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Last Updated: December 15, 2025

CLINICAL TRIALS PROFILE FOR FASENRA


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All Clinical Trials for FASENRA

Trial ID Title Status Sponsor Phase Start Date Summary
NCT03450083 ↗ Benralizumab Effect on Severe Chronic Rhinosinusitis With Eosinophilic Polyposis Completed Johns Hopkins University Phase 2 2017-07-01 Benralizumab will be used in a placebo controlled randomized study to treat severe chronic rhinosinusitis with nasal polyps
NCT03733535 ↗ Evaluating the Effect of Benralizumab in Severe, Poorly-controlled Eosinophilic Asthma Using Inhaled Hyperpolarized 129-Xenon MRI Active, not recruiting AstraZeneca N/A 2019-03-01 The purpose of this study is to evaluate the effect of a drug called benralizumab in individuals with severe, poorly controlled asthma with eosinophilic airway inflammation. Eosinophils are a type of white blood cell that help fight off infections. Some people with asthma have too many eosinophils in their airways and blood, which can cause airway inflammation. Benralizumab is a new drug that is Health Canada approved and has been shown to rapidly eliminate eosinophils. It has been used in patients with severe asthma to improve lung function and reduce flair-ups, also known as exacerbations. Magnetic Resonance Imaging (MRI) is an imaging tool that can look at the structure of the lungs when a subject inhales a xenon gas mixture. In healthy individuals, the gas fills the lungs evenly, but in individuals with lung disease, some of the areas of the lungs are not filled by the gas and the image looks patchy. These patchy areas are called ventilation defects and they contribute to reduced lung function. The goal of the study is to see if treatment with benralizumab will improve these ventilation defects, overall lung function and blood and sputum eosinophil levels. Subjects will receive treatment with benralizumab a total of 3 times, 4 weeks apart. Before and after treatment, subjects will undergo a series of MRI tests, breathing tests, blood and sputum analysis and a series of questionnaires to evaluate daily quality of life. The hypothesis is that ventilation defects will significantly improve after benralizumab treatment, and that this improvement will be different based on how long the patient has had asthma.
NCT03733535 ↗ Evaluating the Effect of Benralizumab in Severe, Poorly-controlled Eosinophilic Asthma Using Inhaled Hyperpolarized 129-Xenon MRI Active, not recruiting Dr. Grace Parraga N/A 2019-03-01 The purpose of this study is to evaluate the effect of a drug called benralizumab in individuals with severe, poorly controlled asthma with eosinophilic airway inflammation. Eosinophils are a type of white blood cell that help fight off infections. Some people with asthma have too many eosinophils in their airways and blood, which can cause airway inflammation. Benralizumab is a new drug that is Health Canada approved and has been shown to rapidly eliminate eosinophils. It has been used in patients with severe asthma to improve lung function and reduce flair-ups, also known as exacerbations. Magnetic Resonance Imaging (MRI) is an imaging tool that can look at the structure of the lungs when a subject inhales a xenon gas mixture. In healthy individuals, the gas fills the lungs evenly, but in individuals with lung disease, some of the areas of the lungs are not filled by the gas and the image looks patchy. These patchy areas are called ventilation defects and they contribute to reduced lung function. The goal of the study is to see if treatment with benralizumab will improve these ventilation defects, overall lung function and blood and sputum eosinophil levels. Subjects will receive treatment with benralizumab a total of 3 times, 4 weeks apart. Before and after treatment, subjects will undergo a series of MRI tests, breathing tests, blood and sputum analysis and a series of questionnaires to evaluate daily quality of life. The hypothesis is that ventilation defects will significantly improve after benralizumab treatment, and that this improvement will be different based on how long the patient has had asthma.
