Hypereosinophilic syndrome
MONDO:0015691Hypereosinophilic syndrome (HES) constitutes a rare and heterogeneous group of disorders, defined as persistent and marked blood eosinophilia and/or tissue eosinophilia associated with a wide range of clinical manifestations reflecting eosinophil-induced tissue/organ damage.
Also known as: HES, hypereosinophilic disease, hypereosinophilic disorder, hypereosinophilic syndrome, eosinophilia
54 clinical trials for this condition and its sub-types.
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Broader categories
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New asthma pill shows promise in Mid-Stage trial
Disease control Recruiting nowThis study tests an oral drug called KT-621 in 264 adults with moderate to severe eosinophilic asthma that is not well controlled by current treatments. Participants will take either KT-621 or a placebo daily for several weeks. Researchers will measure changes in lung function an…
Phase: PHASE2 • Sponsor: Kymera Therapeutics, Inc. • Aim: Disease control
Last updated Aug 18, 2026 05:00 UTC
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New drug aims to tame rare blood disorder flares
Disease control Recruiting nowThis study tests a drug called depemokimab in adults with hypereosinophilic syndrome (HES), a rare condition where too many eosinophils (a type of white blood cell) cause organ damage. The trial includes 123 people whose HES is not well controlled despite standard therapy. Partic…
Phase: PHASE3 • Sponsor: GlaxoSmithKline • Aim: Disease control
Last updated Jul 31, 2026 00:00 UTC
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New hope for kids with rare blood disorders: benralizumab trial launches
Disease control Recruiting nowThis Phase 3 trial tests the drug benralizumab (Fasenra) in children aged 6 to 17 with two rare eosinophilic diseases: EGPA and HES. The study aims to see if the drug is safe, how it works in the body, and whether it can help control the disease. Fourteen children will receive in…
Phase: PHASE3 • Sponsor: AstraZeneca • Aim: Disease control
Last updated Jul 23, 2026 00:00 UTC
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New hope for rare blood disorder: dupilumab combo trial launches
Disease control Recruiting nowThis study tests whether adding dupilumab to standard treatment can help people with hypereosinophilic syndrome (HES) who still have symptoms despite current biologic therapy. About 30 adults will receive dupilumab injections for up to 48 weeks while continuing their usual medica…
Phase: PHASE2 • Sponsor: National Institute of Allergy and Infectious Diseases (NIAID) • Aim: Disease control
Last updated Jul 17, 2026 00:00 UTC
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New study tests if asthma drug can stop symptoms Long-Term
Disease control Recruiting nowThis study follows 335 adults with severe eosinophilic asthma who are taking benralizumab. Researchers want to see if the drug helps patients achieve partial or complete clinical remission—meaning fewer symptoms, no need for steroid pills, and better lung function—over 12 to 24 m…
Sponsor: AstraZeneca • Aim: Disease control
Last updated Jul 10, 2026 00:00 UTC
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Real-World study tests Benralizumab's impact on severe asthma control
Disease control Recruiting nowThis study follows 300 adults with severe eosinophilic asthma who are prescribed benralizumab as part of their normal care in Germany. Researchers will track changes in asthma control, lung function, and medication use over one year. The goal is to see how the drug performs outsi…
Sponsor: AstraZeneca • Aim: Disease control
Last updated Jun 27, 2026 14:02 UTC
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New asthma drug could cut attacks for patients not helped by standard inhalers
Disease control Recruiting nowThis phase 3 trial is testing whether adding benralizumab (an injectable drug) to medium-dose inhalers can reduce asthma attacks in people with eosinophilic asthma whose symptoms are not well controlled. About 400 participants aged 12 to 75 will be randomly assigned to receive be…
Phase: PHASE3 • Sponsor: AstraZeneca • Aim: Disease control
Last updated Jun 27, 2026 12:33 UTC
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New asthma drug aims to cut severe attacks in half
Disease control Recruiting nowThis study tests an experimental drug called SIM0718 for people with asthma that is not well controlled by current inhalers. About 418 adults and teens aged 12 to 75 will receive either the drug or a placebo for one year. The main goal is to see if the drug reduces the number of …
Phase: PHASE3 • Sponsor: Simcere Pharmaceutical Co., Ltd • Aim: Disease control
Last updated Jun 27, 2026 12:03 UTC
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New hope for rare blood disorder: drug targets overactive immune cells
Disease control Recruiting nowThis phase 2 trial is testing the drug ruxolitinib in people with hypereosinophilic syndrome, a rare condition where the body produces too many eosinophils (a type of white blood cell), causing organ damage. The study aims to see if ruxolitinib can normalize blood cell counts and…
