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Showing 1–24 of 49 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Hypereosinophilic Syndromes Clear all
Recruiting Phase 3 Interventional

Depemokimab in Participants With Hypereosinophilic Syndrome, Efficacy, and Safety Trial

NCT05334368
View directory record Official record
Conditions
Hypereosinophilic Syndrome
Interventions
Depemokimab, Placebo
Drug · Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
123 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
11
States / cities
San Diego, California • Atlanta, Georgia • Boston, Massachusetts + 8 more
Source: ClinicalTrials.gov public record
Updated Nov 24, 2025 · Synced Jun 11, 2026, 5:32 AM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate the Efficacy and Safety of Reslizumab in Patients With Eosinophilic Asthma

NCT01285323
View directory record Official record
Conditions
Eosinophilic Asthma
Interventions
Reslizumab, Placebo
Drug
Lead sponsor
Teva Branded Pharmaceutical Products R&D, Inc.
Industry
Eligibility
12 Years to 75 Years
Enrollment
464 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
15
States / cities
Mobile, Alabama • Fresno, California • Long Beach, California + 12 more
Source: ClinicalTrials.gov public record
Updated Nov 8, 2021 · Synced Jun 11, 2026, 5:32 AM EDT
Active, not recruiting Phase 1Phase 2 Interventional

Azacitidine, Venetoclax, and Pevonedistat in Treating Patients With Newly Diagnosed Acute Myeloid Leukemia

NCT03862157
View directory record Official record
Conditions
Acute Myeloid Leukemia, Atypical Chronic Myeloid Leukemia, BCR-ABL1 Negative, Chronic Eosinophilic Leukemia, Not Otherwise Specified, Chronic Myelomonocytic Leukemia, Chronic Neutrophilic Leukemia, Essential Thrombocythemia, Myelodysplastic Syndrome, Myelodysplastic/Myeloproliferative Neoplasm With Ring Sideroblasts and Thrombocytosis, Myelodysplastic/Myeloproliferative Neoplasm, Unclassifiable, Myeloid Neoplasm, Myeloproliferative Neoplasm, Myeloproliferative Neoplasm, Unclassifiable, Overt Primary Myelofibrosis, Polycythemia Vera, Polycythemia Vera, Post-Polycythemic Myelofibrosis Phase, Prefibrotic/Early Primary Myelofibrosis
Interventions
Azacitidine, Pevonedistat, Venetoclax
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Jun 11, 2026, 5:32 AM EDT
Terminated Phase 3 Interventional

A Study to Assess the Effect of Dexpramipexole in Adolescents and Adults With Severe Eosinophilic Asthma.

NCT05763121
View directory record Official record
Conditions
Eosinophilic Asthma, Asthma; Eosinophilic, Asthma
Interventions
Dexpramipexole Dihydrochloride, Placebo
Drug
Lead sponsor
Areteia Therapeutics
Industry
Eligibility
12 Years to 99 Years
Enrollment
1,061 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
89
States / cities
Bakersfield, California • La Palma, California • Newport Beach, California + 73 more
Source: ClinicalTrials.gov public record
Updated Dec 14, 2025 · Synced Jun 11, 2026, 5:32 AM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate the Efficacy and Safety of Reslizumab (3.0 mg/kg) in the Reduction of Clinical Asthma Exacerbations in Patients (12-75 Years of Age) With Eosinophilic Asthma

NCT01287039
View directory record Official record
Conditions
Eosinophilic Asthma
Interventions
Reslizumab, Placebo
Drug
Lead sponsor
Teva Branded Pharmaceutical Products R&D, Inc.
Industry
Eligibility
12 Years to 75 Years
Enrollment
489 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
26
States / cities
Scottsdale, Arizona • Los Angeles, California • Orange, California + 23 more
Source: ClinicalTrials.gov public record
Updated Nov 8, 2021 · Synced Jun 11, 2026, 5:32 AM EDT
Completed Phase 3 Interventional Results available

A Multi-center, Open-label Extension, Safety Study of Mepolizumab in Subjects With Hypereosinophilic Syndrome (HES) From Study 200622

NCT03306043
View directory record Official record
Conditions
Hypereosinophilic Syndrome
Interventions
Mepolizumab
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Years and older
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
6
States / cities
La Jolla, California • New Haven, Connecticut • Rochester, Minnesota + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 22, 2020 · Synced Jun 11, 2026, 5:32 AM EDT
Completed Phase 2 Interventional Results available

