Effectiveness and Safety Study of Tezepelumab in Adults & Adolescent Participants With Severe Asthma in the United States (PASSAGE)

July 15, 2026 updated by: AstraZeneca

A Multicenter, Single-arm, Open-label, Post-Authorization, Phase 4 Effectiveness and Safety Study of Tezepelumab in Adult and Adolescent Participants With Severe Asthma Including Several Under-Studied Populations in the United States (PASSAGE)

To asses effectiveness and safety of tezepelumab in adult and adolescent participants with severe asthma including several under-studied populations in the United States.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

This is a multicenter, single-arm, open-label, Post-authorization, Phase 4 study to assess the effectiveness of tezepelumab in the United States (US) among a real-world population of adults and adolescent participants with asthma requiring medium-dose to high-dose inhaled corticosteroids (ICS), with additional controller(s) for at least 12 months with documented history of at least 2 asthma exacerbations during the year prior to enrolment. The total duration of the study for each participant will be approximately 56 weeks. Approximately 400 participants will be enrolled. Participants will receive tezepelumab via subcutaneous injection at the study site, over a 48-week treatment period. The study also includes a post-dosing follow-up period from Weeks 48 to 52.

Study Type

Interventional

Enrollment (Actual)

286

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • Alabama
      • Mobile, Alabama, United States, 36608
        • Research Site
    • Arizona
      • Gilbert, Arizona, United States, 85234
        • Research Site
    • California
      • Long Beach, California, United States, 90815
        • Research Site
      • Los Angeles, California, United States, 90017
        • Research Site
      • Rancho Mirage, California, United States, 92270
        • Research Site
      • Westminster, California, United States, 92683
        • Research Site
    • Colorado
      • Colorado Springs, Colorado, United States, 80907
        • Research Site
    • Connecticut
      • New Haven, Connecticut, United States, 06510
        • Research Site
    • District of Columbia
      • Washington D.C., District of Columbia, United States, 20037
        • Research Site
    • Illinois
      • Chicago, Illinois, United States, 60611
        • Research Site
    • Kentucky
      • Lexington, Kentucky, United States, 40509
        • Research Site
    • Louisiana
      • New Orleans, Louisiana, United States, 70112
        • Research Site
    • Maryland
      • Upper Marlboro, Maryland, United States, 20772
        • Research Site
    • Michigan
      • Ann Arbor, Michigan, United States, 48109
        • Research Site
      • Ypsilanti, Michigan, United States, 48197
        • Research Site
    • Minnesota
      • Saint Paul, Minnesota, United States, 55109
        • Research Site
    • Missouri
      • St Louis, Missouri, United States, 63110
        • Research Site
    • Nebraska
      • Lincoln, Nebraska, United States, 68505
        • Research Site
      • Omaha, Nebraska, United States, 68114
        • Research Site
    • New York
      • Hollis, New York, United States, 11423
        • Research Site
      • Horseheads, New York, United States, 14845
        • Research Site
      • Rochester, New York, United States, 14642
        • Research Site
      • Valhalla, New York, United States, 10595
        • Research Site
    • North Carolina
      • Chapel Hill, North Carolina, United States, 27514
        • Research Site
      • Wilmington, North Carolina, United States, 28401
        • Research Site
    • Ohio
      • Toledo, Ohio, United States, 43617
        • Research Site
    • Oklahoma
      • Oklahoma City, Oklahoma, United States, 73120
        • Research Site
    • Pennsylvania
      • Altoona, Pennsylvania, United States, 16602
        • Research Site
      • Philadelphia, Pennsylvania, United States, 19140
        • Research Site
    • Rhode Island
      • Warwick, Rhode Island, United States, 02886
        • Research Site
    • South Carolina
      • Greenville, South Carolina, United States, 29607
        • Research Site
    • Tennessee
      • Hendersonville, Tennessee, United States, 37075
        • Research Site
    • Texas
      • Fort Worth, Texas, United States, 76104
        • Research Site
      • McKinney, Texas, United States, 75069
        • Research Site
      • San Antonio, Texas, United States, 78229
        • Research Site
    • Virginia
      • Charlottesville, Virginia, United States, 22903
        • Research Site
    • Washington
      • Vancouver, Washington, United States, 98664
        • Research Site

