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Showing 25–43 of 19 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Mepolizumab Clear all
Completed Phase 1Phase 2 Interventional Results available

Mepolizumab As a Steroid-sparing Treatment Option in the Churg Strauss Syndrome

NCT00527566
View directory record Official record
Conditions
Churg Strauss Syndrome
Interventions
Mepolizumab
Biological
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
19 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 21, 2017 · Synced Sep 28, 2026, 7:31 AM EDT
Completed Phase 3 Interventional Results available

MEA112997 Open-label Long Term Extension Safety Study of Mepolizumab in Asthmatic Subjects

NCT01691859
View directory record Official record
Conditions
Asthma
Interventions
Mepolizumab
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
347 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
11
States / cities
Long Beach, California • Riverside, California • Denver, Colorado + 8 more
Source: ClinicalTrials.gov public record
Updated Jun 27, 2023 · Synced Sep 28, 2026, 7:31 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety Study of Mepolizumab Adjunctive Therapy in Subjects With Severe Uncontrolled Refractory Asthma

NCT01691521
View directory record Official record
Conditions
Asthma
Interventions
Mepolizumab IV, Mepolizumab SC, IV Placebo, SC Placebo
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Years and older
Enrollment
580 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
21
States / cities
Birmingham, Alabama • Newport Beach, California • Riverside, California + 17 more
Source: ClinicalTrials.gov public record
Updated Aug 5, 2018 · Synced Sep 28, 2026, 7:31 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety Study of Mepolizumab in Subjects With Severe Hypereosinophilic Syndrome (HES)

NCT02836496
View directory record Official record
Conditions
Hypereosinophilic Syndrome
Interventions
Mepolizumab 300 mg, Placebo matching mepolizumab, Active OCS capsules (5 mg prednisolone or prednisone), Placebo matching OCS capsules
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Years and older
Enrollment
108 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
7
States / cities
San Diego, California • New Haven, Connecticut • Rochester, Minnesota + 4 more
Source: ClinicalTrials.gov public record
Updated Feb 20, 2020 · Synced Sep 28, 2026, 7:31 AM EDT
Active, not recruiting Phase 4 Interventional

REIMAGINE - Real World EvaluatIon of Mepolizumab in Severe Asthma achievinG on Treatment clinIcal remissioN, a prospEctive Study

NCT06041386
View directory record Official record
Conditions
Asthma
Interventions
Mepolizumab, Spirometry
Drug · Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
336 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
28
States / cities
La Jolla, California • Newport Beach, California • Aurora, Colorado + 24 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2025 · Synced Sep 28, 2026, 7:31 AM EDT
Completed Phase 3 Interventional Results available

A Study of GSK3511294 (Depemokimab) Compared With Mepolizumab or Benralizumab in Participants With Severe Asthma With an Eosinophilic Phenotype

NCT04718389
View directory record Official record
Conditions
Asthma
Interventions
GSK3511294 (Depemokimab), Mepolizumab, Benralizumab, Placebo, Standard of care (SoC), Pre-filled Syringes (PFS)
Biological · Drug · Device
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Years and older
Enrollment
1,717 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
119
States / cities
Birmingham, Alabama • Scottsboro, Alabama • Litchfield Park, Arizona + 94 more
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced Sep 28, 2026, 7:31 AM EDT
Completed Phase 3 Interventional Results available

Cessation Versus Continuation of Long-term Mepolizumab in Severe Eosinophilic Asthma Patients

NCT02555371
View directory record Official record
Conditions
Asthma
Interventions
Mepolizumab 100mg, Placebo
Biological · Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Years and older
Enrollment
306 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
13
States / cities
Long Beach, California • Riverside, California • Denver, Colorado + 10 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2020 · Synced Sep 28, 2026, 7:31 AM EDT
Completed Phase 3 Interventional

Cross-sectional Study for Identification and Description of Severe Asthma Patients

NCT02293265
View directory record Official record
Conditions
Asthma
Interventions
Short Acting Beta Agonist (SABA)
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Years and older
Enrollment
767 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
21
States / cities
Little Rock, Arkansas • Fresno, California • Los Angeles, California + 18 more
Source: ClinicalTrials.gov public record
Updated Apr 3, 2016 · Synced Sep 28, 2026, 7:31 AM EDT
Terminated Phase 2 Interventional Results available

Mepolizumab in Episodic Angioedema With Eosinophilia

NCT04128371
View directory record Official record
Conditions
Eosinophilia, Angioedema
Interventions
mepolizumab
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 15, 2024 · Synced Sep 28, 2026, 7:31 AM EDT
Completed Phase 3 Interventional Results available