GB001 in Adult Subjects With Moderate to Severe Asthma

NCT03683576
View directory record Official record
Conditions
Asthma
Interventions
GB001, Placebo
Drug
Lead sponsor
GB001, Inc, a wholly owned subsidiary of Gossamer Bio, Inc.
Industry
Eligibility
18 Years to 74 Years
Enrollment
481 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
47
States / cities
Birmingham, Alabama • Tucson, Arizona • Los Angeles, California + 41 more
Source: ClinicalTrials.gov public record
Updated Sep 15, 2021 · Synced Jun 11, 2026, 5:32 AM EDT
Terminated Phase 3 Interventional Results available

Open-Label Extension Study to Evaluate the Long-Term Safety and Efficacy of Reslizumab (3.0 mg/kg) as Treatment for Patients (12 Through 75 Years of Age) With Eosinophilic Asthma

NCT01290887
View directory record Official record
Conditions
Eosinophilic Asthma
Interventions
Reslizumab
Drug
Lead sponsor
Teva Branded Pharmaceutical Products R&D, Inc.
Industry
Eligibility
12 Years to 75 Years
Enrollment
1,052 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
48
States / cities
Scottsdale, Arizona • Anaheim, California • Fountain Valley, California + 39 more
Source: ClinicalTrials.gov public record
Updated Jun 5, 2016 · Synced Jun 11, 2026, 5:32 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 Jun 11, 2026, 5:32 AM EDT
Terminated Phase 3 Interventional

Phase III Long-Term Extension Study With Dexpramipexole

NCT06388889
View directory record Official record
Conditions
Eosinophilic Asthma
Interventions
Dexpramipexole Dihydrochloride
Drug
Lead sponsor
Areteia Therapeutics
Industry
Eligibility
18 Years to 99 Years
Enrollment
509 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
23
States / cities
Bakersfield, California • Northridge, California • Coral Gables, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated Dec 14, 2025 · Synced Jun 11, 2026, 5:32 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

A Longitudinal Study of Familial Hypereosinophilia (FE): Natural History and Markers of Disease Progression

NCT00091871
View directory record Official record
Conditions
Eosinophilia, Hypereosinophilic Syndrome
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
1 Year to 100 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2005
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Jun 11, 2026, 5:32 AM EDT
Completed Phase 1Phase 2 Interventional

Anti-Interleukin-5 (IL-5) Study for Hypereosinophilic Syndrome

NCT00266565
View directory record Official record
Conditions
Hypereosinophilic Syndromes, Eosinophilic Gastroenteritis, Churg-Strauss Syndrome, Eosinophilic Esophagitis
Interventions
Mepolizumab
Drug
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2005
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 28, 2020 · Synced Jun 11, 2026, 5:32 AM EDT
Active, not recruiting Phase 4 Interventional

Benralizumab Airway Remodeling Study in Severe Eosinophilic Asthmatics

NCT03953300
View directory record Official record
Conditions
Asthma
Interventions
Benralizumab, Placebo
Biological
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 70 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
19
States / cities
Birmingham, Alabama • Los Angeles, California • Jacksonville, Florida + 16 more
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Jun 11, 2026, 5:32 AM EDT
Completed Phase 4 Interventional Results available

Steroid Treatment for Hypereosinophilic Syndrome

NCT01524536
View directory record Official record
Conditions
Eosinophilia, Hypereosinophilic Syndrome, Leukocyte Disorder, Hematologic Diseases
Interventions
prednisone
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
7 Years to 100 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2020
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 14, 2022 · Synced Jun 11, 2026, 5:32 AM EDT
Completed Phase 4 Interventional Results available

BURAN: Benralizumab on Airway Dynamics in Severe Eosinophilic Asthma Using Functional Respiratory Imaging

NCT05552508
View directory record Official record
Conditions
Asthma
Interventions
Benralizumab
Combination Product
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 70 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
10
States / cities
Walnut Creek, California • Loxahatchee Groves, Florida • Plantation, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated Mar 24, 2025 · Synced Jun 11, 2026, 5:32 AM EDT
Completed Phase 3 Interventional

Intravenous Mepolizumab In Subjects With Hypereosinophilic Syndromes (HES)

NCT00086658
View directory record Official record
Conditions
Hypereosinophilia, Hypereosinophilic Syndrome
Interventions
mepolizumab
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 75 Years
Enrollment
86 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
11
States / cities
San Diego, California • Denver, Colorado • Bethesda, Maryland + 8 more
Source: ClinicalTrials.gov public record
Updated May 4, 2020 · Synced Jun 11, 2026, 5:32 AM EDT
Completed Phase 3 Interventional Results available