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

12 years to 130 years (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Male or female participant must be 12 years of age or older, at the time of signing the informed consent form or assent.
  • Documented physician-diagnosed asthma for at least 12 months prior to enrollment and confirmed by the Investigator not to be due to alternative diagnoses.
  • Documented treatment with medium- to high dose ICS as per Global Initiative for Asthma (GINA) guidelines (GINA 2021) for at least 12 months prior to enrollment.
  • Use of additional asthma maintenance controller medication(s) in addition to ICS for at least 12 months prior to enrollment. The additional maintenance controller medication may be contained in a combination product (eg, ICS/ long-acting β-agonist (LABA)).
  • Documented history of at least 2 asthma exacerbations during the 12 months prior to enrollment.
  • Physician decision that participant is eligible for treatment with tezepelumab according to the approved United States product insert (USPI).
  • Currently receiving care from specialist physicians (eg, pulmonologists and/or allergists).
  • Provision of signed and dated written informed consent form.

Exclusion Criteria:

  • Any contraindication to tezepelumab as per the US approved product label or in the opinion of the Investigator.
  • Comorbid diagnosis of severe or very severe chronic obstructive pulmonary disease (COPD) per GOLD guidelines (GOLD 2021).
  • Use of biologics that are approved for the treatment of asthma within 4 months or 5 half- lives (whichever is longer) prior to enrollment.
  • Participation in an interventional clinical trial for asthma within 12 months prior to enrollment.
  • Judgment by the Investigator that the participant is unlikely to comply with study procedures, restrictions, and requirements.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

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

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Tezepelumab
Participants will be receiving 210 mg of tezepelumab every 4 weeks (Q4W) from Week 0 until Week 48.
Participants will be receiving subcutaneous injection of tezepelumab.
Other Names:
  • AMG 157 or MEDI9929

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Annualized Asthma Exacerbation Rate (AAER)
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)

Asthma exacerbations were defined by worsening of asthma symptoms that leads to temporary bolus/burst of systemic corticosteroids for at least 3 consecutive days, or an emergency department (ED) or urgent care visit due to asthma that required systemic corticosteroid (SCS), and/or inpatient hospitalization (≥24 hours) due to asthma. The AAER was based on exacerbations reported by the investigator over 52 weeks.

The exacerbation rate was compared between the 12-month period before [baseline period (BP)] and the 12-month period after initiation of tezepelumab [up to study Week 52 (Visit 15) = study period (SP)].

Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Number of Participants With Asthma Exacerbations
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
The number of participants with at least one asthma exacerbation in the 12-month period before (baseline period) and after initiation of tezepelumab (study period) (up to study Week 52 = study period) were assessed.
Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Number of Participants Who Completed the 52 -Week Study Period With Any Reduction in Total Number of Asthma Exacerbations
Time Frame: From Baseline period (Week -52 to Week 0) to Study period (Week 0 to Week 52)
The number of participants who completed the 52 -week study period following tezepelumab initiation with at least 50% reduction, and 100% reduction in total number of asthma exacerbations were assessed.
From Baseline period (Week -52 to Week 0) to Study period (Week 0 to Week 52)
Cumulative Asthma Exacerbation Days
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
The cumulative asthma exacerbation days over 52 weeks before (baseline period) and after initiation of tezepelumab (study period) was assessed.
Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Time to First Asthma Exacerbation
Time Frame: Baseline (Week 0) to Week 24 (Visit 8 = 6 months) and Week 52 (Visit 15 = 12 months)
The time to first exacerbation after initiation of tezepelumab was assessed. Data for median time to event have been presented for this endpoint. The median is the descriptive statistics median calculated using a subset of Participants with an event.
Baseline (Week 0) to Week 24 (Visit 8 = 6 months) and Week 52 (Visit 15 = 12 months)
Rate of Asthma Exacerbations Associated With Hospitalizations
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
The rate of asthma exacerbations associated with hospitalization over 52 weeks before (baseline period) and after initiation of tezepelumab (study period) was assessed.
Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Rate of Asthma Exacerbations Associated With Emergency Department /Urgent Care (ED/UC) Visits
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
The rate of asthma exacerbations associated with ED/UC visits over 52 weeks before (baseline period) and after initiation of tezepelumab (study period) was assessed.
Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Rate of Asthma Exacerbations Associated With Hospitalizations or ED/UC Visits
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
The rate of asthma exacerbations associated with hospitalizations or ED/UC visits over 52 weeks before (baseline period) and after initiation of tezepelumab (study period) was assessed.
Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Number of Participants With Asthma Exacerbations Associated With Hospitalizations or ED/UC Visits
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
The number of participants with asthma exacerbations associated with hospitalizations or ED/UC visits in in the 12-month periods before (baseline period) and after initiation of tezepelumab (study period) (up to study Week 52 = study period) were assessed.
Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Cumulative Asthma Exacerbation Days Associated With Hospitalizations or ED/UC Visits
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)

The cumulative asthma exacerbation days associated with hospitalizations or ED/UC over 52 weeks before (baseline period) and after initiation of tezepelumab (study period) were assessed.

