A Histamine Pharmacodynamic Biomarker to Guide Treatment in Pediatric Asthma (HAS3)
Public ClinicalTrials.gov record NCT04699604. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Histamine Pharmacodynamic Biomarker to Guide Treatment in Pediatric Asthma
Study identification
- NCT ID
- NCT04699604
- Recruitment status
- Recruiting
- Study type
- Interventional
- Phase
- Phase 3
- Lead sponsor
- Bridgette Jones
- Other
- Enrollment
- 300 participants
Conditions and interventions
Conditions
Interventions
- Levocetirizine Dihydrochloride Drug
- Placebo Drug
Drug
Eligibility (public fields only)
- Age range
- 6 Years to 17 Years
- Sex
- All
- Healthy volunteers
- Not listed
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Apr 27, 2021
- Primary completion
- Sep 29, 2026
- Completion
- Sep 29, 2026
- Last update posted
- Apr 7, 2026
2021 – 2026
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Children's Mercy Hospital | Kansas City | Missouri | 64108 | Recruiting |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04699604, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Apr 7, 2026 · Synced Apr 22, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04699604 live on ClinicalTrials.gov.