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Glasgow Asthma and Allergy Study (GLAAS)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01618318
Recruitment Status : Completed
First Posted : June 13, 2012
Last Update Posted : December 5, 2013
Merck Sharp & Dohme Corp.
Information provided by (Responsible Party):
National Services for Health Improvement Ltd

Brief Summary:

In the past, doctors separated people with asthma into two groups, those with "allergic asthma" (about 2/3rds of people) and those with "non-allergic asthma". These labels are not much used now as the treatments for all people with asthma don't depend on this classification. However, new treatments for asthma may become available and the classification may again become important. It could be useful for clinicians to know how to identify which patients are likely to benefit from particular treatments.

Additionally, some new blood tests are becoming available and some of these might help to categorise the type of asthma people have. What the study hopes to do is to identify patient features which make a diagnosis of "allergic asthma" more likely and to see which new blood tests are most likely to be helpful in confirming this diagnosis.

Condition or disease
Asthma Allergy

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Study Type : Observational
Actual Enrollment : 105 participants
Observational Model: Cohort
Time Perspective: Cross-Sectional
Official Title: Cross Sectional Study to Evaluate and Associate Clinical and Laboratory Features of People With Allergic and Non-allergic Asthma
Study Start Date : June 2012
Actual Primary Completion Date : October 2013
Actual Study Completion Date : October 2013

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Allergy Asthma

General asthma population
People with asthma, aged 18 years and over, non smoker, all severities of disease, regardless of treatment, broad inclusion and few exclusion criteria.

Primary Outcome Measures :
  1. Serum periostin level [ Time Frame: 1 day ]
    This is a cross sectional study. Participants will be assessed and tests conducted at a single visit

Secondary Outcome Measures :
  1. skin prick test [ Time Frame: 1 day ]
  2. Serum total IgE [ Time Frame: 1 day ]
  3. Blood eosinophil count [ Time Frame: 1 day ]
  4. Blood neutrophil count [ Time Frame: 1 day ]
  5. Blood CD4 cells that are positive for CRTh2 [ Time Frame: 1 day ]
  6. Blood eosinophils expressing CRTh2 [ Time Frame: 1 day ]
  7. Spirometry [ Time Frame: 1 day ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
People with asthma, non smoker, aged 18 and over.

Inclusion Criteria:

  • Male and female patients aged 18 years old and over with a diagnosis of asthma and having received at least two prescriptions for any asthma medication in the last 12 months, who have signed an informed consent form prior to initiation of any study-related procedure

Exclusion Criteria:

  • under 18 years
  • current smokers
  • unwilling or unable to give informed consent
  • a clinical diagnosis of COPD
  • a history of anaphylaxis (skin prick test)
  • participated in any clinical study in the last 12 months

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01618318

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United Kingdom
Dartford, Kent, United Kingdom, DA1 5GA
Sponsors and Collaborators
National Services for Health Improvement Ltd
Merck Sharp & Dohme Corp.
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Principal Investigator: John A Haughney, MB ChB NSHI Ltd
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Responsible Party: National Services for Health Improvement Ltd Identifier: NCT01618318    
Other Study ID Numbers: 12/WS/0049
First Posted: June 13, 2012    Key Record Dates
Last Update Posted: December 5, 2013
Last Verified: December 2013
Keywords provided by National Services for Health Improvement Ltd:
Correlation study
Additional relevant MeSH terms:
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Bronchial Diseases
Respiratory Tract Diseases
Lung Diseases, Obstructive
Lung Diseases
Respiratory Hypersensitivity
Hypersensitivity, Immediate
Immune System Diseases