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Completed Phase 3 Interventional Results available

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

ClinicalTrials.gov ID: NCT01691521

Public ClinicalTrials.gov record NCT01691521. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Jul 22, 2026, 5:04 PM EDT

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

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

Study identification

NCT ID
NCT01691521
Recruitment status
Completed
Study type
Interventional
Phase
Phase 3
Lead sponsor
GlaxoSmithKline
Industry
Enrollment
580 participants

Conditions and interventions

Conditions

Interventions

  • Mepolizumab IV Drug
  • Mepolizumab SC Drug
  • IV Placebo Drug
  • SC Placebo Drug

Drug

Eligibility (public fields only)

Age range
12 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Oct 7, 2012
Primary completion
Dec 31, 2013
Completion
Jan 17, 2014
Last update posted
Aug 5, 2018

2012 – 2014

United States locations

U.S. sites
21
U.S. states
14
U.S. cities
20
Facility City State ZIP Site status
GSK Investigational Site Birmingham Alabama 35294
GSK Investigational Site Newport Beach California 92663
GSK Investigational Site Riverside California 92506
GSK Investigational Site Rolling Hills Estates California 90274
GSK Investigational Site Denver Colorado 80206
GSK Investigational Site New Haven Connecticut 06520
GSK Investigational Site Albany Georgia 31707
GSK Investigational Site Chicago Illinois 60612
GSK Investigational Site Baltimore Maryland 21224
GSK Investigational Site Rochester Minnesota 55905
GSK Investigational Site New York New York 10029
GSK Investigational Site Rochester New York 14642
GSK Investigational Site Durham North Carolina 27705
GSK Investigational Site Winston-Salem North Carolina 27103
GSK Investigational Site Cincinnati Ohio 45229
GSK Investigational Site Cincinnati Ohio 45231
GSK Investigational Site Cleveland Ohio 44195
GSK Investigational Site Columbus Ohio 43221
GSK Investigational Site Hershey Pennsylvania 17033
GSK Investigational Site Nashville Tennessee 37203
GSK Investigational Site Salt Lake City Utah 84132-2409

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 113 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT01691521, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Aug 5, 2018 · Synced Jul 22, 2026

Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.

Open the official record

The complete protocol, eligibility criteria, and contact information for NCT01691521 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →