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

Hypereosinophilic Syndrome Clinical Trial

Official title:
A Multicentre, Randomised, Double-blind, Parallel-group, Placebo-controlled, 24 Week Phase III Study With an Open-label Extension to Evaluate the Efficacy and Safety of Benralizumab in Patients With Hypereosinophilic Syndrome (HES)

Clinical Trial Summary

This is a multicentre, randomised, double-blind (DB), parallel-group, placebo-controlled, 24-week Phase III study to compare the efficacy and safety of benralizumab versus placebo administered by SC injection Q4W in patients with hypereosinophilic syndrome (HES). This study comprises 2 distinct periods (together defined as the 'main study'): A 24-week, DB treatment period, during which patients will be randomised to receive either benralizumab or placebo, in addition to their prior stable HES background therapy, and an open-label extension (OLE) period, during which all patients will receive benralizumab. Patients will continue to be recruited until approximately 38 patients have had their first HES worsening/flare during the DB treatment period at which point the data cut-off for the primary database lock (DBL) will occur. Treatment allocation will remain blinded until the primary DBL. After the study is unblinded for the primary analysis, patients and investigators will remain blinded to patients' individual treatment allocations until after the final patient completes the DB treatment period. The primary analysis will only include data from the DB treatment period of the study. A follow-up analysis will be performed once all patients have the opportunity to complete the 24-week DB treatment period. A patient must complete the 24-week DB treatment period on investigational product (IP) to be eligible to enter the OLE treatment period. The final DBL will occur after the last patient completes the OLE.

Clinical Trial Description

n/a

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04191304
Study type Interventional
Source AstraZeneca
Contact AstraZeneca Clinical Study Information Center
Phone 1-877-240-9479
Email information.center@astrazeneca.com
Status Recruiting
Phase Phase 3
Start date July 20, 2020
Completion date November 20, 2026
View Details
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