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ClinicalTrials.gov public records Last synced May 22, 2026, 12:16 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Hypereosinophilic Syndrome Clear all
Recruiting No phase listed Observational Accepts healthy volunteers
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 May 22, 2026, 12:16 AM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Eosinophilic Asthma, Asthma
Interventions
Dexpramipexole, Placebo
Drug
Lead sponsor
Knopp Biosciences
Industry
Eligibility
18 Years to 74 Years
Enrollment
534 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
36
States / cities
Los Angeles, California • Mission Viejo, California • Westminster, California + 30 more
Source: ClinicalTrials.gov public record
Updated Apr 12, 2023 · Synced May 22, 2026, 12:16 AM EDT
Completed Phase 4 Interventional Results available
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 May 22, 2026, 12:16 AM EDT
Completed Phase 3 Interventional Results available
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 May 22, 2026, 12:16 AM EDT
Completed Phase 3 Interventional Results available
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 May 22, 2026, 12:16 AM EDT
Completed Phase 3 Interventional Results available
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 May 22, 2026, 12:16 AM EDT
Completed Phase 1Phase 2 Interventional
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 May 22, 2026, 12:16 AM EDT
Recruiting Phase 2 Interventional
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 May 22, 2026, 12:16 AM EDT
Not yet recruiting Phase 1 Interventional Accepts healthy volunteers
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 May 22, 2026, 12:16 AM EDT
Completed Phase 2 Interventional Results available
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 May 22, 2026, 12:16 AM EDT
Completed Phase 3 Interventional Results available
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 May 22, 2026, 12:16 AM EDT
Completed Phase 2 Interventional Results available
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 May 22, 2026, 12:16 AM EDT
Completed Phase 3 Interventional Results available
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 May 22, 2026, 12:16 AM EDT
Completed Not applicable Interventional Results available
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 May 22, 2026, 12:16 AM EDT
Recruiting Phase 2 Interventional
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 May 22, 2026, 12:16 AM EDT
Completed Phase 3 Interventional Results available
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 May 22, 2026, 12:16 AM EDT
Completed Phase 1Phase 2 Interventional Results available
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 May 22, 2026, 12:16 AM EDT
Completed No phase listed Observational
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 May 22, 2026, 12:16 AM EDT
Active, not recruiting Phase 1Phase 2 Interventional
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 May 22, 2026, 12:16 AM EDT
Completed Phase 2 Interventional
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 May 22, 2026, 12:16 AM EDT
Completed Phase 4 Interventional Results available
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 May 22, 2026, 12:16 AM EDT
Active, not recruiting Phase 3 Interventional
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 May 22, 2026, 12:16 AM EDT
Terminated Phase 3 Interventional
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 May 22, 2026, 12:16 AM EDT
Completed Phase 3 Interventional Results available
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 May 22, 2026, 12:16 AM EDT