Study of Mepolizumab Safety Syringe in Asthmatics

NCT03021304
View directory record Official record
Conditions
Asthma
Interventions
Mepolizumab
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Years and older
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
4
States / cities
Birmingham, Alabama • Los Angeles, California • Cincinnati, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 22, 2019 · Synced Jun 11, 2026, 5:32 AM EDT
Completed Not applicable Interventional Results available

Therapy of HES, PV, Atypical Chronic Myelocytic Leukemia (CML) or Chronic Myelomonocytic Leukemia (CMML), and Mastocytosis With Imatinib Mesylate

NCT00038675
View directory record Official record
Conditions
Chronic Myelomonocytic Leukemia, Chronic Myeloid Leukemia, Polycythemia Vera, Hypereosinophilic Syndrome, Mastocytosis
Interventions
Imatinib Mesylate (Gleevec)
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
Not listed
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2013
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 3, 2022 · Synced Jun 11, 2026, 5:32 AM EDT
Completed Phase 2 Interventional

2-Chlorodeoxyadenosine and Cytarabine in Patients With Idiopathic Hypereosinophilic Syndrome (HES)

NCT00483067
View directory record Official record
Conditions
Leukemia
Interventions
2-CdA, Ara-C, G-CSF (Granulocyte colony-stimulating factor)
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
Up to 76 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2008
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 1, 2012 · Synced Jun 11, 2026, 5:32 AM EDT
Not listed Phase 2Phase 3 Interventional Results available

Study to Evaluate Safety and Efficacy of Benralizumab in Subjects With Hypereosinophilic Syndrome

NCT02130882
View directory record Official record
Conditions
Respiratory System Agents, Anti-Asthmatic Agents, Hematologic Diseases, Leukocyte Disorders, Hypereosinophilia
Interventions
benralizumab, Placebo
Drug · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 75 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2023
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 7, 2022 · Synced Jun 11, 2026, 5:32 AM EDT
Completed Phase 2 Interventional Results available

Pharmacokinetics and Pharmacodynamics of Mepolizumab Administered Subcutaneously in Children

NCT02377427
View directory record Official record
Conditions
Asthma
Interventions
Mepolizumab
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
6 Years to 11 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
4
States / cities
San Diego, California • Oklahoma City, Oklahoma • Medford, Oregon + 1 more
Source: ClinicalTrials.gov public record
Updated Dec 2, 2019 · Synced Jun 11, 2026, 5:32 AM EDT
Active, not recruiting Phase 3 Interventional

A Study to Assess the Effect of Dexpramipexole in Adolescents and Adults With Eosinophilic Asthma

NCT05748600
View directory record Official record
Conditions
Eosinophilic Asthma, Asthma; Eosinophilic, Asthma Attack
Interventions
Dexpramipexole Dihydrochloride, Placebo
Drug
Lead sponsor
Areteia Therapeutics
Industry
Eligibility
12 Years to 99 Years
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
146
States / cities
Chandler, Arizona • Peoria, Arizona • Surprise, Arizona + 123 more
Source: ClinicalTrials.gov public record
Updated Sep 4, 2025 · Synced Jun 11, 2026, 5:32 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 Jun 11, 2026, 5:32 AM EDT
Recruiting Phase 2 Interventional

Ruxolitinib in Treating Patients With Hypereosinophilic Syndrome or Primary Eosinophilic Disorders

NCT03801434
View directory record Official record
Conditions
BCR-JAK2 Fusion Protein Expression, Blasts 20 Percent or Less of Peripheral Blood White Cells, Blasts More Than 5 Percent of Bone Marrow Nucleated Cells, Blasts More Than 5 Percent of Peripheral Blood White Cells, Blasts Under 20 Percent of Bone Marrow Nucleated Cells, Chronic Eosinophilic Leukemia, Not Otherwise Specified, Eosinophilia, Hepatomegaly, Hypereosinophilic Syndrome, JAK2 Gene Mutation, Splenomegaly, TEL-JAK2 Fusion Protein Expression
Interventions
Ruxolitinib
Drug
Lead sponsor
William Shomali
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2028
U.S. locations
4
States / cities
Palo Alto, California • Portland, Oregon • Salt Lake City, Utah + 1 more
Source: ClinicalTrials.gov public record
Updated Dec 22, 2025 · Synced Jun 11, 2026, 5:32 AM EDT