- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02543346
Comparability and Standardization of Controlled Allergen Challenge Facilities
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
When CACF have been designed with a high degree of rigor, quality assurance and validation testing, the exposure to controlled levels of pollen in such facilities as the Environmental Exposure Unit (EEU) and the Biogenics Research Chamber (BRC) will demonstrate comparable/standardized symptomatic responses. This will be demonstrable not only following pollen exposure but will also have similar reductions in symptoms following treatment with a Food and Drug Administration (FDA) approved medication known to be effective for the treatment of seasonal allergic rhinoconjunctivitis ( SAR); cetirizine 10mg. Because of quality assurance and validation testing completed at these facilities a priori, this comparability will be demonstrated despite their disparate geographical physical locations and the utilization of these facilities of somewhat different mechanical and technical materials and methods to achieve similar outcomes.
This multi-center study of SAR will enroll 50 participants at each site. These participants will be age 18-65, male and female, with a mixture of ethnic groups. The study will involve 3 Phases: Screening, Treatment Exposure Visit, and a cross-over Treatment Exposure Visit. In all stages, a CACF visit will be pivotal to determine participant eligibility for enrollment and response to therapy. The qualifying participants will receive a double-blinded, placebo-controlled, crossover intervention with cetirizine HCl 10mg.
All participants will give written informed consent prior to any study related procedures being performed. Participants who meet all inclusion/exclusion criteria during the screening process will be asked to return to the EEU for their first pollen exposure visit (Treatment Visit #1). At the Screening Visit participants will provide a full medical history and undergo a physical examination. They will have their height/weight and vitals measured and skin testing will be performed to confirm allergic response to a panel of common aeroallergens. Women of child bearing potential will undergo a urine pregnancy test to rule out pregnancy. Eligible participants will be invited back to the research centre for 4 pollen exposure visits at 2 of these visits participants will receive either cetirizine or placebo. All participants will receive placebo at some point throughout the study.
Study Type
Enrollment (Actual)
Phase
- Phase 4
Contacts and Locations
Study Locations
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Ontario
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Kingston, Ontario, Canada, K7L 2V7
- Kingston General Hospital
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Texas
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San Antonio, Texas, United States, 78229
- Biogenics Research Chamber
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- history of rhinoconjunctivitis during ragweed season for a minimum of 2 years, including the previous 2 ragweed seasons.
- positive skin test to ragweed allergen.
Exclusion Criteria:
- participant is pregnant, lactating or actively trying to conceive.
- has a history of receiving immunotherapy containing short ragweed within the last 3 years.
- participant has current allergy symptoms.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Other
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Placebo Comparator: placebo
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Participants will receive either a placebo or cetirizine (10mg tablet, orally) at one of the two treatment visits
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Other: cetirizine hydrochloride
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Participants will receive either cetirizine (10mg tablet, orally) or a placebo (sugar pill) at one of the two treatment visits.
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Comparison of TRSS From Baseline Between the EEU and BRC in the Cetirizine 10 mg and Placebo Groups.
Time Frame: First treatment visit and second treatment visit.
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Participants recorded their nasal and ocular symptoms at baseline and during the intervention visits. The TRSS is a composite score comprised of 4 nasal (runny nose, sneezing, nasal itch, nasal congestion) and 3 ocular (itchy eyes, watery eyes, red/burning eyes) symptoms. The severity of each individual symptom is rated on a 4-point scale (0 to 3) and are summed for a maximum TRSS of 21 (0 to 21).The 4-point scale includes a severity score of 0 (None: no sign/symptom is evident), 1 (Mild: Sign/symptom clearly present, but minimal awareness; easily tolerated), 2 (Moderate: Definite awareness of sign/symptom that is bothersome, but tolerable), 3 (Severe: Sign/symptom that is hard to tolerate; causes interference with activities during the challenge session. A higher score indicates higher symptom severity. |
First treatment visit and second treatment visit.
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Comparison of TNSS From Baseline Between the EEU and BRC in the Cetirizine 10 mg and Placebo Groups.
Time Frame: First treatment visit and second treatment visit.
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Participants recorded their nasal and ocular symptoms at baseline and during the intervention visits. The Total Nasal Symptom Score (TNSS) is a composite score comprised of 4 nasal (runny nose, sneezing, nasal itch, nasal congestion) symptoms. The severity of each individual symptom is rated on a 4-point scale (0 to 3) and are summed for a maximum TNSS of 12 (0 to 12) .The 4-point scale includes a severity score of 0 (None: no sign/symptom is evident), 1 (Mild: Sign/symptom clearly present, but minimal awareness; easily tolerated), 2 (Moderate: Definite awareness of sign/symptom that is bothersome, but tolerable), 3 (Severe: Sign/symptom that is hard to tolerate; causes interference with activities during the challenge session. A higher score indicates higher symptom severity. |
First treatment visit and second treatment visit.
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Comparison of TOSS From Baseline Between the EEU and BRC in the Cetirizine 10 mg and Placebo Groups.
Time Frame: First treatment visit and second treatment visit.
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Participants recorded their nasal and ocular symptoms at baseline and during the intervention visits. The Total Ocular Symptom Score (TOSS) is a composite score comprised of 3 ocular (itchy eyes, watery eyes, red/burning eyes) symptoms. The severity of each individual symptom is rated on a 4-point scale (0 to 3) and are summed for a maximum TOSS of 9 (0 to 9) .The 4-point scale includes a severity score of 0 (None: no sign/symptom is evident), 1 (Mild: Sign/symptom clearly present, but minimal awareness; easily tolerated), 2 (Moderate: Definite awareness of sign/symptom that is bothersome, but tolerable), 3 (Severe: Sign/symptom that is hard to tolerate; causes interference with activities during the challenge session. A higher score indicates higher symptom severity. |
First treatment visit and second treatment visit.
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Comparison of GRCS From Baseline Between the EEU and BRC in the Cetirizine 10 mg and Placebo Groups.
Time Frame: First treatment visit and second treatment visit.
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Participants recorded how they were feeling at baseline and at the end of both treatment visits. The Global Rating of Change Scale documents the changes in the participant's emotions. The scale ranges from +7 (A very great deal better) to -7 (A very great deal worse) with 0 being no change. A higher score indicates a better outcome. |
First treatment visit and second treatment visit.
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Comparison of VAS From Baseline Between the EEU and BRC in the Cetirizine 10 mg and Placebo Groups.
Time Frame: First treatment visit and second treatment visit.
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Participants recorded the severity of all nasal and ocular symptoms at baseline and at the end of both treatment visits. The Visual Analogue Scale (VAS) is a single overall rating of the severity of all nasal and ocular symptoms experienced by the participant. The scale ranges from 0 to 100 mm with 0 mm being no symptoms and 100 mm being the worst symptoms the participant has ever felt. |
First treatment visit and second treatment visit.
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Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Anne K Ellis, MD, Queen's University
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Infections
- Respiratory Tract Infections
- Respiratory Tract Diseases
- Immune System Diseases
- Hypersensitivity, Immediate
- Otorhinolaryngologic Diseases
- Respiratory Hypersensitivity
- Hypersensitivity
- Nose Diseases
- Rhinitis
- Rhinitis, Allergic
- Physiological Effects of Drugs
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Anti-Allergic Agents
- Histamine H1 Antagonists
- Histamine Antagonists
- Histamine Agents
- Histamine H1 Antagonists, Non-Sedating
- Cetirizine
Other Study ID Numbers
- EEU-BRC-001
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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