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Anti-Asthmatic Agents clinical trials

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NCT ID: NCT02130882 Active, not recruiting - Clinical trials for Hematologic Diseases

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

HESIL5R
Start date: May 19, 2014
Phase: Phase 2/Phase 3
Study type: Interventional

Background: - Eosinophils are white blood cells that help fight infections. High eosinophil levels can damage people s organs, causing hypereosinophilic syndrome (HES). Researchers want to study if the drug benralizumab can help people with HES. Objective: - To test if benralizumab can safely decrease eosinophils in people with HES. Eligibility: - Adults age 18-65 who have been on stable HES therapy for at least 1 month but still have symptoms and high eosinophil levels. Design: - Participants will be screened with medical history, physical exam, and urine and blood tests. They will take simple heart and lung tests. - Participants will also have a bone marrow biopsy. A numbing medicine is injected into the outer covering of the bone. Then a needle is inserted into the bone. A fast suction movement takes bone marrow cells. - Phase 1: Participants will randomly receive either the study drug or placebo as an injection. - They will have daily visits for the next 3 days, then 4 weekly visits, and then 4 biweekly visits. Each time, they will have medical history, physical exam, blood tests, and a check of side effects. - They will receive another dose of the study drug or placebo at 1 month and 2 months after the first injection. - Phase 2 repeats the Phase 1 schedule. All participants will receive the study drug. - At 1 visit, participants will also receive a vaccine. At 4 visits, they will repeat the heart and lung tests. They will also have one other bone marrow biopsy. - After week 24, participants will receive the study drug either 6 times over 6 months or twice over 6 months.