Mepolizumab as Add-on Treatment IN Participants With COPD Characterized by Frequent Exacerbations and Eosinophil Level

NCT04133909
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive
Interventions
Mepolizumab, Placebo
Biological · Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
40 Years and older
Enrollment
806 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
88
States / cities
Birmingham, Alabama • Dothan, Alabama • Huntsville, Alabama + 72 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 28, 2026, 7:31 AM EDT
Completed Phase 3 Interventional Results available

A Phase 3a, Repeat Dose, Open-label, Long-term Safety Study of Mepolizumab in Asthmatic Subjects

NCT02135692
View directory record Official record
Conditions
Asthma
Interventions
Mepolizumab, SOC
Biological · Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Years and older
Enrollment
339 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
16
States / cities
Newport Beach, California • Riverside, California • Rolling Hills Estates, California + 13 more
Source: ClinicalTrials.gov public record
Updated Dec 2, 2019 · Synced Sep 28, 2026, 7:31 AM EDT
Completed Phase 3 Interventional Results available

Study in Pediatrics With HypEREosinophilic Syndrome (SPHERE)

NCT04965636
View directory record Official record
Conditions
Hypereosinophilic Syndrome
Interventions
Mepolizumab
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
6 Years to 17 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
4
States / cities
Rochester, Minnesota • Cincinnati, Ohio • Cleveland, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Sep 28, 2026, 7:31 AM EDT
Completed Phase 2 Interventional Results available

Mepo for Eosinophilic Esophagitis (EoE) Study

NCT03656380
View directory record Official record
Conditions
EoE, Eosinophilic Esophagitis
Interventions
Mepolizumab 300 mg, Mepolizumab 100 mg, Placebo
Drug · Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
16 Years to 75 Years
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
4
States / cities
Chicago, Illinois • Minneapolis, Minnesota • Chapel Hill, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 22, 2023 · Synced Sep 28, 2026, 7:31 AM EDT
Completed No phase listed Observational Results available

Changes in Gene Transcription and Immunophenotypes Following Mepolizumab Treatment for Asthma

NCT05002621
View directory record Official record
Conditions
Eosinophilic Asthma
Interventions
Observational
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 17, 2026 · Synced Sep 28, 2026, 7:31 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety Study of Mepolizumab Adjunctive Therapy in Participants With Severe Eosinophilic Asthma on Markers of Asthma Control

NCT02281318
View directory record Official record
Conditions
Asthma
Interventions
Mepolizumab, Placebo, SOC
Biological · Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Years and older
Enrollment
556 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
24
States / cities
Birmingham, Alabama • Fresno, California • Long Beach, California + 20 more
Source: ClinicalTrials.gov public record
Updated Aug 5, 2018 · Synced Sep 28, 2026, 7:31 AM EDT
Completed Early Phase 1 Interventional Results available

Mepolizumab for the Treatment of Chronic Spontaneous Urticaria

NCT03494881
View directory record Official record
Conditions
Chronic Spontaneous Urticaria
Interventions
Nucala
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 26, 2025 · Synced Sep 28, 2026, 7:31 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Mepolizumab as an Add-on Treatment in Chronic Obstructive Pulmonary Disease (COPD)

NCT02105961
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive
Interventions
Mepolizumab, Placebo
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
40 Years and older
Enrollment
674 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
35
States / cities
Birmingham, Alabama • Mobile, Alabama • Riverside, California + 31 more
Source: ClinicalTrials.gov public record
Updated Aug 15, 2018 · Synced Sep 28, 2026, 7:31 AM EDT
Completed Early Phase 1 Interventional

The Role of IL5 in Epithelial Cell Integrity

NCT05895929
View directory record Official record
Conditions
Chronic Rhinosinusitis With Nasal Polyps, Chronic Rhinosinusitis (Diagnosis)
Interventions
Mepolizumab
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 100 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
2
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Sep 28, 2026, 7:31 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Pharmacodynamic Biomarkers to Support Biosimilar Development: Interleukin-5 Antagonists

NCT04183192
View directory record Official record
Conditions
Healthy Subjects, Pharmacokinetics, Pharmacodynamics
Interventions
Mepolizumab, Reslizumab, Placebo
Biological
Lead sponsor
Food and Drug Administration (FDA)
Federal
Eligibility
18 Years to 55 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
West Bend, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 21, 2024 · Synced Sep 28, 2026, 7:31 AM EDT