Fasenra: An Asthma Study

Fasenra Demonstrates Durability Over the Full 8-week Treatment Period

The goal of this observational study is to learn more about the effectiveness of benralizumab (Fasenra, 30 mg every 8 weeks) in maintaining asthma control in people with severe eosinophilic asthma.

Participants will have electronic medication monitors fitted to their usual maintenance inhaler, as well as a study-provided anti-inflammatory rescue inhaler, albuterol-budesonide (AirSupra). These monitors will track when each inhaler is used. Participants will also upload time-stamped photos of their benralizumab administration to their electronic medical records.

Study Overview

• Status: Not yet recruiting
• Conditions: Asthma; Severe Asthma; Eosinophilic Asthma; Severe Eosinophilic Asthma
• Intervention / Treatment: Drug: Budesonide-albuterol; Drug: Benralizumab

Detailed Description

This will be a 26-week prospective, single arm study. At Visit 1 (in-person visit at day -14), scheduled two weeks before they are due for their next dose of benralizumab, participants will provide informed consent, demographics information, and have Adherium electronic medication monitors (EMM) fitted onto their inhaled corticosteroid (ICS)-containing maintenance and inhaled corticosteroid-short-acting β2-agonist (ICS-SABA) reliever medications . The patient-facing research assistant (pRA) will ask participants for the dates they plan to administer each of the following three doses of benralizumab, at 8-week intervals (±7 days), and schedule video visits two, three, and four on those dates to confirm the patient received the benralizumab. If the patient cannot complete a video visit for directly observed therapy of benralizumab administration, they can also upload a time and date stamped photo of themselves administering the benralizumab to their EMR via the MyChart Patient Portal within 48 hours of administration. Participants will continue usual care with their asthma health care professional, and the study team will collect any interval Asthma Control Test (ACT), spirometry (e.g., forced exhalation volume in the first second (FEV1), forced vital capacity (FVC), and FEV1/FVC), and fractional exhaled nitric oxide (FENO) measurements, as well as oral corticosteroid (OCS) use (both OCS bursts and changes in daily OCS dose, as applicable), immediate care visits, emergency department (ED) visits, and hospitalizations for asthma.

The pRA will perform all of their tasks under the supervision of the study investigators (an allergist and immunologist and a pulmonologist). At visit one, the pRA will teach each participant how to: attach the Adherium EMM to their ICS-SABA reliever and ICS-containing maintenance medications; download the Adherium asthma App to their smartphone; pair the EMM with their smartphone App; and view their ICS adherence and ICS-SABA usage, as well as inhalation quality, on the App. Each month, under the supervision of the study investigators, the pRA will review the remote therapeutic monitoring data for each participant's ICS-SABA reliever and ICS-containing maintenance medications and document the results of this review in the patient's chart.

Data collected during the study include:

• Maintenance inhaler use
• Rescue inhaler use
• Dates of benralizumab administration
• Dates of severe asthma exacerbations
• Oral corticosteroid use
• Healthcare visits for asthma
• AIRQ scores
• Results from standard of care assessments, including ACT scores, lung function values, FeNO, and absolute eosinophil counts
• Demographic information, including age, gender, race, ethnicity, and insurance

• Study Type: Interventional
• Enrollment (Estimated): 40
• Phase: Phase 4

Contacts and Locations

• Study Contact: Name: Madeline Snedden; Phone Number: 847-663-8530; Email: madeline.snedden@endeavorhealth.org
• Study Contact Backup: Name: Samantha Gongora; Phone Number: 847-663-8530; Email: samantha.gongora@endeavorhealth.org

Study Locations

• United States
  • Illinois
    • Skokie, Illinois, United States, 60077
      • Endeavor Health
      • Contact: Madeline Snedden; Phone Number: 847-663-8530; Email: madeline.snedden@endeavorhealth.org
      • Contact: Samantha Gonogora; Phone Number: 847-663-8530; Email: samantha.gongora@endeavorhealth.org
      • Principal Investigator: Giselle Mosnaim, MD, MS
      • Sub-Investigator: Sarah Gray, MD, MPH
      • Sub-Investigator: Oscar Salas, MD

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. Capable of giving signed informed consent, which includes compliance with the requirements and restrictions listed in the ICF.
2. At least 18 years of age at the time of signing the informed consent at Visit 1.
3. Documented asthma diagnosis ≥12 months prior to Visit 1. This may be documented by physician-diagnosis or by documented pharmacy records.
4. Treated with a daily ICS-containing maintenance inhaler for asthma at a stable dose for ≥3 months prior to Visit 1. This inhaler may contain ICS alone, or in combination with a LABA or LABA-LAMA. The prescribed inhaler must be compatible with a study-provided EMM (see Appendix A).
5. Prescribed a SABA-containing reliever inhaler, AND willing to use study-provided ICS-SABA reliever with EMM provided by the study.
6. Prescribed benralizumab for severe eosinophilic asthma for ≥6 months AND has had ≥4 benralizumab doses (3 loading doses + at least 1 8-week dosing interval).

