TheraRadar

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Data updated: Mar 10, 2026

FASENRA

BENRALIZUMAB Interleukin 5 Receptor alpha-directed Antibody Interactions
Immunology Approved 2017-11-14

FASENRA (benralizumab) is an interleukin-5 receptor alpha-directed cytolytic monoclonal antibody. It is indicated as an add-on maintenance treatment for adult and pediatric patients aged 6 years and older with severe asthma and an eosinophilic phenotype. Additionally, the medication is approved for the treatment of adult patients with eosinophilic granulomatosis with polyangiitis (EGPA). It is not intended for the relief of acute bronchospasm or status asthmaticus.

Source: FDA Label • AstraZeneca • Interleukin-5 Receptor alpha-directed Cytolytic Antibody

How FASENRA Works

Benralizumab binds directly to the alpha subunit of the human interleukin-5 receptor (IL-5Rα) located on the surface of eosinophils and basophils. This binding facilitates an interaction with immune effector cells, such as natural killer cells, to trigger antibody-dependent cell-mediated cytotoxicity (ADCC). This process leads to the apoptosis, or programmed cell death, of eosinophils and basophils. By reducing these cell types, the drug addresses a key component of the inflammation associated with asthma and EGPA.

Source: FDA Label
4
Indications
--
Phase 3 Trials
8
Years on Market

Details

Status
Prescription
First Approved
2017-11-14
Routes
INJECTION
Dosage Forms
INJECTABLE

Companies

Active Ingredient: BENRALIZUMAB

FASENRA Approval History

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What FASENRA Treats

2 indications

FASENRA is approved for 2 conditions since its original approval in 2017. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Asthma
  • Eosinophilic Granulomatosis with Polyangiitis
Source: FDA Label

FASENRA Competitors

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3 other drugs also target IL-5. Compare mechanisms, indications, and trial activity.

Drug = Competitor name Company = Manufacturer N indic. = FDA-approved indications → Date = Patent/exclusivity expiry

Competitors share the same molecular target (IL-5). Earlier expiry dates signal biosimilar/generic opportunities.

Drugs Similar to FASENRA

FDA-approved drugs for similar conditions. Compare mechanisms and indications to understand treatment alternatives.

NUCALA
MEPOLIZUMAB
2 shared
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Shared indications:
AsthmaEosinophilic Granulomatosis with Polyangiitis
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STRIDES PHARMA INTL
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ALVESCO
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COVIS
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ARNUITY ELLIPTA
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ASMANEX HFA
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BECLOMETHASONE DIPROPIONATE
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AMNEAL IRELAND LTD
Shared indications:
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BETAMETHASONE ACETATE AND BETAMETHASONE SODIUM PHOSPHATE
BETAMETHASONE ACETATE
1 shared
Hikma
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BREO ELLIPTA
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GSK
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BREYNA
BUDESONIDE
1 shared
Viatris
Shared indications:
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CELESTONE SOLUSPAN
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1 shared
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Shared indications:
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CINQAIR
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1 shared
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DEPO-MEDROL
METHYLPREDNISOLONE ACETATE
1 shared
Pfizer
Shared indications:
Asthma
DEXAMETHASONE
DEXAMETHASONE
1 shared
ALVOGEN
Shared indications:
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DEXAMETHASONE INTENSOL
DEXAMETHASONE
1 shared
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Shared indications:
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DEXYCU KIT
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EYEPOINT PHARMS
Shared indications:
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DULERA
FORMOTEROL FUMARATE
1 shared
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Shared indications:
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DUPIXENT
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Regeneron
Shared indications:
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Active Pipeline

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Ongoing clinical trials by development phase

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

FASENRA FDA Label Details

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Indications & Usage

FDA Label (PDF)

FASENRA is an interleukin-5 receptor alpha-directed cytolytic monoclonal antibody (IgG1, kappa) indicated for: • add-on maintenance treatment of adult and pediatric patients aged 6 years and older with severe asthma, and with an eosinophilic phenotype. • treatment of adult patients with eosinophilic granulomatosis with polyangiitis (EGPA). Limitations of Use: Not for relief of acute bronchospasm or status asthmaticus. 1.1 Asthma FASENRA is indicated for the add-on maintenance treatment of adult and pediatric patients aged 6 years and older with severe asthma, and with an eosinophilic phenotype...

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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.