An observational study in Asthma and Allergy, sponsored by National Services for Health Improvement Ltd. Completed at 1 site in United Kingdom. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2013-12-05.
Sponsored by National Services for Health Improvement Ltd · Observational
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.
3,921 studies on the registry are indexed under Asthma; 507 are open to participants now.
This study's enrollment of 105 is below the median of 150 across 970 observational studies indexed under Asthma.
Browse Asthma studies →National Services for Health Improvement Ltd is the lead sponsor of 2 studies on the registry; none are open to participants now.
Counted across the registry records on this site, refreshed daily.
People with asthma, non smoker, aged 18 and over.
Exclusion Criteria:
People with asthma, aged 18 years and over, non smoker, all severities of disease, regardless of treatment, broad inclusion and few exclusion criteria.
Serum periostin level
This is a cross sectional study. Participants will be assessed and tests conducted at a single visit
Time frame: 1 day
skin prick test
Time frame: 1 day
Serum total IgE
Time frame: 1 day
Blood eosinophil count
Time frame: 1 day
Blood neutrophil count
Time frame: 1 day
Blood CD4 cells that are positive for CRTh2
Time frame: 1 day
Blood eosinophils expressing CRTh2
Time frame: 1 day
Spirometry
Time frame: 1 day
This study is completed, as verified in Dec 2013. You cannot join it, but the record below documents what was studied.
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National Services for Health Improvement Ltd