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Efficacy and Safety Study of Mepolizumab Adjunctive Therapy in Subjects With Severe Uncontrolled Refractory Asthma

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Last updated:1st Oct 2012

This study will evaluate two dose regimens of mepolizumab [75mg intravenous (i.v.) or 100mg subcutaneous (SC) every 4 weeks] compared with placebo over a 32 week treatment period in subjects with severe refractory asthma with elevated blood eosinophils. Efficacy will be measured by a reduction in the frequency of asthma exacerbations. Additional efficacy assessments will include measurements of lung function, symptom scores, and quality of life. Safety will be assessed by clinical laboratory samples, ECGs, immunogenicity and adverse events.

This study is intended to replicate the Phase IIb/III study MEA112997. Subjects in MEA115588, who meet all eligibility criteria at screening visit, will enter the run-in period. Those subjects that are not able/eligible to be randomised at the end of the 6 week run-in period will be deemed run-in failures. Subjects will remain on their current maintenance therapy throughout the run-in, double-blind treatment administration and follow-up periods. Subjects who meet the randomisation eligibility criteria will be randomised in a 1:1:1 ratio to receive one of the following treatments every 4 weeks for a total of 8 doses: Mepolizumab 75 miligram (mg) i.v. and placebo SC, or Mepolizumab 100 mg SC and placebo i.v. or Placebo i.v. and placebo SC.

Subjects that receive all 8 doses of double-blind treatment, and meet the eligibility criteria for the Open-Label Extension (OLE) Study, will be offered the opportunity to participate in the OLE trial.

Study Type: Interventional
Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
Official Title: MEA115588 A Randomised, Double-blind, Double-dummy, Placebo-controlled, Parallel-group, Multi-centre Study of the Efficacy and Safety of Mepolizumab Adjunctive Therapy in Subjects With Severe Uncontrolled Refractory Asthma
Enrollment: 580
Study Start Date: October 2012
Study Completion Date: January 2014
Primary Completion Date: January 2014 (Final data collection date for primary outcome measure)

- Experimental:
Mepolizumab IV
- Experimental: Mepolizumab SC
- Placebo Comparator: Placebo

Related journal: Mepolizumab treatment in patients with severe eosinophilic asthma

Category Value
Study start date 2012-10-01

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