Phase: PHASE2 • Sponsor: William Shomali • Aim: Disease control
Last updated Jun 27, 2026 08:06 UTC
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Scientists seek clues on white blood cell behavior in allergies and parasites
Knowledge-focused Recruiting nowThis study aims to understand how and why eosinophils (a type of white blood cell) become active in conditions like allergies, asthma, and parasitic infections. Researchers will observe up to 800 people aged 1 to 100 with high eosinophil levels. No experimental treatments are giv…
Sponsor: National Institute of Allergy and Infectious Diseases (NIAID) • Aim: Knowledge-focused
Last updated Aug 18, 2026 05:00 UTC
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Heart scans may unlock hidden risks in minority communities
Knowledge-focused Recruiting nowThis study is looking at whether advanced heart imaging, especially cardiac MRI, can help identify the cause of cardiomyopathy and predict risks like death or heart failure in a diverse group of patients. The research focuses on adults in the Bronx, including many from Hispanic a…
Sponsor: Montefiore Medical Center • Aim: Knowledge-focused
Last updated Aug 12, 2026 00:00 UTC
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Scientists track rare family condition to uncover hidden clues about blood disorder
Knowledge-focused Recruiting nowThis study follows about 50 members of a family with a rare inherited condition called familial hypereosinophilia, where high levels of a type of white blood cell can damage the heart and nerves. Researchers will track participants over many years with yearly checkups, blood test…
Sponsor: National Institute of Allergy and Infectious Diseases (NIAID) • Aim: Knowledge-focused
Last updated Aug 06, 2026 00:00 UTC
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10,000 heart patients join online registry to unlock secrets of cardiomyopathy
Knowledge-focused Recruiting nowThis study is building a large online registry of 10,000 adults with cardiomyopathy or myocarditis, plus those with a strong family history. Researchers will track participants over time to see how many experience serious events like heart failure, dangerous heart rhythms, or dea…
Sponsor: Imperial College London • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:01 UTC
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AI could help predict sudden cardiac death in hereditary heart disease patients
Knowledge-focused Recruiting nowThis study aims to improve how doctors predict the risk of sudden cardiac death or heart failure in people with inherited heart diseases. Researchers will use artificial intelligence to analyze data from 1,000 participants, including medical history, ECGs, imaging, genetic tests,…
Sponsor: Nantes University Hospital • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:00 UTC
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Scientists launch national effort to unravel mysteries of rare blood disorder
Knowledge-focused Recruiting nowThis study is collecting information from 600 people with chronically high levels of eosinophils (a type of white blood cell) or related organ damage. Researchers want to describe the different symptoms, disease patterns, and genetic factors involved. The goal is to better unders…
Sponsor: University Hospital, Lille • Aim: Knowledge-focused
Last updated Jun 27, 2026 09:07 UTC
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Can we predict who will die suddenly from heart problems?
Knowledge-focused Recruiting nowThis study follows 1500 people who already have an implantable cardioverter-defibrillator (ICD) to prevent sudden cardiac death. Researchers will track heart function, genetics, and blood markers to find better ways to predict who is at highest risk. The goal is to improve how do…
Sponsor: Johns Hopkins University • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:13 UTC
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Heart tissue analysis aims to unlock better diagnosis
Knowledge-focused Recruiting nowThis study looks at heart tissue samples from 216 adults who already need a biopsy as part of their care. Researchers want to find unique molecular patterns in different heart conditions, including after a heart transplant. The goal is to improve how these diseases are diagnosed …
Sponsor: University Hospital, Essen • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:12 UTC
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AI steps in to solve a rare disease diagnosis puzzle
Knowledge-focused Recruiting nowThis study collects medical data from 60 adults diagnosed with either EGPA or HES, two rare conditions that cause high levels of a type of white blood cell. Researchers will use artificial intelligence to find patterns that help doctors tell the diseases apart and predict how pat…
Phase: NA • Sponsor: Fondazione IRCCS Policlinico San Matteo di Pavia • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:03 UTC