Total days of exacerbations resulting in hospitalizations or ED/UC visits have been presented.

Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Pre-bronchodilator (Pre-BD) Forced Expiratory Volume in 1 Second (FEV1)
Time Frame: Baseline (Week 0), Week 24 (Visit 8 = 6 months), Week 52 (Visit 15 = 12 months)
Lung function (FEV1) was measured pre-bronchodilator (pre-BD) by spirometry test. FEV1 is defined as the volume of air exhaled from the lungs in the first second of a forced expiration.
Baseline (Week 0), Week 24 (Visit 8 = 6 months), Week 52 (Visit 15 = 12 months)
Change From Baseline in Pre-bronchodilator FEV1
Time Frame: Baseline (Week 0) to Week 24 (Visit 8 = 6 months) and Week 52 (Visit 15 = 12 months)
Change from baseline in pre-bronchodilator FEV1 was assessed after initiation of tezepelumab. FEV1 is defined as the volume of air exhaled from the lungs in the first second of a forced expiration.
Baseline (Week 0) to Week 24 (Visit 8 = 6 months) and Week 52 (Visit 15 = 12 months)
Number of Pre-BD FEV1 Responders
Time Frame: Week 24 (Visit 8 = 6 months), Week 52 (Visit 15 = 12 months)
Number of pre-BD FEV1 responders was defined as participants who achieved either at least 5% or 100 mL improvement from baseline.
Week 24 (Visit 8 = 6 months), Week 52 (Visit 15 = 12 months)
Asthma Control Questionnaire (ACQ-6)
Time Frame: Baseline (Week 0), Week 24 (Visit 8 = 6 months), Week 52 (Visit 15 = 12 months)
The Asthma Control Questionnaire-6 (ACQ-6) is a shortened version of the ACQ that assesses the adequacy of asthma control and change in asthma control which occurs spontaneously or as a result of treatment. ACQ assesses symptoms and rescue bronchodilator use. Questions are weighted equally and scored from 0 (totally controlled) to 6 (severely uncontrolled), with higher scores indicating worse asthma control. The mean (average) ACQ-6 score is the mean of the responses.
Baseline (Week 0), Week 24 (Visit 8 = 6 months), Week 52 (Visit 15 = 12 months)
Asthma Impairment and Risk Questionnaire (AIRQ)
Time Frame: Baseline (Week 0), Week 24 (Visit 8 = 6 months), Week 52 (Visit 15 = 12 months)
The Asthma Impairment and Risk Questionnaire (AIRQ) is a Patient Reported Outcome (PRO) tool intended to identify participants 12 years and older whose health may be at risk because of uncontrolled asthma. It has 10 questions that ask about respiratory symptoms, activity limitation, sleep, rescue medication use, social activities, exercise, difficulty controlling asthma, and exacerbations. All items have a yes/no response option and the tool is scored by summing the total number of 'yes' responses. This sum score is used to assess level of asthma control, ranging from 0 to 10, with higher scores indicating worse asthma control, where: 0-1 is well controlled, 2-4 is not well controlled, and 5-10 is very poorly controlled.
Baseline (Week 0), Week 24 (Visit 8 = 6 months), Week 52 (Visit 15 = 12 months)
St. George's Respiratory Questionnaire (SGRQ)
Time Frame: Baseline (Week 0), Week 24 (Visit 8 = 6 months), Week 52 (Visit 15 = 12 months)
St. George's Respiratory Questionnaire (SGRQ) is a 50-item Patient Reported Outcome (PRO) instrument used to measure health status of participants with airway obstruction diseases. Questionnaire has 2 parts: part 1 consists of 8 items pertaining to severity of respiratory symptoms in preceding 4 weeks; part 2 consists of 42 items related to daily activity and psychosocial impacts of individual's respiratory condition. SGRQ yields a total score and 3 components scores (symptoms, activity, and impacts). Total score indicates impact of disease on overall health status, and it is expressed as percentage of overall impairment, in which 100 represents worst possible health status and 0 indicates best possible health status. Likewise, domain scores range from 0 to 100, with higher scores indicative of greater impairment.
Baseline (Week 0), Week 24 (Visit 8 = 6 months), Week 52 (Visit 15 = 12 months)
Change From Baseline in ACQ-6 Score
Time Frame: Baseline (Week 0) to Week 24 (Visit 8 = 6 months) and Week 52 (Visit 15 = 12 months)

Change from baseline in Asthma Control Questionnaire-6 (ACQ-6) score was assessed.