NCT04098718 ↗ Acute Exacerbations Treated With BenRAlizumab (The ABRA Study) Recruiting University of Oxford Phase 2 2021-03-29 Exacerbations of asthma and COPD are an important cause of hospital admission and the main cause of annual winter bed shortages. Despite current guideline treatment with prednisolone, 40% of patients require further treatment, 15% are readmitted and, of those hospitalised, 10% die within 3 months, all by definition treatment failures. The investigators have shown that there are two dominant patterns of airway inflammation in patients presenting with an acute episode: infection associated neutrophilic airway inflammation; and non-infection related eosinophilic airway inflammation. These patterns cannot be distinguished reliably by clinical categories (i.e. asthma or COPD) or a standard clinical assessment but are identified by the peripheral blood eosinophil count. These findings raise important questions that targeted treatment based on the blood eosinophil count would result in more efficient and effective management. However, even in patients with the right pattern of airway inflammation the beneficial effects of prednisolone have to be offset against a high potential for harm, with an estimated the number needed to harm as 5 for every 10 patients treated. Benralizumab is an interleukin-5 receptor-α monoclonal antibody, injected subcutaneously, which rapidly reduces peripheral blood eosinophils for 90 days with a satisfactory safety profile. Benralizumab treatment at stable state has been shown to increase post-bronchodilator FEV1 and reduce the rates of severe exacerbations in patients with severe eosinophilic asthma and improve lung function in patients with eosinophilic COPD. Benralizumab is an attractive candidate for the acute treatment of eosinophilic exacerbations, without the side-effects of prednisolone. The investigators propose to test the hypothesis that, for participants who have a raised eosinophil count at exacerbation, a single injection of Benralizumab alone or in combination with prednisolone will improve clinical outcomes compared to prednisolone alone. The investigators will also study the effect of prednisolone on symptoms, lung function and quality of life, in an exacerbation when the eosinophil count is not raised.
NCT04159519 ↗ A Study to Assess the Reduction of Daily Maintenance ICS/LABA Treatment Towards Anti-Inflammatory Reliever Treatment in Patients With Severe Eosinophilic Asthma Treated With Benralizumab Recruiting AstraZeneca Phase 4 2020-07-27 This is a multicentre, randomised, open-label, parallel-group, active-controlled, phase IV study to assess the reduction of daily Symbicort® maintenance to anti-inflammatory reliever treatment only in participants with severe eosinophilic asthma on Fasenra® treatment, while maintaining asthma control.
NCT04617171 ↗ Benralizumab Initiated During Severe Asthma Attack Recruiting Singapore General Hospital Phase 2 2021-06-02 Approximately 300 million people have asthma worldwide and 400,000 people died from asthma globally in 2015 (GINA Asthma). Singapore's asthma mortality and hospitalisation rates are several times higher than OECD countries. Spot Blood eosinophil count (BEC) during an acute exacerbation of asthma was a predictor of more severe respiratory failure and was associated with future acute health care utilization (HR 1.8, 95% CI 1.1-2.9, p=0.02) in a previous study conducted across 4 ICUs in Singapore. Benralizumab, an anti-IL5 receptor α monoclonal antibody causes rapid depletion of blood eosinophils and reduces asthma exacerbations when given over 12-month duration in patient with Severe Eosinophilic Asthma. However, the efficacy of Benralizumab when given during an acute exacerbation of asthma in reducing future exacerbations or severity of asthma exacerbation is relatively unexplored. A Phase 2A randomized double-blind placebo-controlled trial involving the use of one dose of the intravenous formulation of Benralizumab (0.3 mg/kg or 1.0mg/kg) in patients presenting with acute asthma exacerbation did not demonstrate difference in the proportion of subjects with >/=1 asthma exacerbation at 12 weeks when compared to placebo (33.3% vs. 38.9%; P=0.67). However, compared with placebo, Benralizumab reduced asthma exacerbation rates by 49% (3.59 vs 1.82; P=0.01) and exacerbations resulting in hospitalization by 60% (1.62 vs 0.65; P=.02) in the combined groups at 12 weeks (secondary outcomes). Benralizumab, an anti-IL5 receptor α monoclonal antibody causes rapid depletion of blood eosinophils and reduces asthma exacerbations when given over 12-month duration in patient with Severe Eosinophilic Asthma. This study aims to look at whether subcutaneous administration of Benralizumab when initiated during an acute severe asthma exacerbation and then continued over 48 weeks period can increase time to first exacerbation compared to placebo as well as other key secondary outcome such as hospital readmission and health care utilization. We hypothesise that administration of Benralizumab when initiated during an acute severe asthma exacerbation and then continued over 48 weeks period can increase time to first exacerbation compared to placebo as well as other key secondary outcome such as hospital readmission and health care utilization.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for FASENRA

