonstrated greater reductions in blood eosinophil count and levels of FeNO, IL-5 and IL-13 than placebo-treated patients, irrespective of NP status.
Discussion: Tezepelumab reduced exacerbations and reduced type 2 inflammatory biomarkers in patients with and those without NP, supporting its efficacy in a broad population of patients with severe asthma.

Keywords: asthma, biomarkers, nasal polyps, sinusitis, tezepelumab, thymic stromal lymphopoietin

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