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Mechanisms of Allergen Immunotherapy
NCT00001910 · View on ClinicalTrials.gov ↗
Study Summary
This study will examine how allergen immunotherapy (allergy shots) works to reduce or prevent reactions to allergens such as pollen, dust or cat dander. Certain T cells (types of white blood cells) called Th2 cells produce substances that generate allergies. Other T cells called Th1 cells produce substances that have opposite effects. This study will determine if allergy shots change the immune response to allergens by reducing the number of Th2 cells or by changing them into Th1 cells. A better understanding of how this treatment works may help scientists develop more effective allergy therapies. People between 18 and 50 years of age who have had allergic asthma for at least 1 year may participate in this study. Candidates' medical, allergy and medication histories will be reviewed, and they will have a physical examination, including routine blood tests, urinalysis, electrocardiogram (EKG), and lung function test. Blood will also be drawn to test T cell response to allergens, and 12 skin tests (similar to a tuberculosis skin test) will be done to test for sensitivity to various allergens. Participants will be admitted to the Clinical Center for 1 to 2 days for rush therapy (see below). They will have a brief history and physical examination. A heparin lock (thin plastic tube similar to an intravenous line) will be placed in an arm vein. They will then undergo the following procedures: * Rush/Cluster Immunotherapy - An allergen is given in increasing doses over 2 to 5 weeks. During rush therapy, the dose is increased rapidly over 1 to 2 days until a moderate level dose is reached. To reduce the chance of an allergic reaction, patients take prednisone, cetirizine (Zyrtec® (Registered Trademark)), ranitidine (Zantac® (Registered Trademark)) and montelukast (Singular® (Registered Trademark)) starting 24 hours before treatment begins until rush therapy ends. After discharge on the third day, patients return to the clinic once a week for the next 2 to 5 weeks for clu
Conditions Studied
Study Locations (1)
Maryland
- National Institute of Allergy and Infectious Diseases (NIAID) — Bethesda
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 50 participants |
| Start Date | 1999-07 |
| Est. Completion | 2003-08 |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT00001910
The ClinicalTrials.gov registry entry for NCT00001910 describes a study currently listed as completed. It is categorized as an unspecified phase, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 50 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is National Institute of Allergy and Infectious Diseases (NIAID), which has 1,295 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 2 conditions, with Asthma appearing as the primary indexed condition, and to 0 interventions. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT00001910 reports 1 study location spanning 1 distinct geographic area — top geographies include Maryland. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT00001910 about?
NCT00001910 is a clinical study titled "Mechanisms of Allergen Immunotherapy". This study will examine how allergen immunotherapy (allergy shots) works to reduce or prevent reactions to allergens such as pollen, dust or cat dander. Certain T cells (types of white blood cells) called Th2 cells produce substances that generate allergies. Other T cells called Th1 cells produce su...
What is the current status of trial NCT00001910?
This trial is currently completed. The enrollment target is 50 participants. The study started on 1999-07. Estimated completion is 2003-08.
What conditions does trial NCT00001910 study?
This clinical trial studies the following conditions: Asthma, Hypersensitivity. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
Who is sponsoring clinical trial NCT00001910?
This trial is sponsored by National Institute of Allergy and Infectious Diseases (NIAID), which has 1,295 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT00001910 being conducted?
This trial has 1 study location across Maryland. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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