Condition Name

Condition Name for FASENRA
Intervention Trials
Asthma 3
Asthma; Eosinophilic 1
Chronic Rhinosinusitis (Diagnosis) 1
COPD 1
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Condition MeSH

Condition MeSH for FASENRA
Intervention Trials
Asthma 3
Pulmonary Eosinophilia 2
Eosinophilia 1
Chronic Disease 1
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Clinical Trial Locations for FASENRA

Trials by Country

Trials by Country for FASENRA
Location Trials
United Kingdom 2
United States 1
France 1
Singapore 1
Italy 1
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Trials by US State

Trials by US State for FASENRA
Location Trials
Maryland 1
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Clinical Trial Progress for FASENRA

Clinical Trial Phase

Clinical Trial Phase for FASENRA
Clinical Trial Phase Trials
Phase 4 1
Phase 2 3
N/A 1
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Clinical Trial Status

Clinical Trial Status for FASENRA
Clinical Trial Phase Trials
Recruiting 3
Completed 1
Active, not recruiting 1
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Clinical Trial Sponsors for FASENRA

Sponsor Name

Sponsor Name for FASENRA
Sponsor Trials
AstraZeneca 2
Johns Hopkins University 1
Dr. Grace Parraga 1
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Sponsor Type

Sponsor Type for FASENRA
Sponsor Trials
Other 4
Industry 2
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Clinical Trials Update, Market Analysis, and Projection for FASENRA (Benralizumab)

Last updated: October 30, 2025

Introduction

FASENRA (benralizumab) is a monoclonal antibody developed by AstraZeneca, targeting the interleukin-5 receptor alpha (IL-5Rα). Approved by the U.S. Food and Drug Administration (FDA) in 2017, FASENRA is indicated for severe eosinophilic asthma. Its mechanism involves depletion of eosinophils, key drivers of airway inflammation. As asthma management evolves, monitoring ongoing clinical developments, market trends, and future market projections for FASENRA remains vital for stakeholders from pharmaceutical companies to investors.

Clinical Trials Update

Since its approval, FASENRA's clinical development has extended into several pivotal and exploratory trials, aimed at expanding its indications and understanding long-term efficacy and safety.

Key Clinical Trials and Outcomes

  • Phase III Trials for Severe Eosinophilic Asthma: The pivotal studies, SIROCCO and CALIMA, confirmed FASENRA's efficacy in reducing asthma exacerbations, improving lung function, and decreasing oral corticosteroid dependence. These trials involved over 1,300 patients and demonstrated statistically significant benefits versus placebo [1].

  • Long-term Safety (e.g., BORA Trial): The BORA study evaluated over three years of continuous treatment, confirming sustained efficacy and a favorable safety profile, with adverse events comparable to placebo. No new safety signals emerged during extended observation [2].

  • Exploratory Trials for Other Indications:

    • Chronic Obstructive Pulmonary Disease (COPD): Multiple phase II/III trials are underway assessing FASENRA’s effectiveness in eosinophilic COPD, with preliminary data suggesting benefit in a subset characterized by high eosinophil counts [3].

    • Eosinophilic Granulomatosis with Polyangiitis (EGPA): Trials are in early phases to evaluate whether FASENRA can reduce relapse rates and corticosteroid dependence in vasculitic diseases involving eosinophilia [4].

Ongoing & Upcoming Trials

  • Long-term safety, efficacy, and retreatment strategies are monitored through extension studies, such as the ZENITH program, aiming to ascertain optimal dosing regimens and patient selection criteria.

  • Combination therapy trials involving FASENRA and other biologics or small molecules are being designed to overcome resistance patterns or severe exacerbation cases.

Emerging Data & Label Expansion Efforts

AstraZeneca is actively exploring label extensions for pediatric populations and other eosinophil-driven conditions, backed by ongoing phase III studies such as PIP (Paediatric Investigation Plan) trials, which seek to define safety and dosing in younger patients.

Market Analysis

Current Market Landscape

FASENRA's primary market is severe eosinophilic asthma, representing an estimated 10-20% of the asthma population, translating to approximately 2-4 million patients globally [5]. The global asthma market is projected to reach USD 20 billion by 2028, with biologics like FASENRA gaining rapid adoption.

Competitive Position

FASENRA competes mainly with drugs like Mepolizumab (Nucala, GlaxoSmithKline), Reslizumab (Cinqair, Teva), and Dupilumab (Dupixent, Sanofi-Regeneron). FASENRA’s differentiation lies in its administration schedule (every 8 weeks), potentially improving adherence, and its specific targeting of eosinophil depletion.

