- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03406325
Mast Cell Activation Test in Allergic Disease
Assessment of Mast Cell Activation Diagnostic Test in Patients With Allergic Disease
Study Overview
Status
Detailed Description
The objective of this study is to assess whether patients with severe allergic diseases exhibit high levels of mast cell activation as determined by the mast cell activation diagnostic test the investigators have developed. They anticipate that patients with history of severe allergic reactions will show up as high responders in the blood-based mast cell activation diagnostic test. Moreover, using microarray analysis as the approach for gene expression studies, they anticipate further that genomics biomarkers that are correlated with the high functional activation of the in-vitro mast cells derived from these patients can be readily identified.
About 100 ml of peripheral venous blood from individual patients will be drawn into heparinized syringes and collected in a blood-collecting bag/tube containing silica. The bag/tube will be promptly processed for the generation of primary human mast cell cultures using the protocol that has previously been developed [Inflammation Research 66: 25 (2017). After culturing for 9 weeks, the resulting human mast cells will be analyzed for both their functional activity in terms of histamine release in response to the activation of high-affinity Immunoglobulin E (IgE) receptors in these cells and their gene expression profiles using microarray analysis. The in-vitro functional and genomics data will be correlated with specific diagnoses and measurements of blood prostaglandin D2 (PGD2), PGD2 metabolites, tryptase and histamine levels in blood. For mediator assays, plasma from each subject will be collected after the cluster of differentiation 34 positive (CD34+) isolation step and the samples will be aliquoted and frozen at -80 degrees centigrade for subsequent analysis.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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Hong Kong, Hong Kong
- Hong Kong Sanatorium & Hospital
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
Any patients with the above diagnoses -
Exclusion Criteria:
Children < 18 years old; those who are unwilling or unable to donate blood; pregnant mothers.
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Study Plan
How is the study designed?
Design Details
- Observational Models: Cohort
- Time Perspectives: Cross-Sectional
Cohorts and Interventions
Group / Cohort |
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urticaria
Patients with this condition
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asthma
Patients with this condition
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eczema
Patients with this condition
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food allergy
Patients with this condition
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anaphylaxis
Patients with this condition
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mastocytosis
Patients with this condition
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mast cell activating syndrome
Patients with this condition
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
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Mast Cell Activation Test Results for Validation Group
Time Frame: Mast cells studied after 9 weeks in culture
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Mast Cell Activation Test results of high/low level of house dust mite sensitivity by using normal donor cultured mast cells for validation.
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Mast cells studied after 9 weeks in culture
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Evaluation of Patient's Serum for Autoreactivity on Normal Average Responder Mast Cell Activation
Time Frame: Mast cells studied after 9 weeks in culture
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Patient's serum was incubated with mast cells derived from normal donors for detection of mast cell activation as evidenced by histamine release.
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Mast cells studied after 9 weeks in culture
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Percentage Histamine Release by Normal Average Responder Mast Cells + Patient's Serum to Assess Autoreactivity
Time Frame: Mast cells studied after 9 weeks in culture
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percentage of total histamine release by normal average responder mast cells that had been activated with patient's serum
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Mast cells studied after 9 weeks in culture
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Percentage Histamine Release by Patient's Mast Cells + Immunoglobulin E (IgE)/Anti-IgE
Time Frame: Mast cells studied after 9 weeks in culture
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percentage of total histamine release by patient's mast cells that had been activated with anti-IgE
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Mast cells studied after 9 weeks in culture
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Percentage of Histamine Release by Patient's Mast Cells + Patient's Serum + Allergen
Time Frame: Mast cells studied after 9 weeks in culture
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Percentage of total histamine release when patient's mast cells were activated with patient's own serum and Der p2.
Each patient's results are reported individually.
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Mast cells studied after 9 weeks in culture
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Cell Yield Per 100ml Blood
Time Frame: Mast cells studied after 9 weeks in culture
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Cell yield of patient's mast cell culture after 9 weeks in culture as an index of cell growth and differentiation.
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Mast cells studied after 9 weeks in culture
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Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Tak H Lee, Hong Kong Sanatorium and Hospital
Publications and helpful links
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Skin Diseases
- Immune System Diseases
- Neoplasms, Connective and Soft Tissue
- Neoplasms by Histologic Type
- Neoplasms
- Hypersensitivity, Immediate
- Skin Diseases, Vascular
- Hypersensitivity
- Neoplasms, Connective Tissue
- Immune Complex Diseases
- Food Hypersensitivity
- Urticaria
- Mastocytosis
- Chronic Urticaria
- Anaphylaxis
Other Study ID Numbers
- REC-2017-17
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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