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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Hypereosinophilic Syndromes Clear all
Not yet recruiting Phase 1 Interventional Accepts healthy volunteers

Nasal Inflammation Following Endotoxin Challenge in Patients With Asthma

NCT06270576
View directory record Official record
Conditions
Asthma; Eosinophilic, Asthma
Interventions
Lipopolysaccharides
Drug
Lead sponsor
National Jewish Health
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 20, 2024 · Synced Jun 10, 2026, 9:33 PM 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 Jun 10, 2026, 9:33 PM EDT
Completed No phase listed Observational

TrinetX Study of Hypereosinophilic Syndrome (HES) Without an Identifiable Non-haematological Secondary Cause

NCT06172751
View directory record Official record
Conditions
Hypereosinophilic Syndrome (HES)
Interventions
no intervention
Other
Lead sponsor
AstraZeneca
Industry
Eligibility
Not listed
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 11, 2025 · Synced Jun 10, 2026, 9:33 PM EDT
Terminated Phase 3 Interventional

A Study to Assess the Effect of Dexpramipexole in Adolescents and Adults With Severe Eosinophilic Asthma (EXHALE-3)

NCT05813288
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
654 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
76
States / cities
Mobile, Alabama • Chandler, Arizona • Peoria, Arizona + 64 more
Source: ClinicalTrials.gov public record
Updated Dec 14, 2025 · Synced Jun 10, 2026, 9:33 PM EDT
Completed Phase 1Phase 2 Interventional Results available

A Study of Oral AMN107 in Adults With Chronic Myelogenous Leukemia (CML) or Other Hematologic Malignancies

NCT00109707
View directory record Official record
Conditions
Chronic Myelogenous Leukemia, Acute Lymphoblastic Leukemia (Philadelphia Chromosome Positive), Hypereosinophilic Syndrome, Systemic Mastocytosis
Interventions
Nilotinib
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
507 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2012
U.S. locations
24
States / cities
Duarte, California • Stanford, California • Aurora, Colorado + 20 more
Source: ClinicalTrials.gov public record
Updated Jun 28, 2021 · Synced Jun 10, 2026, 9:33 PM EDT
Completed Phase 3 Interventional Results available

Study of Mepolizumab Autoinjector in Asthmatics

NCT03099096
View directory record Official record
Conditions
Asthma
Interventions
Mepolizumab
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Years and older
Enrollment
159 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
16
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Los Angeles, California + 13 more
Source: ClinicalTrials.gov public record
Updated Jun 27, 2023 · Synced Jun 10, 2026, 9:33 PM EDT
Recruiting Phase 3 Interventional

Randomised Clinical Trial to Investigate Efficacy and Safety of Benralizumab 30 mg SC as an add-on Therapy in Uncontrolled Eosinophilic Asthma Patients Treated With Medium-dose ICS-LABA Compared to Conventional Escalation to High-dose ICS-LABA Treatment

NCT06750289
View directory record Official record
Conditions
Eosinophilic Asthma
Interventions
ICS-LABA, benralizumab, Placebo for Benralizumab
Combination Product
Lead sponsor
AstraZeneca
Industry
Eligibility
12 Years to 75 Years
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
34
States / cities
Chandler, Arizona • Sun City, Arizona • Tucson, Arizona + 28 more
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Jun 10, 2026, 9:33 PM EDT
Recruiting Phase 2 Interventional

A Study of KT-621 Administered Orally to Adult Participants With Moderate to Severe Eosinophilic Asthma

NCT07323654
View directory record Official record
Conditions
Eosinophilic Asthma
Interventions
KT-621, Placebo
Drug · Other
Lead sponsor
Kymera Therapeutics, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
264 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
20
States / cities
Long Beach, California • Northridge, California • Redding, California + 16 more
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced Jun 10, 2026, 9:33 PM EDT
Recruiting Phase 3 Interventional

A Multicentre, Randomised, Double-blind, Parallel Group, Placebo-controlled, Time-to-first Asthma Exacerbation Phase III Efficacy and Safety Study of Benralizumab in Paediatric Patients With Severe Eosinophilic Asthma (DOMINICA)

NCT05692180
View directory record Official record
Conditions
Asthma
Interventions
Benralizumab, Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
6 Years to 18 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2032
U.S. locations
28
States / cities
Mobile, Alabama • Montgomery, Alabama • Tucson, Arizona + 24 more
Source: ClinicalTrials.gov public record
Updated May 31, 2026 · Synced Jun 10, 2026, 9:33 PM EDT
Not listed Phase 2 Interventional

Study to Evaluate Safety and Efficacy of Dexpramipexole (KNS-760704) in Subjects With Hypereosinophilic Syndrome

NCT02101138
View directory record Official record
Conditions
Hypereosinophilic Syndrome
Interventions
Dexpramipexole
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 6, 2017 · Synced Jun 10, 2026, 9:33 PM EDT
Terminated Phase 2 Interventional

Phase II Gleevec Idiopathic Hypereosinophilic Syndrome

NCT00230334
View directory record Official record
Conditions
Eosinophilia, Hypereosinophilic Syndrome
Interventions
Gleevec
Drug
Lead sponsor
Steven E. Coutre
Other
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated May 9, 2021 · Synced Jun 10, 2026, 9:33 PM 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 Jun 10, 2026, 9:33 PM EDT
Completed Phase 2 Interventional Results available

Dasatinib as Therapy for Myeloproliferative Disorders (MPDs)