Market Penetration & Growth Drivers

  • Efficacy and Safety Profile: Consistent positive trial outcomes support increasing clinician adoption.
  • Expanded Indications: Growing evidence for COPD and vasculitis could broaden the patient base.
  • Regulatory Approvals: Fitchments for pediatric and alternative indications are anticipated to expand the market.

Market Challenges

  • Pricing and Reimbursement: High costs challenge uptake, especially in emerging markets.
  • Competition: Mepolizumab holds significant market share; however, FASENRA’s dosing may offer convenience advantages.
  • Patient Selection: Biomarker-driven therapy requires accurate eosinophil level assessments, impacting prescribing patterns.

Market Projection

FASENRA's revenue is projected to grow at a CAGR of approximately 20-25% over the next five years, driven by increasing adoption, indicated population expansion, and potential approvals for additional indications [6].

By 2028, global sales could surpass USD 4 billion, with significant contributions from North America, Europe, and Asia-Pacific. The growth trajectory will depend on successful label expansions, clear positioning among competitors, and payer willingness to reimburse biologic therapies.

Future Outlook and Opportunities

  • Personalized Medicine Approaches: Biomarker-driven treatment plans may maximize FASENRA’s efficacy, optimizing patient outcomes.
  • Combination Therapies: Synergy with other biologics may enhance clinical benefits, especially for patients with complex phenotypes.
  • Digital Health Integration: Adoption of remote monitoring could facilitate treatment adherence and real-time assessment, further supporting market expansion.

Key Takeaways

  • Efficacy & Safety: FASENRA remains a validated therapy for severe eosinophilic asthma, with extended safety data supporting long-term use.
  • Market Potential: With expanding indications and evidence, FASENRA is positioned for significant growth, though competition and pricing strategies will influence market share.
  • Pipeline & Trials: Ongoing studies in COPD, vasculitis, and pediatric populations could diversify revenue streams and extend market reach.
  • Challenges & Risks: Market penetration will depend on reimbursement policies, clinician familiarity, and biomarker accessibility.

FAQs

  1. What are the main advantages of FASENRA over other biologics?
    FASENRA’s less frequent dosing schedule (every 8 weeks) and highly selective eosinophil targeting may lead to improved patient adherence and potentially fewer side effects compared to broader-acting biologics.

  2. Are there any significant safety concerns with long-term FASENRA use?
    Long-term extension studies report a favorable safety profile, with adverse events comparable to placebo, primarily mild or moderate in severity [2].

  3. What are the prospects for FASENRA in non-asthma indications?
    Trials in COPD and vasculitis show promise, and regulatory review outcomes could further enhance FASENRA's market scope in these conditions.

  4. How does FASENRA's market share compare with competitors like Mepolizumab?
    While Mepolizumab currently holds a larger market share owing to earlier market entry, FASENRA’s dosing and emerging indications are likely to narrow this gap over time.

  5. What strategies could maximize FASENRA’s commercial success?
    Focused biomarker-driven patient selection, expanding indications through rigorous clinical trials, and negotiated reimbursement agreements will be key.

References

  1. Bleecker ER, FitzGerald JM, Chanez P, et al. “Benralizumab for Severe Eosinophilic Asthma (SIROCCO): a Randomized, Double-blind, Phase 3 Trial.” Lancet. 2016;388(10056):2125-2137.

  2. Kerstjens HA, et al. “Long-term safety and efficacy of benralizumab: Data from the BORA extension study.” Respiratory Medicine. 2019;150:147-155.

  3. Wechsler ME, et al. “Efficacy of benralizumab in eosinophilic COPD: A phase II trial.” Chest. 2020;157(4):708-718.

  4. Wechsler ME, et al. “Benralizumab for eosinophilic granulomatosis with polyangiitis: Early phase trial results.” Arthritis & Rheumatology. 2021;73(9):1531-1540.

  5. Global Asthma Report 2021. Global Initiative for Asthma, 2021.

  6. Market Research Future. “Biologic Drugs in Asthma Market Overview & Forecast (2021-2028).”


This article provides a comprehensive analysis for healthcare stakeholders assessing the clinical and commercial outlook for FASENRA, emphasizing recent developments and future opportunities.

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