The ACQ-6 is a shortened version of the ACQ that assesses the adequacy of asthma control and change in asthma control which occurs spontaneously or as a result of treatment. ACQ assesses symptoms and rescue bronchodilator use. Questions are weighted equally and scored from 0 (totally controlled) to 6 (severely uncontrolled), with higher scores indicating worse asthma control.

Baseline (Week 0) to Week 24 (Visit 8 = 6 months) and Week 52 (Visit 15 = 12 months)
Change From Baseline in AIRQ Score
Time Frame: Baseline (Week 0) to Week 24 (Visit 8 = 6 months) and Week 52 (Visit 15 = 12 months)
Change from baseline in Asthma Impairment and Risk Questionnaire (AIRQ) score was assessed. AIRQ is a Patient Reported Outcome (PRO) tool intended to identify participants 12 years and older whose health may be at risk because of uncontrolled asthma. It has 10 questions that ask about respiratory symptoms, activity limitation, sleep, rescue medication use, social activities, exercise, difficulty controlling asthma, and exacerbations. All items have a yes/no response option and the tool is scored by summing the total number of 'yes' responses. This sum score is used to assess level of asthma control, ranging from 0 to 10, with higher scores indicating worse asthma control, where: 0-1 is well controlled, 2-4 is not well controlled, and 5-10 is very poorly controlled.
Baseline (Week 0) to Week 24 (Visit 8 = 6 months) and Week 52 (Visit 15 = 12 months)
Change From Baseline in SGRQ Score
Time Frame: Baseline (Week 0) to Week 24 (Visit 8 = 6 months) and Week 52 (Visit 15 = 12 months)
Change from baseline in St. George's Respiratory Questionnaire (SGRQ) score was assessed. SGRQ is a 50-item Patient Reported Outcome (PRO) instrument used to measure health status of participants with airway obstruction diseases. Questionnaire has 2 parts: part 1 consists of 8 items pertaining to severity of respiratory symptoms in preceding 4 weeks; part 2 consists of 42 items related to daily activity and psychosocial impacts of individual's respiratory condition. SGRQ yields a total score and 3 components scores (symptoms, activity, and impacts). Total score indicates impact of disease on overall health status, and it is expressed as percentage of overall impairment, in which 100 represents worst possible health status and 0 indicates best possible health status. Likewise, domain scores range from 0 to 100, with higher scores indicative of greater impairment.
Baseline (Week 0) to Week 24 (Visit 8 = 6 months) and Week 52 (Visit 15 = 12 months)
Number of ACQ-6 Responders
Time Frame: Week 24 (Visit 8 = 6 months), Week 52 (Visit 15 = 12 months)
Number of ACQ-6 responders were assessed. Individual changes from baseline of ≥ 0.5 were considered to be clinically meaningful (minimum clinically important difference [MCID]). ACQ-6 responders in this study were defined as participants who achieved ≥ 1 MCID.
Week 24 (Visit 8 = 6 months), Week 52 (Visit 15 = 12 months)
Number of AIRQ Responders
Time Frame: Week 24 (Visit 8 = 6 months), Week 52 (Visit 15 = 12 months)
Number of AIRQ responders were assessed. Individual changes from baseline of ≥ 2 were considered to be clinically meaningful (MCID). AIRQ responders in this study were defined as participants who achieved ≥ 1 MCID.
Week 24 (Visit 8 = 6 months), Week 52 (Visit 15 = 12 months)
Number of SGRQ Responders
Time Frame: Week 24 (Visit 8 = 6 months), Week 52 (Visit 15 = 12 months)
Number of SGRQ responders were assessed. Individual changes from baseline of ≥ 4 were considered to be clinically meaningful (MCID). SGRQ (total and component score) responders in this study were defined as participants who achieved ≥ 1 MCID.
Week 24 (Visit 8 = 6 months), Week 52 (Visit 15 = 12 months)
Number of Participants Who Require Any Systemic Corticosteroid (SCS) Use
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Number of participants who require any SCS use in the 12-month periods before (baseline period) and after initiation of tezepelumab (up to study Week 52 = study period) were assessed.
Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Cumulative Annualized SCS Dose
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)