Exclusion Criteria:

1. Current smoker (including tobacco, vaping, and marijuana). Former smokers must have stopped ≥6 months prior to Visit 1.
2. Has a known, preexisting, clinically significant cardiac, endocrine, autoimmune, metabolic, neurological, renal, gastrointestinal, hepatic, hematological, or any other system abnormalities that are uncontrolled with standard treatment, which, in the investigator's opinion, would compromise the participant's safety, interfere with the interpretation of the study results or otherwise preclude participation or protocol adherence.
3. History of use of any biologic therapy for asthma (other than benralizumab) within 5 half-lives or 5 months, whichever is longer, before Visit 1.

4. A severe asthma exacerbation within 4 weeks of Visit 1. For this study, a severe asthma exacerbation is defined as an episode of worsening asthma symptoms that result in at least one of the following:

   • Use of systemic corticosteroids for at least 3 consecutive days (or a single depo-injectable dose of corticosteroids)
   • An inpatient hospitalization (defined as admission to an inpatient facility and/or evaluation and treatment in a healthcare facility for ≥24 hours) due to asthma
   • An emergency department visit (defined as evaluation and treatment for <24 hours in an emergency department or urgent care) due to asthma that required systemic corticosteroids (as per above)
5. Current enrollment in an asthma-related clinical trial.
6. Any known history of adverse reactions to budesonide-albuterol.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Other: Open-Label benralizumab + budesonide-albuterol; Participants will continue their usual treatment with benralizumab (300mg every 8 weeks) and inhaled corticosteroid-containing maintenance inhaler (as prescribed by their usual clinician). During the study, participants will be asked to switch their usual reliever inhaler to study-provided budesonide-albuterol (also known as AirSupra).	Drug: Budesonide-albuterol; Budesonide-albuterol will be used as an anti-inflammatory reliever inhaler for the duration of the study.; Other Names: AirSupra; Drug: Benralizumab; Participants will continue using benralizumab as prescribed. Benralizumab is not supplied by the study.; Other Names: Fasenra

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change in anti-inflammatory reliever inhaler use during last benralizumab dosing cycle	Difference between ICS-SABA uses in the first and last two weeks of the 3rd of 3 benralizumab dosing cycles during the study period.	Weeks 17 through 24

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change in anti-inflammatory reliever inhaler use during all benralizumab dosing cycles	Difference between ICS-SABA uses in the first and last two weeks of all 3 benralizumab dosing cycles during the study period.	Weeks 1 through 24
Number of days per week without anti-inflammatory reliever inhaler use	Number of days with 0 ICS-SABA uses per week in relation to most recent benralizumab administration.	Weeks 1 through 24
Time to severe asthma exacerbation	Time to first severe asthma exacerbation requiring treatment with oral corticosteroids for at least 3 days, urgent care or emergency department visit, hospitalization, or death, in relation to most recent benralizumab administration.	Weeks 1 through 24

Collaborators and Investigators

• Sponsor: Endeavor Health
• Collaborators: AstraZeneca
• Investigators: Principal Investigator: Giselle Mosnaim, MD, MS, Endeavor Health

Study record dates

Study Major Dates

• Study Start (Estimated): July 1, 2026
• Primary Completion (Estimated): September 1, 2027
• Study Completion (Estimated): January 1, 2028

Study Registration Dates

• First Submitted: May 21, 2026
• First Submitted That Met QC Criteria: June 12, 2026
• First Posted (Actual): June 17, 2026

Study Record Updates

• Last Update Posted (Actual): June 17, 2026
• Last Update Submitted That Met QC Criteria: June 12, 2026
• Last Verified: June 1, 2026

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Immune System Diseases; Respiratory Tract Diseases; Lung Diseases; Bronchial Diseases; Lung Diseases, Obstructive; Respiratory Hypersensitivity; Hypersensitivity, Immediate; Hypersensitivity; Hypereosinophilic Syndrome; Eosinophilia; Leukocyte Disorders; Hematologic Diseases; Hemic and Lymphatic Diseases; Asthma; Pulmonary Eosinophilia; benralizumab
• Other Study ID Numbers: P2025-0057; ESR-24-22698 (Other Grant/Funding Number: AstraZeneca)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No