An Exploratory Study of PQ Grass 27600 SU
Public ClinicalTrials.gov record NCT04687059. 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 Randomised, Double-blind, Placebo-controlled Exploratory Study to Explore the Efficacy and Safety of PQ Grass 27600 SU in Subjects With Seasonal Allergic Rhinitis and/or Rhinoconjunctivitis Induced by Grass Pollen Exposure
Study identification
- NCT ID
- NCT04687059
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2, Phase 3
- Lead sponsor
- Allergy Therapeutics
- Industry
- Enrollment
- 119 participants
Conditions and interventions
Conditions
Interventions
- Active Placebo Drug
- PQ Grass Biological
- Standard Placebo Drug
Drug · Biological
Eligibility (public fields only)
- Age range
- 18 Years to 65 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Oct 18, 2020
- Primary completion
- Aug 17, 2021
- Completion
- Oct 27, 2021
- Last update posted
- Apr 28, 2026
2020 – 2021
United States locations
- U.S. sites
- 8
- U.S. states
- 7
- U.S. cities
- 8
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Allergy and Asthma Associates of Bluegrass | Lexington | Kentucky | 40509 | — |
| Chesapeake Clinical Research, Inc. | White Marsh | Maryland | 21236 | — |
| Atlantic Research Center, LLC | Ocean Township | New Jersey | 07712 | — |
| Smith Allergy & Asthma Specialists | Cortland | New York | 13045 | — |
| Corning Center for Clinical Research | Horseheads | New York | 14845 | — |
| Allergy Partners of Western North Carolina | Asheville | North Carolina | 28801 | — |
| Bernstein Clinical Research Center, LLC | Cincinnati | Ohio | 45231 | — |
| Allergy Asthma & Sinus Center, S.C. | Greenfield | Wisconsin | 53228 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 6 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04687059, 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 28, 2026 · Synced May 19, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04687059 live on ClinicalTrials.gov.