NCT00255346
View directory record Official record
Conditions
Acute Myeloid Leukemia, Myelodysplastic Syndromes, Agnogenic Myeloid Metaplasia, Myelofibrosis, Hypereosinophilic Syndrome, Polycythemia Vera, Mastocytosis, Leukemia, Myelomonocytic, Chronic
Interventions
Dasatinib (BMS-354825)
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2017
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 29, 2025 · Synced Jun 10, 2026, 9:33 PM EDT
Active, not recruiting Phase 2 Interventional

Tyrosine Kinase Inhibition to Treat Myeloid Hypereosinophilic Syndrome

NCT00044304
View directory record Official record
Conditions
Eosinophilic Myeloid Neoplasm, Hypereosinophilic Syndrome
Interventions
Imatinib, Ruxolitinib
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
2 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 15, 2026 · Synced Jun 10, 2026, 9:33 PM EDT
Completed Phase 2 Interventional Results available

Proof of Concept Study to Investigate Etokimab (ANB020) Activity in Adult Participants With Severe Eosinophilic Asthma

NCT03469934
View directory record Official record
Conditions
Eosinophilic Asthma
Interventions
Etokimab, Placebo
Biological · Drug
Lead sponsor
AnaptysBio, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
4
States / cities
Normal, Illinois • Novi, Michigan • Edmond, Oklahoma + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 15, 2023 · Synced Jun 10, 2026, 9:33 PM EDT
Completed Phase 4 Interventional Results available

Omalizumab to Mepolizumab Switch Study in Severe Eosinophilic Asthma Patients

NCT02654145
View directory record Official record
Conditions
Asthma
Interventions
Mepolizumab 100mg SC, Albuterol/salbutamol MDIs, Omalizumab
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Years and older
Enrollment
145 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
13
States / cities
Birmingham, Alabama • Riverside, California • Roseville, California + 10 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2019 · Synced Jun 10, 2026, 9:33 PM EDT
Completed Phase 2 Interventional

Anti-Interleukin-5 Antibody to Treat Hypereosinophilic Syndrome

NCT00017862
View directory record Official record
Conditions
Hypereosinophilic Syndrome
Interventions
SCH55700
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Not listed
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2003
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Jun 10, 2026, 9:33 PM EDT
Completed Phase 3 Interventional Results available

Study to Evaluate the Efficacy and Safety of Reslizumab Treatment in Patients With Moderate to Severe Asthma

NCT01508936
View directory record Official record
Conditions
Eosinophilic Asthma
Interventions
Reslizumab, Placebo
Drug
Lead sponsor
Teva Branded Pharmaceutical Products R&D, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
511 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
66
States / cities
Birmingham, Alabama • Homewood, Alabama • Jasper, Alabama + 58 more
Source: ClinicalTrials.gov public record
Updated Jun 26, 2016 · Synced Jun 10, 2026, 9:33 PM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate the Efficacy and Safety of Reslizumab (0.3 or 3.0 mg/kg) as Treatment for Patients (12-75 Years of Age) With Eosinophilic Asthma

NCT01270464
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
315 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
26
States / cities
Anaheim, California • Fountain Valley, California • Los Angeles, California + 21 more
Source: ClinicalTrials.gov public record
Updated Jun 5, 2016 · Synced Jun 10, 2026, 9:33 PM EDT
Terminated Phase 3 Interventional Results available

Open-Label Extension Of Intravenous Mepolizumab In Patients With Hypereosinophilic Syndrome

NCT00097370
View directory record Official record
Conditions
Hypereosinophilic Syndrome
Interventions
mepolizumab
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 75 Years
Enrollment
78 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
10
States / cities
San Diego, California • Denver, Colorado • Bethesda, Maryland + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 6, 2017 · Synced Jun 10, 2026, 9:33 PM EDT
Recruiting Phase 2 Interventional

Dupilumab as Add-On Therapy for Hypereosinophilic Syndrome With Partial Clinical Response to Eosinophil-Depleting Biologic Agents

NCT06477653
View directory record Official record
Conditions
Hypereosinophilic Syndrome
Interventions
dupilumab
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 99 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated May 10, 2026 · Synced Jun 10, 2026, 9:33 PM EDT
Active, not recruiting Phase 3 Interventional

A Phase III Study to Evaluate the Efficacy and Safety of Benralizumab in Patients With Hypereosinophilic Syndrome (HES)

NCT04191304
View directory record Official record
Conditions
Hypereosinophilic Syndrome
Interventions
Benralizumab, Placebo
Biological
Lead sponsor
AstraZeneca
Industry
Eligibility
12 Years to 130 Years
Enrollment
134 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
8
States / cities
La Jolla, California • Atlanta, Georgia • Bethesda, Maryland + 5 more
Source: ClinicalTrials.gov public record
Updated Apr 1, 2026 · Synced Jun 10, 2026, 9:33 PM 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 Jun 10, 2026, 9:33 PM EDT
Completed No phase listed Observational

RANS. Study in Patients With Severe Eosinophilic Asthma and Nasal Polyps.

NCT05180357
View directory record Official record
Conditions
Severe Eosinophilic Asthma, Nasal Polyps
Interventions
FASENRA(benralizumab)
Other
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 99 Years
Enrollment
273 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
8
States / cities
Centennial, Colorado • Denver, Colorado • Glendale, New York + 5 more
Source: ClinicalTrials.gov public record
Updated Apr 18, 2023 · Synced Jun 10, 2026, 9:33 PM EDT