Effects of Low Dose Ozone on Airway Inflammatory Responses in Adults With Asthma - Sedentary Nasal Ozone (Asthma SNOZ)
Effects of Low Dose Ozone on Airway Inflammatory Responses in Adults With Asthma Asthma SNOZ
Sponsor: Environmental Protection Agency (EPA)
Suspended
Enrollment for this study was stopped due to Covid and will resume once it is determined acceptable to do inhalational challenges. rebuilding chambers after EPA was shut down.
Listed as NCT04109807, this NA trial focuses on Asthma, Allergic and remains suspended. Sponsored by Environmental Protection Agency (EPA), it has been updated 13 times since 2019, reflecting substantial change activity. This study adds to the evidence base for this therapeutic area through structured, versioned documentation.
Status Flow
Change History
13 versions recorded-
Jan 2026 — Present [monthly]
Suspended NA
-
Nov 2024 — Jan 2026 [monthly]
Suspended NA
-
Sep 2024 — Nov 2024 [monthly]
Suspended NA
-
Jul 2024 — Sep 2024 [monthly]
Suspended NA
-
Nov 2023 — Jul 2024 [monthly]
Suspended NA
▶ Show 8 earlier versions
-
Sep 2022 — Nov 2023 [monthly]
Suspended NA
-
Dec 2021 — Sep 2022 [monthly]
Suspended NA
-
Sep 2021 — Dec 2021 [monthly]
Suspended NA
Status: Active Not Recruiting → Suspended
-
Jan 2021 — Sep 2021 [monthly]
Active Not Recruiting NA
-
May 2020 — Jan 2021 [monthly]
Active Not Recruiting NA
Status: Recruiting → Active Not Recruiting
-
Feb 2020 — May 2020 [monthly]
Recruiting NA
Status: Not Yet Recruiting → Recruiting
-
Dec 2019 — Feb 2020 [monthly]
Not Yet Recruiting NA
-
Oct 2019 — Dec 2019 [monthly]
Not Yet Recruiting NA
First recorded
Eligibility Summary
No eligibility information available.
Contact Information
- Environmental Protection Agency (EPA)
- North Carolina State University
- University of North Carolina, Chapel Hill
For direct contact, visit the study record on ClinicalTrials.gov .