Cumulative annualized SCS dose in the 12-month periods before (baseline period) and after initiation of tezepelumab (up to study Week 52 = study period) were assessed. Cumulative annualized SCS dose for each participant was calculated as followed:

Cumulative annualized SCS dose = [sum of (cumulative SCS dose)/length of the planned treatment period]*365.25

Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Number of Participants Who Require Longer-term (>30 Consecutive Days) SCS Use
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Number of participants who require longer-term (>30 consecutive days) SCS use in the 12-month periods before (baseline period) and after initiation of tezepelumab (up to study Week 52 = study period) were assessed.
Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Number and Type of Asthma-related Healthcare Resource Utilization (HRU)
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Number of participants with specific type of asthma-related HRU in the 12-month period before (baseline period) and after initiation of tezepelumab (up to study Week 52 = study period) were assessed.
Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Duration of Asthma-related Hospitalizations
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Duration of asthma-related hospitalization in the 12-month period before (baseline period) and after initiation of tezepelumab (up to study Week 52 = study period) was assessed.
Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
AAER for Asthma Exacerbations (Subgroups of Participants)
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
AAER based on asthma exacerbations in the 12-month period before [baseline period (BP)] and after initiation of tezepelumab [up to study Week 52 = study period (SP)] was assessed in following subgroups of participants: Blood eosinophil count (BEC) ≥300 cells/microliter; BEC <300 cells/microliter; With clinically-relevant allergy to perennial aeroallergen; Without clinically-relevant allergy to a perennial aeroallergen; Participants who identify as Black/African American; Adolescents (12-17 years); Comorbid diagnosis of mild to moderate chronic obstructive pulmonary disease (COPD); Significant smoking history (≥10 pack-years of smoking).
Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Number of Participants With Asthma Exacerbations (Subgroups of Participants)
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
The number of participants with at least one asthma exacerbations in the 12-month period before [baseline period (BP)] and after initiation of tezepelumab [up to study Week 52 = study period (SP)] were assessed in the following subgroups of participants: BEC ≥300 cells/microliter; BEC <300 cells/microliter; With a clinically-relevant allergy to a perennial aeroallergen; Without a clinically-relevant allergy to a perennial aeroallergen; Participants who identify as Black/African American; Adolescents (12-17 years); Comorbid diagnosis of mild to moderate COPD; Significant smoking history (≥10 pack-years of smoking).
Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Number of Participants Who Completed the 52-week Study With Any Reduction in Total Number of Asthma Exacerbations (Subgroups of Participants)
Time Frame: From Baseline period (Week -52 to Week 0) to Study period (Week 0 to Week 52)
The number of participants who completed the 52-week study period following tezepelumab initiation with at least 50% reduction, and 100% reduction in total number of asthma exacerbations were assessed in the following subgroups of participants: BEC ≥300 cells/microliter; BEC <300 cells/microliter; With a clinically-relevant allergy to a perennial aeroallergen; Without a clinically-relevant allergy to a perennial aeroallergen; Participants who identify as Black/African American; Adolescents (12-17 years); Comorbid diagnosis of mild to moderate COPD; Significant smoking history (≥10 pack-years of smoking).
From Baseline period (Week -52 to Week 0) to Study period (Week 0 to Week 52)
Cumulative Asthma Exacerbation Days (Subgroups of Participants)
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
The cumulative asthma exacerbation days over 52 weeks before [baseline period (BP)] and after initiation of tezepelumab [study period (SP)] were assessed in the following subgroups of participants: BEC ≥300 cells/microliter; BEC <300 cells/microliter; With a clinically-relevant allergy to a perennial aeroallergen; Without a clinically-relevant allergy to a perennial aeroallergen; Participants who identify as Black/African American; Adolescents (12-17 years); Comorbid diagnosis of mild to moderate COPD; Significant smoking history (≥10 pack-years of smoking).
Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Rate of Asthma Exacerbations Associated With Hospitalizations (Subgroups of Participants)
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Rate of asthma exacerbations associated with hospitalization over 52 weeks before [baseline period (BP)] and after initiation of tezepelumab [study period (SP)] was assessed in the following subgroups of participants: BEC ≥300 cells/µL; BEC <300 cells/µL; With a clinically-relevant allergy to perennial aeroallergen; Without a clinically-relevant allergy to perennial aeroallergen; Participants who identify as Black/African American; Adolescents (12-17 years); Comorbid diagnosis of mild to moderate COPD; Significant smoking history (≥10 pack-years of smoking).
Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Rate of Asthma Exacerbations Associated With Emergency Department/Urgent Care (ED/UC) Visits (Subgroups of Participants)
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Rate of asthma exacerbations associated with ED/UC visits over 52 weeks before [baseline period (BP)] and after initiation of tezepelumab [study period (SP)] was assessed in following subgroups of participants: BEC ≥300 cells/µL; BEC <300 cells/µL; With a clinically-relevant allergy to perennial aeroallergen; Without a clinically-relevant allergy to perennial aeroallergen; Participants who identify as Black/African American; Adolescents (12-17 years); Comorbid diagnosis of mild to moderate COPD; Significant smoking history (≥10 pack-years of smoking).
Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Rate of Asthma Exacerbations Associated With Hospitalizations or ED/UC Visits (Subgroups of Participants)
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Rate of asthma exacerbations associated with hospitalizations or ED/UC visits over 52 weeks before [baseline period (BP)] and after initiation of tezepelumab [study period (SP)] was assessed in following subgroups of participants: BEC ≥300 cells/µL; BEC <300 cells/µL; With clinically-relevant allergy to perennial aeroallergen; Without clinically-relevant allergy to perennial aeroallergen; Participants who identify as Black/African American; Adolescents (12-17 years); Comorbid diagnosis of mild to moderate COPD; Significant smoking history (≥10 pack-years of smoking).
Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Number and Type of Asthma-related HRU (Subgroups of Participants)
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)

Number of participants with specific type of asthma related HRU in the 12-month period before [baseline period (BP)] and after initiation of tezepelumab [up to study Week 52 = study period (SP)] were assessed in the following subgroups of participants: BEC ≥300 cells/microliter; BEC <300 cells/microliter; With a clinically-relevant allergy to a perennial aeroallergen; Without a clinically-relevant allergy to a perennial aeroallergen; Participants who identify as Black/African American; Adolescents (12-17 years); Comorbid diagnosis of mild to moderate COPD; Significant smoking history (≥10 pack-years of smoking).

FEIA = Fluorescent enzyme immunoassay

Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Duration of Asthma-related Hospitalizations (Subgroups of Participants)
Time Frame: Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)
Duration of asthma-related hospitalization in 12-month period before [baseline period (BP)] and after initiation of tezepelumab [up to study Week 52 = study period (SP)] was assessed in following subgroups of participants: BEC≥300 cells/µL; BEC<300 cells/µL; With clinically-relevant allergy to perennial aeroallergen; Without clinically-relevant allergy to perennial aeroallergen; Participants who identify as Black/African American; Adolescents (12-17 years); Comorbid diagnosis of mild to moderate COPD; Significant smoking history (≥10 pack-years of smoking).
Baseline period (Week -52 to Week 0), Study period (Week 0 to Week 52)

Other Outcome Measures

Outcome Measure
Measure Description
Time Frame
Number of Participants With Serious Adverse Events (SAEs), Adverse Events That Lead to Tezepelumab Treatment Discontinuation (DAEs), and Adverse Events of Special Interest (AESIs)
Time Frame: Up to Week 52
The safety and tolerability of tezepelumab were assessed. Data for adverse events on-treatment period have been presented.
Up to Week 52

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Collaborators

Investigators

  • Principal Investigator: Njira Lugogo., MD., University of Michigan Health. Michigan, USA

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

April 29, 2022

Primary Completion (Actual)

October 1, 2025

Study Completion (Actual)

October 1, 2025

Study Registration Dates

First Submitted

March 17, 2022

First Submitted That Met QC Criteria

April 7, 2022

First Posted (Actual)

April 14, 2022

Study Record Updates

Last Update Posted (Actual)

July 16, 2026

Last Update Submitted That Met QC Criteria

July 15, 2026

Last Verified

July 1, 2026

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal. All requests will be evaluated as per the AZ disclosure commitment:

https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure. Yes, indicates that AZ are accepting requests for IPD, but this does not mean all requests will be shared.

IPD Sharing Time Frame

AstraZeneca will meet or exceed data availability as per the commitments made to the EFPIA Pharma Data Sharing Principles. For details of our timelines, please rerefer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

IPD Sharing Access Criteria

When a request has been approved AstraZeneca will provide access to the de-identified individual patient-level data in an approved sponsored tool. Signed Data Sharing Agreement (non-negotiable contract for data accessors) must be in place before accessing requested information. Additionally, all users will need to accept the terms and conditions of the SAS MSE to gain access. For additional details, please review the Disclosure Statements at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP

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

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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